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Marizza181 [45]
3 years ago
15

Need help, I did a similar problem and got it wrong soo...

Mathematics
2 answers:
Karo-lina-s [1.5K]3 years ago
8 0
Percent change = (new number - old number)/(old number) * 100

percent change = (54 - 48)/(48) * 100 = 6/48 * 100 = 0.125 * 100 = 12.5%
pav-90 [236]3 years ago
5 0
Hello!

You must use the percentage increase formula to solve this. The formula is:

[(Old Value - New Value / Old Value × 100]

Now use that formula to solve this:

48 - 54 / 48 × 100 = 12.5

The correct answer is J 12.5%.
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Dominics two daughters both want to take gymnastics this year. It cost 90 per month per child. How much dose dominic need to bud
CaHeK987 [17]

Answer:

$2,160 is what he need for both daughters for 1 year

Step-by-step explanation:

90 x 2 = 180

180 x 12 = 2,160

6 0
3 years ago
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
3 years ago
Read 2 more answers
T(1) = 9<br> t(n + 1) = 2 • t(n)
timurjin [86]

Answer:

t(1)3 = 914

t(s + 1) = 2 • t(s)

8 0
3 years ago
What is the volume of the following rectangular prism?
djverab [1.8K]

Answer:

I dont really know how to multiply fractions but i do know the step.

Step-by-step explanation:

Since 23/4 units square's formula is L × B. and the H is 4/3 units.All you needed to do to find the recrangular prism was to multiply 23/4 and 4/3 to get it.Then simplify it.Sorry i dont really know whether this helps but its what i know:'D

5 0
3 years ago
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5 The width of this rectangle is of the length. Find the
LenKa [72]

Answer:

4 in.

Step-by-step explanation:

8 0
3 years ago
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