3 years ago

Help me. Two numbers have a sum of 30. Half of their difference is 7. Find the numbers.

1 answer:

3 0

Answer:

the correct answers are 22 and 8

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lakkis [162]

If there were 49 cars in a line that stretched 528 feet, what is the average car length? assume that the cars are lined up bumper-to-bumper

Answer: We are given there are 49 cars

Also these 49 cars are in a line stretched 528 feet.

Now the average length of the car is:

Average length = $\frac{(length-covered-by-49-cars)}{Number-of-cars}$

= $\frac{528}{49}=10.78$

Therefore, the average length of car is 10.78 feet

6 0

3 years ago

Vlad1618 [11]

The probability that x >17 will be found as follows:
the z-score is given by:
z=(17-15.2)/0.9=2
Thus
P(X>17)=1-P(x<17)=P-(z=2)
=1-0.9772
=0.0228

8 0

3 years ago

Lina20 [59]

I believe the answer should be x equals 37

4 0

3 years ago

Lunna [17]

Answer:

Can you elaborate, please?

Step-by-step explanation:

7 0

3 years ago

Setler79 [48]

The answer is D.

Explanation: The square root of a negative number is imaginary which is another name for a complex number

8 0

2 years ago