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s2008m [1.1K]
3 years ago
12

If one edge of a cube is 3 inches long, what is the surface area of the cube? A. 9 square inches B. 18 square inches C. 27 squar

e inches D. 30 square inches E. 54 square inches
Mathematics
1 answer:
VLD [36.1K]3 years ago
8 0

<u>Answer:</u>

The correct answer option is E. 54 square inches.

<u>Step-by-step explanation:</u>

We are given that the length of one edge of a cube is 3 inches long and we are to find its surface area.

We know that the formula of the surface area of a cube is given by:

Surface Area of Cube = 6 a^2

Substituting the given values in the above formula to get:

Surface area of cube = 6(3)^2 = 54 square inches

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x= 1, 2, 3, 4, 5. y=11\4, 25\4, 39\4, 53\4, 67\4. what equation relates y to x in the values x and y?
larisa86 [58]
(1,11/4)(2,25/4)
slope = (25/4 - 11/4) / (2 - 1) = (14/4) / 1 = 14/4 = 7/2

y = mx + b
slope(m) = 7/2
(1,11/4)...x = 1 and y = 11/4
now we sub and find b, the y int
11/4 = 7/2(1) + b
11/4 = 7/2 + b
11/4 - 7/2 = b
11/4 - 14/4 = b
-3/4 = b

so ur equation is : y = 7/2x - 3/4
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3 years ago
A family of 8 goes to the amusement park. Each ride at the park costs 1 ticket per person. If they all go on every ride together
Alexxx [7]

Answer: A. 42 tickets

Step-by-step explanation: 8, 16, 24, 32, 40, 48

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3 years ago
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Dainel paid $22 for a water bottle. This amount includes 5% tax. What was the cost of the item befor tax?
Oksana_A [137]
20.90 would be the item before tax. To get the amount of tax, I multiplied 20 by 0.05 and subtracted that amount from 22
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What is 4.8x ten to the power of 8
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3 years ago
Pizza Uno offers 2/3 of a small pizza for $3.50. Pizza Duo offers % of a small pizza for $4.20. How much does each charge for a
Phantasy [73]

Answers:

  • Pizza Uno = $5.25
  • Pizza Duo = $5.60

Those are the costs for a whole small pizza.

==========================================================

Explanation:

Let

  • x = cost of whole small pizza from Pizza Uno
  • y = cost of whole small pizza from Pizza Duo

x and y are some dollar amount, so they cannot be negative numbers. It also doesn't make sense to have them be 0 either. So we'll make them positive.

2/3 of x is equal to 3.50 as the first sentence mentions. This forms the equation (2/3)*x = 3.50

Multiply both sides by the reciprocal of 2/3 to isolate x

(2/3)*x = 3.50

(3/2)*(2/3)*x = (3/2)*3.50

x = 5.25

Pizza Uno charges $5.25 for a whole small pizza.

----------------------------

Pizza Duo charges $4.20 for 3/4 of a small pizza, meaning the equation we need to solve is

(3/4)y = 4.20

We'll use the same idea as the last equation to get...

(3/4)y = 4.20

(4/3)*(3/4)y = (4/3)*4.20

y = 5.60

Pizza Duo charges $5.60 for a whole small pizza.

Pizza Uno is the better deal (assuming both pizzas taste the same or you don't have a preference for either). You would save $5.60 - $5.25 = $0.35 = 35 cents.

7 0
3 years ago
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