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2 years ago

Which expression is a perfect cube? A. x8 B. y24 C. m28 D. x64

Mathematics

2 answers:

OLEGan [10]2 years ago

6 0

Answer:

B. Y²⁴

Step-by-step explanation:

For perfect cubes, the exponents are a multiple of three. If yᵃ is a perfect cube, then a/3=k where k is a whole number.

Among the provided choices, the exponent of y²⁴ is divisible by 3.

24/3 = 8.

Thus y²⁴ is a perfect cube.

Y_Kistochka [10]2 years ago

4 0

Answer:

thats the answer on edge 2020

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Compare -4 ____ -12 9 ___ -35

omeli [17]

-4 < -12 and 9 > -35

Hope this helps!

5 0

2 years ago

Cara and Jena, working together, can clean the house in 4

kirill115 [55]

Answer:

$\frac{4}{3}$ hrs/house

Step-by-step explanation:

Rate is the amount of work done per unit of time;

Let Cara's rate = C

Let Jena's rate = J

C + J = 4 ------ i

Now;

Working alone:

Jena takes twice as long as Cara

J = 2C ---- i

How long does it take Cara to clean a house alone

C + J = 4

J = 2C

C + 2C = 4

3C = 4

C = $\frac{4}{3}$ hrs/house

6 0

2 years ago

please help me and explain. what is the value of <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7By%7D%20" id="TexFormula1"

rosijanka [135]

$\frac{28}{x^2} = \frac{7}{xy}$
multiplying both sides by x^2
$28=\frac{7x^2}{xy}$
simplifying
$28= \frac{7x}{y}$
dividing by 7
$\frac{28}{7}= \frac{x}{y}$

8 0

2 years ago

5. Write the conversion factor for converting meters to centimeters.

BARSIC [14]

Answer:

Third option

O 100 cm

Step-by-step explanation:

$100cm \div {10}^{2} = 1m \\ hope \: this \: helps.. \\ good \: luck$

8 0

3 years ago

How do you find X and Y?<br> 4y + 5z = 60<br> 5x + 3y = 60<br> 4x + 3z = 60

oee [108]

Answer:

1. y=5 x=8

2. x=9 y=5

3. x=12 z=4

Step-by-step explanation:

1. 4(5)+5(8)=60

2. 5(9)+3(5)=60

3. 4(12)+3(4)=60

6 0

2 years ago