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3 years ago

An equation was used to predict possible sales of phones for 6 months. The actual sales of phones are also listed.

Mathematics

2 answers:

Grace [21]3 years ago

5 0

Answer with Step-by-step explanation:

Residual is calculated by the difference between actual value and the predicted value.

Actual sales Predicted sales Residual

55 40 15

150 150 0

325 300 25

510 500 10

780 800 -20

990 1000 -10

Sum of residuals=15+0+25+10-20-10

=20

Hence, sum of residuals is:

LekaFEV [45]3 years ago

3 0

They were up 15+0+25+10-20-10=20. The sum was 20 :)

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There were 375 students who said they rode the bus. This number represents 60% of the school enrollment. How many student are en

SVETLANKA909090 [29]

You would do 375 divided by 60% and get 6.25 if need to round to nearest whole it would be 6

5 0

2 years ago

Read 2 more answers

(6+3)-+8-7)= (1+4)+(10-8)= (3-3+(9+1)= (10-2)+(10-8)= 2+(0+1+2+3)= (10-1-2-3)+4=

JulijaS [17]

Answer:

6+3-8-7 = 8

1+4+10-8 = 7

3-3+9+1 = 10

10-2+10-8 = 10

2+0+1+2+3 = 8

10-1-2-3+4 = 8

Step-by-step explanation:

i don't know if these are supposed to be easy or not lol but thanks for the points :p

6 0

2 years ago

PLEASE HELP! urgent! Write the equation of a line in a slope-intercept form and standard form

m_a_m_a [10]

Answer:

$y = \frac{3}{4}x -3$ --- Slope intercept

$4y - 3x =- 12$ --- Standard form

Step-by-step explanation:

Given

The attached linear graph

Required

The equation

Select any two points on the line

$(x_1,y_1) = (0,-3)$

$(x_2,y_2) = (4,0)$

Next, calculate the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

So, we have:

$m = \frac{0 --3}{4 - 0}$

$m = \frac{3}{4}$

The slope intercept is then calculated using:

$y = m(x - x_1) + y_1$

So, we have:

$y = \frac{3}{4}(x - 0) -3$

$y = \frac{3}{4}(x) -3$

$y = \frac{3}{4}x -3$

Multiply through bu 4

$4y = 3x - 12$

Subtract 3x from both sides

$4y - 3x =- 12$ --- Standard form

7 0

3 years ago

What is 10% of 100 PLEASE HELP

Jobisdone [24]

First off, we have to divide 100 by 10 to get 10%. That would be ten. So in conclusion, 10% of 100 is 10

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3 years ago

Read 2 more answers

How do you calculate time by speed and distance?

professor190 [17]

Answer:

t=d/s

Step-by-step explanation:

search up distance speed time triangle (like the one attached) and memorize it. When u need to use it just draw it on a piece of paper and cover ur intended target. For example, if u want to find the time formula, cover the time section and you got the time formula, D/S. It helps for beginners.

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2 years ago