2 years ago

1) The sum of the digits in a 2 digit number is 7. Reversing the digits increases the number by 9. What is the number?

1 answer:

6 0

Answer:

Step-by-step explanation:

Sum of two numbers = 7

1+6

2+5

3+4

34+9=43

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lidiya [134]

Move the decimal places, the answer is 6.7 x 10^6

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3 years ago

Pepsi [2]

Change 48% to 0.48
0.48 x 18 = 8.64
rounded would be 9

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2 years ago

Delvig [45]

Whats the question??

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3 years ago

melisa1 [442]

Answer:

23.9 mm

Step-by-step explanation:

A cube can be unfolded into the net shown below. Find the total

surface area of the cube.

23.9 mm

7 0

3 years ago

vivado [14]

Let $X$ be the random variable for the time a given person from the population spends sleeping. With $X\sim\mathcal N(6.8,0.4^2)$ we have

$P(X>8)=P\left(\dfrac{X-6.8}{0.4}>\dfrac{8-6.8}{0.4}\right)=P(Z>3)\approx0.0013$

where $Z\sim\mathcal N(0,1^2)$ .

$P(X\le6)=P\left(\dfrac{X-6.8}{0.4}\le\dfrac{6-6.8}{0.4}\right)=P(Z\le-2)\approx0.0228$

$P(7$

Rounded to the nearest whole number, that comes out to about 31%.

5 0

3 years ago