2 years ago

Solve using substitutuon6x+7y=8. y=-2x

Mathematics

1 answer:

belka [17]2 years ago

4 0

You plug in 2x in the equation for y. Since y =2x. 6x+7(2x)=8 6x+14x=8. 20x=8. X=8/20. X=2/5. Is your final answer

You might be interested in

Find the sum of the first 9 terms of the following sequence. Round to the nearest

aivan3 [116]

Answer:

Your missing a number and your answer is 12

Step-by-step explanation:

4 0

2 years ago

tapes-r-us is have a sale on hq tape players. The regular price is $60. The discount is $18. What percent discount is this?

olga nikolaevna [1]

The discount is 30%

Step-by-step explanation:

Given

Price of tape = $60

Discount = $18

In order to find the percentage, we will use the percentage formula

$Percentage = \frac{discount}{Price}*100\\= \frac{18}{60} *100\\=0.3 * 100\\= 30\%$

Hence,

The discount is 30%

Keywords: Percent, sale

Learn more about percentage at:

#LearnwithBrainly

7 0

2 years ago

Describe the graph of x ≤ −2

Len [333]

<h3>I hope it is helpful for you </h3>

4 0

2 years ago

At t=0, a rock is dropped from rest from the top of a building 256 ft high. With what velocity will it strike the ground? What i

Rasek [7]

Answer:

128 ft / second.

Step-by-step explanation:

It's acceleration is due to gravity and is 32 ft s^-2.

To find the velocity when it hits the ground we use the equation of motion

v^2 = u^2 + 2gs where u = initial velocity, g = acceleration , s = distance.

v^2 = 0^2 + 2 * 32 * 256

v^2 = 16384

v = 128 ft s^-1.

4 0

2 years ago

If the perimeter of a rectangle or piece of glass is 26 inches and the length is 4 inches longer than twice the width and what a

cricket20 [7]

2(2w+4+w)=26; 6w+8=26; w=3, l=10

5 0

2 years ago