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3 years ago

What number is 40% of 30?

Mathematics

1 answer:

Darya [45]3 years ago

6 0

Answer:

Step-by-step explanation:

40/100*30

=12

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Estimate the percent of the number.<br> 11% of 504

solmaris [256]

55 is the estimated answer

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2 years ago

Read 2 more answers

Sage and Tom started the month with the same number of talk minutes on their cell phones. Sage talked for 7 minutes with her dad

Paraphin [41]

Answer:

a. Sage and Tom have the same number of talk minutes left on their cell phone plans.

b. y = x - 7

Explanation:

Sage talked for 7 minutes with her dad.

Tom talked for 4 minutes with a friend and 3 more minutes with his mom which means he spoke for :

= 4 + 3

= 7 minutes

They both spoke for 7 minutes and therefore have the same amount of time left.

Algebraic expression:

Assuming the time Tom started with is denoted by x and the time he is left with is denoted by y.

The expression is:

y = x - 7

6 0

2 years ago

What number has 9 tens, 7 fewer thousands than tens, the same number of hundreds as

wel

Answer:

123456678890

Step-by-step explanation:

I think this is the answer

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3 years ago

The annual 2-mile fun-run is a traditional fund-raising event to support local arts and sciences activities. It is known that th

victus00 [196]

Answer: 0.0228

Step-by-step explanation:

Given : The mean and the standard deviation of finish times (in minutes) for this event are respectively as :-

$\mu=30\\\\\sigma=5.5$

If the distribution of finish times is approximately bell-shaped and symmetric, then it must be normally distributed.

Let X be the random variable that represents the finish times for this event.

z score : $z=\dfrac{x-\mu}{\sigma}$

$z=\dfrac{19-30}{5.5}=-2$

Now, the probability of runners who finish in under 19 minutes by using standard normal distribution table :-

$P(X$

Hence, the approximate proportion of runners who finish in under 19 minutes = 0.0228

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2 years ago

Challenge A large university accepts 60% of the students who apply. Of the students the university

Irina-Kira [14]

Answer:

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Step-by-step explanation:

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2 years ago