can you maybe answer these questions ?
Answer:
27. 4x + 44 (D)
28. 17.5 in (A)
29. 189 cm² (C)
Step-by-step explanation:
27. 4 (2x + 11 - x) → 4 (x + 11) → 4x + 44
28. 369.25 ÷ 42.2 = 8.75 → 8.75 × 2 = 17.5 in
29. 21 × 9 = 189 cm²
Hope this helps! :)
Answer:
27.D
28.A
29.C
Step-by-step explanation:
27. 8x+44-4x= 4x+44 D
28. (369.25*2)/42.2=17.5 A
29. 9*21=189 cm^2 C
I need help asap for this question
Answer:
B. 12 and 16Step-by-step explanation:
Well since AB/DE = 3/4 and AB/DE = BC/EF, then BC/EF must also be 3/4.
We now only need to find a fraction that simplifies to 3/4.
8/12 = 2/3 [tex]\neq[/tex] 3/4
12/16 = 3/4 ✅
4/6 = 2/3 [tex]\neq[/tex] 3/4
6/9 = 2/3 [tex]\neq[/tex] 3/4
This means that the correct answer is B. 12 and 16.
I'm always happy to help :)Answer:
B. 12 and 16
Step-by-step explanation:
Find the missing side length in the image attached.
Answer:
? = 56.
Step-by-step explanation:
In the problem, the side 20 corresponds to side 32 and side 20 + 35 corresponds to side 32 + ?.
[tex]\frac{20}{32} =\frac{20 + 35}{? + 32}[/tex]
[tex]\frac{5}{8} =\frac{55}{? + 32}[/tex]
[tex]\frac{1}{8}=\frac{11}{? + 32}[/tex]
? + 32 = 8 * 11
? + 32 = 88
? = 56.
Hope this helps!
Answer:
56
Step-by-step explanation:
We can find the missing side length through ratios.
20/35 = 32/x
Cross multiply.
20x = 35(32)
20x = 1120
x = 1120/20
x = 56
Find the y-intercept of the line. Y=16/13x - 19/6
Answer:
y intercept is -19/6
Step-by-step explanation:
The slope intercept form of a line is given by
y = mx+b where m is the slope and b is the y intercept
y = 16/13x - 19/6
The slope is 16/13 and the y intercept is -19/6
Answer:
[tex]\boxed{-\frac{19}{6} }[/tex]
Step-by-step explanation:
Use slope-intercept formula.
[tex]y=mx+b[/tex]
[tex]m[/tex] is the slope of the line.
[tex]b[/tex] is the y-intercept of the line.
The equation of the line is already in slope-intercept form.
[tex]y=\frac{16}{3} x+-\frac{19}{6}[/tex]
[tex]b= -\frac{19}{6}[/tex]
Factorise fully 72-2y^2
Answer: 2(y + 6)(-y + 6)
Step-by-step explanation: Factor 72 - 2y^2
-2y^2 + 72
= 2(y + 6)(-y + 6)
Answer:
[tex]-2\left(y+6\right)\left(y-6\right)[/tex]
Step-by-step explanation:
[tex]72-2y^2[/tex]
[tex]-2y^2+72[/tex]
Factor out GCF.
[tex]2(-y^2+36)[/tex]
Apply difference of two squares formula.
[tex]-2\left(y+6\right)\left(y-6\right)[/tex]
simplify the expression (-a+2b) - (3a+b)
Answer:
-4a + b
Step-by-step explanation:
Take away the parentheses (brackets) and solve.
-a + 2b - 3a - b
-a - 3a + 2b - b
-4a + b
Answer:
It's -[tex]4a + b[/tex]
Step-by-step explanation:
Simplify the expression.
A function describes a proportional relationship for a set of discrete data. What is true about the graph of that function?
It is a series of points that fall in a straight line but are unconnected.
It is a series of points that cannot be connected by a straight line.
It is a line connecting a series of points.
It is a line drawn only in the first quadrant.
Answer:
A. It is a series of points that fall in a straight line but are unconnected.
Step-by-step explanation:
Given variables y and x, and a proportional factor k, the proportional relationship is :
y/x = k or y = k*x
This means that points fall in a straight line.
Discrete data means that the function is also discrete, that is, points are not connected between them like in a continuous function.
Answer:
its a
Step-by-step explanation:
got it right
The school band had a candy bar fundraiser. They paid $1.25 for each candy bar and sold them for $2 each. How many candy bars will they have to sell to make $300?
Answer:
225
Step-by-step explanation:
5)Sam is traveling. His
baggage weighs a total of 35
pounds. He has one bag that
weighs 5 pounds and two
identical bags. How much do
the two identical bags weigh?
hurry pls
Answer:
15
Step-by-step explanation:
you need to get to 35. if one bag is 5 pounds what else plus 5 is 35. so each bag is 15 pounds
Answer: 15
Step-by-step explanation:
35 - 5 = 30
30 ÷ 2 = 15
Hope this helped.
(15 each)
Which of the following are reasons used in the proof that the angle-bisector construction can be used to bisect any angle?
Check all that apply
A. Any Line segment can be extended indefinitely
B. All of the radii of a circle are congruent
C .CPCTC
D. SSS triangle congruence postulate
Answer: B C D
Step-by-step explanation:
just answered it for AP3X
Reasons used in the proof that the angle-bisector construction can be used to bisect any angle are as follows:
B. All of the radii of a circle are congruent
C .CPCTC
D. SSS triangle congruence postulate
What is angle bisector ?" Angle bisector is defined as the ray which divides the angle into two equal parts."
According to the question,
A. Any Line segment can be extended indefinitely is not required to bisect any angle .
Therefore , it is not a correct option.
B. All of the radii of a circle are congruent : To bisect an angle draw an arc with same radii is used in constructing an angle bisector .
Therefore , Option B is a correct option.
C. CPCTC : Corresponding parts of a congruent triangle are congruent is required to proof angle bisector. As it proofs two triangles are congruent.
Therefore, Option C is the correct option.
D. SSS triangle congruence postulate : It is required an important step to prove that two triangles are congruent which imply proof of angle - bisector construction.
Therefore, Option D is the correct option.
Hence, Option B, Option C , Option D are the correct answer.
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An apartment building contains 100 units.The one-bedroom units rent for $495 per month and the two bedroom units rent for $600 per month.When all are rented out,the total monthly rent paid by the tenants is $55,275.How many two-bedroom apartments are there
A.45
B.55
C.50
D.66
There are 55 two-bedroom units in the apartment.
Let x represent the number of one bedroom units and y represent the number of two bedroom units.
Since the apartment building contains 100 units, hence:
x + y = 100 (1)
The total monthly rent paid by the tenants is $55,275, hence:
495x + 600y = 55275 (2)
Solving equation 1 and 2 simultaneously gives:
x = 45, y = 55
Hence, there are 55 two-bedroom units in the apartment.
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9/5= 27/ y - 7 Thats the question. Im dyin for help. :)
Answer:
1 10/17
I answered it in the pervious question
A math class consists of 25 students, 14 female and 11 male. Three students are selected at random to participate in a probability experiment. Compute the probability that a. a male is selected, then two females. b. a female is selected, then two males. c. two females are selected, then one male. d. three males are selected. e. three females are selected.
Answer:
(a) The probability that a male is selected, then two females is 0.4352.
(b) The probability that a female is selected, then two males is 0.3348.
(c) The probability that two females are selected, then one male is 0.4352.
(d) The probability that three males are selected is 0.0717.
(e) The probability that three females are selected is 0.1583.
Step-by-step explanation:
We are given that a math class consists of 25 students, 14 female and 11 male. Three students are selected at random to participate in a probability experiment.
(a) The probability that a male is selected, then two females is given by;
Number of ways of selecting a male from a total of 11 male = [tex]^{11}C_1[/tex]
Number of ways of selecting two female from a total of 14 female = [tex]^{14}C_2[/tex]
Total number of ways of selecting 3 students from a total of 25 = [tex]^{25}C_3[/tex]
So, the required probability = [tex]\frac{^{11}C_1 \times ^{14}C_2}{^{25}C_3}[/tex]
= [tex]\frac{\frac{11!}{1! \times 10!} \times \frac{14!}{2! \times 12!} }{\frac{25!}{3! \times 22!} }[/tex] {[tex]\because ^{n}C_r = \frac{n!}{r! \times (n-r)!}[/tex] }
= [tex]\frac{1001}{2300}[/tex] = 0.4352
(b) The probability that a female is selected, then two males is given by;
Number of ways of selecting a female from a total of 14 female = [tex]^{14}C_1[/tex]
Number of ways of selecting two males from a total of 11 male = [tex]^{11}C_2[/tex]
Total number of ways of selecting 3 students from a total of 25 = [tex]^{25}C_3[/tex]
So, the required probability = [tex]\frac{^{14}C_1 \times ^{11}C_2}{^{25}C_3}[/tex]
= [tex]\frac{\frac{14!}{1! \times 13!} \times \frac{11!}{2! \times 9!} }{\frac{25!}{3! \times 22!} }[/tex] {[tex]\because ^{n}C_r = \frac{n!}{r! \times (n-r)!}[/tex] }
= [tex]\frac{770}{2300}[/tex] = 0.3348
(c) The probability that two females is selected, then one male is given by;
Number of ways of selecting two females from a total of 14 female = [tex]^{14}C_2[/tex]
Number of ways of selecting one male from a total of 11 male = [tex]^{11}C_1[/tex]
Total number of ways of selecting 3 students from a total of 25 = [tex]^{25}C_3[/tex]
So, the required probability = [tex]\frac{^{14}C_2 \times ^{11}C_1}{^{25}C_3}[/tex]
= [tex]\frac{\frac{14!}{2! \times 12!} \times \frac{11!}{1! \times 10!} }{\frac{25!}{3! \times 22!} }[/tex] {[tex]\because ^{n}C_r = \frac{n!}{r! \times (n-r)!}[/tex] }
= [tex]\frac{1001}{2300}[/tex] = 0.4352
(d) The probability that three males are selected is given by;
Number of ways of selecting three males from a total of 11 male = [tex]^{11}C_3[/tex]
Total number of ways of selecting 3 students from a total of 25 = [tex]^{25}C_3[/tex]
So, the required probability = [tex]\frac{^{11}C_3}{^{25}C_3}[/tex]
= [tex]\frac{ \frac{11!}{3! \times 8!} }{\frac{25!}{3! \times 22!} }[/tex] {[tex]\because ^{n}C_r = \frac{n!}{r! \times (n-r)!}[/tex] }
= [tex]\frac{165}{2300}[/tex] = 0.0717
(e) The probability that three females are selected is given by;
Number of ways of selecting three females from a total of 14 female = [tex]^{14}C_3[/tex]
Total number of ways of selecting 3 students from a total of 25 = [tex]^{25}C_3[/tex]
So, the required probability = [tex]\frac{^{14}C_3}{^{25}C_3}[/tex]
= [tex]\frac{ \frac{14!}{3! \times 11!} }{\frac{25!}{3! \times 22!} }[/tex] {[tex]\because ^{n}C_r = \frac{n!}{r! \times (n-r)!}[/tex] }
= [tex]\frac{364}{2300}[/tex] = 0.1583
(a) The probability that a male is selected, then two females is 0.4352.
(b) The probability that a female is selected, then two males is 0.3348.
(c) The probability that two females are selected, then one male is 0.4352.
(d) The probability that three males are selected is 0.0717.
(e) The probability that three females are selected is 0.1583.
This diagram was constructed according to a certain logic. Can you work out which number should replace the question mark?
Answer:
4
Step-by-step explanation:
I'm guessing that each number represents the number of rectangles that overlap. Where you see 1, there is only one rectangle, 2 shows where two rectangles overlap, and so on.
At the question mark, it appears as though four rectangles overlap. So a 4 would go there.
A boat travels 40 miles downstream (with the current) in the same time it takes the boat to travel 30 miles upstream (against the current). If the boat travels at 46 miles per hour, write an equation to solve for the speed of the current, x in miles per hour.
Answer:
40/46+x=30/46-x
Step-by-step explanation:
Speed=distance/time
s=d/t
x=speed of the boat
Downstream speed=x+46
Upstream speed=x-46
Downstream
s=d/t
x+46=40/t
t=40/(x+46)
Upstream
s=d/t
x-46=30/t
t=30/(x-46)
Equate upstream and downstream
30/x-46=40/x+46
30(x+46)=40(x-46)
30x+1380=40x-1840
30x+1380-40x+1840=0
-10x+3220=0
-10x=-3220
Divide both sides by -10
x=322
x=322 miles/hour
Which of the points are solutions to the inequality?
Check all that apply.
O (-2,-5)
0 (0.-4)
(1.1)
(3.5)
D (5.5
Answer:
A, C and D
Step-by-step explanation:
The missing inequality is:
y > 2x -4
To verify if a point is a solution, replace x into the equation, compute y, and see their relationship.
Option A: (-2,-5)
2(-2) -4 = -8
y = -5 > -8
then, the point is solution
Option B: (0,-4)
2(0) -4 = -4
y = -4 = -4
then, the point is not solution
Option C: (1,1)
2(1) -4 = -2
y = 1 > -2
then, the point is solution
Option D: (3,5)
2(3) -4 = 2
y = 5 > 2
then, the point is solution
Option E: (5,5)
2(5) -4 = 6
y = 5 < 6
then, the point is not solution
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each expression to the scenario it represents.
The correct expression with the correct statement has matched below.
What is the percentage?The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.
The percentage is equivalent to the quantity of that value between 1 and 100, and it is highly helpful for forecasting. For instance, if you say 678, we must also know the whole number, but if you say 80%, it is obvious.
The price of a game that’s been discounted by 18% of its list price
It will be (x - 0.18x) = 0.82x
The price of a toy that sells for 18% more than the amount needed to build the toy
It will be (x + 0.18x) = 1.18x
The volume of water remaining in a tank after 3/10 of its original volume is drained out.
It will be [ x - (3/10)x ] = 7/10x
The total amount of flour in a bakery after receiving new stock equal to 3/10 of the current stock.
It will be [ x + (3/10)x ] = 13/10x
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How many solutions a system of linear equations have if: Questions. 1.the equations have different slopes? 2.the equations have the same slope and different y-intercepts. 3.the equations have the same slope and same y-intercepts. Answers. A.no solutions. B.infinetly as many solutions C.two solutions. D.one solution
Answer:
see below
Step-by-step explanation:
1.the equations have different slopes? They will intersect at one point so one solution
2.the equations have the same slope and different y-intercepts. They are parallel lines with a different y intercept so they will never intersect - no solutions
3.the equations have the same slope and same y-intercepts. they are the same line so they have infinite solutions
Answer:
1. One solution
2. no solution
3. infinite number of solutions.
Step-by-step explanation:
How many solutions a system of linear equations have if: Questions.
(assuming a system of two equations)
1.the equations have different slopes?
One unique solution, which is at the intersection point.
2.the equations have the same slope and different y-intercepts.
The equations/lines are then parallel but NOT coincident. They will never meet, therefore NO solution.
3.the equations have the same slope and same y-intercepts.
The two lines/equations are in effect coincident. Therefore there is an infinite number of solutions.
Answers. A.no solutions. B.infinetly as many solutions C.two solutions. D.one solution
Determine both the x and y intercepts. Please help! Will mark brainliest!
Answer:
y-intercept: (0, 2.5)
x-intercept: (1.67, 0)
Step-by-step explanation:
Right now, you have 3x + 2y = 5. You want to change it into slope-intercept form to make the problem easier to solve.
2y = -3x + 5
y = -3/2x + 5/2
From here, you can see that the y-intercept is (0, 5/2). You can also say that the y-intercept is (0, 2.5).
To get the x-intercept, substitute 0 for y.
0 = -3/2x + 5/2
3/2x = 5/2
3x = 5
x = 5/3
So, the x-intercept is (5/3, 0). You can also say that the x-intercept is (1.67, 0).
Hope this helps!
Answer:
Step-by-step explanation:
To find the x-intercept, let y = 0. Then 3x = 5 and x = 5/3, or x = 1.667, and the x-intercept is (1.667, 0).
To find the y-intercept, let x = 0. Then 2y = 5 and y = 5/2 or 2.5. Then the y-intercept is (0, 2.5).
8
Express it in slope-intercept form.
6
Enter the correct answer.
OOO
DONE
Clear all
2
6 8
Answer:
I'm confused what's the question ?
If you're good at trigonometry please help me with question nine a and b and show full working out tyyyyyyyy ;)
Problem 9, part a)
Compass bearings always have north as the starting point. This is where 0 degrees is situated, and 360 degrees as well. As the bearing angle increases, you'll turn to the right toward the eastward direction. Effectively you're sweeping out a clockwise rotation. The bearing 322 degrees is in a northwest position as the diagram shows (place the ship at the bottom right corner of the triangle). The bottom right acute angle of the triangle is 322 - 270 = 52 degrees. This is the reference angle we'll use for finding the distance d.
With respect to the reference angle of 52 degrees, the side 18.5 is the opposite side and d is the adjacent side. Use the tangent ratio to get...
tan(angle) = opposite/adjacent
tan(52) = 18.5/d
d*tan(52) = 18.5
d = 18.5/tan(52)
d = 14.4537840903742
The approximate value of d is 14.4537840903742 km
This rounds to 14.5 when rounding to one decimal place.
Answer: 14.5 km=======================================================
Problem 9, part b)
Recall that
distance = rate*time
where "rate" is another term for "speed" or "velocity"
We can solve this for the time to get
time = distance/rate
------
We found the distance back in part a) above. We are given the rate of 48 km/h
So,
time = distance/rate
time = 14.4537840903742/48
time = 0.3011205018828
This is the time it takes in hours. Multiply by 60 to convert to minutes
0.3011205018828 hours = 60*0.3011205018828 = 18.067230112968 minutes
This rounds to the whole number 18
Answer: 18 minutesWhat is f[g(4)] for the following functions? f(x) = 2x2− 5 g(x) = 3x − 7
Answer:
45
Step-by-step explanation:
g(4) = 3 * 4 - 7 = 5
f[g(4)] = f(5) = 2 * 5² - 5 = 45
Answer:
45
Step-by-step explanation:
Suppose that x and y vary inversely, and x = 12 when y = 8. Write the function that
models the inverse variation.
Oy = 96
Oy = 20
y = 0.67x
y =4/x
The function that models the inverse variation is y=96/x. Thus, the correct option is A.
What is the directly proportional and inversely proportional relationship?Let there are two variables p and q
Then, p and q are said to be directly proportional to each other if
p = kq
where k is some constant number called the constant of proportionality.
This directly proportional relationship between p and q is written as
p∝q where that middle sign is the sign of proportionality.
In a directly proportional relationship, increasing one variable will increase another.
Now let m and n be two variables.
Then m and n are said to be inversely proportional to each other if
[tex]m = \dfrac{c}{n} \\\\ \text{or} \\\\ n = \dfrac{c}{m}[/tex]
(both are equal)
where c is a constant number called the constant of proportionality.
This inversely proportional relationship is denoted by
[tex]m \propto \dfrac{1}{n} \\\\ \text{or} \\\\n \propto \dfrac{1}{m}[/tex]
As visible, increasing one variable will decrease the other variable if both are inversely proportional.
Given that x and y vary inversely. Therefore, the relation can be written as,
y ∝ 1/x
y = k × 1/x
y = k/x
Also, when y =8, the value of x is 12, therefore, if we substitute the points in the above-formed equation,
y = k/x
8 = k /12
k = 96
Hence, the function that models the inverse variation is y=96/x. Thus, the correct option is A.
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A weather station on the top of a mountain reports that the temperature is currently 0℃ and has been falling at a constant rate of 3.5℃ per hour. What will the temperature at the top of the mountain be in 5 hours?
Answer:
-17.5℃
Step-by-step explanation:
Current temperature = 0 ℃
Rate of falling per hour = -3.5 ℃
Temperature in 5 hours = -3.5 * 5 = -17.5 ℃
are the two figures congruent
no, they are neither the same size or shape
yes, they are same size and shape
no, they are different directions
yes, they both quadrilateral
solve the equation 5-8x=-1
Answer:
[tex]x = \frac{3}{4} [/tex]Step-by-step explanation:
[tex]5 - 8x = - 1[/tex]
Move constant to R.H.S and change its sign:
[tex] - 8x = - 1 - 5[/tex]
Calculate
[tex] - 8x = - 6[/tex]
The difference sign (-) will be cancelled in both sides
[tex]8x = 6[/tex]
Divide both sides of the equation by 8
[tex] \frac{8x}{8} = \frac{6}{8} [/tex]
Calculate
[tex]x = \frac{3}{4} [/tex]
Hope this helps...
Good luck on your assignment...
Answer:
Hey there!
5-8x=-1
-8x=-6
x=3/4
Hope this helps!
PLSSSS HELP! Find all real zeros and complex of each solution x^3-5x^2+7x-35=0. SHOW WORK!!!
Hey there! :)
Answer:
x = 5, x = -i√7, x = i√7
Step-by-step explanation:
We can factor the equation x³ - 5x² + 7x - 35 = 0 by grouping:
x²(x - 5) + 7(x -5) = 0
We get:
(x² + 7)(x - 5) = 0
or
(x + i√7)(x - i√7)(x - 5) = 0
Use the Zero Product Property to solve for the solutions:
x - 5 = 0
x = 5.
-----------
x² + 7 = 0
x² = -7 (We will have imaginary solutions in this instance)
x = ±i√7
Therefore, the zeros of this equation are:
x = 5, x = -i√7, x = i√7
Which set of shapes contains members that are always similar to one another?
A.
trapezoids
B.
isosceles triangles
C.
equilateral triangles
D.
rectangles
E.
pentagons
Answer:
Your correct answer is option C. Equilateral triangles
Step-by-step explanation:
In similar polygons, it is all the corresponding angles that are congruent.
Three tins, A, B and C, each contain buttons.
Tin A contains x buttons.
Tin B contains 4 times the number of buttons that tin A contains.
Tin C contains 7 fewer buttons than tin A.
The total number of buttons in the three tins is 137
Work out the number of buttons in tin C.
The number of buttons in C is 17 buttons
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the three tins be A , B and C respectively
The number of buttons in tin A = x
The number of buttons in tin B = 4 times the number of buttons in tin A
= 4x
The number of buttons in tin C = 7 fewer buttons than tin A
= x - 7
The total number of buttons in tin A , tin B and tin C together = 137 buttons
So , the total number of buttons =
number of buttons in tin A + number of buttons in tin B + number of buttons in tin C
So , the equation will be
Total number of buttons = x + 4x + ( x - 7 )
x + 4x + ( x - 7 ) = 137
6x - 7 = 137
Adding 7 on both sides , we get
6x = 144
Divide by 6 on both sides , we get
x = 24 buttons
So , the number of buttons in tin A is 24 buttons
So , number of buttons in tin B = 4 x 24
= 96 buttons
Therefore , the number of buttons in tin C = 17 buttons
Hence , the number of buttons in tin C is 17 buttons
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D is m<5+m<6
Please answer im not very good with this math
Answer:
A. m∠2 + m∠3
Step-by-step explanation:
The exterior angle theorem states that the exterior angle formed when you extend the side of a triangle is equal to the sum of its non-adjacent angles.
So m∠4's non-adjacent angles are 2 and 3 NOT 1. Therefore, the measure of ∠4 = m∠2 + m∠3.
Hope this helps!
Answer:
A) m∠2 + m∠3
Step-by-step explanation:
Triangle Exterior Angle Theorem: The Sum of the outside angle is found using by adding the two opposite interior angles.
In the case of ∠4, the opposite interior angles are ∠2 & ∠3.
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