All categories

3 years ago

Solve the system by substitution. y = 3x y = -4x – 49

Mathematics

1 answer:

Alex787 [66]3 years ago

6 0

Answer:

Step-by-step explanation:

Substitute 3x into y=-4x-49

y=−4x−49

3x=−4x−49

3x+4x=−4x−49+4x(Add 4x to both sides)

7x/7=−49/7

(Divide both sides by 7)

x=−7

Step: Substitute−7forxiny=3x:

y=3x

y=(3)(−7)

y=−21(Simplify both sides of the equation)

Answer:

x=−7 and y=−21

You might be interested in

BRAINLIEST Please answer these

zheka24 [161]

3.14 is used for pi.

6. r = $\sqrt{\frac{A}{\pi } }$

14.00

7. d = $\frac{c}{\pi }$

5.00

8. d = $2 \sqrt{\frac{A}{\pi } }$

23.01

9. r = $\frac{c}{2\pi }$

20.01

10. d $\pi$ = $2 \sqrt{{A}$

31 $\pi$

11. r $\pi$ = $\frac{c}{2}$

22.5 $\pi$

Hope this helps :)

6 0

3 years ago

A business person invested $3600.00 in stock .When he sold the stock he made $30.00 in profit for each share of stock he purchas

Usimov [2.4K]

Given that the total profit is $2400.00 and he made $30.00 in profit for each share.

Number of shares = $2400 ÷ 30 = 80

Answer: He bought 80 shares

5 0

3 years ago

if the probability of getting a 6 on a biased dice is 4/5, and you roll it 500 times, how many 6s would you expect to roll

Tresset [83]

I believe the answer would be 400 you take 4/5 and multiply it by 500

3 0

3 years ago

Mrs. Hinojosa head 75 ft of ribbon if each of the 18 students in her class gets an equal length of ribbon how long would each pi

Helen [10]

Answer:

4 1/6 ft

Step-by-step explanation:

Since each of the 18 students gets an equal length of ribbon, we need to divide the 75 ft of ribbon into 18 equal parts.

75/18= 4 1/6

Each student gets 4 1/6 ft of ribbon

4 0

3 years ago

An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $6830 and his st

tatiyna

Step-by-step explanation:

An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $6830 and his stock in Company B was worth $2600. The stock in Company A has increased 20% since last year and the stock in Company B has increased 5%. What was the total percentage increase in the investor's stock account? Round your answer to the nearest tenth (if necessary).

5 0

3 years ago