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Colt1911 [192]
3 years ago
14

Plizzz helppp I don't know how to do it helpp​

Mathematics
2 answers:
strojnjashka [21]3 years ago
8 0

Answer:

Lol I'll help you. So for the 1st problem, you need to subtract 7x from 4x but if your looking for and answer then x=2. For the 2nd problem subtract 3x-5x and 7 + 9 which brings you to -2x - 16 which means you would have to find x in this problem which means x has to be a negative. The negative answer is x= -32 since a negative x a negative is a positive. Which brings you to 16-16 and then 0. For the third one, you need to change the problem. Turn it into 5x - x = 4 + 8 which brings you to 4x = 12 making x =3. and for number 4 you need do the same as we just did and do 11x - 6x - 3x and then do 20 - 6 which brings you to 2x = 14 which makes  x=7.

Step-by-step explanation:

Anuta_ua [19.1K]3 years ago
4 0
Oh yeah I guess you can get me some stuff to get me some food lol I love it
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PLEASE HELP WILL MARK BRAINLIEST
puteri [66]

Answer:

36

Step-by-step explanation:

There are 30 red marbles and the ratio of black to yellow is 4/5, so 4/5=orange/green=orange/30.

30 is 6 times 5, so black=6 times 4=24. There are 24 black marbles.

Total of black and yellow=24+30=54.

40% of the marbles are green so 60% are black/yellow. Also 60% is 54 marbles.

60% is 60/100=3/5 so 3/5 of the total is 54 marbles, therefore 1/5 is 54/3=18 and 2/5 is the number of red marbles=2 times 18=36 red marbles.

to be honest i can't think of anything original for the visual thing, but i think the pi chart from the person above me would work well

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3 years ago
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ivanzaharov [21]
I believe AFE is 0°
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7 0
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12y^2+12y-3y^3 = 124-(y+5)
stepladder [879]

Answer:

{ \tt{12 {y}^{2}  + 12y - 3 {y}^{3}  = 124 - (y + 5)}} \\ 3 {y}^{3}  - 12 {y}^{2}  - 12y =  - 124 + (y + 5) \\  {3y}^{3}  - 12 {y}^{2}  - 12y =  - 124 + y + 5 \\ { \tt{3 {y}^{3} -  {12y}^{2}  - 11y + 119 = 0 }}

7 0
3 years ago
Suppose a sample of 200 entrepreneurs will be taken to learn about the most important qualities of entrepreneurs. Show the sampl
galben [10]

The missing part of the question is highlighted in bold format

The Wall Street Journal reported that the age at first startup for 90% of entrepreneurs was 29 years of age or less and the age at first startup for 10% of entrepreneurs was 30 years of age or more.

Suppose a sample of 200 entrepreneurs will be taken to learn about the most important qualities of entrepreneurs. Show the sampling distribution of p where p is the sample proportion of entrepreneurs whose first startup was at 29 years of age or less. If required, round your answers to four decimal places. np = n(1-p) = E(p) = σ(p) = (b) Suppose a sample of 200 entrepreneurs will be taken to learn about the most important qualities of entrepreneurs. Show the sampling distribution of p where p is now the sample proportion of entrepreneurs whose first startup was at 30 years of age or more. If required, round your answers to four decimal places.

Answer:

(a)

np = 180

n(1-p) = 20

E(p) = p = 0.9

σ(p) = 0.0212

(b)

np =  20

n(1 - p) = 180

E(p) = p = 0.1

σ(p) = 0.0212

Step-by-step explanation:

From the given information:

Let consider p to be the sample proportion of entrepreneurs whose first startup was at 29 years of age or less

So;

Given that :

p = 90%    i.e  p = 0.9

sample size n = 200

Then;

np = 200 × 0.9 = 180

n(1-p) = 200 ( 1 - 0.9)

= 200 (0.1)

= 20

Since np and n(1-p) are > 5 ; let assume that the data follows a normal distribution ;

Then:

The expected value of the sampling distribution of p =  E(p) = p = 0.9

Variance \sigma^2=\dfrac{p(1-p)}{n}

=\dfrac{0.9(1-0.9)}{200}

=\dfrac{0.9(0.1)}{200}

\mathbf{=4.5*10^{-4}}

The standard error of  σ(p) = \sqrt{\sigma ^2}

\mathbf{= \sqrt{4.5*10^{-4}}}

= 0.0212

(b)

Here ;

p is now the sample proportion of entrepreneurs whose first startup was at 30 years of age or more

p = 10%   i.e p = 0.1

sample size n = 200

Then;

np = 200 × 0.1 = 20

n(1 - p) = 200 (1 - 0.1 )  = 180

Since np and n(1-p) are > 5 ; let assume that the data follows a normal distribution ;

Then:

The Expected value of the sampling distribution of p = E(p) = p = 0.1

Variance \sigma^2=\dfrac{p(1-p)}{n}

=\dfrac{0.1(1-0.1)}{200}

=\dfrac{0.1(0.9)}{200}

\mathbf{=4.5*10^{-4}}

The standard error of  σ(p) = \sqrt{\sigma ^2}

\mathbf{= \sqrt{4.5*10^{-4}}}

= 0.0212

4 0
3 years ago
What is the simplified form of 1250 over 750?
Ivahew [28]
1250/250 = 5

750/250 = 3

5/3
7 0
3 years ago
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