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antoniya [11.8K]
3 years ago
9

Which expression is equivalent to 21d + 18

Mathematics
2 answers:
sladkih [1.3K]3 years ago
5 0

Answer:

it’s c

Step-by-step explanation:

i’m smart

ra1l [238]3 years ago
4 0
C! Is the correct answer
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Bradley has a goal to work 28 hours each week at the pizza shop. So far he has worked 12 hours. How many more hours does he need
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Answer:

16 hours

Step-by-step explanation:

28 hours - 12 hours = 16 hours

Bradley has 16 hours of work to achieve in order to reach his weekly goal.  

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3 years ago
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The product of x and 8 is not less than 16
Marrrta [24]

Answer:

x ≥ 2

Step-by-step explanation:

The inequality would be: <em>x * 8 ≥ 16</em>

8x ≥ 16

x ≥ 16/8

<u>x ≥ 2</u>

Hope this helps!

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3 years ago
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If gasoline sells for $1.25 per gallon, how much would 3 3/5 gallons cost? express your answer as a decimal
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3 3/5 gallons of gasoline would cost $4.50

This is because when you multiply 1.25 by 3 you get a product of 3.75.
Then, you multiple 1.25 with 3/5 and get a product of 0.75.
Add the two together, and you receive a sum of 4.50.
So, the cost for 3 3/5 gallon is $4.50.
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3 years ago
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The accompanying diagram show a cross-section of a rectangular pyramid. The cross sectional area is 36in and is 3 inches from th
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The area of the rectangular base is the amount of space on the rectangular base

The area of the rectangular base is 60 square inches

<h3>How to determine the area of the rectangular base?</h3>

The question is incomplete; as the diagram is not given.

So, I will apply the concept of similar shapes to determine the area of the rectangular base

To determine the area of the rectangular base, we make use of the following equivalent ratio:

Ratio = Height : Area

This gives

3 : 36 = 5 : Area

Express as fraction

36/3 = Area/5

Evaluate the quotient

12 = Area/5

Multiply both sides by 5

Area = 60

Hence, the area of the rectangular base is 60 square inches

Read more about areas at:

brainly.com/question/24487155

3 0
2 years ago
An object is thrown upward from the top of 96​-foot building with an initial velocity of 80 feet per second. The height h of the
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The function of the object height is an illustration of a projectile motion

The object will never hit the ground

<h3>How to determine when the object hits the ground?</h3>

The function is given as:

h=16t^2+80t+96.

When the object hits the ground, h = 0

So, we have:

16t^2+80t+96 = 0

Divide through by 16

t^2+5t+6 = 0

Expand

t^2 + 3t + 2t + 6 = 0

Factorize

t(t + 3) + 2(t + 3) = 0

Factor out t + 3

(t + 2)(t + 3) = 0

Solve for t

t = -2 or t = -3

The time (t) cannot be negative.

Hence, the object will never hit the ground

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