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3 years ago

Help me please!! ABC or D

Mathematics

2 answers:

Goshia [24]3 years ago

6 0

Answer:

Step-by-step explanation:

3(21)+1=64

ICE Princess25 [194]3 years ago

5 0

Answer:

Step-by-step explanation:

Vertically opposit angles are equal.

3x + 1 = 64

3x = 64 - 1

3x = 63

x = 63/3

x = 21

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The volumes of two similar solids are 210 m3 and 1,680 m3. The surface area of the larger solid is 856 m2. What is the surface a

Ksju [112]

we know that

$scale \ factor^{3}=\frac {volume\ larger\ solid }{volume\ smaller\ solid}$

Find the value of the scale factor

$volume\ larger\ solid= 1,680\ m^{3} \\ volume\ smaller\ solid= 210\ m^{3}$

substitute the values in the formula

$scale \ factor^{3}=\frac {1,680 }{210}$

$scale \ factor^{3}=8$

$scale \ factor=\sqrt[3]{8} \\ scale \ factor= 2$

Find the surface area of the smaller solid

we know that

$scale \ factor^{2}=\frac {surface\ area\ larger\ solid }{surface\ area\ smaller\ solid}$

$surface\ area\ larger\ solid =856\ m^{2} \\ scale\ factor =2$

$surface\ area\ smaller\ solid= \frac{surface\ area\ larger\ solid}{scale \ factor^{2}}$

substitute the values

$surface\ area\ smaller\ solid= \frac{856}{2^{2}}$

$surface\ area\ smaller\ solid=214\ m^{2} }$

therefore

the answer is

The surface area of the smaller solid is equal to $214\ m^{2}$

3 0

3 years ago

Read 3 more answers

Suppose that a toy car moving at 7.20 m/s is going around a track that has a radius of 1.50 m. What acceleration will the car ex

wel

Answer:

$a=34.56\ m/s^2$

Step-by-step explanation:

Given that,

Speed of a toy car, v = 7.2 m/s

Radius of the circular track, v = 1.5 m

We need to find the acceleration of the car. When an object moves in a circular path, it will have centripetal acceleration. It can be given as follows :

$a=\dfrac{v^2}{r}\\\\a=\dfrac{(7.2)^2}{1.5}\\\\=34.56\ m/s^2$

So, the centripetal acceleration of the toy car is $34.56\ m/s^2$ . Hence, the correct option is (c).

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3 years ago

If I make 3 points every 1 second, how many long will it take me to get 114,000 points?

MArishka [77]

Answer:

38,000 seconds

Step-by-step explanation:

Divide 114,000 (total points) by 3 (points per second).

The result is 38,000.

I hope this helped, and please mark this as brainliest!

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4 years ago

Help me please!!!!!!!!!!!!!

Virty [35]

Hiiiiiii

The answer is 1 1/9

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3 years ago

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What line has slope of 5/8 and goes through the point (2,-3)

sweet-ann [11.9K]

Slope of a line passing through a point is given by: y - y1 = m(x - x1); where (x1, y1) = (2, -3) and m = 5/8.
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5x - 8y = 34

7 0

4 years ago