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3 years ago

Please help me with this problem. I am not sure if I am correct.

Mathematics

1 answer:

jek_recluse [69]3 years ago

3 0

Answer:

only -7

Step-by-step explanation:

Just plug them in.

so for x=-7 $\sqrt{-2(-7)-5}=(-7)+4\\\sqrt{9}=-3 \\ 3=-3$ So this one is extraneous

Then if you plug -3 in you get 1 = 1 so this one is not extraneous. if you need me to work this one out let me know.

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mr Goodwill [35]

Answer

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Step-by-step explanation:

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3 years ago

(4) (-5) 2/(3)= ? i have no idea how to solve this

Monica [59]

Answer:

-1.6

Step-by-step explanation:

first you want to subtract 4 and 5 then you want to divide 2 and 3 and then when you get that divide -1 by 0.6 and your answer will be -1.6

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3 years ago

Simply 3x to the power of 2 of over 9x to the power of 5

77julia77 [94]

Answer:

1/6561x³ or 6561x⁻³

Step-by-step explanation:

(3x)²/(9x)⁵

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9/59049x³

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3 0

2 years ago

Which one do i choose fam? I suck at geometry

Viefleur [7K]

The best choice would probably be the third option from the top. Since by using the distance formula you can solve for the length or distance of each of the sides of the triangle, and check to see if it is equal. As would be in an equilateral triangle.

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5 0

3 years ago

Find the missing section. Answers must be in fraction form.

frozen [14]

Answer:

$\frac{1}{10}$

Step-by-step explanation:

We have a circle that is split in three sections, two of which we know and we are asked to find the third missing section.

For the circle, we know that 4/5 and 1/10 is fit. Now we need the last one, to solve, we need to get the same denominator and see how much is missing.

Since 1/10 is our highest denominator, let's change 4/5 to have 10 as a denominator. Which would be through multiplying 5 to get 10.

What times 5 equals 10?

Now multiply both numerator and denominator by 2 to get our portion.

$\frac{4*2}{5*2}$

$\frac{8}{10}$

Now we have the same denominator, let's add our two fractions and see how much we have left.

8/10 + 1/10

9/10

We have 1/10 missing, therefore 1/10 is the answer.

3 0

2 years ago