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Shalnov [3]
3 years ago
11

Hellp me for a brainly

Mathematics
2 answers:
ololo11 [35]3 years ago
7 0

Answer:

<h2><u>78.5 mm² or answer D. </u></h2>

Step-by-step explanation:

The formula for the area of a circle is

A = π*r²

Now we can rewrite with the radius. *Note* I am using 3.14 for pi to make it easier*

A = π*5²

Solve

5² = 25

25 * 3.14 = 78.5

Now since the measurements were done in millimeters, we will add mm to the end.

Also since it is area, we need to add ²

<u>78.5 mm²</u>

Talja [164]3 years ago
5 0

Answer:

25π or 78.5mm²

Step-by-step explanation:

A=3.14*5^{2} \\ =3.14*25\\ =78.5

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A basket contains five apples and seven peaches. You randomly select one piece of fruit and eat it. Then you randomly select ano
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Answer:

Step-by-step explanation:

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No. Of apple n(A) = 5

No. Of peaches n(P) = 7

P(A) 1st = n(A)/T = 5/12

P(P) 2nd = n(p)/(T-1) = 7/11

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Estimate 49% of 162. Use mental math to calculate 49% of 162. ???
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Hilary walked 18 yards from her house to the library. Then she walked 288 feet to the post office. What is the total distance in
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Answer:

37 yards

Step-by-step explanation:

Given data

Distance from house to the library= 18 yards

Distance from  the library to the post office= 288 feet

Total distance in yards, first let us have all units to yards

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Hence the total distance in yards is

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4 0
3 years ago
2x+3y=-12<br> 2x+t=-16<br> X=. Y=<br> Help plz
8090 [49]

<u>To make this problem solvable, I have replaced the 't' in the second equation for a 'y'.</u>

Answer:

<em>x = -9</em>

<em>y = 2</em>

Step-by-step explanation:

<u>Solve the system:</u>

2x + 3y = -12       [1]

2x + y = -16       [2]

Subtracting [1] and [2]:

3y - y = -12 + 16

2y = 4

y = 4/2 = 2

From [1]:

2x + 3(2) = -12

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x = -18/2 = -9

Solution:

x = -9

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