3 years ago

I am really confused on questions 1-5 can you please help?????

Mathematics

1 answer:

Norma-Jean [14]3 years ago

5 0

I can answer 1 it would be 2.5x+5y=20

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Shannon is planning to tile a rectangular kitchen countertop that is 24 inches wide and 64 inches long. She determined that 1 ti

kow [346]

Answer:

Step-by-step explanation:

$\frac{24*64}{4*4}=96\\$

$\frac{24}{4}=6, \frac{64}{4}=16\\6*16=96$

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3 years ago

If 1900 square centimeters of material are available to make a box with a square base and an open top, find the largest possible

Evgen [1.6K]

Answer:

Volume = $7969$ cubic centimeter

Step-by-step explanation:

Let the length of each side of the base of the box be A and the height of the box be H.

Area of material required to make the box is equal to is $A^2 + 4*A*H.$

$A^2 + 4*A*H = 1900$

Rearranging the above equation, we get -

$`H = \frac{(1900 - A^2)}{(4*A)}$

Volume of box is equal to product of base area of box and the height of the box -

$V = A*A* H$

Substituting the given area we get -

$\frac{A^2*(1900 - A^2)}{4A} = \frac{(1900*A - A^3)}{4}$

For maximum volume

$\frac{dV}{dA} =0$

$\frac{ 1900}{4} - \frac{3*A^2}{4} = 0$

$A^2 = \frac{1900}{3}$

Volume of the box

= $\frac{\frac{1900}{3}*(1900 - \frac{1900}{3}) }{4 * \sqrt{\frac{1900}{3} } }$

= $7969$ cubic centimeter

3 0

3 years ago

2,500 principal earning 4% compounded quarterly after 4 years

Kay [80]

A=p(1+r/100)^n
A=2500(1+4/400)^16
A=2931.45

5 0

3 years ago

Vector component of ū and w are as

Helen [10]

Answer:

r = ( -14.4 , 6.47 )

Step-by-step explanation:

in the photo you will find all the steps

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2 years ago

I will mark brainliest and giving 20 points

goblinko [34]

Answer:

C. 80

Step-by-step explanation:

5x10x.5=25

25x2=50

3x10=30

50+30=80

4 0

2 years ago

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