Answer:
(4.4, 5.4), (3.2, 8.3), (-7, 15), (23 4/15, 2 7/15)Step-by-step explanation:
1.
Multiply the first equation by 3/2:
3/2×8x + 3/2×2y = 3/2×46 12x + 3y = 69Subtract the second equation:
12x - 7x = 69 - 475x = 22x = 4.4Find y:
4*4.4 + y = 23y = 23 - 17.6y = 5.42.
Double the second equation and subtract the first one:
14x - 4x = 94 - 6210x = 32x = 3.2Find y:
4*3.2 + 6y = 626y = 62 - 12.86y = 49.8y = 8.33.
Subtract the second equation from the first one:
4x - 2x = 62 - 762x = -14x = -7Find y:
4(-7) + 6y = 626y = 62 + 286y = 90y = 154.
Multiply the second equation by 4 and subtract the first one:
16y - y = 4(98) - 4315y = 349y = 349/15y = 23 4/15Find x:
8x + 23 4/15 = 438x = 19 11/15x = 2 7/15Answer:
1. [tex]x\x=\frac{22}{5}=4.5, y=\frac{27}{5}=5.5[/tex]
2. [tex]x=\frac{16}{5}=3.2,y=\frac{41}{5}=8.3[/tex]
3. x=−7,y=15.
4. [tex]x=\frac{37}{15}=2\frac{7}{15},y=\frac{349}{15}=23\frac{4}{15}[/tex]
Step-by-step explanation:
I hope this helps.
Determine the slope intercept form of the linear equation from its graph.
Given:
The graph of linear function.
To find:
The slope intercept form of the linear equation from the given graph.
Solution:
The slope intercept form of a linear function is:
[tex]y=mx+b[/tex]
From the given graph it is clear that the graph passes through the points (1,300) and (4,800).
The equation of line is
[tex]y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]
[tex]y-300=\dfrac{800-300}{4-1}(x-1)[/tex]
[tex]y-300=\dfrac{500}{3}(x-1)[/tex]
[tex]y-300=\dfrac{500}{3}x-\dfrac{500}{3}[/tex]
Adding 300 on both sides, we get
[tex]y=\dfrac{500}{3}x-\dfrac{500}{3}+300[/tex]
[tex]y=\dfrac{500}{3}x+\dfrac{900-500}{3}[/tex]
[tex]y=\dfrac{500}{3}x+\dfrac{400}{3}[/tex]
Therefore, the required equation is [tex]y=\dfrac{500}{3}x+\dfrac{400}{3}[/tex].
Vertical angles are congruent.
Find the measure of angle x.
X
38°
X =
[?]
Enter
Answer:
Angle x is 38.
Step-by-step explanation:
If its congruent it means it is equal. Vertical angles are equal to each other.
The measure of x is 38°.
What are corresponding angles?The angles that are in the same position on two parallel lines intersected by a transversal line on the parallel lines.
Corresponding angles are equal.
We have,
Vertical angles are congruent.
x° and 38° are vertical angles.
Now,
x° = 38°
Thus,
The value of x is 38°.
Learn more about corresponding angles here:
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The area (in square inches) of a rectangle is given by the polynomial function A(x) = x^2+ 10x + 24. If the width of the rectangle is (x + 6) inches, what is the length
Answer:21
Step-by-step explanation:
If you spend 7.5 hours a week studying for English and 6.5 studying for math what is the ratio of time spent in math to studying for English
Answer:
6.5:7.5, or 1.3:1.5
Step-by-step explanation:
Simply find the number of hours studied for math (6.5) and hours studied for English (7.5) and put it into ratio form (6.5:7.5). Then simplify to get 1.3:1.5. Watch out for the wording.
Answer:
1.3 : 1.5
Step-by-step explanation:
Math : English
6.5 : 7.5 = 1.3 : 1.5
Find the ratio created when AB is partitioned by C.
Write your ratio with a, : and do not include spaces.
Answer:
Step-by-step explanation:
From the picture attached,
Segment AB has been divided into four equal parts.
Let each part measures equal length = 1 unit
Point C is 2 units apart from both the points A and B.
Length of AC = Length of BC = 2 units
Therefore, point C will be the mid point of segment AB.
And ratio of AC and BC = 1:1
AC:BC = 1:1
Similarly, AC:AB = 2:4
= 1:2
And BC:AB = 2:4
= 1:2
Practice
You bought shoes for $39 that were marked 20%
off. You have to pay
9% tax. What is the total for
the shoes?
Answer: $34
Step-by-step explanation:
39 x 0.2 = 7.80, the discount
39 - 7.80 = 31.20
31.20 x 0.09 = 2.80, the tax
31.20 + 2.80 = 34
Total cost for the shoes: $34
Answer:
24.99 dollars
Step-by-step explanation:
24 is 20 percent of 39
Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p.
n = 80, p = 0.2
Answer:
mean =16
variance=12.8
standard deviation =3.578
Step-by-step explanation:
mean=np=80×0.2=16
variance= np(1-p)
=16(1-0.2)
=12.8
standard deviation =
[tex] \sqrt{12.8} [/tex]
=3.5777
=3.578
4x (2x+1) simplify the equation
answer:
4x × 3x
explanation:
Answer:
8[tex]x^{2}[/tex]+4x
Step-by-step explanation:
Distribute 4x by 2x and by 1
Answer will be 8[tex]x^{2}[/tex]+4x
There are six cups which each hold 340ml. What is the total ml
Answer:
2040ml
Step-by-step explanation:
Answer:
2,040
Step-by-step explanation:
1 cop =340
multiply 340 six times
the answer will be 2,040
I have no idea what to do help me solve this please and please provide an explanation.
Question: what is the value of x?
Answer:
x = 48 (in degrees, I assume)
Step-by-step explanation:
Note that the two horizontal lines have those extra arrowheads on them? The red ones? That notation means those lines are parallel to each other.
In geometry, we learn that when two parallel lines are crossed by a third line (called a 'transversal'), alternate interior angles are congruent.
The two angles with labeled quantities are alternate exterior angles. They are 'alternate' because they are on opposite sides of the transversal line, and 'exterior' because they are above and below the the two horizontal lines, not contained in the interior area between them.
Therefore, 2x + 2 = x + 50
-x - 2 = -x - 2
x = 48
Hey guys can you please help me with this math problem?
Answer:
77777777
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
its a because it has a greater base value
Peter is writing about characters in wonder by r j palacio but somehow jack Will got that I had smiled at him
Answer:
.
Step-by-step explanation:
Answer:
Peter is writing about characters in Wonder by R. J. Palacio.But somehow Jack Will got that I had smiled at him. And he smiled back. Homework: A Necessary Evil Some people say homework is the most important teaching tool.
At the beginning of the Occupation, the Nazis basically let the Jews go about their business. This all changes in October 1940. Measures are introduced one after the other. Civil servants must sign an official declaration stating whether they are Jewish or not. Just like in Germany earlier on, Jewish civil servants and teachers are fired from their jobs. At the beginning of 1941, all Jews in the Netherlands must register.
Step-by-step explanation:
to make one dozen muffins 3/4 cup of blueberries will be needed how many cups of blueberries ared needed to make 48 muffins
57/20 or 2.85 is the right answer
Please help I’m completely stuck
Answer: 8x
Question 2:Answer: 12x - 3y
hope it helps.
WILL MARK BRAINLYEST AND 50 POINTS
Give a detailed explanation as to why you chose the answer you chose
What is the value of C in the equation 12c - 53 = 91?
(-2, -4)
(1, -1)
(2, -2)
(4, -4)
Answer: 12
Step-by-step explanation:
C=12 because u do 91+53 =144 then 144/12=12
C=12
I need to find the volume
Answer:
[tex]941 in^{3}[/tex]
Step-by-step explanation:
You walk 1/4 miles to a shoe store. Then you walk another 2/5 miles to a music store. How many miles ha r you walked in all?
Answer and Step-by-step explanation:
[tex]\frac{13}{20}[/tex], or 0.65 miles.
Convert both to common denominator, then add together.
They have a common denominator of 20.
[tex]\frac{1}{4}[/tex] × [tex]\frac{5}{5} = \frac{5}{20}[/tex]
[tex]\frac{2}{5}[/tex] × [tex]\frac{4}{4} = \frac{8}{20}[/tex]
[tex]\frac{5}{20} + \frac{8}{20} = \frac{13}{20}[/tex]
Answer:
I would walk [tex]\frac{13}{20}[/tex] or 0.65 miles.
Step-by-step explanation:
[tex]\frac{1}{4}[/tex] + [tex]\frac{2}{5}[/tex] = [tex]\frac{5}{20}[/tex] + [tex]\frac{8}{20}[/tex] = [tex]\frac{13}{20}[/tex] or 0.65
ASAP
Can someone help me with 2-10 I understand the first problem but I'm not really sure how to do the others.
Answer:
A e3 x0 +
Step-by-step explanation:
300
[tex]300 \div 0.5[/tex]
what is the answer
The factors of p2-2pq+q are
Answer:
Unsure
Step-by-step explanation:
did you forget the q^2
if so,
(p-q)^2
if not,
you can't simplify any further
Answer:
qp 2
Step-by-step explanation:
The digits of a two-digit number sum to 8. When the digits are reversed, the resulting number is 18 less than the original number. What is the original number?
26
35
53
62
Answer:
original number = 53
Step-by-step explanation:
In two digits number:
Let the tens place digit be x and units place digit be y.
So,
Original number = 10x + y
Number obtained after reversing the digits = 10y + x
According to the first condition:
x + y = 8.... (1)
According to the second condition:
10y + x = 10x + y - 18
10y + x - 10x - y = - 18
9y - 9x = - 18
-9(x - y) = - 18
x - y = - 18/(-9)
x - y = 2.......(2)
Adding equations (1) & (2), we find
x + y + x - y = 8 + 2
2x = 10
x = 10/2
x = 5
Plug x = 5 in equation (1), we find:
5 + y = 8
y = 8 - 5
y = 3
10x + y = 10*5 +3 = 50 + 3 = 53
Hence, original number = 53
At Kirby Middle School, some students were surveyed to see which social media app they used the most. The results are shown below. App Number of Students Face 8 Snap 22 Insta 20 Solve and explain how to calculate what percent of students used Snap the most?
Answer:
44% of students
Step-by-step explanation:
because the sum of all the students = 50, we jsut need to multiply by 2 to get 100 (which is the easiest number to get a percentage from. because we multiplied 50 by 2 we must multiply 22 by 2 which gives us 44. 44/100 =44%
Answer:
44%
Step-by-step explanation:
to solve for this you simply add the numbers together in order to get the total then once you find the total you didved the number you're trying to find the percent for by the total
What is 8+4-3 please
Answer:
9
Step-by-step explanation:
8+4=12
12-3=9
Answer:
9
Step-by-step explanation:
8+4=12
12-3=9
=9
Given PQ = y, RS = 4y - 15, QR = 2 +6, and PS = 4a - 6, solve for the
length of RS and QR.
Answer:
Check pdf
Step-by-step explanation:
HELP ME PLEASE NOBODY IS ACTUALLY HELPING THIS OS SO HARD AND IM STUCK 7TH GRADE MATH
WNBA Mean:__________
WNBA Mean Absolute Deviation:_________________
NBA Mean:___________________
NBA Mean Absolute Deviation:_______________________
The variability in heights is only different by _____________ inches.
Answer:
1. 72 [tex]\frac{5}{11}[/tex]
3. 79 [tex]\frac{5}{6}[/tex]
Step-by-step explanation:
The mean is found by dividing the sum of the inputs by the total number of inputs.
Answer:
enjoy your day hope the answer comes to you
Step-by-step explanation:
Define the range of the following:
Answer:
{-2, 3, 4, 5}
General Formulas and Concepts:
Math
Number LineAlgebra I
Range is the set of y-values that are outputted by function f(x)Builder Set Notation {x}Step-by-step explanation:
According to our graph, our y-values are 3, 4, 5 and -2. Since they are all closed dots, they are inclusive in the range:
Remember to put it in number line order.
{-2, 3, 4, 5}
Which of the following are characteristics of the cubic parent function? Select all that apply .
Answer:
A C & D
Step-step explanation:
Bryan and Serena had the same amount of money initially. After Bryan donated $258 and Serena donated $234 to charity, Serena had 4 times as much as Bryan. How much had Serena in the end?
Answer:
Serena had $32 at the end.
Step-by-step explanation:
They both had x in the beginning.
Bryan donated $258, so now he has
x - 258
Serena donated $234, so now she has
x - 234
Serena now has 4 times as much money as Bryan.
x - 234 = 4(x - 258)
x - 234 = 4x - 1032
-3x = -798
x = 266
They both had $266.
$266 - $234 = $32
Answer: Serena had $32 at the end.
Find the area of the shape
Answer:
14 units²
Step-by-step explanation:
The area of the shape = area of a triangle
Area of triangle = ½ × base × height
base = 7
height = 4
Plug in the value into the formula:
Area = ½ × 7 × 4
Area = ½ × 28
Area = 14 units²