Ask question

Ask question

All categories

3 years ago

10

Colton scored a 70 on his first history test of the term and a 91 on the second history test. By what percent did Colton's score

increase?

1 answer:

Ilya [14]3 years ago

8 0

Answer:

20%

Step-by-step explanation:

You might be interested in

A family of 5 people attends a theme park. the purchase 2 adult tickets for $27.50 each and 3 student tickets for $12.50 each. i

pickupchik [31]

They should get $7.50, because you multiply the adults by two, then the children by three, and add it all together

8 0

4 years ago

Read 2 more answers

If n is a positive integer, how many 5-tuples of integers from 1 through n can be formed in which the elements of the 5-tuple ar

erma4kov [3.2K]

Answer:

$\frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{120}$

Step-by-step explanation:

Given

5 tuples implies that:

$n = 5$

$(h,i,j,k,m)$ implies that:

$r = 5$

Required

How many 5-tuples of integers $(h, i, j, k,m)$ are there such that $n\ge h\ge i\ge j\ge k\ge m\ge 1$

From the question, the order of the integers h, i, j, k and m does not matter. This implies that, we make use of combination to solve this problem.

Also considering that repetition is allowed: This implies that, a number can be repeated in more than 1 location

So, there are n + 4 items to make selection from

The selection becomes:

$^{n}C_r => ^{n + 4}C_5$

$^{n + 4}C_5 = \frac{(n+4)!}{(n+4-5)!5!}$

$^{n + 4}C_5 = \frac{(n+4)!}{(n-1)!5!}$

Expand the numerator

$^{n + 4}C_5 = \frac{(n+4)!(n+3)*(n+2)*(n+1)*n*(n-1)!}{(n-1)!5!}$

$^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{5!}$

$^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{5*4*3*2*1}$

$^{n + 4}C_5 = \frac{(n+4)*(n+3)*(n+2)*(n+1)*n}{120}$

<u><em>Solved</em></u>

6 0

3 years ago

The diameter of a ping pong ball is 4.0cm. find the length in kilometers of a row of 6.02×1023 ping pong balls.

Vikentia [17]

The length is determined by multiplying the number of balls with the diameter. The answer that would come out of this is in units of centimeters.

L = (6.02 x 10^23 balls)(4 cm/ball)
L = 2.408 x 10^24 cm

Then, we use the proper conversion factor to convert centimeter to kilometer.

L = (2.408 x 10^24 cm)(1 m/100 cm)(1 km/1000 m)
L = (2.408 x 10^24)(10^5)

The answer to this item is 2.408 x 10^19 km.

3 0

3 years ago

Read 2 more answers

What is x + 16 divided by 4 = 4x + 1 show ur work please

Sunny_sXe [5.5K]

2 10 x 4 is this helpful? at all?

<span />

4 0

3 years ago

If a tree diagram were drawn to determine the number of possible outcomes when choosing one of 2 shirts, one of 7 ties , and one

uysha [10]

2x7x4=56

brainliest G:)))))))

8 0

3 years ago

Read 2 more answers