Answers
Answer:
C
Step-by-step explanation:
The slopes of perpendicular must multiply to -1, or in other words, be negative reciprocals.
Ex: 2/3 and -3/2 are perpendicular
Related Questions
9. How many ounces of a 25% alcohol solution must be mixed with 5 ounces of a 30% alcohol solution to make a 26% alcohol
solution?
ounces
The amount of 25% alcohol solution is
(Type an integer or a decimal.)
Answers
Answer:
27 Oz of 25% alcohol
Step-by-step explanation:
--percent ---------------- quantity
Alcohol I 30 ---------------- 18 Oz
alcohol II 25 ---------------- x Oz
Mixture 27 ---------------- 18 + x Oz
30*18+25x=27(18+x)
540+25x =486+27 x
25x-27x =486+540
-2x=-54
/ -2
x = 27
27 Oz of 25% alcohol
Solve C = 2mr for r could not make the correct sign for m
Answers
Answer:
C = 2mr =
r=
m=
Step-by-step explanation:
Not sure if it's correct.
What is the slope of the line described by the equation below y= 3x-6 A. (0,-6) B. (0,-3) C. (0,6) D. (0,3)
Answers
Answer:
A.)
Step-by-step explanation:
If you plug in the x and y values into the equation, you will see that -6=-6
y=3x-6
-6=3(0)-6
-6=-6
Therefore, A.) is the correct answer
Evaluate 3x for x = −2, x = 1, and x = 3. Question 18 options: A) 1∕3, 0, 9 B) 1∕9, 3, 27 C) 9, 3, 27 D) 1∕9, 9, 27
Answers
Answer: B) 1/9, 3, 27
Step-by-step explanation:
Here, we need to evaluate [tex]3^x[/tex] for [tex]x = -2, x = 1, \text{ and } x = 3.[/tex]
So, we substitute values of x in the given function.
At x= -2, we have
[tex]3^{-2}=\dfrac{1}{3^2}=\dfrac{1}{9}\ \ \ [\because\ a^{-n}=\dfrac{1}{a^n}][/tex]
At x= 1, we have
[tex]3^1=3[/tex]
At x= 3
[tex]3^3=3\times3\times3=27[/tex]
So, the values of [tex]3^x[/tex] for
Thus, the correct answer is B) 1/9, 3, 27
Answer:
Step-by-step explanation:
Answer: B) 1/9, 3, 27
4. Compare the function f(x) = –x^2 – 4x + 3 with the function g(x), graphed here. Which function has a greater absolute maximum?
Answers
Answer:
f(x) has the greater absolute maximum
Step-by-step explanation:
[tex]f(x)=-x^2-4x+3 \\\\f'(x)=-2x-4=-2(x+2)[/tex]
so f'(x)=0 for x = -2 and f(-2)=-4+8+3=11-4=7
so f(x) has the greater absolute maximum
hope this helps
. Determine whether the forces in the pair are pulling at right angles to each other. For each group of three forces below, determine whether the forces in each pair are pulling at right angles to each other. 13 lb, 35 lb, resultant force 30 lb no; 20 lb, 15 lb, resultant force 25 lb yes 13 lb, 35 lb, resultant force 30 lb yes; 20 lb, 15 lb, resultant force 25 lb yes 13 lb, 35 lb, resultant force 30 lb yes; 20 lb, 15 lb, resultant force 25 lb no 13 lb, 35 lb, resultant force 30 lb no; 20 lb, 15 lb, resultant force 25 lb no
Answers
Answer:
13lb
Step-by-step explanation:
{y = 308x
y = 122x + 2,338
Solve the linear equation
Answers
Answer:
Step-by-step explanation:
So if y=308x then we have to use the substitution method.
y=308x
y=122x+2338
so y=308x=122x+2338
308x-122x=186x
186x=2338
do the division and thats your answer. which is what y equals
which symbol is used to name a line with two points A and B
Answers
Answer:
AB
Step-by-step explanation:
I think that's the answer
A man purchased 10 pens. He sold 5 pens at 25% profit and the remaining 5
pens at [tex]16 \frac{2}{3} [/tex]% loss. If he received Rs 625 in total, find the cost price of each pen.
help!!!
Answers
Answer:
Rs 60
Step-by-step explanation:
[tex]5x \times (1+25\%)+5x \times (1-16\frac{2}{3}\%)=625[/tex]
[tex]5x(1+0.25)+5x(1-1/6)=625[/tex]
[tex]5x(1.25)+5x(5/6)=625[/tex]
[tex]10.416667x=625[/tex]
[tex]\frac{10.416667x}{10.416667}=\frac{625}{10.416667}[/tex]
[tex]x=59.99999...[/tex]
[tex]x=60[/tex]
GET THE RIGHT ANswer n ill make u brainliest
Answers
[tex]answer \\ \frac{2}{3} \\ please \: see \: the \: attached \: picture \: for \: full \: solution \\ hope \: it \: helps[/tex]
What is the value of z in the equation 2(4z − 5 − 3) = 166 − 46?
A.15
B. 17
C.30
D.32
Answers
Answer:
17Option B is the correct option.
Solution,
[tex]2(4z - 5 - 3) = 166 - 46 \\ or \: 8z - 10 - 6 = 120 \\ or \: 8z - 16 = 120 \\ or \: 8z = 120 + 16 \\ or \: 8z = 136 \\ or \: z = \frac{136}{8} \\ z = 17[/tex]
Hope this helps
Answer:
17 is the correct answer
Step-by-step explanation:
2(2×17-5-3)=166-46
2×60=120
120=120
Hence,
z=17
"Give your answers to 1 decimal place" help :(
Answers
Answer:
[tex]b[/tex] ≈ [tex]12.0[/tex]
Step-by-step explanation:
Using the Pythagorean theorem: [tex]a^2+b^2=c^2[/tex] where a and b are the legs and c is the hypotenuse.
[tex]12^2+b^2=17^2\\144+b^2=289\\[/tex]
Subtract 144 from both sides
[tex]b^2=145\\[/tex]
Square root both sides
[tex]b=\sqrt{145}[/tex]
[tex]b[/tex] ≈ [tex]12.0[/tex]
Answer:
Step-by-step explanation:
[tex]12^{2} + b^{2} = 17^{2} \\144 + b^{2} = 289\\b^{2} =289-144\\b^{2} =145\\b=\sqrt{145} \\b = 12.04\\b = 12[/tex]
Hope it helps tell me if its right
pls help i hive brainliest
Answers
Answer:
a)34.746
Step-by-step explanation:
Find x
There’s 2 problems! Thank you!
Answers
Answer:
Step-by-step explanation:
1. x/10=12/15
x*15=10*12
x=10*12/15
x=2*5*3*4/5*3=8
x=8
2. x/9=8/6
x*6=9*8
x=9*8/6
x=3*3*8/3*2=24/2
x=12
Generate a frequency table for the following data: 3, 12, 25, 2, 3, 6, 17, 17, 15, 13, 20, 22, 21, 18, 19.
Use the ranges listed in the table:
Range Number of Values
Relative Frequency
1-5
6 - 10
11 - 15
16 - 20
21 - 25
What is the relative frequency for the range 1 -57
a. 0.33
b. 0.4
c. 0.2
d. .27
Answers
Hope this helps
4. analyze the diagram below and complete the instructions that follow. plss
Answers
Answer:
Option D. DE/DF
Step-by-step explanation:
The following data were obtained from the question:
Opposite = DE
Hypothenus = DF
Adjacent = EF
Sin θ =.?
From trigonometrical operations,
Sin θ = Opposite/Hypothenus.
With the above information, we can find Sin θ as follow:
Sin θ = Opposite/Hypothenus.
Sin θ = DE/DF.
The sum of half a number and four is negative 7.
Choose the equation that represents the verbal sentence.
a. 2x+4=-7
B.x/2-4=-7
C.x/2+4=-7
D.x+2/2=-7
Answers
Answer:
The answer is option C
Let the number to found be x
half a number = x/2
'and' in the expression means addition
sum of half a number and four is negative 7 is
x/2 + 4 = - 7
Hope this helps
Z is a positive integer x is 5% more than z. Y is 5% less than x
Answers
Answer:
[tex]x>z\\z>y[/tex]
Step-by-step explanation:
[tex]x[/tex] is greater than [tex]z[/tex].
[tex]z[/tex] is greater than [tex]y[/tex].
PLEASE HELP ASAP!!
Determine the value of k that would make these two functions inverses.
Answers
Answer: K = 6
Step-by-step explanation:
If you find the inverse of the inverse function, it will return back to initial function.
The inverse of r^-1 (x) will give r(x).
To find the inverse of r^-1(x), let it be equal to y. Interchange y and x for each other and make y the subject of formula. That is,
Y = 2x^2 - 14
Interchange y for x
X = 2y^2 - 14
2y^2 = x + 14
Y^2 = x/2 + 14/2
Square both side
Y = sqrt ( x/2 + 7 )
It is only when K = 6, that will can get the value above.
The end points of AB are A(2,3) and B(8,1). The perpendicular bisector of AB is CD and point C lies on AB. The length of CD is √10 units. The coordinates of point C are?
Answers
Answer and Step-by-step explanation:
Answer:
The coordinates of C are (5 , 2)
The slope of CD is 3
The coordinates of D are (6 , 5) and (4 , -1)
Step-by-step explanation:
* Now lets study the problem
- The ends points of line AB are A = 2 , 3) and B = (8 , 1)
- CD is the perpendicular bisector of AB, and C lies on AB
- That means:
# C is the mid-point of AB
# The slope of AB × the slope of CD = -1 (one of them is a multiplicative
inverse and additive inverse of the other)
-Ex: the slope of one is a/b, then the slope of the other is -b/a
* The mid-point between two points (x1 , y1) and (x2 , y2) is:
[(x1 + x2)/2 , (y1 + y2)/2]
∵ C is the mid-point of AB
∴ C = [(2 + 8)/2 , (3 + 1)/2] = [10/2 , 4/2] = (5 , 2)
* The coordinates of C are (5 , 2)
- The slope of a line passing through points (x1 , y1) and (x2 , y2) is:
the slope = (y2 - y1)/(x2 - x1)
∴ The slope of AB = (1 - 3)/(8 -2) = -2/6 = -1/3
∵ CD ⊥ AB
∴ The slope of CD × the slope of AB = -1
∴ The slope of CD = 3
* The slope of CD is 3
- The length of a line passing through points (x1 , y1) and (x2 , y2) is:
the length = √[(x2 - x1)² + (y2 - y1)²]
∵ The length of CD = √10
∵ Point D is (x , y)
∴ (x - 5)² + (y - 2)² = (√10)²
∴ (x - 5)² + (y - 2)² = 10 ⇒ (1)
∵ The slope of CD is (y - 2)/(x - 5) = 3 ⇒ by using cross multiply
∴ (y - 2) = 3(x - 5) ⇒ (2)
- Substitute (2) in (1)
∴ (x - 5)² + [3(x - 5)]² = 10 ⇒ simplify
* [3(x - 5)]² = (3)²(x - 5)² = 9(x - 5)²
∴ (x - 5)² + 9(x - 5)² = 10 ⇒ add the like terms
∴ 10(x - 5)² = 10 ⇒ ÷ 10 both sides
∴ (x - 5)² = 1 ⇒ take √ for both sides
∴ x - 5 = ± 1
∴ x - 5 = 1 ⇒ add 5 to both sides
∴ x = 6
* OR
∴ x - 5 = -1 ⇒ add 5 to both sides
∴ x = 4
- Substitute the values of x in (2)
∴ y - 2 = 3(6 - 5)
∴ y - 2 = 3 ⇒ add 2
∴ y = 5
* OR
∴ y - 2 = 3(4 - 5)
∴ y - 2 = -3 ⇒ add 2
∴ y = -1
* The coordinates of D are (6 , 5) and (4 , -1)
Which two numbers does 128 lie between on a number line
Answers
Answer:
127 and 129 if its going up by ones
If the equation below is solved by graphing, which statement is true?
log(6x + 10) = log 1 x
92
Answers
Answer:
92
Step-by-step explanation:
Select the correct answer.
Which of the following sets of ordered pairs represents a function?
Answers
Answer: {(-8, -14), (-7,-12), (-6,-10), (-5,-8)}
Step-by-step explanation: A function is a relation in which each x-coordinate corresponds to exactly one y-coordinate.
In the relations show here, notice that the first set
of ordered pairs is the only set where each x-coordinate
appears once with a different y-coordinate.
In the other ordered pairs, there is an x-coordinate that appears more
than once and it corresponds to a different y-coordinate.
For example, in the second relation,
the x-coordinate -9 appears twice.
In one case, -9 corresponds to -12 and
in the other case, it corresponds to -8.
So, this is not a function.
WILL MARK BRAINLIEST A satellite is to be put into an elliptical orbit around a moon as shown below. A vertical ellipse is shown surrounding a spherical object labeled, moon. The moon is a sphere with radius of 567 km. Determine an equation for the ellipse if the distance of the satellite from the surface of the moon varies from 900 km to 169 km. x squared divided by 900 plus y squared divided by 169 = 1 x squared divided by 1467 squared plus y squared divided by 736 squared = 1 x squared divided by 736 squared plus y squared divided by 1467 = 1 x squared divided by 169 plus y squared divided by 900 = 1
Answers
Answer:
a=567 km+900 km
a=1,467 km
b=567 km+169 km
b=736 km
x^2/a^2+y^2/b^2=1
x^2/(1,467)^2+y^2/(736)^2=1
Step-by-step explanation:
Answer:
x^2 / 736^2 + y^2 / 1467^2 = 1
Urgent please see image
Answers
Answer:
A
Step-by-step explanation:
Because the mouse goes through 8 segments, this becomes a series of 8
Solve x/2 + y/3 = 1 for x
Answers
Answer:
[tex]x[/tex] = - [tex]\frac{2y}{3}[/tex] + 2
Step-by-step explanation:
Solve for [tex]x[/tex] by simplifying both sides of the equation , isolating the variable.
Hope this helped you, Also please let me know if anything is unclear or wrong!
Answer:
Step-by-step explanation:
Explain the main parts and uses of two kinds of proofs. March the word with the right definition.
A. Definition
B. Postulate(axiom)
C. Common notion
D. Theorem
E. Corollary
1. A statement that is assumed to be true without proof
2. A statement that has already been proven to be true
3. A statement that tells exactly what something is or means
4. A statement that makes sense based on another statement that has already been proven
5. A statement that is not officially defined but that is understood to be common sense.
Help pls :3
Answers
Answer:
A. - 3.
B. - 1.
C. - 5.
D. - 4.
E. - 2.
Step-by-step explanation:
A. Definition refers to a statement that exactly defines the object, thing or everything.
B. Postulate or axiom is a statement that is accepted as true in order to initiate an argument.
C. Common notion is the statement that helps to understand the common sense about the subject.
D. Theorem is a statement that shows proof on the basis of previously making statements.
E. Corollary is a statement that act as a small proof that has already been proven.
Hence, the correct matches are:
A. - 3.
B. - 1.
C. - 5.
D. - 4.
E. - 2.
Dog Food Prices
Bag Size (lb) Price ($)
30
49.00
22
32.36
8
10.23
What is the cost per pound of the 22 pound bag? Answers are rounded to the nearest hundredth.
1.47
1.67
1.77
1.87
Answers
Answer:
1.80
Step-by-step explanation:
Answer:
$1.47 per pound
Step-by-step explanation:
The 22 pound bag of dog food costs $32.36. We want to find the cost per pound, or the unit rate for the 22 pound bag.
Therefore, we must divide the cost by the number of pounds.
cost/pounds
cost= $32.36
pounds= 22 lbs
$32.36/22 lbs
Divide 32.36 by 22
$1.4709090....
Round to the nearest cent, or hundredth. The 0 in the thousandths place indicates we should leave the 7 in the hundredth place.
$1.47
The 22 pound bag of dog good costs $1.47 per pound.
I’m in need of major help with my Intermediate Algebra. Anyone please I need to pass my summer class.
Answers
Answer:
oki
Step-by-step explanation:
what do you need help with? :)
The sweater Ingrid wants to buy is $30.
It is on sale for 33% off. If the sales tax is
7%, what is the total cost of the sweater?
Round to the nearest cent, if necessary.
Answers
Answer:
Sweater will be $21.51
Step-by-step explanation:
cost of sweater $30.00
Sale of 33% off comes to $9.90/off ($30 × 33% = $9.90)
$30.00 - $9.90 =$20.10
Sale cost of sweater is $20.10
$20.10 × 7% sales tax = $1.41
$20.10 + $1.41 = $21.51