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3 years ago

15

What is the domain? what is the range? is it functional?

1 answer:

Sergeeva-Olga [200]3 years ago

4 0

Domain {-4, -2, 1, 2, 4, 5}
Range {-4, -3, -2, 1, 2, 4}

It is functional.

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Alexander has nickels, dimes, and quarters in the ratio of 2:1:8, if 40 of Alexander's coins are quarters, how many nickels and

ch4aika [34]

Answer:

He has 10 nickels and 5 dimes

Step-by-step explanation:

We can take advantage of the ratio by dividing 40 by 8, giving us that every 1 in the ratio = 5. So we can multiply 2 x 5 = 10 and 1 x 5 = 5.

Hope this Helps!

4 0

3 years ago

How do you do this problem?

sertanlavr [38]

2x2x2 = 8

How many 2s are there?

3 so the answer is 3

4 0

3 years ago

Read 2 more answers

I really need help!!!

Zigmanuir [339]

Answer:

$Pr = 6.67\%$

Step-by-step explanation:

Given

$n = 10$ i.e. 10 people

Required

Probability of being next to each other

First, we calculate the total possible arrangements (without any restriction)

$Total = n!$

$Total = 10!$

If the three are to be next to each other,

First, we arrange the three

$r_1 = 3!$

Now, the 3 will be seen as 1; so, we have a total of 8 people i.e. (1 + 7 others)

The arrangement is:

$r_2 =8!$

So, the total arrangement, when they have to be next to one another is:

$r = r_1 * r_2$

$r = 3! * 8!$

The probability is:

$Pr = \frac{r}{n}$

$Pr = \frac{3! * 8!}{10!}$

Expand

$Pr = \frac{3*2*1 * 8!}{10*9*8!}$

$Pr = \frac{3*2*1}{10*9}$

$Pr = \frac{6}{90}$

$Pr = 0.0667$

Express as percentage

$Pr = 0.0667 * 100\%$

$Pr = 6.67\%$

8 0

3 years ago

A cone has a volume of 5 cubic inches. What is the volume of a cylinder that the cone fits exactly inside of?

Pie

Answer:

15 $in^{3}$

Step-by-step explanation:

Given:

Volume of Cone= 5 $inch ^{3}$

Solution:

Formula:

Volume of Cone = $\frac{1}{3} \pi r^{2} h$

Volume of Cylinder= $\pi r^{2} h$

$\therefore$ We can say that

Volume of Cone = $\frac{1}{3} \times$ Volume of Cylinder

$\therefore$ Volume of cylinder = 3 $\times$ Volume of Cone

Now Substituting given data we get

Volume of Cylinder= 3 $\times$ 5

Volume of Cylinder= 15 $in^3$

3 0

3 years ago

Help me!!!!!!!!!!!!!

Brums [2.3K]

Number 1 is add 3
Number 2 is add 4
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Number 4 is add 7

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3 years ago