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2 years ago

An orchard sells 4 pounds of apples for one dollar how much would 5 pounds of apples cost

Mathematics

1 answer:

Mrac [35]2 years ago

5 0

Answer:

1.25

Step-by-step explanation:4 pounds equal to 1 dollar so that means that each pound equals to 0.25 cents. SO, now you multiply 0.25 x 5= 1.25

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, Stevens glass holds 40 milliliters of milk fairs holds 2/5 as much milk. How much milk does fairs hold

Ad libitum [116K]

Fairs holds 16 milliliters.

40 * 0.4 = 16

5 0

3 years ago

in a fish tank 6/7 of the fish have a red stripe on them . if 18 of the fish have red stripes how many total fish are in the tan

Over [174]

Well, if 6/7 is 18, and how many is the 7/7 or a 1 whole(total)?

$\bf \begin{array}{ccll}
\stackrel{frational}{amount}&\stackrel{quantity}{amount}\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\frac{6}{7}&18\\\\
\frac{7}{7}&x
\end{array}\implies \cfrac{\frac{6}{7}}{\frac{7}{7}}=\cfrac{18}{x}\implies \cfrac{\frac{6}{7}}{1}=\cfrac{18}{x}\implies \cfrac{6}{7}=\cfrac{18}{x}
\\\\\\
x=\cfrac{7\cdot 18}{6}$

3 0

3 years ago

A middle school has 500 students. A survey was given to 50 randomly selected students, and 25 said they would buy fresh fruit in

kap26 [50]

Answer:

250

Step-by-step explanation:

If they asked 50 people, and 25 said yes, that means you could excpect about 50% to buy fresh fruit, or 250 out of 500. 500/2=250

4 0

3 years ago

Seventy five% or 15 of the students in Emily homeroom class are going on a field trip two thirds ot 12 of the students in santia

tekilochka [14]

Answer:

It's Emily's class. They have 20 students while Santiago's class has 18.

Step-by-step explanation:

75%=0.75=3/4. If 3/4=15, then 1/4 =15/3=5. So 4/4=5x4=20.

2/3=12. 1/3=12/2=6. 3/3=6x3=18.

6 0

3 years ago

SOME ONE HELP ME I REALLY NEED A SOLUTION FOR THIS PROBLEM WITH A CLEAR EXPLANATION

Sergio [31]

I'm going to answer this question using logic. Let x be Jenny's favorite number. We are going to square root this number, $\sqrt{x}$ and then multiply it by $\sqrt{2}$ .

This product needs to be an integer. How is that obtainable? To be an integer, we need to get rid of the nasty $\sqrt{2}$ part. The only way I can think of to get rid of it, is to multiply it by $\sqrt{2}$ , because $\sqrt{2} *\sqrt{2} = 2$ . Thus we have some conditions we need to fulfill when choosing Jenny's favorite number.

When we take the square root of Jenny's favorite number, x, it must contain a perfect square and a 2 in its prime factorization. For example, 8 works because 8 = 2 x 2 x 2, or 2² x 2.

You notice 8 is made up of a perfect square multiplied by 2. So when we take the square root of 8, we get:

$\sqrt{8} = \sqrt{2^{2}*2 } = \sqrt{ 2^{2} }*\sqrt{2} = \sqrt{4} *\sqrt{2} = 2*\sqrt{2}$

So 8 is the same thing as $2\sqrt{2}$

So when we multiply this by $\sqrt{2}$ , we will get an integer! So as long as Jenny's favorite number consists of a perfect square and two in its prime factorization, we will have an integer!

So possible choices are: 2,8,18.

Why does 18 work? Because $\sqrt{18} = \sqrt{9}* \sqrt{2} = 3\sqrt{2}$

When we multiply this by $\sqrt{2}$ , we get 6, which is an integer.

b) Suppose instead of multiplying by $\sqrt{2}$ , we divided by $\sqrt{2}$ . Is the resulting quotient still an integer?

YES, because we can get rid of the $\sqrt{2}$ part by dividing by $\sqrt{2}$ as well. This leaves only the "perfect square" part left in our square root, and obviously a perfect square is an integer when we square root it.

I hope that made sense! (⌐■_■)

3 0

3 years ago