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2 years ago

Which expressions are equivalent to-2y-8+4y?

Mathematics

1 answer:

SpyIntel [72]2 years ago

6 0

Answer:

The expression that is equivalent to -2y-8+4y is 2y-8.

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cestrela7 [59]

I’d say but it in one box because it is a prime number.

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4 years ago

Ken took 64 minutes to walk 4 miles on flat terrain. If he walked at a constant rate, how long would it take Ken to complete 5 m

Svetlanka [38]

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3 years ago

D+7/−3=4 What is d? Thanks!

givi [52]

Answer

$\boxed {d= \frac{19}{3}}$

Solution

Simplify both sides of the equation.

$\frac{7}{3} + \frac{-7}{3}$

We are left with d = 4+ $\frac{7}{3}$

Add

$\frac{12}{3}+\frac{7}{3} =\frac{19}{3}$

Hence, d = $\frac{19}{3}$

7 0

3 years ago

What is the value of the expression (-8/9) divided by (-2/3) x (-4 1/2) ?

Law Incorporation [45]

Answer:

B) $x=-\frac{8}{27}$

Step-by-step explanation:

$-\frac{8}{9}=-\frac{2}{3}x(-4\frac{1}{2})$

To start things off, lets convert any mixed numbers like $-4\frac{1}{2}$ into improper fractions. In this case $-4\frac{1}{2}$ as an improper fraction is $-\frac{9}{2}$ .

$-\frac{8}{9}=-\frac{2}{3}x(-\frac{9}{2})$

Now let's multiply $-\frac{2}{3}x$ by $-\frac{9}{2}$ . When multiplying fractions, all you need to do is multiply the numerators and denominators separately. Your final answer should be $\frac{18}{6}x$ .
*Note: a negative times a negative is a positive, so that's why we now have an even number in front of $x$ instead of a negative number.

$-\frac{8}{9}=\frac{18}{6}x$

Now we want to isolate $x$ , so we'll have to divide $-\frac{8}{9}$ by $\frac{18}{6}$ , but dividing these two fractions seems like a pain. To make things a bit easier, let's turn our improper fraction into a whole number. To change this improper fraction into a whole number, we should ask ourselves what times $6$ is equal to $18$ ? In this case, the answer is 3, so $\frac{18}{6}$ is actually the same thing as the whole number $3$ .
*Note: In general, keeping fractions as either improper fractions or whole numbers will make doing math easier. Avoid mixed numbers like $-4\frac{1}{2}$ when trying to do math and simply change improper fractions into mixed numbers once you have your final solution.

$-\frac{8}{9}=3x$

Now divide $-\frac{8}{9}$ by $3$ . Think of it as multiplying the denominator of $-\frac{8}{9}$ by $3$ .

$-\frac{8}{27}=x$

6 0

4 years ago

Can anyone simplify 24q2/8q-3

Morgarella [4.7K]

24q^2 / 8q^-3

lets break this down...
24/8 = 3

q^2 / q^-3....when dividing exponents with the same base, keep the base and subtract the exponents. q^2 / q^-3 = q^(2 -(-3) = q^(2 + 3) = q^5

put them together and u get : 3q^5

4 0

4 years ago