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3 years ago

Trina's teacher asked her to explain the division problem 48 ÷ 12. Which choice gives the correct explanation?

Mathematics

2 answers:

Mariulka [41]3 years ago

8 0

Answer:

B.) 48 has to be broken up into 12 to get 4

Step-by-step explanation:

saw5 [17]3 years ago

7 0

Answer:

B). Break 48 into 4 groups of 12.

Step-by-step explanation:

Since 48 is divided by 12, you should break 48 into 12 different groups with 4 in each. All the other answer choices do not make sense because you cannot break 4 into 12 groups and get 48, same with 12.

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A certain rare form of cancer occurs in 37 children in a million, so its probability is 0.000037. In the city of Normalville th

sladkih [1.3K]

Answer:

Mean = 2.7

In a group of 74090 we would expect about 3 (rounding to nearest whole number) children with the rare form of cancer.

Step-by-step explanation:

We are given that the rate of cancer in children is 37 children in 1 million. So the probability of cancer in a child is P(C) = 0.000037

Poisson distribution is used to approximate the number of cases of diseases and we have to find what will be the mean number of cases for 74,090.

In simple words we have to find the expected number of children with cancer in a group of 74,090 children.

The mean value of expected value can be obtained by multiplying the probability with the sample size. So, in this case multiplying probability of child having a cancer with total group size will give us the expected or mean number of children in the group with cancer.

Mean = E(x) = P(C) * Group size

Mean = 0.000037 x 74090

Mean = 2.7

This means in a group of 74090 we would expect about 3 (rounding to nearest whole number) children with the rare form of cancer.

5 0

3 years ago

A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him?

levacccp [35]

It will last 24 ......

4 0

4 years ago

Read 2 more answers

PLEASE QUICK!!

valentina_108 [34]

Answer:

Step-by-step explanation:

So, when we dilate a triangle, it affects side measures.

So let's find it!

$10*0.4=4$

$30*0.4=12$

So, the sides of our new triangle is 4 and 12.

Let's find the area!

$\frac{4*12}{2} =24$

So, it is the first option! Hope this helps!

P.S. Stay Safe

3 0

4 years ago

Read 2 more answers

Which is bigger 2/5 or 3/4

sp2606 [1]

3/4 = 0.75
2/5 = 0.4

0.4 < 0.75

Therefore,

2/5 < 3/4

4 0

3 years ago

Need help please worth 50 points

Law Incorporation [45]

Here's how you simplify those. The rule for raising an exponent to an exponent is that you multiply them. The rule for dividing exponents with the same base is that you subtract the denomonator from the numerator. So let's simplify the first one, which is actually the most confusing.
$( \frac{ p^{5} }{ p^{-3} q^{-4} } )^{ \frac{1}{4} }$
Multiplying the exponents you get:
$( \frac{ p^{ \frac{5}{4} } }{ p^{- \frac{3}{4} } q^{-1} })$
Subtracting the denominator from the numerator between the common base of p you get this:
$\frac{ p^{ \frac{5}{4}- (-\frac{3}{4}) } }{ q^{-1} }$
Doing that math gives you
$\frac{ p^{2} }{ \frac{1}{q} }$ which equals $\frac{ p^{2} }{1} * \frac{q}{1}$ which is $p^{2}q$ , or the third one down.

The next one:
$( \frac{ p^{2} q^{7} }{ q^{4} } )^{ \frac{1}{2} }$
simplifies to:
$\frac{p* q^{ \frac{7}{2} } }{ q^{2} }$
and subtracting the power of the denominator from the power of the numerator gives you:
$p q^{ \frac{3}{2} }$ , which is the last choice.
$( p^{6}q \frac{3}{2})^{ \frac{1}{3} }$
simplifies to:
$( p^{6* \frac{1}{3} } )( q^{ \frac{3}{2}* \frac{1}{3} })$
which simplifies very nicely to:
$p^{2}q^{ \frac{1}{2} }$ , which is the first choice. The other one is found by process of elimination!

8 0

4 years ago