Can you help me with this?

Answer:

Congruent:

B, E, F, G

The rest are supplementary.

Step-by-step explanation:

Mark me Brainliest?

Answer:

D

Step-by-step explanation:

Cos(Z) is made up of two lines The adjacent side and the hypotenuse.

The hypotenuse is the line that is opposite to  the right angle. In this case it is 37

The adjacent side is the other line making up the reference angle which is Z in this case. In this case it is 35

Cos(Z) = 35/37

Answer:

which one?

Step-by-step explanation:

Answer:

E=35 complete the 90

G=55 complete the 180

F=35 complete the 90

J=15 complete the 90

H = 45 complete the 180

I=45 complete the 90

M=120 complete the 180

K=15 complete the 180

L=75 complete the 90

Q=55 complete the 90

R=45 complete the 180

S=42 complete the 90

T=42 complete the 180

P=21 complete the 90

O=69 complete the 180

N=21 complete the 90

A and B and C = 60

U =69

D=42 complete the 180

hopefully i didnt miss any thing and do it correctly

Answer:

The test statistic is t = 2.33.

Step-by-step explanation:

Before testing the hypothesis, we need to understand the central limit theorem and subtraction of normal variables.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

Subtraction between normal variables:

When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.

Group1 (the intensive group) consisted of 15 students and resulted in an average grade of 49.55 with a standard deviation of 10

This means that:

[tex]\mu_1 = 49.55, s_1 = \frac{10}{\sqrt{15}} = 2.582[/tex]

Group 2 (the paced group) consisted of 17 students and resulted in an average grade of 42.29 with a standard deviation of 6.52.

This means that [tex]\mu_2 = 42.49, s_2 = \frac{6.52}{\sqrt{17}} = 1.581[/tex]

Test if intensive tutoring is more effective than paced tutoring:

At the null hypothesis, we test that it is the same, that is, the means are the same and the subtraction is 0. So

[tex]H_0: \mu_1 - \mu_2 = 0[/tex]

At the alternate hypothesis, we test that it is more effective, that is, the subtraction of the means is larger than 0. So

[tex]H_a: \mu_1 - \mu_2 > 0[/tex]

The test statistic is:

[tex]t = \frac{X - \mu}{s}[/tex]

In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis and s is the standard error.

0 is tested at the null hypothesis:

This means that [tex]\mu = 0[/tex]

From the two samples:

[tex]X = \mu_1 - \mu_2 = 49.55 - 42.49 = 7.06[/tex]

[tex]s = \sqrt{s_1^2+s_2^2} = \sqrt{2.582^2+1.581^2} = 3.03[/tex]

Test statistic:

[tex]t = \frac{X - \mu}{s}[/tex]

[tex]t = \frac{7.06 - 0}{3.03}[/tex]

[tex]t = 2.33[/tex]

The test statistic is t = 2.33.

Answer:

yes lul

Step-by-step explanation:

Answer:

1. x - 5 = 20

2. x + 2y = -6

3. 5x² = 12

Step-by-step explanation:

1. 5 less than x is 20

x - 5 = 20

2. the sum of x and twice y equals -6

x + 2y = -6

3. the product of 5 and x squared results in 12

5x² = 12

Answer:

240 million

Step-by-step explanation:

I took the application

Answer:

220

Step-by-step explanation:

Answer:

$100 left over

Step-by-step explanation:

well she starts off with $300 but then spends $125 so thats

300-125= 175 she made another $250 purchase so we subtract again then added $175

175+175-250 = $100

Answer:

im not gonna help u~ but i can talk to u~ <3

Step-by-step explanation:

Answer: Your question has some missing data attached below is the missing data

Answer : Mean value is Greater

Step-by-step explanation:

The relative value of the mean for original data set is greater

Relative value of median for original data set is lesser

This is simply because the The distribution is generally skewed to the right ( Right skewed )

Answer:Yes, the conditions for inference are met

Step-by-step explanation:

I took the test edge 2020

Answer:Yes, the conditions for inference are met.

Step-by-step explanation:

Answer:

2x+70° = 180°

=> 2x = 110°

=> x =55°

hope it helps you

Answer:

Let price of drink be x

price of tub y

You have 4x+2y=32.5 (1) and

x = y -3.5 (2)

Plug for x from (2) into (1):

4(y-3.5) + 2y = 32.5

4y -14 +2y = 32.5

6y = 14+32.5

y = (46.5)/6 = $7.75 the price of tub

x= y-3.5 = 7.75 - 3.5 = $4.75

Answer:

Option C (2.5, 1) is the right alternative.

Step-by-step explanation:

The given points are:

A = (-1, 5) = (x₁, y₁)

B = (6, -3) = (x₂, y₂)

Now,

The midpoint on X-axis is:

= [tex]\frac{x_1+x_2}{2}[/tex]

= [tex]\frac{-1+6}{2}[/tex]

= [tex]\frac{5}{2}[/tex]

= [tex]2.5[/tex]

The midpoint on Y-axis is:

= [tex]\frac{y_1+y_2}{2}[/tex]

= [tex]\frac{5+(-3)}{2}[/tex]

= [tex]\frac{5-3}{2}[/tex]

= [tex]\frac{2}{2}[/tex]

= [tex]1[/tex]

Thus the midpoint of AB is "2.5, 1".

Answer:

9

Step-by-step explanation:

if helpful please give me brainliest

Answer:

slope: m = 1

Step-by-step explanation:

Answer:

C I think sorry if wrong tho

Answer: Choice C

The probability of getting all heads is the same as the probability of getting all tails

=========================================================

Explanation:

H = heads

T = tails

In the first row, we have HHH to signify three heads. This shows up 1 time out of 8 outcomes total (each row is a different outcome). The probability of getting HHH is 1/8.

In the last row, TTT means we got three tails. Like with HHH, it only shows up once out of eight times, so the probability of getting TTT is 1/8 as well.

Therefore, both HHH and TTT have the same probability. This is because both sides of the coin have equal chances to land on. If the coin was more biased toward heads for example, then HHH and TTT would have different probabilities.

Answer:

the computer was 280, and the printer was 6 times that. do the math an you have ur answer

The cost of a printer is $240 and the cost of a computer is $1440.

Given that, the cost of both computer and printer is $1680.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Let the cost of printer be x.

Richard paid six times as much for his computer as he did for his printer.

Then, the cost of computer will be 6x

Now, 6x+x=1680

⇒ 7x=1680

⇒ x=1680/7

⇒ x=$240

So, 6x=$1440

Therefore, the cost of a printer is $240 and the cost of a computer is $1440.

To learn more about an equation visit:

https://brainly.com/question/14686792.

#SPJ2

9514 1404 393

Answer:

  (x, y) = (5, 3)

Step-by-step explanation:

We can use the second equation to substitute for y in the first.

  x = 17 -4(x -2)

  5x = 25 . . . . . . . . eliminate parentheses, add 4x

  x = 5

  y = 5 -2 = 3

The solution is (x, y) = (5, 3).

Answer:

1) [tex]\frac{2}{5}[/tex]

2) 49.225

3) [tex]\frac{7}{2}[/tex]

Step-by-step explanation:

1) To find the expected value of the dice we can use the following equation:

[tex]E(x)=x_{1}*P(x_{1})+x_{2}*P(x_{2})+...+x_{n}*P(x_{n})[/tex]

So in our problem the values x will be: 1/1, 1/2, 1/3, 1/4, 1/5 and 1/6 and the probavility for all values is 1/6 so the expected values will be:[tex]E(x)=(\frac{1}{1} *\frac{1}{6}) +(\frac{1}{2} *\frac{1}{6}) +(\frac{1}{3} *\frac{1}{6})+(\frac{1}{4} *\frac{1}{6})+(\frac{1}{5} *\frac{1}{6})+(\frac{1}{6} *\frac{1}{6})[/tex]

[tex]E(x)=0.167+0.083+0.056+0.042+0.033+0.028=0.409\approx \frac{2}{5}[/tex]

2) To find the variance of the expected values we can use the equation:

[tex]Var(x)=\frac{\sum_{i=1}^{n}(x_{i}-\overline{x})^{2} }{n}[/tex]

So for our problem will be:

[tex]Var(x)=\frac{(3-10.5)^2+(4-10.5)^2+(17-10.5)^2+(18-10.5)^2}{4}[/tex]

[tex]Var(x)=\frac{56.25+42.25+42.25+56.25}{4}[/tex][tex]Var(x)=\frac{196.9}{4}=49.225[/tex]

3) To find the expected value of the dice we can use the following equation:

[tex]E(x)=x_{1}*P(x_{1})+x_{2}*P(x_{2})+...+x_{n}*P(x_{n})[/tex]

So in our problem the values x will be: 1, 2, 3, 4, 5 and 6 and the probavility for all values is 1/6 so the expected values will be:[tex]E(x)=(1*\frac{1}{6}) +(2 *\frac{1}{6}) +(3 *\frac{1}{6})+(4 *\frac{1}{6})+(5 *\frac{1}{6})+(6 *\frac{1}{6})[/tex]

[tex]E(x)=0.17+0.33+0.5+0.67+0.83+1=3.5\approx \frac{7}{2}[/tex]

Answer:

its d

Step-by-step explanation:

I've taken this quiz before

Answer:

0.3L

Step-by-step explanation:

1000mL = 1L

300mL = 0.3L

Answer:

$160

Step-by-step explanation:

P = 15h + c

takes 8 hours and $40 in materials

P = 15(8) + 40

P = 120 + 40

P = 160

Answer:

160

Step-by-step explanation:

PEMDAS 15(8) + 40 = 160

Answer:

4:50 PM

Step-by-step explanation:

I hope it helps you

Answer:

$40.50

Step-by-step explanation:

Create a proportion using the cost in the numerator and number of tickets in the denominator.

[tex]\frac{18}{4} =\frac{x}{9}[/tex]

cross multiply

162=4x

divide by 4 on both sides

x=40.5

$40.50

$40.50

Step-by-step explanation:

4×2=8 tickets

18×2= 36 dollars

1/4 of 18 dollars is 4.5

so 36+4.5= $40.50

This could be wrong-