2 years ago

Fwam answered 149 questions correctly on his multiple choice science final that had

Mathematics

1 answer:

aniked [119]2 years ago

6 0

Answer:

he answered 74.5% of questions correctly

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Two-fifths of a number is decreased by three. Find the value of the expression if the number is twenty-five.

Sindrei [870]

Let's take the number as x.

two-fifths of a number = 2x / 5
decreased by 3 = (2x/5) - 3

(2x/5) - 3
(2*25/5) - 3
(2*5) - 3
10 - 3
7

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3 years ago

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Which part of the expression is a factor 7(x+8) A. 21 B.8 C. 3x D. 7

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It is 7. None of the other ones fit at all

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2 years ago

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Simplify the expression where possible. (t 9) -8

makvit [3.9K]

Answer:

$\frac{1}{t^{72}}$ .

Step-by-step explanation:

To solve this problem, we need to simplify the expression $(t^{9})^{-8}$ .

We know that $(x^{a})^{b} = x^{ab}$

Therefore:

$(t^{9})^{-8} =t^{-72} =\frac{1}{t^{72}}$ .

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3 years ago

If JM = 5x – 8 and LM = 2x – 6, which expression represents JL?

muminat

Answer:

The expression represents JL is 3x - 2.

Step-by-step explanation:

Given:

JM = 5x – 8 and LM = 2x – 6.

Now, to find expression represents JL.

JM = JL + LM

Subtracting both sides by LM we get:

JM - LM = JL.

JL = JM - LM

Now, putting the expression to get JL:

$JL=5x-8-(2x-6)$

$JL=5x-8-2x+6$

$JL=3x-2.$

Therefore, the expression represents JL is 3x - 2.

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3 years ago

In the diagram, which letter represents the transition from gas to liquid?

Tanya [424]

Answer:

I answered it as C, but the correct answer is B :)

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