3 years ago

5a^2-15 using the distributive property

Mathematics

1 answer:

Aneli [31]3 years ago

7 0

the answer is in the picture

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Calculate the value of this expressions.Give your answer as a mixed number <br>2 1/5 ÷(2 2/3 - 3/4)

Blababa [14]

Answer:

132/115

= 1 17/115

hope this helps

5 0

3 years ago

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Manuela solved the equation 3−2|0.5x+1.5|=2 for one solution. Her work is shown below. 3−2|0.5x+1.5|=2 −2|0.5x+1.5|=−1 |0.5x+1.5

forsale [732]

Answer:

x=-4

Step-by-step explanation:

The given equation is

$3-2|0.5x+1.5|=2$

Subtract 3 from both sides.

$3-2|0.5x+1.5|-3=2-3$

$-2|0.5x+1.5|=-1$

Divide both sides by -2.

$\dfrac{-2|0.5x+1.5|}{-2}=\dfrac{-1}{-2}$

$|0.5x+1.5|=0.5$

If |x|=a, then x=a or x=-a.

$0.5x+1.5=\pm 0.5$

Case 1: $0.5x+1.5=0.5$

Subtract 1.5 from both sides.

$0.5x=0.5-1.5$

$0.5x=-1$

Divide both sides by 0.5.

$x=-2$

Case 2: $0.5x+1.5=-0.5$

Subtract 1.5 from both sides.

$0.5x=-0.5-1.5$

$0.5x=-2$

Divide both sides by 0.5.

$x=-4$

Therefore, one solution is x=-2 and other solution is x=-4.

5 0

4 years ago

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4x-8=12 when x=-2<br> verify the solution of the equation and explain.

mojhsa [17]

Answer:

Solve in terms of the arbitrary variable x . x = 5 5 = − 2

Step-by-step explanation:

7 0

3 years ago

Can you multiply these decimals in your head? You should be able to do it very quickly. Can you figure out the trick? 26.9 × 52.

Vanyuwa [196]

I’m kinda dumb but isn’t it 0 because anything times 0 is 0

3 0

3 years ago

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Multiply. √3 ⋅ √5 ⋅ √7 Enter your answer, in radical form, in the box.

Galina-37 [17]

Answer

Step by step explanation

$\sqrt{3} \times \sqrt{5} \times \sqrt{7}$

The product of roots with the same index is equal to root of the product

$= \sqrt{3 \times 5 \times 7}$

Calculate the product

$= \sqrt{105}$

Hope this helps...

Best Regards!

3 0

3 years ago