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Lorico [155]
3 years ago
12

Last week 14 students were given Cardinal Credits for good behavior. This week 22 students were given Cardinal Credits. What was

the percent increase? (Round to the nearest whole percent)
Mathematics
1 answer:
Dimas [21]3 years ago
5 0

Answer:

57\%

Step-by-step explanation:

Given: Number of students who were given Cardinal Credits last week for good behavior = 14

Number of students who were given Cardinal Credits this week for good behavior = 22

To find: percent increase in number of students who were given Cardinal Credits

Solution:

Increase in number of students = 22 - 14 = 8

Percent increase in number of students who were given Cardinal Credits = Increase in number of students / Number of students who were given Cardinal Credits last week for good behavior  × 100 =\frac{8}{14}\times 100=57.14\approx 57\%

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What is an expression containing variables,numbers, and operation symbols?
just olya [345]

an example would be: 9x+5m/2=24

because the variables are x and m

the numbers are 9, 5, 2, and 24

and the operation symbols are +, /, and =

8 0
3 years ago
A man whose height is 2.1 m casts a shadow that is 3.2 m in length. What is the approximate height of a building that casts a sh
Colt1911 [192]

Answer:

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2.1 divided by 3.2 =0.65625

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Hope This Helps!!!

6 0
3 years ago
Mike, David, Derek, and Chad are testing the speed of their sports cars. Who has the fastest sports car?
Virty [35]
We don’t exactly know because we have no info. If there is a picture please re-ask this question
6 0
2 years ago
Read 2 more answers
Consider the function f given by f(x)=x*(e^(-x^2)) for all real numbers x.
NISA [10]

Answer:

\frac{\sqrt{\pi}}{4}

Step-by-step explanation:

You are going to integrate the following function:

g(x)=x*f(x)=x*xe^{-x^2}=x^2e^{-x^2}  (1)

furthermore, you know that:

\int_0^{\infty}e^{-x^2}=\frac{\sqrt{\pi}}{2}

lets call to this integral, the integral Io.

for a general form of I you have In:

I_n=\int_0^{\infty}x^ne^{-ax^2}dx

furthermore you use the fact that:

I_n=-\frac{\partial I_{n-2}}{\partial a}

by using this last expression in an iterative way you obtain the following:

\int_0^{\infty}x^{2s}e^{-ax^2}dx=\frac{(2s-1)!!}{2^{s+1}a^s}\sqrt{\frac{\pi}{a}} (2)

with n=2s a even number

for s=1 you have n=2, that is, the function g(x). By using the equation (2) (with a = 1) you finally obtain:

\int_0^{\infty}x^2e^{-x^2}dx=\frac{(2(1)-1)!}{2^{1+1}(1^1)}\sqrt{\pi}=\frac{\sqrt{\pi}}{4}

5 0
2 years ago
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If you roll two number cubes ,what is the probability of their sum being 9 or higher?
bija089 [108]

Answer:

5/18

Step-by-step explanation:

When two cubes are rolled there are 36 possibilities

Each dice has 6 equally like outcomes so possibilities are

(1,1)  (1,2)          (1,3)          (1,4)         (1,5)         (1,6)

(2,1)  (2,2)  (2,3)  (2,4)  (2,5)  (2,6)

(3,1)  (3,2)  (3,3)  (3,4)  (3,5)  (3,6)

(4,1)  (4,2)  (4,3)  (4,4)  (4,5)  (4,6)

(5,1)  (5,2)  (5,3)  (5,4)  (5,5)  (5,6)

(6,1)  (6,2)  (6,3)  (6,4)  (6,5)  (6,6)

Now we look at the pair that has sum equal to 9

(3,6) (4,5) (5,4) (6,3) that has sum of 9

Probability of sum is 9 = \frac{4}{36}

we look at the pairs that has sum greater than 9

(4,6) (5,5)(5,6) (6,4)(6,5)(6,6)

Probability of sum greater than 9 = \frac{6}{36}

Probability of sum 9 or higher = P(sum 9) + P(greater than 9)

= \frac{4}{36}+\frac{6}{36}= \frac{10}{36}=\frac{5}{18}



4 0
3 years ago
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