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Jlenok [28]
3 years ago
15

Karen reads 20 pages of her book in half hour. If she reads for 3 hours at that same rate, about how many pages of her book can

Karen read?
Mathematics
2 answers:
GrogVix [38]3 years ago
8 0

Answer:


120 pagesStep-by-step explanation:

well we just need to multiply 180/30 because 60 by 3 and we are gonna be reading for 3 hours. so that is 6. then we multiply 20 by 6 which is 120

so she can read 120 pages

julsineya [31]3 years ago
4 0

Answer:

She can read 120 pages

Step-by-step explanation:

We can use ratios to solve

20 pages      x pages

--------------- = -----------

1/2 hour            3 hours


Using cross products

20 *3 = 1/2 x

Multiply by 2

20*3*2 = 1/2 *2 *x

120 = x

She can read 120 pages

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It should be, B) 7.25.
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3 years ago
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Question 6 of 9 (3•8) • 1 = 3 • (8.1) O A. True B. False​
olga nikolaevna [1]

Answer:

No, (false). The question I assume was: (3*8)*1=3*(8.1)

Step-by-step explanation:

1. Multiple: 3 * 8 = 24

2. Multiple: <em><u>The result of step No. 1:</u></em> * 1 = 24 * 1 = 24

3. Conversion a decimal number to a fraction: 8.1 = \frac{81}{10} = \frac{81}{10}

   a) Write down the decimal 8.1 divided by 1: 8.1 = \frac{81}{1}

   b) Multiply both top and bottom by 10 for every number after the

       decimal point. (For example, if there are two numbers after the decimal

       point, then use 100, if there are three then use 1000, etc.)

       \frac{8.1}{1} = \frac{81}{10}

   Note: \frac{81}{10} is called a decimal fraction.

   c) Simplify and reduce the fraction

       \frac{81}{10} = \frac{81*1}{10*1} = \frac{81}{10}

4. Multiple: 3 * 8.1 = \frac{3*81}{1*10} = \frac{243}{10}

   Multiply both numerators and denominators. Result fraction keep to lowest

   possible denominator GCD(243, 10) = 1. In the next intermediate step the

   fraction result cannot be further simplified by canceling.

   In words - three multiplied by eighty-one tenths = two hundred forty-three

   tenths.

5. Compare: <em><u>The result of step No. 2 </u></em>vs <em><u>The result of step No. 4</u></em>: = 24 vs \frac{243}{10} = \frac{24}{1} vs \frac{243}{10} = \frac{24*10}{1*10} vs \frac{243}{10} = \frac{240}{10} vs\frac{243}{10} = 240 vs 243 = No

5 0
4 years ago
GEOMETRY PROBLEM THAT IS SOO HARD FOR ME <br> PLEASE HELP ME!!!!
12345 [234]
59.5 feet
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59.5
3 0
4 years ago
You buy items totaling $135.82. The sales tax is 4%. You give the clerk three $50 bills. Figure the following amounts:
MrRa [10]

Answer:

a. $5.43

b. $141.25

c. $8.75

Step-by-step explanation:

First you find the total amount you it cost for all the items

$135.82 + 4% = $141.25

You give three $50 dollar bills

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$150 is the amount you give

--------------------------------------

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$5.43 is the amount of the sale price

---------------------------------------

To find the amount is cost for all the items you add the sales tax + the original price

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$141.25 is the amount including the tax

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Subtract

150 - 141.25 = 8.75

So you will get $8.75 back

7 0
3 years ago
Slove the inequality 5(x + 1) &lt;25<br> x &lt; 4<br> x &gt; -4<br> x &gt; 4<br> Pls help meee
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Use the distributive property to make 5x+5.

5x+5<25

Subtract 5 from both sides.

5x<20

Divide both sides by five.

x<4

7 0
3 years ago
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