MATHEMATICS MIDDLE SCHOOL

Find the volume of the composite figure. please!

Answers

Answer 1

Answer: 52ft cubed, because 4 times 2 times two plus 6 times 2 plus 3 equals 52.

Answer 2

Answer:

Answer:

Step-by-step explanation:

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Which expression is equivalent to –8? –2–3

(-1/2)^-3

(1/2)^-3

2–3

Answers

Answer: second option. (NOTE: If the first option is $(-2)^3$ , then it would be an equivalent expression too, because: $(-2)(-2)(-2)=-8$ )

Step-by-step explanation:

To solve this problem you must keep on mind the following exponents rule:

$((1)/(a))^-b=a^b$

Therfore, you have that:

$(-(1)/(2))^-3=(-2)^3$

This means that the number -2 must be multiply by itself three times. Therefore, you obtain the folllowing result:

$(-2)(-2)(-2)=-8$

If the first option is $(-2)^3$ , then it would be an equivalent expression too, because:

$(-2)(-2)(-2)=-8$

Answer:

$((-1)/(2))^(-3) = -8$ .

Step-by-step explanation:

Given : –8.

To find : Which expression is equivalent.

Solution : We have given –8.

By the radical rule : $((-1)/(x))^(-a) = -x^(a)$ .

Then

$((-1)/(2))^(-3) = -2^(3)$ .

$((-1)/(2))^(-3) = -8$ .

Therefore, $((-1)/(2))^(-3) = -8$ .

A rectangle has a length of 5 inches and a width of 7 1/2 inces. What is the perimeter of the rectangle?

Answers

25 inches, it is a rectangle so it is 5x2 + 7 1/2x2

❤Please answer❤Yesterday a parking lot had 10 cars parked in the parking lot, 40% were silver, 3 were red, and the rest were blue. How many of the cars were blue?A. 2 Cars
B. 5 Cars
C. 3 Cars
D. 8 Cars

Answers

Answer:

C: 3 Cars

Step-by-step explanation:

40% of 10 is 4.

10 - 4 ( silver cars ) = 6

6 - 3 ( red cars ) = 3

So there are 3 blue cars.

^.^

- Amanda

The answer is c. 3 because 40% of 10=4+3=7. 10-7=3 therefore, the answer is three

Find the zeros of the function f(x)=2x^2-7x-30

Answers

$2x^2-7x-30=0 \n \na=2 \n b=-7 \n c=-30 \nb^2-4ac=(-7)^2-4 * 2 * (-30)=49+240=289 \n \nx=(-b \pm √(b^2-4ac))/(2a)=(-(-7) \pm √(289))/(2 * 2)=(7 \pm 17)/(4) \nx=(7-17)/(4) \ \lor \ x=(7+17)/(4) \nx=(-10)/(4) \ \lor \ x=(24)/(4) \nx=-(5)/(2) \ \lor \ x=6 \n\boxed{x=-2.5 \hbox{ or } x=6}$

Patti's Pet Palace has a 90-gallon fish tank. When it needs to be cleaned, it can be drained at a rate of 2 gallons per minute. Assuming the tank was full, and x represents the number of minutes the tank has been draining, which of the following equations represents the amount of water in the tank after x minutes?y = 2x + 90

y = 90x - 2

y = 90 - 2x

y = 2x - 90

Answers

y = 90 - 2x

This should be the correct answer

Your answer is y = 90 - 2x

Hope this helps.

Which expression stands for 32 more than a number d

Answers

32 + d is the equation in this given question or the word problem in mathematical form.

For example:
Given:
A+B+C = 47
B+C+D = 53
A+C+D = 55
A+B+D = 49

Notice that in the given equations, each of the variables is mentioned three times. So if get the total of all given equations we may get thrice the value of a set of variables
(A+B+C+D). (A+B+C+D)+ (A+B+C+D) + (A+B+C+D) = 204
3(A+B+C+D) = 204
A+B+C+D = 68

The sum of all variables is 68. If we subtract the given equation, which has one missing variable, from the value of the set computed, we may get the value of the missing variable.
(A+B+C+D) -     (A+B+C)           = D
   68 -       47                     = D
   21                     = D
(A+B+C+D) -     (B+C+D)           = A
68 -       53                     = A
      15                     = A
(A+B+C+D) -     (A+D+C)           = B
68 -       55                     = B
     13                     = B
(A+B+C+D) -     (D+A+B)           = C
   68 -       49                     = C
19                     = C

The answer is d + 32.

I hope this helps! Please mark as the Brainliest!

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