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zmey [24]
3 years ago
14

Which is a simplified form of the expression 3a + 7 – a – 7?

Mathematics
2 answers:
zheka24 [161]3 years ago
7 0

Answer:

A) 2a

Step-by-step explanation:

3a+7-a-7

3a-a+7-7

2a+7-7

2a

lord [1]3 years ago
3 0

Answer:

Choice A.

Step-by-step explanation:

3a + 7 - a - 7 = 3a+7 - a+7 = 3a-a = 2a

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Find the area of the composite figure in terms of the figure (use 3.14 for pi)​
svp [43]

Answer:

105.12 ft²

Step-by-step explanation:

Let's first find the area of the rectangle.

10\cdot8=80 ft², so the rectangle has an area of 80ft².

To find the area of the semi-circle, we find the area of a whole circle and divide by two.

The formula to find the area of a circle is \pi r^2. The radius is 4, as the diameter is 8.

3.14\cdot4^2

3.14\cdot16

50.24\div2=25.12

Add 80 and 25.12:

80+25.12=105.12

Hope this helped!

5 0
3 years ago
What is the simplified form of 24r - 3(2r - 5t) - 4t?
Drupady [299]
<span>24r - 3(2r - 5t) - 4t
= 24r - 6r + 15t - 4t
= 18r + 11t

answer
</span><span>18r + 11t</span>
6 0
3 years ago
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Don’t know the answer to this?
Vaselesa [24]

Answer:

Step-by-step explanation:

The first one.

3 0
3 years ago
A number is multiplied by 5. If 12 is added to the product you get 37.
Korolek [52]


5x+12=37

5x=25

x=5

I hope this helps


5 0
3 years ago
Solve.<br><br> Round to the nearest hundredth.<br><br> 29.3 = 1.7y
Elena-2011 [213]

Steps to Solve:

29.3 = 1.7y

29.3/1.7 = 1.7y/1.7

y = 17.2352941176

In this case, we round up the hundredths place because the number in the thousandths place is 5 or higher.

y = 17.24

Hope this helps!! :)

7 0
3 years ago
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