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2 years ago

Jessica makes $9.00 an hour babysitting her sister. If Jessica made $38.25 how many hours did she babysit?

Mathematics

1 answer:

lozanna [386]2 years ago

4 0

Answer

4.25

Step-by-step explanation:

She would have baby sat for 4 hours and 15 minutes.

the 15 minutes comes in when we have the .25 because 1/4 of an hour is 15 minutes.

we can check this if we do 38.25 divided by 4.25 and we get 9.

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A cell phone company has a basic monthly plan of $40 plus $0.45 for any minutes used over 700.Before receiving his statement,Joh

Dimas [21]

0.45M+40

The M stands for the amount of minutes he went over.

8 0

2 years ago

Read 2 more answers

Convert 5280 vodas to pivos. Show three significant figures for your answer.

Finger [1]

(5280 vodas) * (1/2.71828 moloko/voda) * (1/3.1416 pivo/moloko) ≈ 618 pivos

(because 5280 has 3 significant digits)

8 0

2 years ago

On the 1st January 2014 Carol invested some money in a bank account.

Ghella [55]

Answer:

$\large \boxed{\text{\pounds 23 360.00}}$

Step-by-step explanation:

The formula for the accrued amount from compound interest is

$A = P \left(1 + \dfrac{r}{n}\right)^{nt}$

1. Amount in account on 1 Jan 2015

(a) Data:

a = £23 517.60

r = 2.5 %

n = 1

t = 1 yr

(b) Calculations:

r = 0.025

$\begin{array}{rcl}23517.60 & = & P\left (1 + \dfrac{r}{n}\right)^{nt}\\\\& = & P\left (1 + \dfrac{0.025}{1}\right)^{1\times1}\\\\& = & P (1 + 0.025)\\ & = & 1.025 P\\P & = & \dfrac{23517.60 }{1.025} \\\\& = & 22 944.00 \\\end{array}$

The amount that gathered interest was £22 944.00 but, before the interest started accruing, Carol had withdrawn £1000 from the account.

She must have had £23 944 in her account on 1 Jan 2015.

(2) Amount originally invested

(a) Data

A = £23 944.00

$\begin{array}{rcl}23 944.00 & = & 1.025 P\\P & = & \dfrac{23 944.00 }{1.025} \\\\& = & \mathbf{23 360.00} \\\end{array}\\\text{Carol originally invested $\large \boxed{\textbf{\pounds23 360.00}}$ in her account.}$

3. Summary

1 Jan 2014 P = £23 360.00

1 Jan 2015 A = 23 944.00

Withdrawal = <u> -1 000.00 </u>

P = 22 944.00

1 Jan 2016 A = £23 517.60

5 0

2 years ago

Factor 4x^2 - 25 show your work Help Plz!

r-ruslan [8.4K]

<span>4x^2 - 25
= (2x)^2 - 5^2 .................using a^2 - b^2 = (a+b)(a-b)
= (2x + 5)(2x - 5)</span>

4 0

2 years ago

A merchant buys a television for $125 and sells it for $75 more.What is the percent of markup?

cestrela7 [59]

Since he sold it for $75 more,

% Mark Up = Mark Up/ Cost Price x 100%

% Mark Up = 75 / 125 x 100% = 0.6 x 100% = 60%

Percent Mark Up = 60%
Hope this helps :)

3 0

2 years ago