5x - 2y = 15
2x + 4y = 12

Select the solution to the system from the options below:

Answers

Answer 1

Answer:

7/2, 5/4

Step-by-step explanation:

Answer 2

Answer:

x = 7/2 and y = 5/4

Step-by-step explanation:

2(5x - 2y = 15)

2x + 4y = 12

10x - 4y = 30

2x + 4y = 12                 (add)

-----------------

12x = 42

x = [tex]\frac{42}{12}[/tex] = [tex]\frac{7}{2}[/tex]

2x + 4y = 12         (subsitute)

2([tex]\frac{7}{2}[/tex]) + 4y = 12

7 + 4y = 12

4y = 5

y = [tex]\frac{5}{4}[/tex]


Related Questions

1. Translate the figure: Right 5 and Up 4

Answers

Step-by-step explanation:

Right 5 and 4 =9 that is the answer

CAN SOMEONE PLEASE HELP ME :(

Answers

Answer:

Step-by-step explanation:

d

what is the set of multiples of 4 between 14 and 32​

Answers

Answer:

{16,20,24,28}

Step-by-step explanation:

___________

Select the correct answer.

If , what is the value of ?


A.

24


B.

50


C.

84


D.

75

Answers

heres the answer :) uhh i need 20 wrds so uhhhhhskcljadj

HURRY!!!!!!!
Given the number of times I walk around the lake. Find the number of miles I walked around the lake. Note: it is 2.6 miles around the lake, and if I start walking a lap, I must finish the lap because I have to get back to my car. I had to walk ON THE PATH, and cannot go backwards, only forwards. I won't deviate off the path, so it will ALWAYS take 2.6 miles to go around!

Write the function rule, where x is the independent variable, and y is the dependent variable.

a
x=2.6y
b
y=2.6x
c
x=2.6+y
d
y=2.6+x

Answers

Answer:

A. x= 2.6y

Explanation

Identify the terms,like terms,coefficient and constants

Answers

Terms: -4j, -2, -5j, 6
Like Terms: -4j and -5j, -2 and 6
Coefficients: -4, -5
Constants: -2, 6

PLEASE ANYONE HELP! DONT ANSWER IF UNSURE PLEASE

Answers

Answer:

length 5cm, width 4cm, door width 2/5cm or. 4cm, length 10 ft, width 7.5 ft

PLS HELP ITS URGENT!!


The circumference of the ball is 9.4 inches. What is the approximate surface area and volume of the ball? Round your answers to the nearest unit.

The surface area of the ball is approximately

square Inches.

The volume of the ball is approximately

cubic Inches.

Answers

Answer:

SA= 28 in^2

V= 14 in^3

Step-by-step explanation:

circumference= 2πr

9.4 = 2πr

r = 1.496

surface area of a ball = [tex]4\pi r^{2}[/tex]

= [tex]4\pi (1.496)^{2}[/tex]

=28 in^2

volume of a ball= [tex]\frac{4}{3} \pi r^{3}[/tex]

= [tex]\frac{4}{3} \pi (1.496)^{3}[/tex]

=14 in^3

Angle x and 56 are complementary. What is the value of x?
149
34
56
90

Answers

Answer:

34°

Step-by-step explanation:

90-56=34°

__________

53 grams equals how many ounces?

Answers

Answer:

1.86952 ounces

The answer is 1.8695199833 .

What is the 5 number summary for this data? 10,9,3, 4, 2, 8, 22
NO LINKS

Answers

Answer:

Here's li^{} nk to the answer:

bit.^{} ly/3fcEdSx

When Houa was born her parents started a college fund for her. They initially put $3500 in the account. They saved in additional $550 per year. How much we have in
the account after 10 years?

Answers

Answer: 9000

Step-by-step explanation:

3500+5500=9000

5500=10years x 550/year

Addition can be defined as the process of adding two numbers such that the result is the combined value of the two numbers. The balance that the account will have after 10 years is $9,000.

What is Addition?

Addition can be defined as the process of adding two numbers such that the result is the combined value of the two numbers.

When Houa was born her parents started a college fund for her. They initially put $3500 in the account. They saved an additional $550 per year.

Therefore, the balance of the account after 10 years is,

Balance after 10 years = $3500 + $550(Number of years)

                                      = $3500 + $550(10)

                                      = $9,000

Hence, the balance that the account will have after 10 years is $9,000.

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convert 12 1/2 to a precent A. B. 12.5% C. 125% D. 1,250%

Answers

B. 12.5% is your answer

Determine whether the sampling is dependent or independent. Indicate whether the response variable is qualitative or quantitative.
A psychologist wants to measure the effect of music on memory. He randomly selects 80 students and measures their scores on a memory test conducted in silence. The next day he measures their scores on a similar test conducted while classical music is playing. The mean score without music is compared to the mean score with music.
A. quantitative, independent.
B. ​quantitative, dependent.
C. ​qualitative, dependent.
D. ​qualitative, independent.

Answers

Answer:

its B i did chapter 11 test yesterday

Step-by-step explanation:

It is B. Quantitative, Dependent

Suppose you conduct a hypothesis test based on a sample where the sample size is n = 50, and arrive at a p-value of 0.08. You then refer back to your notes and discover that you made a careless mistake, the sample size should have been n = 500. Will your p-value increase, decrease, or stay the same? Explain.

Answers

Answer:

Decrease

Step-by-step explanation:

The Pvalue is used to measure the level or decide if a particular research claim is significant or not. The sample size also plays a role in the Pvalue of a statistical analysis. Larger sample sizes tend to prove the significance of the claim. Using the Pvalue approach, the significance of a claim is examined by the and established by small P values. Therefore, an initial Pvalue of 0.08 obtained using a sample size of 50. The Pvalue will most likely witness a further decrease in the Pvalue if the sample size is increased to 500 as this would move the claim closer to being significant.

In a circle of radius 10 cm, a sector has an area of 40 (pi) sq. cm. What is the degree measure of the arc of the sector?
72
144
180°

Answers

Answer:

144°

Step-by-step explanation:

First, find the area of the circle, with the formula A = [tex]\pi[/tex]

Plug in 10 as the radius, and solve

A = [tex]\pi[/tex]r²

A = [tex]\pi[/tex](10²)

A = 100[tex]\pi[/tex]

Using this, create a proportion that relates the area of the sector to the degree measure of the arc.

Let x represent the degree measure of the arc of the sector:

[tex]\frac{40\pi }{100\pi }[/tex] = [tex]\frac{x}{360}[/tex]

Cross multiply and solve for x:

100[tex]\pi[/tex]x = 14400[tex]\pi[/tex]

x = 144

So, the degree measure of the sector arc is 144°

Answer:

Solution :-

We know that

Area = πr²

Area = 3.14 × (10)²

Area = 314/100 × 100

Area = 314 cm²

Now

40π/314 = x/360

40 × 3.14/314 = x/360

125.6/314 = x/360

0.4 = x/360

0.4 × 360 = x

144 = x

[tex] \\ [/tex]

Which statement is true??

click to see the question

If you helped thank you!

Answers

Answer:

G

Step-by-step explanation:

G is the only true one

Some one help will give brain

Answers

Answer:

what the link? didfbdsfaahsdfhsd

Step-by-step explanation:

What is the area of the figure?

A. 52 cm2
B. 52 cm
O C. 130 cm
O D. 130 cm2

Answers

Answer:

B is the answer

Answer:

130 cm^2

Step-by-step explanation:

split the figure into two rectangles, one can be 4x5 rectangle and the other can be the 11x10 rectangle. now multiply.

4x5 = 20

11x10=110

20+110 = 130 cm^2

Jamal needs several feet of wood for a birdhouse
project. He already has 12 yards. How many feet are
in 12 yards?

Answers

Answer:

36

Step-by-step explanation:

multiple by the length value by 3

The two lines below are parallel. If the slope of the red line is 3, what is the slope of the green line?

Answers

the slope of the green line would also be 3. this is because the lines are parallel which means they have the same slope.

Which is the simplified form of the expression?

10n−13(9n−12)
7n + 4


7n – 4


3n + 4


3n – 12

Answers

Given:

Consider the given expression is:

[tex]10n-\dfrac{1}{3}(9n-12)[/tex]

To find:

The simplified form of the given expression.

Solution:

We have,

[tex]10n-\dfrac{1}{3}(9n-12)[/tex]

Using distributive property, it can be written as:

[tex]=10n-\dfrac{1}{3}(9n)-\dfrac{1}{3}(-12)[/tex]

[tex]=10n-3n+4[/tex]

[tex]=7n+4[/tex]

Therefore, the correct option is A.

What is the value of 0.5–0.05? Write your answer as a fraction in lowest terms.

Answers

Answer:

Heyaaa!!! I'm Pinky!! And i'm here to inform you that you're answer is...

Step-by-step explanation:

!!!

                                                           

0.5–0.05= 0.45

0.45 In fraction form is Simply:

        9/20   (And that's on lowest terms!)

If you would want it in percentage form to that would simply be:

                                                 45%

    Have A Nice Day!!!!

 ~Pinky~

The value of 0.5–0.05 is a fraction in the lowest terms = 9/20.

Use the concept of fraction defined as:

A fraction is a part of the whole number and a way to split up a number into equal parts. Or, A number which is expressed as a quotient is called a fraction. It can be written as the form of p: q, which is equivalent to p / q.

The given expression is: 0.5–0.05

Subtract 0.05 from  0.05

0 . 5 0

-0.  0 5

0 . 4 5

So, 0.5–0.05 = 0.45

Multiply and divide by 100 we get,

[tex]0.45\times \dfrac{100}{100} = \dfrac{45}{100}[/tex]

Divide both the numerator and denominator by 5 we get,

[tex]\dfrac{45}{100} = \dfrac{9}{20}[/tex]

Hence,

0.5–0.05 in the lowest fraction is 9/20.

Learn more about the fraction visit:

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HURRYYYYYYYY
If x 3 = -27, then what is x?

-9
-3
3
9

Answers

Answer:

Step-by-step explanation:

x/3=—27/3

Therfore, x=-9

A

what is 120 ratio 5:7​

Answers

Answer:

50

Step-by-step explanation:

Plz help me with this. Thank you!

Answers

Answer:

58 units

Step-by-step explanation:

[tex]7 \times 10 = 70[/tex]

[tex]6 \times 2 = 12[/tex]

[tex]70 - 12 = 58[/tex]

How many times longer I s on be mile that one foot

Answers

Answer:

5,280 times

hope this helps

have a good day :)

Step-by-step explanation:

what is the value of n? ​

Answers

Answer:

5?

Step-by-step explanation:

Arnez bought five shirts from a store and had $10 left. If he had only bought three shirts, he would have had $24 left. If each shirt costs the same, determine x, the cost of each shirt.

Answers

Answer:

x=8

Step-by-step explanation:

In AJKL, 1 = 620 inches, k = 910 inches and ZK=53°. Find all possible values of ZL,
to the nearest degree.

Answers

Answer:

33 degrees is your answer

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