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Ksenya-84 [330]
3 years ago
12

PLEEEEAAAAAAAASE HELP ME... CLASS IS TODAY AND I STILL HAVE ALL OF MY HW TO DO... I HAVE NO IDEA, PLEASE BE QUICK THANK SO MUCH!

Mathematics
1 answer:
maxonik [38]3 years ago
8 0

Answer:

abc

Step-by-step explanation:

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What is the midpoint of the line segment (-8,-7) and (-7,-8)
goblinko [34]
The answer is (-7.5, -7.5)
3 0
3 years ago
If a equals 4b - 15 what is b
nlexa [21]

Answer:

b = a + 3.75

Step-by-step explanation:

a = 4b - 15

You are solving for b. Isolate the b. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, add 15 to both sides

a (+15) = 4b - 15 (+15)

a + 15 = 4b

Next, divide 4 from both sides. Remember to divide from all terms.

(4a + 15)/4 = (4b)/4

b = (4a)/4 + (15)/4

b = a + 15/4

b = a + 3.75 is your answer

~

7 0
3 years ago
The following data are the distances between 20 retail stores and a large distribution center. The distances are in miles.
Free_Kalibri [48]

Answer:

1191.4 ; 34.5

Step-by-step explanation:

Given the data:

29; 37; 38; 40; 58; 67; 68; 69; 76; 86; 87; 95; 96; 96; 99; 106; 112; 127; 145; 150

The sample variance and standard deviation can be obtained thus :

Σ(X - m)² / (n - 1)

Where, m = mean of the sample

n = sample size

The standard deviation equals, sqrt(variance )

Using a calculator:

The variance, σ² ;

Mean = Σx / n = 1681 / 20 = 84.05

(x -m)^2

[(29-84.05)^2 + (37-84.05)^2 + (38-84.05)^2 + (40-84.05)^2 + (58-84.05)^2 + (67-84.05)^2 + (68-84.05)^2 + (69-84.05)^2 + (76-84.05)^2 + (86-84.05)^2 + (87-84.05)^2 + (95-84.05)^2 + (96-84.05)^2 + (96-84.05)^2 + (99-84.05)^2 + (106-84.05)^2 + (112-84.05)^2 + (127-84.05)^2 + (145-84.05)^2 + (150-84.05)^2] / 19

22636.95 / 19

= 1191.4184 = 1191.42

Standard deviation = sqrt( Variance)

Standard deviation = sqrt(1191.4184)

Standard deviation = 34.516929 = 34.52

4 0
3 years ago
What is a slope that runs through (1,1) and (1,8)
tatiyna

Answer:

0, undefined

Step-by-step explanation:

Slope=∆y/∆x

= 8-1 / 1-1

=7/0

= undefined

5 0
3 years ago
Read 2 more answers
Please help me and my daughter.
garri49 [273]

Answer:

you can either factorise or use tge formula method

3 0
3 years ago
Read 2 more answers
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