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3 years ago

Two less than 2 times a numberis the same as the number plus 64.What is the number?

Mathematics

2 answers:

zepelin [54]3 years ago

5 0

2x - 2 = x + 64

2x - 66 = x

66 = x

2(66) = 132. 132 - 66 = 66. 66 = x.

bixtya [17]3 years ago

3 0

The number is 66 hope this helped

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Complete the equation -67-____= 0 PLEASE HELP ASAP!!

erica [24]

Answer:

-67

Step-by-step explanation:

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4 years ago

Rationalize the denominator of $\frac{\sqrt{32}}{\sqrt{16}-\sqrt{2}}$. The answer can be written as $\frac{A\sqrt{B}+C}{D}$, whe

musickatia [10]

Rationalizing the denominator involves exploiting the well-known difference of squares formula,

$a^2-b^2=(a-b)(a+b)$

We have

$(\sqrt{16}-\sqrt2)(\sqrt{16}+\sqrt2)=(\sqrt{16})^2-(\sqrt2)^2=16-2=14$

so that

$\dfrac{\sqrt{32}}{\sqrt{16}-\sqrt2}=\dfrac{\sqrt{32}(\sqrt{16}+\sqrt2)}{14}$

Rewrite 16 and 32 as powers of 2, then simplify:

$\dfrac{\sqrt{32}}{\sqrt{16}-\sqrt2}=\dfrac{\sqrt{2^5}(\sqrt{2^4}+\sqrt2)}{14}$

$\dfrac{\sqrt{32}}{\sqrt{16}-\sqrt2}=\dfrac{2^2\sqrt2(2^2+\sqrt2)}{14}$

$\dfrac{\sqrt{32}}{\sqrt{16}-\sqrt2}=\dfrac{4\sqrt2(4+\sqrt2)}{14}$

$\dfrac{\sqrt{32}}{\sqrt{16}-\sqrt2}=\dfrac{16\sqrt2+4(\sqrt2)^2}{14}$

$\dfrac{\sqrt{32}}{\sqrt{16}-\sqrt2}=\dfrac{16\sqrt2+8}{14}$

$\dfrac{\sqrt{32}}{\sqrt{16}-\sqrt2}=\dfrac{8\sqrt2+4}7$

So we have A = 8, B = 2, C = 4, and D = 7, and thus A + B + C + D = 21.

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3 years ago

Helena makes $500 per week and she puts 15% of her paycheck in savings how much money does she put in savings

posledela

500 x .15 = $75.00.........................

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3 years ago

Read 2 more answers

(28 divided 7 + 6 divided 3) x 1/2

prohojiy [21]

Answer:

Step-by-step explanation:

28/7=4

6/3=2

4+2=6

6*1/2=3

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3 years ago

What is negative 94/21 converted into a positive number?

Alexus [3.1K]

You can't just change negative numbers into positive numbers. They're completely different things.

I'm sure you worked with the number line in school. Do you remember how the negatives are on one side of zero, and the positives are on the other side ?

You dress a lot different when it's 40 degrees below zero outside, compared to what you put on when it's 40 degrees above zero. They're completely different numbers.

In the same way, 1,400 feet below sea level is the lowest spot on Earth, at the Dead Sea in Israel, but 1,400 feet above sea level is like somewhere in Nebraska or northern Texas. They're completely different numbers.

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3 years ago