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mixas84 [53]
1 year ago
7

The length of a rectangle is 3 times twice the width. The perimeter is 36. What are the side lengths?

Mathematics
1 answer:
Svetllana [295]1 year ago
8 0

Answer & Explanation:

For this question, you need to figure out the length and the width because the area is directly related to them (A = l*w).

What we do know is that the perimeter is 36 inches. Since the perimeter is equal to P = 2l + 2w, we can say:

P = 36 = 2(3 + 2w) + 2(w), where the length l is 3 + 2w

Solve for w first, then solve for l. Use these values to find the area.

Pls, choose me as brainliest!

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The trip is 870 miles, one way. How many miles do they travel there and back?
Natasha2012 [34]

Answer:

1740 miles

Step-by-step explanation:

They drive the way twice; once they go there and then they go home. Therefore, 870 times 2 equals 1740.

5 0
3 years ago
Which of the following quartic functions has x=-1 and x=-2 as its only two real zeros
Brums [2.3K]
Quartic is 4th degree
the factors of an equation with roots r1,r2 is
(x-r1)(x-r2)
4th degree
it could be
(x-r1)¹(x-r2)³ or
(x-r1)²(x-r2)² or
(x-r1)³(x-r2)¹


roots or zeroes at x=-1 and x=-2
(x-(-1)) and (x-(-2))
(x+1) and (x+2)

the function could be factored into
(x+1)¹(x+2)³ or
(x+1)²(x+2)² or
(x+1)³(x+2)¹

expanded would be
x⁴+7x³+18x²+20x+9 or
x⁴+6x³+13x²+12x+4 or
x⁴+5x³+9x²+7x+2
one of those is the answer

4 0
3 years ago
Solve for x ~<br><img src="https://tex.z-dn.net/?f=3%20%5C%3A%20%2814%20-%205x%29%20%3D16%20-%20%2012x" id="TexFormula1" title="
lesya692 [45]

3(14 - 5x) = 16 - 12x

Distribute 3 throught the parentheses

42 - 15x = 16-12x

Move the variable to the left-hand side and change its sign

42 - 15x + 12x = 16

Move the constant to the right-hand side and change its sign

- 15x+12x=16 - 42

Collect like terms

- 3x =  - 26

Divide both sides of the equation by -3

\boxed{x =  \frac{26}{3} }

6 0
2 years ago
Read 2 more answers
A submarine traveling 200 meters below the surface of the ocean increases its depth by 45 meters. Adam says that the new locatio
melisa1 [442]

Adam made an error of 400 meters

Explanation:

Since, submarine traveling 200 meters below the surface of the ocean

and when the depth increases by 45 meters then submarine new location is

200+45=245 meters below from the surface of ocean.

But Adam says that new location is at -155 meters.

So, error is,   245-(-155)=400 meters

Learn more:

https://brainly.in/question/13000874

8 0
2 years ago
If it takes Daniel 9 hours to clean an office building and it takes Mark 6 hours, how long would it take the two of them, workin
padilas [110]

It would be 3 hours. This is 3 hours because the problem says that daniel takes 9 hours to clean and office building and mark takes 6 hours so if you subtract 9hours from 6 hours it would be 3 hours total. Now this can be 2 answers it can also be 15 hours if you were to add 9 hours to 6 hours.

7 0
2 years ago
Read 2 more answers
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