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Drupady [299]
3 years ago
8

The length of a rectangle is 2 meters more than its width. The area of the rectangle is 80 square meters. What is the length and

width of the rectangle? A. length = 10 meters, width = 8 meters B. length = 8 meters, width = 6 meters C. length = 20 meters, width = 4 meters D. length = 14 meters, width = 12 meters
Mathematics
1 answer:
insens350 [35]3 years ago
8 0

Answer:

Step-by-step explanation:

Formula

A = L * W

Givens

W = W

L = W + 2

Solution

Area = L*W

Area = (W+2)*W = 80            Remove the brackets.

Area = W^2 + 2W = 80         Subtract 80 from both sides.

Area = w^2+2W-80=80-80  Combine

Area = w^2 +2W-80 = 0        Factor.

Area = (w+10)(w - 8) = 0

W + 10 = 0 won't work

W = - 10 which isn't possible

W- 8 = 0

W = 8

L = 8 + 2 = 10

The answer looks like A

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Answer:

Step-by-step explanation:

Two angles are complementary if they add up to 90 degrees.

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4 0
4 years ago
Multiply: 3m3(2m2 + 3m − 1) 6m6 + 6m4 15m6 − 9m3 6m5 + 9m3 − 3m3 6m5 + 9m4 − 3m3
nalin [4]

Step-by-step explanation:

hope this helps you out

3 0
3 years ago
It is not a function because both (2, 2) and (2,−2) have the same x-coordinate. It is a function because both (2, 2) and (2,−2)
olya-2409 [2.1K]

Answer:

It is not a function because both (2,2) and (2,-2) have the same x-coordinate.

Step-by-step explanation:

To be a function for the same x value there should NOT be two different y values.

So, in (2, 2) and (2,-2)

For the same x value 2, there are two different y values 2, -2.

So, this is not a function.

3 0
3 years ago
2= 2.27- m/4<br><br> How do I do this?! I need this for mathematics homework!
netineya [11]

Answer:

1.08 = m

Step-by-step explanation:

2= 2.27- m/4

Subtract 2.27 from each side

2-2.27= 2.27-2.27- m/4

-.27 = -m/4

Multiply each side by -4

-.27 * -4 = -m/4 *-4

1.08 = m

6 0
3 years ago
Find the minimum value of the function f(x) = 0.9x2 + 3.42 – 2.4 to the nearest<br><br> hundredth.
Olenka [21]

This question was not written properly

Complete Question

Find the minimum value of the function f(x) = 0.9x² + 3.42x - 2.4 to the nearest

hundredth.

Answer:

The minimum value for the function:

f(x) = 0.9x² + 3.42x - 2.4 is (-1.9, -5.65)

Step-by-step explanation:

Our quadratic equation =

ax² + bx + c

f(x) = 0.9x² + 3.42x - 2.4

The minimum value of x formula=

x = -b/2a

a = 0.9

b = 3.42

x = -3.42/2 × 0.9

x = -3.42/1.8

x = -1.9

We input the value x in order to get the minimum value of y

f(x) = y

f(x) = 0.9x² + 3.42x - 2.4

f(-1.9) = 0.9(-1.9)² + 3.42(-1.9) - 2.4

= 3.249 - 6.498 - 2.4

=3.249 - 8.898

= -5.649

Approximately to the nearest hundredth = -5.65

Therefore, the minimum value for the function:

f(x) = 0.9x² + 3.42x - 2.4 is (-1.9, -5.65)

8 0
3 years ago
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