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MatroZZZ [7]
2 years ago
7

Help me I got 25 missing assignments

Mathematics
1 answer:
leva [86]2 years ago
6 0

Answer:

think it's the last one

Step-by-step explanation:

sorry if i'm wrong

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PLEASE HELPPPPPPPP....?.......
Kobotan [32]

Answer:

a = 9

b = 6

I hope you can do the rest yoyrself, as I coulsnt find how to type it out ;-;

4 0
2 years ago
Read 2 more answers
There are five families that each have one child. Each of them hires Riley as a babysitter. Because the children she babysits ar
GREYUIT [131]

Answer:

Average Rate of Pay = $ 5.23 /hr

Step-by-step explanation:

We have a data in form of Hours of Baby Sitting and Amount of Pay. Since the Amount of pay depends upon the Hours of Baby Sitting. Thus, we take y = Amount of Pay, while x = Hours of Baby Sitting. So, the data becomes:

x (Hours) =   12      13      16      17       20

y ($)         =  54     56     65     64     100  

The statistical data calculated is:

∑x = 78,   ∑x² = 1258,   ∑y = 339,  ∑xy = 5504,   n = no. of data points = 5

Now, we use linear regression model to fit a straight line to this data.

y = a + bx   --------- eqn (1)

where,

b = [ n∑xy - ∑x.∑y]/[n∑x² -(∑x)²]

b = [ (5)(5504) - (78)(339)]/[(5)(1258) - (78)²]

b = 5.23

and,

a = (∑xy - b∑x²)/∑x

a = [5504 - (5.23)(1258)]/78

a = -13.83

Therefore, eqn (1) becomes:

<u>y = -13.83 + 5.23x</u>

The graph plot of this straight line fit is provided in the attachments.

Now, we derivate the equation with respect to x, to get the average rate of pay:

Average Rate of Pay = dy/dx = d/dx(-13.83 + 5.23x)

<u>Average Rate of Pay = $ 5.23 /hr</u>

8 0
3 years ago
Sketch plane M intersecting plane N. Then sketch plane 0 so that it instersects plane N, but not plane M.
BaLLatris [955]
It can be a transversal kind of intersecting.....

7 0
3 years ago
27. The interest rate that doubles a sum in 10 years is<br>a) 12%<br>b) 11%<br>c) 10%<br>d) 9%​
avanturin [10]

Answer:

Interest rate of 7%.

Step-by-step explanation:

The compound interest formula is given by:

A(t) = P(1 + \frac{r}{n})^{nt}

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

In this question:

We want to find t for which A(t) = 2P when n = 1, t = 10. So

A(t) = P(1 + \frac{r}{n})^{nt}

2P = P(1 + r)^{10}

(1 + r)^10 = 2

\sqrt[10]{(1 + r)^10} = \sqrt[10]{2}

1 + r = 1.07

r = 0.07

So a interest rate of 7%.

5 0
2 years ago
Y = -7x +3<br> {*<br> y = -x -3
qwelly [4]
(1, -4)

thats the answer
3 0
2 years ago
Read 2 more answers
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