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Sonbull [250]
3 years ago
13

Find the value of A when pi= 3.142 and r= 5

Mathematics
1 answer:
guapka [62]3 years ago
7 0

Answer:

7.855

Step-by-step explanation:

A=pi*r^2=3.142*5^2=3.142*25=7.855

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After spending $30 on a dress, Mary had 3/8 of her money left. How much money did she have at first?
BaLLatris [955]
The answer is that she had 48.  Set it up as an equation with x as the amount of money she started with.  x - 30 = 3/8x.  That says, in words, "the amount of money she started with minus 30 for the dress left her with 3/8 of the money she started with.  Solve for x by adding 30 to both sides and subtracting 3/8 from 8/8x (8/8 = 1).  8/8 - 3/8 = 5/8, so 5/8x = 30, multiply both sides by 8 to get 5x=240 and x = 48.
3 0
3 years ago
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Al bought 24 stickers. He gave away 11 stickers. Then he bought 8 more stickers.
Yakvenalex [24]
24-11+8

He BOUGHT 24 stickers, so you'd write 24. Then because he GAVE AWAY 11 stickers, you would subtract 11 from 24, which is 24-11. Then because Al BOUGHT 8 stickers you'd add the 8 to the 24-11 to get 24-11+8.


(Bought means to add and Gave away is subtracting)
5 0
3 years ago
Please help me with this question
romanna [79]

Answer:

E.

Step-by-step explanation:

so first you would add 8 to both sides to get

3w = t + 8

then divide both sides by 3

w = (t + 8) / 3

So the answer is E.

3 0
3 years ago
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Lavinia is standing at point A(4,8, 2). This is the starting point of a mountain hike. The end of the hike is at point B(6, 12,
kati45 [8]

Answer:

Question 1: b) Find the total distance from A to B

Distance formula:

d=Square root of (x2-x1)^2+(y2-y1)^2+(z2-z1)^2

d=Square root of (6-4)^2+(12-8)^2+(10-2)^2

d= 9.165 = 9.17 units

7 0
2 years ago
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A histogram titled Henry's Restaurant has calories on the y-axis and meals on the x-axis. 2 meals were 300 to 350 calories, 0 me
julsineya [31]

Answer:

the first one is: 351-400

the second one is: 651-700

Step-by-step explanation:

Hope it helped

7 0
3 years ago
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