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larisa [96]
3 years ago
11

Please help will give brainliest answer ​

Mathematics
2 answers:
yaroslaw [1]3 years ago
8 0
The following answer to this is 1. B
2.D
iragen [17]3 years ago
5 0

Answer:

Question 3

C. y-9 =1/2(x-1)

Question 4

D. y+5 =3(x+2)

Step-by-step explanation:

Question 3:

Equation of line in point slope form is given as:

y-y_1 =m(x-x_1)

Plug m = 1/2, x_1 = 1, \:y_1 = 9 in the above equation, we find:

y-9 =1/2(x-1)

This is the required equation of the line.

Question 4:

Equation of line in point slope form is given as:

y-y_1 =m(x-x_1)

Plug m = 3, x_1 = - 2, \:y_1 = - 5 in the above equation, we find:

y-(-5) =3[x-(-2)]

y+5 =3(x+2)

This is the required equation of the line.

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1. In the spring of 2017, the Consumer Reports National Research Center conducted a survey of 1007 adults to learn about their m
avanturin [10]

Answer:

The correct answer is "1668". A further solution is provided below.

Step-by-step explanation:

According to the question,

Estimated proportion,

\hat{p} = \frac{574}{1007}

  =0.57

Margin of error,

E = 0.02

Level of confidence,

= 90%

= 0.90

Critical value,

Z_{0.10}=1.65

Now,

⇒  0.02=1.65\times \sqrt{\frac{0.57\times 0.43}{n} }

 0.0004=2.7225\times \frac{0.2451}{n}

         n=\frac{2.7225\times 0.2451}{0.0004}

             =1668.21

or,

         n \simeq 1668

5 0
3 years ago
Rewrite the following without an exponent<br> (-7)⁻²
chubhunter [2.5K]

Answer:

The correct answer is 1/49

Step-by-step explanation:

In order to find this, we first can eliminate the negative in the exponent by putting the whole this in the denominator.

(-7)^-2 = 1/(-7)^2

Now we can evaluate the denominator

1/(-7)^2 = 1/49

7 0
4 years ago
tim earns $150/week plus $15.00 for each desk he assembles. Write an inequality to represent how many desks he needs assemble to
Gennadij [26K]

x = number of desks needed to make

equation:  150 +15.50x >= 400


solution:

150 +15.50x >=400

15.50x = 250

x = 250/15.50 = 16.129

he needs to assemble 17 desks

15.50*17 = 263.50 +150 = $413.50


3 0
3 years ago
The set of possible values of m is {5,7,9}. What is the set of possible values of k if 2k=m+3?
Paladinen [302]
Just plug in the values for m

so the possible values for k are
when m=5
2k=5+3 \\ k=4
when m=7
2k=7+3 \\ &#10;k=5
when m=9
2k=9+3 \\ k=6
so the possible values for k are {4,5,6}
4 0
3 years ago
HURRY UP IF YOU ANSWER THIS QUESTION CORRECT I WILL NAME YOU BRAINLY WHAT IS 129 SQUARED
NemiM [27]

Answer:

11.3

Step-by-step explanation:

6 0
3 years ago
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