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Lyrx [107]
3 years ago
8

-3 + 7

Mathematics
1 answer:
grin007 [14]3 years ago
6 0

-3+7=4

-8+4=-4

-16+4=-12

24-16=8

-14+6=-8

3+(-8)=-5

-31+(-45)=-76

-42-25=-67

-30+1=-29

-3-29=-32

72-50=22

15-2=13

-23-15=-38

2-1=1

-5-4=-9

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If 7x + 4 = -19 + 5x, then 2x – 14 equals<br>A-23<br>B 23<br>C-37<br>D-14​
drek231 [11]

Answer:

C

Step-by-step explanation:

Here we have the question,

7x+4 = -19 + 5x

Now we add 19 to both sides,

7x + 4 + 19 = -19 + 19 + 5x

7x + 23 = 5x

Now we subtract 7x from both sides,

23 = -2x

We divide -2 from both sides,

x = -23/2

Now we plug this in into 2x - 14,

2(-23/2) - 14 = -23-14 = -37

Our answer is C

7 0
3 years ago
Find the length of side x in simplest radical form with a rational denominator.
NeTakaya

Answer:

x = 2 \sqrt{5}

Step-by-step explanation:

\sin \: 30 \degree =  \frac{ \sqrt{5} }{x}  \\  \\  \frac{1}{2} =  \frac{ \sqrt{5} }{x}  \\  \\x = 2 \sqrt{5}

5 0
3 years ago
Find the area 11m 9m 15m 9.58m ( im not that smart lol)
Anettt [7]

Answer:

I believe it is 14226.3

Step-by-step explanation:

You didn't say what shape it is or which ones are length, width, etc. But to find area(in most cases) multiply all the dimensions together.

Hope this helps!

7 0
3 years ago
You're at a halloween fair with a big ferris wheel. the wheel has ten chairs and people are seated two per chair. every minute a
miskamm [114]
The number of people who took ride in the big ferris wheel at a fair can be calculated by proper dimensional analysis. This can be done through the equation below,

         n = (number of minutes)(rate at which the chair passes the exit platform)(number of persons per chair)

Substituting the known values to the equation,

       n = (30 minutes)(1 chair / minute)(2 persons / chair)
                 n = 60 persons

Answer: 60 persons
8 0
4 years ago
Read 2 more answers
According to a survey, 78% of residents in Summerville own a home. If 30 residents
rosijanka [135]

Answer:

0.1732 = 17.32% probability exactly 24 residents own a home.

Step-by-step explanation:

For each resident, there are only two possible outcomes. Either they own a home, or they do not. The probability of a resident owning a home is independent of any other resident. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

78% of residents in Summerville own a home.

This means that p = 0.78

30 residents are randomly selected:

This means that n = 30

Find the probability exactly 24 residents own a home.

This is P(X = 24).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 24) = C_{30,24}.(0.78)^{24}.(0.22)^{6} = 0.1732

0.1732 = 17.32% probability exactly 24 residents own a home.

3 0
3 years ago
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