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3 years ago

Helppppppppp plzzzzz

Mathematics

1 answer:

Shkiper50 [21]3 years ago

8 0

Answer: 4

Step-by-step explanation:

so you basically make the + sign into a - sign as when there is a + and - sign next to each other it will always change into a - sign so once you do that it will look like this

11+(-7)

11-7

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Evaluate 3x^3 - 5y^2 x=5 y=2

Sliva [168]

Answer:

355

Step-by-step explanation:

3 $x^{3}$ -5 $y^{2}$ =3*5³-5*2²

3*5³-5*2²=3*125-5*4

3*125-5*4=375-20

375-20=355

6 0

3 years ago

Pleaseeeee hurryy need help!!

lord [1]

it is the last one

Step-by-step explanation:

by simplifying powers it becomes

8g^8/64h ^5

simplifying it further gives

g^8/ 8h^5

8 0

3 years ago

Read 2 more answers

Plz helppppp :)<br> 5(x−3 3/4)=7 1/2

pentagon [3]

the answer is 10x

Solve for

by simplifying both sides of the equation, then isolating the variable.

5 0

2 years ago

Read 2 more answers

Expand the following expression 5.2(25-3.89x

Katyanochek1 [597]

Answer:

119.6 - 18.824x

Step-by-step explanation:

5.2 x 23 = 119.6

5.2 x 3.62x = 18,824x

= 119.6 - 18.824x

sorry if this doesn't help

4 0

2 years ago

Aya and Mary are 12 miles apart on a path when they start moving toward each other.

Ostrovityanka [42]

Answer:

1.5 hours

Step-by-step explanation:

According to the scenario, computation of the given data are as follows,

Aya and Mary distance = 12 miles

Let, meeting point from Aya = Z miles

So, Aya covers Z miles to reach Mary.

Hence, Mary covers (12 - Z ) miles to reach Aya

Here, Time = $\frac{Distance}{Speed}$

Aya = $\frac{Z}{5}$

Mary = $\frac{12-Z}{3}$

If, same time taken, then we can solve by following method,

$\frac{Z}{5} = \frac{12-Z}{3}$

By solving the equation, we get

Z = 60 ÷ 8

Or Z = 7.5 miles

Hence, time taken for both to meet = 7.5 ÷ 5

= 1.5 hours

5 0

2 years ago