4 years ago

Find 26 x 122. Estimate first. 122x26 estimate?

1 answer:

4 0

First, you would round 26 and 122. 26 rounds up to 30 and 122 rounds up to 120. You would then multiply the 2. The picture given will give you your estimate. The answer should be around 3,600. I hope this helps!

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Find the missing number ___:7 = 12:21a.14b.12c.4d.3

Novay_Z [31]

$x:7=12:21\to\dfrac{x}{7}=\dfrac{12}{21}\ \ \ |cross\ multiply\\\\21x=7\cdot12\\21x=84\ \ \ |divide\ both\ sides\ by\ 21\\\boxed{x=4}\\\\Other\ method:\\\dfrac{x}{7}=\dfrac{12}{21}\\\\21:7=\boxed3\to12:\boxed3=4\\\\\boxed{\frac{4}{7}=\frac{12}{21}\to4:7=12:21}$

6 0

4 years ago

Jessica and her sister have a combined age of 47. Jessica is 5 years older than her sister. How old is Jessica

maw [93]

Let the sister be x years old.
Then Jessica is x + 5 years old.
Their ages add to 47.

x + x + 5 = 47

2x + 5 = 47

2x = 42

x = 21

x + 5 = 26

Jessica is 26, and her sister is 21.

4 0

4 years ago

OleMash [197]

Answer:

13.7

Step-by-step explanation:

The computation of the volume of toy A is shown below:

7 × k^2=9

k^2= 9 ÷ 7

k=√9 ÷ 7

k = 1.133893419

Now

= 20 ÷ 1.133893419³

=13.7

4 0

3 years ago

The probability that Scott will win his next tennis match is 3/5

goblinko [34]

Answer:

the probability that he will not win is 2/5 cause it's just the chance that he doesn't win

6 0

3 years ago

The surface area of a triangular prism is 112 square inches. What is the surface area of a similar prism with dimensions that ar

deff fn [24]

66 square inches? I'm not sure.

5 0

3 years ago