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3 years ago

10

Round 6.4 to the nearest whole number

1 answer:

Galina-37 [17]3 years ago

6 0

If a number has 0.5, it rounds up to the next number, but if the number has 0.4 or lower, then it rounds down to the number before.

6.4 rounds down to 6 because 6 is a whole number

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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Vesnalui [34]

Since they are independent events to find the probability of both is P(A) * P(B)

P(A) = P(Heads) = $\frac{1}{2}$
P(B) = P(Roll ≥ 4) = $\frac{3}{6} = \frac{1}{2}$

Now multiply those fractions together

$\frac{1}{2} * \frac{1}{2} = \frac{1}{4}$ = P(Heads & ≥ 4)

5 0

3 years ago

If b= 7, what is 1/3(2b+10)? Please help

goblinko [34]

Answer:8

Step-by-step explanation:

First, substitute 7 into the equation for b:

1/3(2x7+10)

Now, simplify using the order of operations:

1/3(14+10)

Then:

1/3 (24)

And you arrive at your answer:

8

3 0

4 years ago

Read 2 more answers

What is the equation of the line that passes through the point (-4,-2) and has a slope of -1/2

vampirchik [111]

Answer: y=-1/2x-4

Step-by-step explanation:

If you use point slope formula you get

y+2=-1/2(x+4)

simplify that in y=mx+b and you get

y=-1/2x-4

4 0

3 years ago

Mars has a diameter of 6,792 kilometers. Approximate its diameter in miles. Round your answer to the nearest tenth of a mile.

RoseWind [281]

4220.3 miles is the answer you are looking for

6 0

3 years ago

From a group of 8 volunteers, including Andrew and Karen, 4 people are to be selected at random to organize a charity event. Wha

igor_vitrenko [27]

Answer:

The probability that Andrew will be among the 4 volunteers selected and Karen will not is 2/7.

Step-by-step explanation:

From the given information it is clear that

The total number of volunteers, including Andrew and Karen = 8

The total number of volunteers, excluding Andrew and Karen = 8-2 = 6

We need to find the probability that Andrew will be among the 4 volunteers selected and Karen will not.

Total number of ways of selecting r volunteers from n volunteers is

$^nC_r=\frac{n!}{r!(n-r)!}$

Total number of ways of selecting 4 volunteers from 8 volunteers is

$\text{Total outcomes}=^8C_4=70$

Total number of ways of selecting 4 volunteers from 8 volunteers, so that Andrew will be among the 4 volunteers selected and Karen will not is

$\text{Favorable outcomes}=^1C_1\times ^6C_3=1\times 20=20$

The probability that Andrew will be among the 4 volunteers selected and Karen will not is

$P=\frac{\text{Favorable outcomes}}{\text{Total outcomes}}$

$P=\frac{20}{70}$

$P=\frac{2}{7}$

Therefore the probability that Andrew will be among the 4 volunteers selected and Karen will not is 2/7.

4 0

3 years ago