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kakasveta [241]
3 years ago
10

Help needed asap will give brainliest (#^.^#)

Mathematics
1 answer:
Mashcka [7]3 years ago
7 0

Answer:

B. 162ft^{2}

Step-by-step explanation:

Area= 7*6*2+3*6*2+3*7*2=84+36+42=162ft^2

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Find EF if EM= x^2+25 and MF = 10x
N76 [4]

Answer:

x^2 + 10x + 25; (x + 5)^2.

Step-by-step explanation:

When we're talking about line segments, we just have to find the sum of the two parts of the line segment to find the value of the whole. In this case, we have x^2 + 25, and 10x. So, we add them together.

x^2 + 25 + 10x

= x^2 + 10x + 25

Since this can be immediately factored into (x + 5)^2, you have your answer.

Hope this helps!

7 0
3 years ago
Click photo for question and options !!!!!
dezoksy [38]
\sqrt[5]{x} =  x^{\frac{1}{5}}\\
\\
 \sqrt[5]{x} * \sqrt[5]{x} * \sqrt[5]{x} * \sqrt[5]{x} =\\
x^{\frac{1}{5}}*x^{\frac{1}{5}}*x^{\frac{1}{5}}*x^{\frac{1}{5}}=\\
x^{\frac{4}{5}}

so it is the last option
8 0
3 years ago
A rectangular cow pasture is enclosed on three sides by a fence and the fourth side is part of the side of a barn that is $400$
Rudiy27

Let us list out the given information:

Cost per foot = $5

Total fencing cost = $1200

Let L be the length of the barn that will maximize the area of the pasture and W be the width of the rectangular cow pasture.

From the given information, we need to do the fencing for three sides covering 1 L and 2 W's because other L will be the fourth side is part of the side of a barn. We need to write the equation based on the cost information.

If cost/foot is $5, then cost of length ' L ' will be 5L dollars and cost of '2W' width equals 10W dollars. Total cost is $1200. We can set up second equation as

5L + 10W = 1200. This can be simplified by dividing throughout the equation by 5 to get L+ 2W= 240. Solving for L we get L = 240 - 2W

Area of a rectangle is given by A = L ×W.

Substituting 240 - 2W for L we get the area function as..

A=(240 - 2W)×W= 240W-2W²

A = -2W²+240W.

When we have a function of the form f(x) = ax^2 + bx + c, then maximum value of the function can be obtained for x = -b/2a. Using that idea we can find the maximum area.

Here in the area function a = -2 and b = 240

For W = -b/2a = -240/2(-2) = -240/-4 = 60 feet, we get maximum area.

The question is asking us to find Length. We can substitute W = 60 in the equation L = 240 - 2W to find the Length.

L = 240 - 2(60) = 240 - 120 = 120 feet.

Conclusion: The length of the side parallel to the barn that will maximize the area of the pasture is 120 feet.

Note: Here the information 400 feet in the sentence "the fourth side is part of the side of a barn that is 400 feet long" given to distract us, we might not require that information to find the Length.

3 0
3 years ago
3. Which of the following illustrates how to find the difference of 5h3k and -4hk%? (5 – 4)kºk (544) 3-161-3 Not possible. O (5+
vladimir1956 [14]

Answer:

Not possiblie

Step-by-step explanation:

I took the test

6 0
3 years ago
Suppose the sphere below with radius r has a surface area equal to 45 units
Leviafan [203]

Answer:

180 units 2 ..............

3 0
3 years ago
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