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3 years ago

A squirrel ran 9 miles in 1 hour. Which expression can be used to determine its speed in miles per hour?

Mathematics

2 answers:

a_sh-v [17]3 years ago

8 0

Answer:

9 mile/ 1 hour

Step-by-step explanation:

Because the squirrel ran 9 miles in 1 hour, so u have to divide 9 miles by 1 hour.

vova2212 [387]3 years ago

7 0

Answer:

Step-by-step explanation:

hope it helps(;

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a line passes through the point -2 and five and has a slope of 2/3 points A(x,3) and B(-2,y)lie on the line

olasank [31]

A and B lie on the line, yes, but what specifically are you supposed to do? Looks like your problem statement was cut off before you'd finished typing it in.

You say your line passes thru (-2,5) and has a slope of 2/3? Then, using the point-slope formula,

y-5 = (2/3)(x+2) This is the general equation for your line.

Now let's play around with B(-2,y). Suppose we subst. the x-coordinate of B, which is -2, into the equation y-5 = (2/3)(x+2); we get y-5 = (2/3)(-2+2) = 0. This tells us that y must be 5. But we already knew that!!

So, please review the original problems with its instructions and this discussion and tell me what you need to know from this point on.

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2 years ago

A test is worth 100 points. The test is made up of 40 items. Each item is worth either 2 points or 3 points. Which matrix equati

lidiya [134]

Answer:

Total number of points in the test = 100

Total number of items in the test = 40

Let number of items of 2 points be x and number of items of 3 points be y.

Now, using the given information the situation can be represented by using the following equations :

⇒ x + y = 40 .........(1)

⇒ 2x + 3y = 100 .........(2)

The matrix equation is :

$\begin{bmatrix}1 & 1\\ 2& 3\end{bmatrix}\cdot \begin{bmatrix}x\\ y\end{bmatrix}=\begin{bmatrix}40\\ 100\end{bmatrix}$

By solving the equation (1) and equation (2), we get :

Solution : x = 20 and y = 20

4 0

3 years ago

Read 2 more answers

A seat on a Ferris wheel is level with the center of the wheel.The diameter of the wheel is 200 feet. Suppose the wheel rotated

Zanzabum

Answer: 86.6ft closer to the ground.

Step-by-step explanation:

The diameter of the wheel is 200ft

Then the radius, half of the diameter, is: r = 200ft/2 = 100ft.

Initially, the seat is at the same level that the center of the wheel.

And the distance between the center of the wheel and the bottom is the radius.

Then the initial position is at an angle of 0° from the x-axis. (where the (0,0) of this axis coincides with the center of the wheel=

Now, the wheel rotates 60°. (downwards, so we actually could use -60° measuring from the positive x-axis)

And thinking in this as a triangle rectangle, where the opposite angle is 60°, we can calculate the displacement in the vertical direction as:

y = sin(-60°)*R

y = sin(-60°)*100ft = -86.6ft

So the seat is 86.6ft closer to the ground.

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2 years ago

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Which is a correct name for the angle shownv?

nirvana33 [79]

Angle CBA is the right name because it's in between C and A

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3 years ago

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sweet [91]

Answer:

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2 years ago