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Lubov Fominskaja [6]
2 years ago
11

In a recent survey, 15 skydivers said that they have never had a skydiving accident. This was 60% of the total number of skydive

rs that were surveyed. What was the total number of skydivers surveyed?
Mathematics
1 answer:
aleksandrvk [35]2 years ago
5 0

Answer:

total sky divers is 25

Step-by-step explanation:

60% = 15 skydivers

divide by 6 both sides

10% = 2.5

times by 4 both sides

40%=10

_________

60%+40%=100%

15+10=25

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Y +3 = x<br> 3x + 4y = 16
iragen [17]

Step-by-step explanation:

y+3=x

or 0=x-y-3... ans

3x+4y=16

or, 3x+4y-16=0 answer.......

5 0
2 years ago
H=7+44t-16^2
zalisa [80]

Answer:

When t=2.1753 & t=.5746 , h=27

Don't worry, I got you. Also, my calculator does too.

We set h equal to 27, because we want the height to be 27 when we solve for t.

That leaves us with:

27 = 7 + 44t - 16t^2

Simplify like terms,

20 = 44t - 16t^2

Move 20 onto the right side, so we can use quadratic equation

44t - 16t^2 - 20 = 0 --> -16t^2 + 44t - 20

Using quadratic, you get

t=2.1753 & t=.5746

<u>poster confirmed : "It’s t=2.18 and t=0.57"</u>

3 0
2 years ago
Race relations: A New York Times/CBS poll surveyed 1,027 adults nationwide about race relations in the United States. Of the sam
Montano1993 [528]

Answer:

D. We are 95% confident that the proportion of all Americans who say that race relations in this country are generally bad is between 58% and 64%.

Step-by-step explanation:

The 95% confidence interval refers that 95% of data is correct with respect of the population

Given that 95% confidence interval is (0.58, 0.64)

So based on this, the option D is correct as it shows the right thing with regard to 95% confidence interval

Therefore all the other options are incorrect as the first option is of probability, the second option is the sample, and the third option is of statement form i.e not standardized.

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Csqrt%7B272%7D" id="TexFormula1" title="\sqrt{272}" alt="\sqrt{272}" align="absmiddle" class
lozanna [386]

√272 is a real number, and the simplified expression of √272 is 4√17

<h3>How to simplify the expression?</h3>

The expression is given as:

√272

Expand

√272 = √16 * 17

Take the square root of 16

√272 = 4√17

Hence, the simplified expression of √272 is 4√17

Read more about real numbers at:

brainly.com/question/7784687

#SPJ1

7 0
1 year ago
PLEASE HELP ME WITH THIS PROBLEM, SYSTEM OF LINEAR EQUATIONS, 30 POINTS!!!!
Alex Ar [27]

Answer:

You can either use substation or you can use elimination on both of the problems

Step-by-step explanation:

5 0
3 years ago
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