2 years ago

How to solve 4y=x 3x- y=70 using substitution

1 answer:

7 0

X = 4y
3x - y = 70

substitute the x in the second equation with the other half of the first equation.

3(4y) - y = 70
12y - y = 70
11y = 70
y = 6.36 repeating, or 6 4/11

now use this to solve first equation
x = 4 (6 4/11)
x = 25.45 repeating

done

You might be interested in

This graph shows a proportional relationship. What is the constant of proportionality? Enter your answer as a ratio in simplifie

kramer

This graph shows a proportional relationship. What is the constant of proportionality? Enter your answer as a ratio in simplified form in the box.

4 0

2 years ago

Read 2 more answers

Curtis spent $60 less than 3 times what Jaclyn spent. Curtis spent $36. How much did Jaclyn spend?

Rainbow [258]

Answer:

hsjsjjjsijsjbduejwns

5 0

2 years ago

Read 2 more answers

Create the exponential equation based on the scenario below: $2000 is invested in an account at an interest rate of 1.8% compoun

yarga [219]

Answer:

P(t) = 2000 · e^((1.8 / 100) ·t)

Step-by-step explanation:

8 0

2 years ago

PLEASE HELP ME FIGURE THIS OUT 1......

MA_775_DIABLO [31]

Make sure your calculator is in "Deg" <em>(degrees)</em>.
Input "32"
Click on the "sin" button.

Answer: 0.5514

*********************************************************************

Answer: tan θ

<u>Step-by-step explanation:</u>

cotθ * sin²θ * sec²θ

= $\frac{cos}{sin} * \frac{sin*sin}{1} * \frac{1}{cos*cos} = \frac{sin}{cos}$ = tan

8 0

2 years ago

Can somebody please help me with this question

Tom [10]

Answer:

number 2

Step-by-step explanation:

A cougar did not attack to the victim.ibthinj this is answer

5 0

2 years ago