Can you help me please

Mathematics

1 answer:

Inessa05 [86]2 years ago

3 0

Answer: x = 483

21 times 23 is 483

483/21 = 23

Step-by-step explanation:

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Each cube in this figure is a -centimeter cube. What are the dimensions of the prism? Select all that are true.

finlep [7]

Answer:

he first one and the third one

Step-by-step explanation:

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15Points!!<br> Factor completely.<br><br><br> 12x² +28x

Zigmanuir [339]

Answer:

4x(3x+7)

Step-by-step explanation:

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Ajax is 5 and 1 fourth feet tall. His sister is 3 eighths foot shorter than Ajax How tall is Ajax Sister?

user100 [1]

Answer:

$4\frac{3}{4}$ feet tall

Step-by-step explanation:

Ajax is "5 and 1 fourth feet tall", which can be written as the mixed number $5\frac{1}{4}$ .

His sister is "3 eighths foot shorter", so she's 3/8 feet shorter than 5 1/4.

So, this is just a subtraction problem:

$5\frac{1}{4} -\frac{3}{8}$

To solve this, we want to convert 5 1/4 into an improper fraction, which is: $\frac{21}{4}$ . Now, we want to find a common denominator. In this case, that common denominator is 8, so $\frac{21}{4} =\frac{42}{8}$ .

Finally, we subtract 3/8 from 42/8: $\frac{42}{8} -\frac{3}{8} =\frac{39}{8}$ . So, Ajax's sister is 39/8 feet. Converting this into a mixed number, we have: 39/8 = 4 $\frac{6}{8} =4\frac{3}{4}$ .