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soldier1979 [14.2K]
2 years ago
15

2. A hang glider dropped his cell phone from a height of 450 feet. How many seconds did it take the cell phone to reach the grou

nd?
3. An accident investigator measured the skid marks of one of the vehicles involved in an accident. The length of the skid marks was 84 feet. What was the speed of the vehicle before the brakes were applied?

4. How far from the base of the house do you need to place a 13-foot ladder so that it exactly reaches the top of a 10-foot tall wall?

5. A baseball diamond is a square that is 90 feet on each side. What is the distance a catcher has to throw the ball from home to second base?
Mathematics
1 answer:
Neko [114]2 years ago
7 0

Answer:

2. A hang glider dropped his cell phone from a height of 450 feet. How many seconds did it take the cell phone to reach the ground?225feet

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Brrunno [24]

Answer:

ok hold on ima do it step by step

7 0
2 years ago
The sport of korfball is played by teams of eight players. Each team has fourmen and four women on it. Halliday High School has
Alex Ar [27]

Answer:

There are 11550 possible selections

Step-by-step explanation:

Given

Men = 7

Women = 11

Required

How many ways can 4 men and 4 women be selected

The keyword in the question is SELECTION and it means COMBINATION;

So, number of selection is:

Number = Men * Women

Number = ^7C_4 * ^{11}C_4

This gives

Number = \frac{7!}{(7-4)!4!} * \frac{11!}{(11-4)!4!}

Number = \frac{7!}{3!4!} * \frac{11!}{7!4!}

Number = \frac{7 * 6 * 5 * 4!}{3!4!} * \frac{11 * 10 * 9 * 8 * 7!}{7!4!}

Number = \frac{7 * 6 * 5}{3!} * \frac{11 * 10 * 9 * 8}{4!}

Number = \frac{7 * 6 * 5}{3 * 2 * 1} * \frac{11 * 10 * 9 * 8}{4 * 3 * 2 * 1}

Number = \frac{7 * 6 * 5}{6} * \frac{11 * 10 * 9 * 8}{4 * 3 * 2 * 1}

Number = 7 * 5 * \frac{11 * 10 * 9 * 8}{4 * 3 * 2 * 1}

Number = 7 * 5 * \frac{7920}{24}

Number = 7 * 5 * 330

Number = 11550

Hence;

<em>There are 11550 possible selections</em>

6 0
2 years ago
the equation y equals 1/5x represents a proportional relationship. explain how you can tell the relationship is proportional fro
Allisa [31]
If the equation is in y = k*x form, then we have a direct proportional relationship between x and y. In this case, y = (1/5)*x is in the form y = k*x where k = 1/5. So this equation is proportional. The constant of proportionality is k = 1/5

In terms of a graph, you can tell if it has the following properties:
1) The graph goes through the origin (0,0) which is where the x and y axis cross
2) The graph is a straight line

You should find that graphing y = (1/5)x will satisfy both properties above, so that will visually confirm you have the right answer. The graph is shown in the attached image. The red line represents the graph of the equation. The red line goes through (0,0) and (5,1), which are point A and point B respectively.

8 0
2 years ago
water evaporates from a pond at a rate of 0.05 inches per hour hour what is the change in the water level of the pond after 24 h
gladu [14]
The change in the water level should decrease by 1.2 inches in 24 hours. 
4 0
2 years ago
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Noel Devine bought a new dishwasher for $320. He paid 20 down and made 10 monthly payments of $34 what actual yearly interest ra
Nookie1986 [14]
IN finding the interest we need to use the following formula:
 Interest= Principal x Rate x Time  or I= PRT
Substitute values: I= [$20 + ($10 x $34)] -320 =$40
P= $320
R=?
T=10 months/year
I=PRT
Since R is a missing term, we will solve for R using this formula: R=I/PT
R=  [<span>$20 + ($10 x $34)-320] / ($320 x 10 months)
                                          T=10 months</span>÷12 months=0.83<span>
R= ($40)/ $320 X 0.83
R= 40/ 265.6
R=15.06024096</span>
3 0
2 years ago
Read 2 more answers
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