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sleet_krkn [62]
3 years ago
7

Please some help me!!!

Mathematics
1 answer:
DiKsa [7]3 years ago
6 0
The mistake that was made is that she should of multiplied the fractions by the exponents first 
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If Marie were to paint her living room alone, it would take 7 hours. Her sister Barbara could do the job in 8 hours. How many ho
Zielflug [23.3K]

Answer:

\sf\longmapsto \:  3.73 hours

Step-by-step explanation:

\sf\longmapsto \:  \frac{1}{7 } +  \frac{1}{8}

\sf\longmapsto \:  \frac{15}{56}

Now, Reciprocal–

\sf\longmapsto \:  \frac{56}{15}

\sf\longmapsto \:  3.73 hours

4 0
3 years ago
What is the volume of a can of beans with a height of 20 cm. and a radius of 12 cm? Use 3.14 to approximate π. Express your answ
lisov135 [29]

Answer:

9043.20 cm^3

Step-by-step explanation:

volume of can = π r^2 h

= (3.14) (12)^2 (20)

=9043.2 cm^3

4 0
4 years ago
Plz help i will give 5 star and like
marin [14]

Answer:

<h2>B</h2><h2 /><h2 /><h2 /><h3>Hope this helps! Have a great day!</h3>
5 0
3 years ago
Read 2 more answers
Tom will set up chairs for the school talent show. He will set up 15% more chairs than the number of tickets sold and 5 for the
anygoal [31]
First, find 15% of 80 and add it to 80

15% = 0.15

0.15 × 80 = 12

80 + 12 = 92

Remember that Tom will add 5 more for the judges

92 + 5 = 97

Your answer is D. 97 chairs

Hope this helps :)
8 0
3 years ago
With out computing each sum find which is greater O or E and how much O=5+7+9+11...+101
nikitadnepr [17]

I think that O would be greater because the last numbers listed are 100 and 101 and O has the ending value of 101, which is greater than 100, so it only makes sense that O would be a greater number than E.

Hope this helps! ;)

4 0
3 years ago
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