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Marizza181 [45]
3 years ago
11

Katie has a coin collection she keeps 7 of the coing in the box which is only 14% of her entire collection. What is the total nu

mber of coins in katie's collection
Mathematics
2 answers:
Mnenie [13.5K]3 years ago
5 0
14/100x = 7
0.14x = 7
X = 50 coins
mr Goodwill [35]3 years ago
3 0

Answer:

x= 50

Step-by-step explanation:

7/x = 14/100

14x = 700

x = 50

the reason behind my calculations were to get the same ratios and because they gave us percentage and the actual number, we can set them; 14 percent 14/100, however, the 7/x is because we don't know the 100 percent of the coins which is what we look for. Therefore, you cross multiply and get x.

I hope this helped

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A projectile is fired at 571 mi hr. How fast is that in meters per second to the nearest whole value? Use the conversion factor
ELEN [110]

Answer:

Consider this: factors that are the same that are in the numerator and denominator of a fraction cancel out.

e.g. 20/30 = [2(10)]/[3(10)] = 2/3      This is because the 10 present in the numerator exactly equals the 10 present in the denominator.

We can use the above principle for these types of problems!

If the projectile is fired at 422 mi/hr, and we want to convert this speed into m/s, we just need to go through the following process:

422 mi/hr * 1610m/1mi * 1hr/60min * 1min/60s = 189 m/s

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
PLEASE HELP FAST IF YOU ARE GOOD AT GEOMETRY:<br> AREA OF THESE SHAPES::
riadik2000 [5.3K]

Answer:

1)24  2)36  3)240

Step-by-step explanation:

1) area of triangle = 1/2b*h so 7*4=28  28/2=14

therefore area =24

2)9*4=36

3)15*16=240

3 0
3 years ago
Can you simplify -4X - X =
vlabodo [156]
Sure ... exactly the way you simplify "2 + 2" when it comes up in conversation ... perform the indicated operation wherever possible. In simplified form, -4x-x is written as. " -5x ".
3 0
3 years ago
*WILL MARK BRAINLIEST*
devlian [24]
A. multiply all the numbers together to find the possible outcomes

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There are 16 different jacket-shirt outfits Ardell have.

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hope this helps
6 0
3 years ago
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Answer the question above on the ixl tab, please.
kramer

Answer:

<h2>The answer is 10</h2>

Step-by-step explanation:

The formula for finding the combination of two given positive numbers is given by

<h3>_{n}C _{r} =  \frac{n!}{(n - r)!r!}</h3>

Where n and r are positive numbers

From the question we have

5 C 3

<u>Simplify</u>

That's

<h3>\binom{5}{3}  =  \frac{5!}{(5 - 3)!3!}  =  \frac{120}{2! \times 3  !}  \\  =  \frac{120}{2 \times 6}  \\  =  \frac{120}{12}</h3>

We have the final answer as

<h3>10</h3>

Hope this helps you

8 0
3 years ago
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