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elena-s [515]
3 years ago
13

Math Please Help! I need this done ASAP.

Mathematics
2 answers:
Serggg [28]3 years ago
8 0

Answer: I am pretty sure it is

B 5x + 35

Likurg_2 [28]3 years ago
3 0
B because using the distributive property you take that five and multiply it by everything in the parenthesis

5•x and 5•7
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Margos paycheck was $96 in total
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What does algebra mean?
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The part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
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2 years ago
Write the next three terms of the arithmetic sequence <br> 1) -7, -14, -21, -28
Sunny_sXe [5.5K]

Step-by-step explanation:

This sequence is the table of 7 it is negative we will continue so

-7 -14 -21 -28 -35 -42 -49

5 0
3 years ago
You are to manufacture a rectangular box with 3 dimensions x, y and z, and volume v=8000. Find the dimensions which minimize the
Inga [223]

Answer:

20 by 20 by 20

Step-by-step explanation:

Let the total surface of the rectangular box be expressed as S = 2xy + 2yz + 2xz

x is the length of the box

y is the width and

z is the height of the box.

S = 2xy + 2yz + 2xz ... 1

Given the volume V = xyz = 8000 ... 2

From equation 2;

z = 8000/xy

Substituting into equation 1;

S = 2xy + 2y(8000/xy)+ 2x(8000/xy)

S = 2xy+16000/x+16000/y

Differentiating the resulting equation with respect to x and y will give;

dS/dx = 2y + (-16000x⁻²)

dS/dx = 2y - 16000/x²

Similarly,

dS/dy = 2x  + (-160000y⁻²)

dS/dy = 2x - 16000/y²

Note that at the turning point, ds/dx = 0 and ds/dy = 0, hence;

2y - 16000/x² = 0 and 2x - 16000/y² = 0

2y = 16000/x² and 2x = 16000/y²

2y = 16000/(8000/y²)²

2y = 16000×y⁴/64,000,000

2y = y⁴/4000

y³ = 8000

y =³√8000

y = 20

Given 2x = 16000/y²

2x = 16000/20²

2x = 16000/400

2x = 40

x = 20

Since Volume of the box is V = xyz

8000 = 20(20)z

8000 = 400z

z = 8000/400

z = 20

Hence, the dimensions which minimize the surface area of this box is 20 by 20 by 20.

3 0
3 years ago
I will give you BRAINLIEST for the correct answer
Nadya [2.5K]

Answer:

a or b

Step-by-step explanation:

if I did the math right it's a but I tried another way and got b, so I'm sorry if that was no help at all

6 0
2 years ago
Read 2 more answers
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