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2 years ago

12

Keisha wants to buy a stereo. Her mother said if Keisha saved 75% of the cost of the stereo, she would pay the other 25% and the

taxes. If the cost of the stereo is $150.00, how much money does Keisha need to save?
Keisha needs to save $________???

HURRY PLS

1 answer:

TEA [102]2 years ago

8 0

Answer:

$112.50

Step-by-step explanation:

25% is $37.50

37.50x3=112.50

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1) Find x, if 1/3 of x is 14

BartSMP [9]

"of" means multiply and "is" means equal

1. $\frac{1}{3}$ x = 14

x = 14(3) <em>multiply both sides by 3 to isolate "x"</em>

x = 42

2. $\frac{1}{5}$ x = 14

x = 14(5) <em>multiply both sides by 5 to isolate "x"</em>

x = 70

3. $\frac{2}{5}$ x = 14

2x = 14(5) <em>multiply both sides by 5 </em>

2x = 70

x = 35 <em>divide both sides by 2 to isolate "x"</em>

4. $\frac{7}{8}$ x = 14

7x = 14(8) <em>multiply both sides by 8 </em>

7x = 112

x = 16 <em>divide both sides by 7 to isolate "x"</em>

Answers: 42, 70, 35, 16

5 0

2 years ago

Peter is trying to buy fencing for the perimeter of his garden. His garden is in the shape of a rectangle with a length of 2(x+6

RideAnS [48]

Given dimensions of a rectangular garden are:

length = 2(x+6) feet

width = 3.5x feet

using the distributive property on length we get, length = 2x+12

Perimeter of a rectangle is 2(length+width)

So, P = 2(2x+12+3.5x)

Solving it we get,

P = 2(5.5x +12) ..............adding like terms

P = $(2\times5.5)+(2\times12)$ .............multiplying and adding

P = 11x+24

So, perimeter is 11x+24 feet. This value of fencing will be needed.

4 0

3 years ago

. Mrs. Rojas deposited $8000 into an account paying 4% interest annually. After 8 months Mrs. Rojas withdrew the $6000 plus inte

Mashcka [7]

well, keeping in mind that a year has 12 months, that means that 8 months is 8/12 of a year, when Mrs Rojas pull her money out.

$~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$6000\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ t=years\to \frac{8}{12}\dotfill &\frac{2}{3} \end{cases} \\\\\\ A=6000[1+(0.04)(\frac{2}{3})]\implies A=6000\left( \frac{77}{75} \right)\implies A=6160$

well, she put in 6000 bucks, got back 160 extra, that's the interest earned in the 8 months.

what if she had left her money for 1 whole year, then

$~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$6000\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ t=years\dotfill &1 \end{cases} \\\\\\ A=6000[1+(0.04)(1)]\implies A=6240$

so had she left it in for a year, she'd have gotten 6240, namely 240 in interest, well, what fraction of a year's interest was earned? or worded differently, what fraction is 160(8 months) of 240(1 year)?

$\cfrac{\stackrel{\textit{for 8 months}}{160}}{\underset{\textit{for 12 months}}{240}}\implies \cfrac{2}{3}$

4 0

2 years ago

Which measure of center would you use to describe a data set with no extreme values and no big gaps?

xxTIMURxx [149]

Answer:

The median

Step-by-step explanation:

The median always exists. The median does not have to be one of the data

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Use the drop-down menu to complete each statement. The amount of money you earn by working is your . The percentage of people ac

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The correct answers are:

- Wage/salary;

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