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3 years ago

28 is 32% of what number?

Mathematics

2 answers:

natulia [17]3 years ago

8 0

87.5.................

vovikov84 [41]3 years ago

7 0

Here is your answer:

100%/x%=32/28

(100/x)*x=(32/28)*x

100=1.14285714286*x

(1.14285714286) to get x

100/1.14285714286=x

87.5=x

x=87.5

Hope this helps!

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Answer pleaseeeee 15 pts

Nataly_w [17]

Answer:

Step-by-step explanation:

89 + 95 = 184

89 x 15% increases the number of boys by 13 89 + 13 = 102

95 x 20% decreases the girls by 19 95 - 19 = 76

102 + 76 + 178

6 0

3 years ago

Place the following values in order from least to greatest: 3/4, 0.7, 4/5, 65.5%, 0.72

Tema [17]

Answer:

4/5, 3/4, 0.72, 0.70, %65.5

Step-by-step explanation:

65.5/100=0.655

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2 years ago

When twotwo basketball players are about to have a free-throw competition, they often draw names out of a hat to randomly selec

erica [24]

There are 2! = 2 ways to arrange the names of two basketball players in a hat.

Since, the are going to throw alphabetically, there is 1 way for the names to be arranged alphabetically.

Therefore, <span>the probability that they shoot free throws in alphabetical order is $\frac{1}{2} = 0.5$ </span>

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2 years ago

Evaluate the definite integral. <br> 1 x4(1 + 2x5)5 dx.

Nata [24]

Answer:

Step-by-step explanation:

Given the definite integral $\int\limits {\dfrac{x^4}{(1-2x^5)^5} } \, dx$ , we to evaluate it. Using integration by substitution method.

Let u = 1-2x⁵ ...1

du/dx = -10x⁴

dx = du/-10x⁴.... 2

Substitute equation 1 and 2 into the integral function and evaluate the resulting integral as shown;

$= \int\limits {\dfrac{x^4}{u^5} } \, \dfrac{du}{-10x^4}$

$= \dfrac{-1}{10} \int\limits {\dfrac{du}{u^5} } \\\\= \dfrac{-1}{10} \int\limits {{u^{-5}du } \\= \dfrac{-1}{10} [{\frac{u^{-5+1}}{-5+1}] \\\\= \dfrac{-1}{10} ({\frac{u^{-4}}{-4})\\\\$

$= \dfrac{u^{-4}}{40} \\\\\\= \dfrac{1}{40u^4} +C$

substitute u = 1-2x⁵ into the result

$= \dfrac{1}{40(1-2x^5)^4} +C$

Hence $\int\limits {\dfrac{x^4}{(1-2x^5)^5} } \, dx$ $= \dfrac{1}{40(1-2x^5)^4} +C$

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2 years ago

In 2007, the population of Ecuador was estimated at

swat32

Answer:

In 2012 , the population will be 15 million

Step-by-step explanation:

We start by setting up an exponential equation that defines the increase

P(t) = I(1 + r)^t

P(t) represents the present population = 15 million

I is the population in 2007 which is 13.8 million

r is 1.6% = 0.016

t is what we want to calculate

15 million = 13.8 million (1 + 0.016)^t

15/13.8 = (1.016)^t

1.09 = (1.016)^t

ln 1.09 = t ln 1.016

t = ln 1.09/ln 1.016

t = 5.429 which is approximately 5

So in 2007 + 5 = 2012, the population will be 15 million

8 0

3 years ago