3 years ago

Find the volume (don't forget your UNITS) *

Mathematics

2 answers:

Roman55 [17]3 years ago

8 0

Answer:

70 cubic in

Step-by-step explanation:

2x7x5

Evgesh-ka [11]3 years ago

5 0

The vloume is 5*7*2=70 inch

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Verdich [7]

Answer:

Let $\vec{A}=3\hat{i}-\hat{j}$ and $\vec{B}=-\hat{i}-2\hat{j}$ .

$\vec{A}+\vec{B}=(3\hat{i}-\hat{j})+(-\hat{i}-2\hat{j})=2\hat{i}-3\hat{j}$

$\vec{A}-\vec{B}=(3\hat{i}-\hat{j})-(-\hat{i}-2\hat{j})=4\hat{i}+\hat{j}$

c) Now we calculate the direction of $\vec{A}+\vec{B}$ and $\vec{A}-\vec{B}$

We calculate the direction of $\vec{A}+\vec{B}$ like this:

$\theta=tan^{-1}(\frac{-3}{2})=-56,3^{\circ}$ . Since, $270\leq\theta\leq360$ , then the direction of $\vec{A}+\vec{B}$ is $360^{\circ}-\theta=360^{\circ}-56.3^{\circ}=303.7^{\circ}$ .

Now, for $\vec{A}-\vec{B}$

$\theta=tan^{-1}(\frac{1}{4})=14^{\circ}$ .

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3 years ago

a triangular pyramid has a volume of 840 cubic inches the triangular base has a base length of 20 inches and a height of 21 inch

luda_lava [24]

The answer is 2. You can find it by multiplying 20 and 21 giving you 420 and since 420 is half of 840 then all you would have to do is multiply 420 by 2 meaning the height is 2 since if you multiplied all in one it would be 20 x 21 x 2=840

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3 years ago

A baseball player has 546 plate appearances in his first year, 627 plate appearances in his second year, and 712 plate appearanc

xxTIMURxx [149]

Answer:

1885 plate appearances

Step-by-step explanation:

546 plate appearances + 627 plate appearances + 712 plate appearances = 1885 plate appearances

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3 years ago

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Kryger [21]

(-5,0) is inside the circle

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3 years ago

In one month, Claudia rides her favorite bike trail 12 times. She travels a distance of 1,182 km. What is the length of Claudia'

levacccp [35]

Hello! I am happy to help you.

What you do for this problem is you take the total distance and divide by the times traveled.

1182 / 12 = 98.5.
The trail is 98.5 km long.

Hope this helps.

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4 years ago

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