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2 years ago

Use the properties of exponents to rewrite the expression (-3yz)(-3yz)(-3yz)(-3yz)

1 answer:

8 0

$\bf (-3yz)(-3yz)(-3yz)(-3yz)\implies (-3yz)^1(-3yz)^1(-3yz)^1(-3yz)^1 \\\\\\ (-3yz)^{1+1+1+1}\implies (-3yz)^4\implies (-3)^4 y^4 z^4\implies 81y^4 z^4$

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What equation has the solution n=-2/3? A: 4n+5=7/3 B: 2n+4/3=1 C: 4n+7/3=5 D: 2n+1=4/3

serious [3.7K]

A has the solution of -2/3.

6 0

3 years ago

A 20-foot ladder leans up against the side of a building so that the foot of the ladder is 10 feet from the base of the building

harina [27]

Answer:

17.3

Step-by-step explanation:

To solve this equation, you need to use the pythagorean theorem which is:

$a^{2} +b^{2}= c^{2}$

a= length

b= height

c= hypotenuse

First, substitute in your values for the equation:

$10^2+b^{2} =20^{2}$

Then, use the squares in the equation:

$100+b^{2} =400$

Then, subtract 100 from both sides to isolate b:

$b^{2} =300$

Finally, square root both sides to get your answer:

$b=17.3205080757$

Then round to the nearest tenth which gives you 17.3.

6 0

2 years ago

Persia make a flower arrangement using the eight longest flowers which is the combined height of flowers Persia uses

andriy [413]

Answer:

Persia should measure the length of each flower that she used in creating this flower arrangement and add up all the values to get the total height (i.e., the combined height) of the eight flowers used. Make sure to keep the units consistent all throughout the calculation to avoid any errors. For example, if centimetres are used to measure height of one flower, use centimetres all throughout and not switch to using inches at any point.

Hope that answers the question, have a great day!

6 0

2 years ago

The perimeter P (in yards) of a soccer field is represented by the formula = 2 + 2, where is the length (in yards) and is the wi

aliya0001 [1]

Answer:

$W=(\frac{P}{2}-L)\ yd$

Step-by-step explanation:

we know that

The perimeter P (in yards) of a soccer field is

$P=2L+2W$

where

L is the length in yards

W is the width in yards

Solve the equation for the width W

That means -----> isolate the variable W

Subtract 2L both sides

$P-2L=2W$

Divide by 2 both sides

$W=(\frac{P}{2}-L)\ yd$

4 0

2 years ago

10.

Inga [223]

Answer:

length = 15

breadth = 25

Step-by-step explanation:

length = breadth + 10

let length be x

length = x

breadth = x + 10

perimeter = 2(length) + 2(breadth)

80 = 2(x) + 2(x + 10)

80 = 2x + 2x + 20

80 = 4x + 20

80 - 20 = 4x

60 = 4x

15 = x

length = x = 15

breadth = x + 10 = 25

6 0

2 years ago