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zepelin [54]
3 years ago
15

A mailbox that is 4 feet tall cast a shadow that is 12 feet long. A street lamp across the street is 10 feet tall. Use indirect

measurements to find the length of the street lamp's shadow.
Mathematics
2 answers:
Rus_ich [418]3 years ago
6 0
Draw it out first, so start out by drawing the mailbox (or just a line, it's math, not art) and then draw the 12 foot shadow. Okay, so now you know the other lamp is 10 feet tall.

The goal here is to find out the shadow of the 10 foot tall pole. So this would be x.

Making a proportion would help the most on this problem so you would say the following:

4 / 12 = 10/x, solve for x
Free_Kalibri [48]3 years ago
3 0
Proportion: 4/12=x/10
Answer: x=3 1/3
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Can someone help me? Ive chosen the last cube.
Setler79 [48]
There are 6 cubes in the last figure.  Just count them
The volume of each cube individually is 1 so 6 * 1 = 6 units cubed

4 0
3 years ago
It is reported in USA Today that the average flight cost nationwide is $445.99. You have never paid close to that amount and you
nlexa [21]

Answer:

H_0 : \mu \leq 445.99

H_a : \mu > 445.99

Step-by-step explanation:

It is given the average cost of the flight nationwide is $ 445.99

I wanted to \text{perform the hypothesis test} to determine that the true average is greater than $ 445.99

Let the hypothesis that the true average is actually greater than $445.99

Therefore,

the \text{null hypothesis} for the test is :

H_0 : \mu \leq 445.99

And the alternate hypothesis is :

H_a : \mu > 445.99

5 0
3 years ago
the bottom of the swimming pool has an area of 48 meters. If the pool is 2 meters deep, what is the volume of the pool
KiRa [710]
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V=48*2
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3 0
3 years ago
I NEED MEGA HELP WITH THIS QUESTION
katrin2010 [14]

Answer:

C. y =  -  \frac{1}{4} x - 2

Step-by-step explanation:

To find slope using coordinates, use the formula above.

(4, - 3) \: (0, - 2)→ \frac{ - 2 - ( - 3)}{0 - 4}→ \frac{ - 2 + 3}{ - 4} → -  \frac{1}{4}

Now, using the y = mx + b formula, plug in -  \frac{1}{4} as m (slope) and either coordinate as the x and y values. It looks like this:

- 3 =   - \frac{1}{4}(4)  + b

To solve for b, continue to use PEMDAS.

- 3 =   - \frac{1}{4}(4)  + b→ - 3 =  - 1 + b→ - 2 = b

Now use m and b to solve for your equation:

y =  -  \frac{1}{4} x - 2

The answer is C.

4 0
3 years ago
Suppose y varies inversely with x. Write an equation if y=7 when x=-4
luda_lava [24]

Answer:

y = -28 ÷ x

Step-by-step explanation:

The standard format of a inversely proportional equation goes by the format of y = k ÷ x. The question asks us to write an equation if y = 7 when x = -4 and y varies inversely with x.

So we substitute the values y = 7 and x = -4 in the equation y = k ÷ x

K = constant, we have to work this out

7 = k ÷ -4

7 × - 4 = k

k = - 4 × 7

k = -28

k = -28 So then we put this back into the original y = k ÷ x to find our final equation which is y = -28 ÷ x

3 0
3 years ago
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