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Damm [24]
3 years ago
14

40 packs of baseball cards for discounted price of 64 he sells 30 packs of baseball cards to A friend at cost much should he cha

rge
Mathematics
1 answer:
Trava [24]3 years ago
5 0
Answer: $48

Step by step:
1. 30 packs times 64 dollars is 1920
2. 1920 divided by 40 packs is 48
because if you pay 64 for 40 packs and your trying to figure out how much for 30 packs you will want to set it up like this:

\frac{40}{64}  \times  \frac{30}{x}
then you will use fishy method Google fish method in math if this doesn't help

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After John worked at a job for 10 years, his salary doubled. If he started at $x, his salary after 10 years is _____.
VARVARA [1.3K]
After ten years his salary is x2
6 0
3 years ago
Read 2 more answers
Please help me with 9 I really need it
MissTica

Answer:

605 boys

Step-by-step explanation:

If the ratio of boys to girls is 5:7

and there are 847 girls

we can plug this value into the ratio by doing something like:

5:7

= 5/7

= x/847

Because the ratio has to be the same, we can substitute x for the number of boys and solve by the cross method or whatever you guys call it.

5            x

---   x    ------

7          847

The x in the middle is just to show the direction you are multiplying.

the 5 is multiplied by the 847 and the 7 is multiplied by x.

847 * 5 = 4,235

4,235  divided by 7 is 605

605 is your answer.

The cross method can be used in most situations.

* is used to represent multiplication btw

4 0
2 years ago
5. Высота ромба равна 12 дм, что составляет 60% основания. Вычи-<br> сли площадь ромба
Alexandra [31]

Answer:

yes

Step-by-step explanation:

8 0
2 years ago
Ivan has cut 19 pieces of reinforcing bar​ (rebar) that are each 1.14 meters long. What is the total length of the rebar used fo
madreJ [45]

Answer:

The total length of rebar used is  21.66 meters.

Step-by-step explanation:

Given:

Ivan had cut a reinforcing bar in 19 pieces and length of each bar is 1.14 meters.

Number of pieces = 19

Length of each piece = 1.14

We need to find the total length of reinforcing bar.

To calculate the total length we will multiply number of pieces with length of each piece.

Hence,

Total length of rebar = Number of pieces × Length of each piece = 19\times1.14 = 21..66 m

Rounding to nearest hundred = 21.66 m

Hence the total length of reinforcing bar is 21.66 meters.

4 0
3 years ago
Hadley paddled a canoe 2/3 mile in 1/4 hour. How fast did Hadley paddle, in miles per hour?
irina [24]

Answer:

d

Step-by-step explanation:

Hadley paddled a canoe 2/3 mile in 1/4 hour. it will be 4 times more in an hour because 1/4*4=4/4=1. 2/3*4=8/3=2 2/3

8 0
2 years ago
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