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mafiozo [28]
2 years ago
11

Math help please i will mark you brainliest

Mathematics
1 answer:
Finger [1]2 years ago
4 0

The line of best fit is a line that follows the direction of the dots. It doesn't have to be perfect, it's just a general line to represent the data. Sometimes there isn't a line of best fit (if there is no correlation). It normally touches most of the dots.

The slope is about 1/2 and the point where the line touches the y axis is at 40 so that means an equation could be y = 1/2x + 40

When the advertising expenditure (x value) is 18,000, substitute it into the equation above.  y = 1/2(18,000) + 40 which equals y = 9,040 . This is the expected revenue.

Hope this helps!

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A loan of £1000 has a compound interest rate of 2.7% charged monthly. Express the original loan as a percentage of the total amo
const2013 [10]

Answer:

£1054.729

Step-by-step explanation:

To find compound interest you need to use the equation 1000(1.027)^x.

To find the interest rate (1.027):

100 + 2.7 = 102.7

102.7 / 100 = 1.027

The value of x is the amount of months if no payment is made in this situation, so 2 would be the x value for this problem.

Hope this helps!  

8 0
2 years ago
A rectangular prism has a volume of 192 cubic feet. The length of the prism is 8 ft and the width is 4 ft. What is the height of
zubka84 [21]
6 feet.

V = w h l
h= v / l w = 192 / 8.4 = 6ftv / l w  \frac{x}{y}

7 0
3 years ago
10x+20=7x-8<br><br> Solve for x.
Kazeer [188]

Step-by-step explanation:

Isolate the variable

10x - 7x = -20 - 8

3x = -28

x = -9.333333333333

5 0
2 years ago
1. Use the quadratic, x? + 18x = 25 to answer the following questions.
makvit [3.9K]

Answer:

FIRST PROBLEM:

Exact Form:

x  =  25 /19

Decimal Form:

x =  1.31578947

Mixed Number Form:

x  =  1  6 /19

SECOND PROBLEM

Exact Form:

x  =  − 9  +  √ 106 ,  − 9  − √ 106

Decimal Form: x  =  1.29563014 ,  − 19.29563014

Step-by-step explanation:

5 0
3 years ago
Over three days I earn 2568. On the first day I made twice as much as the second day. On the third day I made three times as muc
Fudgin [204]

Answer:

<em>I earned $856 on the first day</em>

Step-by-step explanation:

Let's call

x = earning on the second day

2x = earnings on the first day

3x = earnings on the third day

The total earnings are $2568, thus

x + 2x + 3x = 2568

Simplifying:

6x = 2568

Dividing by 6:

x = 2568/6

x = 428

I earned $428 on the second day.

2x = 2*$428 = $856

I earned $856 on the first day

8 0
2 years ago
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