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4 years ago

Explain how solving -7y > 161 is different from solving 7y > - 161

2 answers:

8 0

Sample response: Both inequalities use the division property to isolate the variable, y. When you divide by a negative number, like –7, you must reverse the direction of the inequality sign. When you divide by a positive number, like 7, the inequality sign stays the same. The solution to the first inequality is y > -23, and the solution to the second inequality is y <>

IRISSAK [1]4 years ago

6 0

Step-by-step explanation:

-7y > 161

7y < 161

7÷7=1

161÷7=23

y=23

7y > -161

7÷7=1

-161÷7=-23

y=-23

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Simplify<br><br>Square root of 50 over 2 times -4 + square root of 121

kobusy [5.1K]

Answer:

-9

Step-by-step explanation:

$\sqrt{\dfrac{50}{2}}\cdot(-4)+\sqrt{121}=-4\sqrt{25}+11=-4\cdot5+11\\\\=-20+11=\boxed{-9}$

Your calculator can help with this.

4 0

2 years ago

Which shows the number 27 factored into prime numbers? A. 2 · 3 · 3 B. 1 · 3 · 3 · 3 C. 3 · 3 · 3 D. 3 · 9

Vilka [71]

Hi!

<h3>To find the prime factorization of a number, keep dividing by the smallest factor that goes into it. </h3>

27/3 = 9

9/3 = 3

3/3 = 1

<h2>The answer is C. 3 · 3 · 3</h2>

Hope this helps! :)

-Peredhel

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4 years ago

Find the unit price of a 3-pack of bottled juice for$6.75. how much does 1 bottle cost.

Olin [163]

Answer:

the answer is 2.25

Step-by-step explanation:

you divide 6.75÷ 3

6 0

3 years ago

Read 2 more answers

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Anettt [7]

Answer:

28.26m^2 (aka. 28.26 meters squared)

Step-by-step explanation:

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Since r=3, then A=pi*3^2=9pi=28.26

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3 years ago

Xto the 2nd power - 49 = 0

AnnZ [28]

Answer:

7 to the second power... because 7 times is 49 and 49-49 is 0... so 7 to the second power

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3 years ago