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andre [41]
3 years ago
15

When would use a frequency in math?

Mathematics
1 answer:
Anon25 [30]3 years ago
7 0
When dealing with statistics (probabilities of events etc) and histograms
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The number of boys exceeded the number of girls by seven. There were 29 boys and girls. How many of each were there?
Elenna [48]

Answer:

Girls: 11

Boys: 18

Step-by-step explanation:

x: number of girls

x+x+7=29

2x=22

x=11

number of guys:

x+7=11+7=18

4 0
2 years ago
The number of users on a website has grown exponentially since its launch. After 2 months, there were 90 users. After 4 months,
grigory [225]

Answer:

10(3)^x

Step-by-step explanation:

The function contains the points (2,90) and (4,810). Use the general form y=abx to write two equations:

90=ab^2 and 810=ab^4

Solve each equation for a:

a=90/b^2 and a=810/b^4

Since a=a, set the other sides of the equations equal and solve for b.

90/b2=810/b4

Cross multiply, then divide and simplify as follows:

90b^4=810b^2

b^4/b^2=810/90

b^2=90

b^3

Now, use the value of b and the point (2,90) to find the value of a.

90=a(3^2)

a=10

So, substitute answers in original equation for a final answer of f(x)=10(3)^x.

8 0
3 years ago
a fish tank at a pet store has 8 zebra fish in how many different way s can nikki choose 3 zebra fish to buy
liraira [26]
This is 8C3.
8!/5!3!=8X7X6/3X2X1=56 ways
6 0
3 years ago
Read 2 more answers
In collin county there are approximately 834,000 people. If about 30,000 are under the age of 25 what fractional part are above
tresset_1 [31]
Do 30000 divided by 834000 times .1
3 0
3 years ago
Convert .667 into a fraction
Inga [223]
0.\underbrace{667}_{3}=\dfrac{667}{1\underbrace{000}_{3}}
3 0
3 years ago
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