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3 years ago

15

Need help with the answer please and thank you

1 answer:

goldenfox [79]3 years ago

4 0

The pie grid is out of 100%. When you add 10%, 25% and 40% you get 75%. Subtract 100% and 75% and you get the answer of 25%.

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Write each percent as a fraction in simplest form and as a decimal to the nearest hundredth.

Vladimir79 [104]

$p\%=\dfrac{p}{100}=p:100$

$1.\ 30\%=\dfrac{30}{100}=\dfrac{3}{10}\\\\30\%=30:100=0.3\\\\2.\ 42\%=\dfrac{42}{100}=\dfrac{42:2}{100:2}=\dfrac{21}{50}\\\\42\%=42:100=0.42\\\\3.\ 18\%=\dfrac{18}{100}=\dfrac{18:2}{100:2}=\dfrac{9}{50}\\\\18\%=18:100=0.18$

$4.\ 35\%=\dfrac{35}{100}=\dfrac{35:5}{100:5}=\dfrac{7}{20}\\\\35\%=35:100=0.35\\\\5.\ 100\%=\dfrac{100}{100}=\dfrac{1}{1}=1\\\\100\%=100:100=1.0\\\\6.\ 29\%=\dfrac{29}{100}\\\\29\%=29:100=0.29$

$7.\ 56\%=\dfrac{56}{100}=\dfrac{56:4}{100:4}=\dfrac{14}{25}\\\\56\%=56:100=0.56\\\\8.\ 66\dfrac{2}{3}\%=\dfrac{66\cdot3+2}{3}\%=\dfrac{200}{3}\%\\\\\dfrac{200}{3}\%=\dfrac{\frac{200}{3}}{100}=\dfrac{200}{3\cdot100}=\dfrac{2}{3}\\\\\dfrac{200}{3}\%=\dfrac{200}{3}:100=66.666...:100=0.666...\approx0.67\\\\9.\ 25\%=\dfrac{25}{100}=\dfrac{25:25}{100:25}=\dfrac{1}{4}\\\\25\%=25:100=0.25$

4 0

3 years ago

ANSWER ASAP!!! Which table correctly lists the reasons to prove <1 = <3, given that AB intersects CD?

ser-zykov [4K]

Answer: B

Step-by-step explanation:

Took the test

8 0

3 years ago

Given that x is a hypergeometric random variable with Nequals10, nequals4, and requals6, complete parts a through d. a. Compu

sergey [27]

Answer:

a. 0.114

b. 0.005

c. 0.381

d. 0.00

Step-by-step explanation:

If x follows a hypergeometric distribution, the probability that x is equal to k is calculated as:

$P(x=k)=\frac{(rCk)*((N-r)C(n-k))}{NCn}$

Where k≤r and n-k≤N-r, Additionally:

$aCb=\frac{a!}{b!(a-b)!}$

So, replacing N by 10, n by 4 and r by 6, we get:

$P(x=k)=\frac{6Ck*((10-6)C(4-k))}{10C4}=\frac{6Ck*(4C(4-k))}{10C4}$

Then, the probability that x is equal to 1, P(x=1) is:

$P(x=1)=\frac{6C1*4C3}{10C4}=0.114$

The probability that x is equal to 0, P(x=0) is:

$P(x=0)=\frac{6C0*4C4}{10C4}=0.005$

The probability that x is equal to 3, P(x=3) is:

$P(x=3)=\frac{6C3*4C1}{10C4}=0.381$

Finally, in this case, x can take values from 0 to 4, so the probability that x is greater or equals to 5 is zero.

6 0

3 years ago

Write g(n)=2n(3-n)+5 in standard form

wolverine [178]

Standard form is an²+bn+c

expand
distribute
2n(3-n)+5=
2n(3)+2n(-n)+5=
6n-2n²+5=
-2n²+6n+5

g(n)=-2n²+6n+5 is standard form

6 0

4 years ago

If 7a+20b=28-b,what is the value of a in terms of b?

shusha [124]

7a+20b = 28-b
7a = 28-b-20b
7a = 28-21b
a= 28/7 - 21/7 b = 4-3b

6 0

3 years ago