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Mathematics

1 answer:

Maru [420]3 years ago

3 0

I’m trying to looking :)

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Does anyone know how to solve this

madam [21]

Hey I think the answer is letter b if not
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3 years ago

What is the answer to -4(5+(-2))

OleMash [197]

Answer:

-12

Step-by-step explanation:

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3 years ago

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Can someone help me plz lol I can't figure this one out

lidiya [134]

$4NO+6H_{2} O\Leftrightarrow4 NH _{3}+5O_{2}$

Step-by-step explanation:

$NO+H_{2} O\rightarrow NH _{3}+O_{2}$

$4NO+6H_{2} O\Leftrightarrow4 NH _{3}+5O_{2}$

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3 years ago

The length of a rectangle is 2 m longer than its width. if the perimeter of the rectangle is 40 m , find its area.

vredina [299]

L=w+2 and 2w+2l=40

Substitute length for w+2 in perimeter formula.

2w+2(w+2)=40
2w+2w+4=40
4w+4=40
4w=36
w=9

l=w+2
l=9+2
l=11

a=lw=11*9=99 meters

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3 years ago

Janice correctly answered 21 of the 24 question. What percent of the questions did she answer correctly?

ikadub [295]

Answer: 87.5%

Explanation: Since Janice answered correctly 21 questions out of 24 questions, you would divide 21 from 24

21/24 = 0.875

0.875 as a percentage would mean moving the decimal point two places to the right as 87.5%

6 0

3 years ago