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poizon [28]
3 years ago
14

The Chang family is on

Mathematics
1 answer:
xeze [42]3 years ago
4 0
I think is d correct answer 60%
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Nancy is 5 years younger than her brother Stan. Last year she was twice as young as he was. How old is each of them now?
otez555 [7]
Nancy: 5 Stan: 10

5 is 5 years
younger then Stan
And 5 is twice as
young as 10
4 0
3 years ago
Read 2 more answers
Help due at 4:00 I NEED HELP I HATE MATH(k12) LOOK AT PIC
vovikov84 [41]

Answer:

Step-by-step explanation:

3 0
2 years ago
A cone with radius 2 and height 9 has its radius tripled. How many times greater is the volume of the larger cone than the small
SpyIntel [72]

Answer:

When increasing the radius 3 times the volume increases 9 times and when it is reduced to a third the volume decreases 9 times

Step-by-step explanation:

We have that the formula for the volume of a cone is:

Vc = pi * (r ^ 2) * h

We first calculate the original volume, where the radius is 2 and the height is 9, replacing:

Vc = 3.14 * (2 ^ 2) * 9

Vc = 113.04

Now if the radius is tripled it would be: 2 * 3 = 6, the radius would be 6, replacing:

Vc = 3.14 * (6 ^ 2) * 9

Vc = 1017.36

If we compare:

1017.36 / 113.04 = 9

This means that when the radius is tripled, the volume increases 9 times.

When if re reduces to a third the radius would be: 2/3, replacing:

Vc = 3.14 * ((2/3) ^ 2) * 9

Vc = 12.56

113.04 / 12.56 = 9

Which means that by reducing it to a third the volume becomes 9 times smaller.

6 0
3 years ago
The temperature at 5 a.m. was −7.4°C. By 9 a.m., the temperature was −4.7°C. How much warmer was the temperature at 9 a.m.?
Nana76 [90]

Answer:

(

Step-by-step explanation:

(-7°C)-(-4°C)

-7°C + 4°C

-3°C

3 0
2 years ago
A triangle has side lengths of 12 millimeters, 17 millimeters, and 13 millimeters. Is this triangle equilateral?
nordsb [41]
No, this triangle is not equilateral. This triangle is scalene. All three sides are of different lengths, which is why it's scalene. In order to have an equilateral triangle, all three sides need to be the same length. 
7 0
3 years ago
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