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3 years ago

A .720 divided by 9 B.720 divided by 90 C.7,200 divided by 90 D.7,200 divided by nine

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

6 0

Answer:

800

Step-by-step explanation:

hope this helped becuase there wasnt a question

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Ms.Jones mowed 1/4 of her lawn. Her son mowed 3/7 of it. Who mowed most of the lawn? How much of the lawn still needs to be mowe

sleet_krkn [62]

Answer:

Her son mowed more of the yard than Ms. Jones did.

32 percent of the yard still needs to be mowed.

Step-by-step explanation:

Find the LGM of 1/4 and 3/7 - that is 28

1/4 to 7/28 and 3/7 to 12/28

3/7 is more than 1/4

Her son mowed 43% of the yard or 7/28 of the yard or 1/4 of the yard.

Ms. Jones mowed 25% of the yard or 12/28 of the yard or 3/7 of the yard.

Together they mowed 68% of the yard or 19/28 of the yard.

They still have 32% of the yard left to mow, or 9/28 of the yard left to mow.

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3 years ago

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It takes Emma 18 minutes to type and spell check 14 pages of a manuscript. Find how long it takes her to type and spell check 77

NNADVOKAT [17]

Answer:

99 minutes, or an hour and 39 minutes.

Step-by-step explanation:

It takes Emma 18 minutes to do 14 pages. That means that we can set up a proportion, where Emma uses 18 minutes to do 14 pages, which is equal to x minutes per page!

$\frac{18}{14} =\frac{x}{1}$

14x = 18

7x = 9

x = 9/7

So, each page takes 9/7 minutes for Emma to finish.

She will do 77 pages. 77 * (9/7) = 11 * 9 = 99.

So, it will take Emma 99 minutes, or an hour and 39 minutes, to type and spell check 77 pages.

Hope this helps!

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4 years ago

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A quadratic equation of the form 0 = ax2 + bx + c has a discriminant value of –16. How many real number solutions does the equat

vredina [299]

$\bf \qquad \qquad \qquad \textit{discriminant of a quadratic} \\\\\\ y=\stackrel{\stackrel{a}{\downarrow }}{a}x^2\stackrel{\stackrel{b}{\downarrow }}{+b}x\stackrel{\stackrel{c}{\downarrow }}{+c} ~~~~~~~~ \stackrel{discriminant}{b^2-4ac}= \begin{cases} 0&\textit{one solution}\\ positive&\textit{two solutions}\\ \stackrel{-16}{negative}&\textit{no solution}~~\checkmark \end{cases}$

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3 years ago

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Gabriel is making a mixture of compost and soil to use for a special plant. He wants his final mixture to be 2 parts compost to

ICE Princess25 [194]

2parts compost and 10pats potting soil
2/10=1/5 which is 1 to 5 ratio.
He wants to end up with 6 kilograms which is 1 kg compost and 5kg of plotting soil.so he can use 1 kg compost
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3 years ago

A rectangle has a height of k^2+3k 2 +3k, squared, plus, 3 and a width of k^2+7k 2 +7k, squared, plus, 7. Express the area of th

vlada-n [284]

Answer: $k^4+10k^3+21k^2$