Please help me.........

Answer:

27

Step-by-step explanation:

6/10=12/20 because when you cross multiply, 120=120, so then you can do wither 6/10=x/45 and when you cross multiply you get 270=10x and 270/10=27.

Answer:

n=9

Step-by-step explanation:

7n = 68

- 5

7n = 63

n =9

Answer:

Today: Friday, 06 November 2020

Hour: 09.41 WIB (Indonesia)

_______________________________

7n + 5 = 68

7n = 68 - 5

7n = 63

n = 63/7

n = 9

Answer:

22

Step-by-step explanation:

Answer:

33

Step-by-step explanation:

Answer:

0.8809

Step-by-step explanation:

Given that:

The population proportion p = 4% = 4/100 = 0.04

Sample mean x = 16

The sample size n = 300

The sample proportion [tex]\hat p =\dfrac{x}{n}[/tex]

= 16/300

= 0.0533

∴

[tex]P(\hat p \leq 0.0533) = P\bigg ( \dfrac{\hat p - p}{\sqrt{\dfrac{P(1-P)}{n}}}\leq\dfrac{0.0533 - 0.04}{\sqrt{\dfrac{0.04(1-0.04)}{300}}}\bigg )[/tex]

[tex]P(\hat p \leq 0.0533) = P\bigg ( Z\leq\dfrac{0.0133}{\sqrt{\dfrac{0.04(0.96)}{300}}}\bigg )[/tex]

[tex]P(\hat p \leq 0.0533) = P\bigg ( Z\leq\dfrac{0.0133}{\sqrt{\dfrac{0.0384}{300}}}\bigg )[/tex]

[tex]P(\hat p \leq 0.0533) = P\bigg ( Z\leq\dfrac{0.0133}{\sqrt{1.28 \times 10^{-4}}}\bigg )[/tex]

[tex]P(\hat p \leq 0.0533) = P\bigg ( Z\leq\dfrac{0.0133}{0.0113}}\bigg )[/tex]

[tex]P(\hat p \leq 0.0533) = P\bigg ( Z\leq1.18}\bigg )[/tex]

From the z tables;

= 0.8809

OR

Let X be the random variation that follows a normal distribution;

Then;

population mean [tex]\mu[/tex] = n × p

population mean [tex]\mu[/tex] = 300 × 0.04

population mean [tex]\mu[/tex] = 12

The standard deviation [tex]\sigma = \sqrt{np(1-p)}[/tex]

The standard deviation  [tex]\sigma = \sqrt{300 \times 0.04(1-0.04)}[/tex]

The standard deviation [tex]\sigma = \sqrt{11.52}[/tex]

The standard deviation  [tex]\sigma = 3.39[/tex]

The z -score can be computed as:

[tex]z = \dfrac{x - \mu}{\sigma}[/tex]

[tex]z = \dfrac{16 -12}{3.39}[/tex]

[tex]z = \dfrac{4}{3.39}[/tex]

z = 1.18

The required probability is:

P(X ≤ 10) = Pr (z  ≤ 1.18)

= 0.8809

Answer: d or the last one

Step-by-step explanation:

The last one because she wants to lose 2 pounds per week and of x is the amount of weeks she does it for and 126 is the amount she already weighs, then the equation would be y=2x - 126

Answer:

A.

Step-by-step explanation:

That is a translation of 3 units left and 6 units down.

tom will have his key 10

Answer:

40,320.. took the test on USA test prep

Step-by-step explanation:

Answer:

y = 3x + 10

Step-by-step explanation:

Answer:

im pretty sure it is (0,5) or (10,0)

Step-by-step explanation:

Answer:

a

The 95% confidence interval is [tex] 0.2474 < p < 0.3188 [/tex]

b

  The result obtained does not contradict expectation

Step-by-step explanation:

From the question we are told that

   The number of green peas is  k =  438

   The number of yellow peas is u =  173

Generally the sample size is mathematically represented as

       [tex]n = k + u[/tex]

=>    [tex]n = 438 + 173[/tex]

=>    [tex]n = 611[/tex]

Generally the sample proportion for yellow peas is

      [tex]\^ p = \frac{u}{n}[/tex]

=>   [tex]\^ p = \frac{173}{611 }[/tex]

=>   [tex]\^ p = 0.2831[/tex]

From the question we are told the confidence level is  95% , hence the level of significance is    

      [tex]\alpha = (100 - 95 ) \%[/tex]

=>   [tex]\alpha = 0.05[/tex]

Generally from the normal distribution table the critical value  of  [tex]\frac{\alpha }{2}[/tex] is  

   [tex]Z_{\frac{\alpha }{2} } =  1.96[/tex]

Generally the margin of error is mathematically represented as  

     [tex]E =  Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p (1- \^ p)}{n} } [/tex]

=>  [tex]E =  1.96 * \sqrt{\frac{ 0.2831 (1- 0.2831)}{611} } [/tex]

=>  [tex]E =  0.0357 [/tex]

Generally 95% confidence interval is mathematically represented as  

      [tex]\^ p -E <  p <  \^ p +E[/tex]

=>     [tex] 0.2831  -0.0357 <p< 0.2831  + 0.0357[/tex]

=>     [tex] 0.2474 < p < 0.3188 [/tex]

From the question we are told that it was expected that 25% of the offspring peas will be yellow

   Now from the 95% confidence interval obtained we see that the expected sample proportion(25% ) falls within it so  it means that the result obtained does not contradict expectation

Answer:

2 2/12 1 5/12

2-1

1 2/12 - 5/12

7/12 bags of apples left

Step-by-step explanation:

Answer:

small=15 large=40

Step-by-step explanation:

x=large box

y=small box

55 = x + y

50x + 55y = 2825

50x + 55( 55 - x) = 2825

50x + 3025 - 55x = 2825

0 = 55x - 50 x + 2825 - 3025

0 = 5x - 200

200 = 5x

x=40

y = 15

Answer:

-2

Step-by-step explanation:

base on my stuck knowledge

Answer:

1.9 degrees above the normal temperture

Step-by-step explanation:

Normal temperture: 98.6 degrees Fahrenheit

100.5 - 98.6 =  1.9  

Answer:

-2

Step-by-step explanation:

It would be =

-2(-2 + 5) = -6

4 - 10 = -6

-10 and a positive four is a -6

Answer:

2.56

Step-by-step explanation:

8% of 32 is 2.56

Answer:

x = 4; y = 12

Step-by-step explanation:

The value of x and y is 4,12., the correct option is C.

A matrix is an array of numbers or expressions used in mathematics to solve a system of equations.

The matrix A is

[tex]\begin{pmatrix}1/2 & 1/4\\ 9& -3\end{pmatrix}[/tex]

The matrix Ax is

[tex]\begin{pmatrix}5 & 1/4\\ 0& -3\end{pmatrix}[/tex]

The matrix Ay is

[tex]\begin{pmatrix}1/2 & 5\\ 9& 0\end{pmatrix}[/tex]

The determinant for all the matrices is

|A| = -15/4

|Ax| = -15

|Ay| = -45

The value of x is (|Ax|) /(|A|) = -15 / (-15/4) = 4

The value of y is ( |Ay|)/(|A|) = -45 /(-15/4) = 12

Therefore, the value of x and y is 4,12., the correct option is C.

To know more about Matrices

https://brainly.com/question/11367104

#SPJ2

Answer:

The third one

Step-by-step explanation:

use process of elimination to find the answer

Answer:

-20

Step-by-step explanation:

-2 + -18 = -20

Answer: Jason likely MADE an error when working the equation in his notebook because ONLY THE Y-INTERCEPT MATCHES the slope and the y-intercept of the equation he wrote.

Step-by-step explanation:

Answer:

sorry if im wrong but im pretty sure -5/3

Step-by-step explanation:

Answer:

2/1

Step-by-step explanation:

A calculator showed me that this was the answer. I would give you the link but I would probably get deleted. I already got warned so yeah.

Hope this helps!

Answer:

414

Step-by-step explanation:

y=0.625x+1.75 is the equation for your problem.

Answer:

Kick the ball and run with the ball

Step-by-step explanation:

Answer:

70 men

Step-by-step explanation:

We can subtract to find the amount of men who took the survey.

150 - 80 = 70

Best of Luck!

Answer:

60 wpm

Step-by-step explanation:

900/15

Answer:

60

words is the answer.

Step-by-step explanation:

ok

Answer:

36

Step-by-step explanation:

Median is the Middle number in the sequence.

Hope this Helps!!

:D

Answer:

58.6 + 17.8 + x = 180

Step-by-step explanation:

hope this helps