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3 years ago

I need all the answers

Mathematics

2 answers:

tresset_1 [31]3 years ago

7 0

1) 7,400
2) 800
3) 600
4) 3,000
5) 1,900
6) 500
7) 400
8) 6,300
9) 9,000
10) 300
11) 200
12 8,100
13) 1,000

Ksju [112]3 years ago

5 0

1.7,400
2.800
3.600
4.3,000
5.1,900
6.500
7.400
8.6,300
9.9,000
10.300
11.200
12. 8,100
13.1,000
14.700

Hope this helps :)

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What minus 136 equals 656?

ratelena [41]

Answer:

792

Step-by-step explanation:

x - 136 = 656

+136 = +136

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A point is located in Quadrant IV. What do you know about the signs of the coordinates for the points?

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4 years ago

Given GHI G (4,-3), H (-4,2), and I (2,4), find the perpendicular bisector of HI in standard form.

Olin [163]

Answer:

$3x+y=0$

Step-by-step explanation:

step 1

Find the slope of segment HI

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

H (-4,2), and I (2,4)

substitute the given points

$m=\frac{4-2}{2+4}$

$m=\frac{2}{6}$

simplify

$m=\frac{1}{3}$

step 2

Find the slope of the perpendicular line to segment HI

we know that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

$m_1*m_2=-1$

we have

$m_1=\frac{1}{3}$

$m_2=-3$

step 3

Find the midpoint segment HI

we know that

The formula to calculate the midpoint between two points is equal to

$M(\frac{x1+x2}{2},\frac{y1+y2}{2})$

we have

H (-4,2), and I (2,4)

substitute

$M(\frac{-4+2}{2},\frac{2+4}{2})$

$M(-1,3)$

step 4

we know that

The perpendicular bisector of HI is a line perpendicular to HI that passes though the midpoint of HI

Find the equation of the perpendicular bisector of HI in point slope form

$y-y1=m(x-x1)$

we have

$m=-3$

$M(-1,3)$

substitute

$y-3=-3(x+1)$

step 5

Convert to slope intercept form

$y=mx+b$

Isolate the variable y

$y-3=-3x-3$

$y=-3x-3+3$

$y=-3x$

step 6

Convert to standard form

$Ax+By=C$

where

A is a positive integer

B and C are integers

$y=-3x$

Adds 3x both sides

$3x+y=0$

see the attached figure to better understand the problem

3 0

4 years ago

Brent checks the sales records for a random sample of 16 days and finds the mean number of gallons sold is 150 gallons per day;

Basile [38]

Answer:

[143.61, 156.39]

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Because the population standard deviation is not available AND the sample size is less than 31, we can use a t procedure here.

Plug these values into your calculator:

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Sample size = 16

Standard deviation = 12

Confidence level = 95% = 0.95

and get [143.61, 156.39] as your confidence interval

8 0

2 years ago

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tatiyna

Answer: 4

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