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2 years ago

13. The coefficient in 8p + 897 is? A. 8B. pC. =D. 897

Mathematics

2 answers:

nata0808 [166]2 years ago

8 0

8 is the answer , it’s the number placed with a variable before the next number or after the sign

Sever21 [200]2 years ago

3 0

Answer:

the correct answer is A. 8

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What is 10+0.6 (pls show steps on how you got an awnser :) )

loris [4]

Answer:

10.6

Step-by-step explanation:

ok so, since 10 doesn't have any decimals you can just add the 0.6 to 10 so it makes 10.6.

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3 years ago

17 + x =31 <br> i need help

Gelneren [198K]

Answer:

x= 14

Step-by-step explanation:

First (and only) we subtract 17 from both sides :

17 + x - 17 = 31 - 17

x = 31 - 17

x = 14

Hope this helped and have a good day

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2 years ago

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Keiko deposits $6000 into an account that pays simple interest at a rate of 3% per year. How much interest will she be paid in t

irina1246 [14]

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540

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3 years ago

A rectangular box is to have a square base and a volume of 12 ft3. If the material for the base costs $0.17/ft2, the material fo

katen-ka-za [31]

Answer:

(a)Length =2 feet

(b)Width =2 feet

(c)Height=3 feet

Step-by-step explanation:

Let the dimensions of the box be x, y and z

The rectangular box has a square base.

Therefore, Volume of the box $V=x^2z$

Volume of the box $=12 ft^3\\$

$Therefore, x^2z=12\\z=\frac{12}{x^2}$

The material for the base costs $\$0.17/ft^2$ , the material for the sides costs $\$0.10/ft^2$ , and the material for the top costs $\$0.13/ft^2$ .

Area of the base $=x^2$

Cost of the Base $=\$0.17x^2$

Area of the sides $=4xz$

Cost of the sides= $=\$0.10(4xz)$

Area of the Top $=x^2$

Cost of the Base $=\$0.13x^2$

Total Cost, $C(x,z) =0.17x^2+0.13x^2+0.10(4xz)$

Substituting $z=\frac{12}{x^2}$

$C(x) =0.17x^2+0.13x^2+0.10(4x)(\frac{12}{x^2})\\C(x)=0.3x^2+\frac{4.8}{x} \\C(x)=\dfrac{0.3x^3+4.8}{x}$

To minimize C(x), we solve for the derivative and obtain its critical point

$C'(x)=\dfrac{0.6x^3-4.8}{x^2}\\Setting \:C'(x)=0\\0.6x^3-4.8=0\\0.6x^3=4.8\\x^3=4.8\div 0.6\\x^3=8\\x=\sqrt[3]{8}=2$

Recall: $z=\frac{12}{x^2}=\frac{12}{2^2}=3\\$

Therefore, the dimensions that minimizes the cost of the box are:

(a)Length =2 feet

(b)Width =2 feet

(c)Height=3 feet

7 0

3 years ago

What is the area of the given circle use 3.14 for pie diameter =18cm

Vladimir79 [104]

Answer:

254.47

Step-by-step explanation:

1/4 $\pi$ d^2

8 0

3 years ago

13. The coefficient in 8p + 897 is? A. 8B. pC. =D. 897​

13. The coefficient in 8p + 897 is? A. 8B. pC. =D. 897