Which expression is equivalent to 5(w+4) when w=9?
05(9)
9(5)
5(9)+ 4
O 5(9)+20

Answer:

a = 4

Step-by-step explanation:

Lets call a² the side a

Let's call b² the side with 3

The hypotenuse, the longest side and the opposite side from the 90° angle is c²

a² + b² = c²

a² + 3² = 5²

a² + 9 = 25

subtract 9 from both sides

a² = 16

sq root 16 = 4

a = 4

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

228 quarters in $57

2 quarters in 57 cents

Step-by-step explanation:

Answer:

108.

Step-by-step explanation:

"At this rate, ..." means we're to assume Nancy's score is proportional to the number of holes:

 score/18 = 24/4

Multiplying by 18, we get ...

 score = 18(24/4) = 18(6) = 108

Nancy can expect a score of 108 on 18 holes.

(if this isn't right, tell me and I will make sure to recheck my work :).

Answer: 72

Step-by-step explanation:

Answer:

By the Central Limit Theorem, the distribution of ¯ x is approximately normal with mean 187 and standard deviation 2.05.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes 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.

The lengths of adult males' hands are normally distributed with mean 187 mm and standard deviation is 7.1 mm.

This means that [tex]\mu = 187, \sigma = 7.1[/tex]

Suppose that 12 individuals are randomly chosen.

This means that [tex]n = 12, s = \frac{7.1}{\sqrt{12}} = 2.05[/tex]

What is the distribution of ¯ x?

By the Central Limit Theorem, the distribution of ¯ x is approximately normal with mean 187 and standard deviation 2.05.

Answer:

A. X-coordinate

Step-by-step explanation:

I calculated it logically

Answer:

I think it's x -coordinate

Answer:

peregrine falcon

Step-by-step explanation:

you convert the 61.6 feet to miles which is 0.01166667 miles. you multiply that by the seconds in an hour(3600)

so 0.01166667*3600 = 42 miles an hour 75>42

Answer:

2 hours

Step-by-step explanation:

Make a ratio. If 240 newspapers can be delivered in 3 hours, 160 newspapers can be delivered in how many hours.

240/160 = 3/x

Okay now, multiply 160 times 3 and that would equal 480. Next do 480 divided by 240 and you get 2. So the answer is 2 hours!

Hope this helped!! :)

Answer:

15x - 6/7    

Step-by-step explanation:

Answer:

I think A is the correct answer

Answer:

I'm guessing you mean -7 < -12 and if it's true and false, if so the answer would be false because -7 is larger than -12.

Step-by-step explanation:

I'm guessing you mean -7 < -12 and if it's true and false, if so the answer would be false because -7 is larger than -12.

(Tell me the question if this is incorrect. Thanks!!!)

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

Answer: no possible triangles

Step-by-step explanation:

Answer:

C. -1

Step-by-step explanation:

I calculated it logically

Answer:

$5.10

Step-by-step explanation:

$3.85+$1.25=$5.10

Answer:

If she only bought one pen and one pencil, $5.10

Step-by-step explanation:

Answer: 99.06cm

Step-by-step explanation:

Note that 1 inch = 2.54cm

Therefore, we'll convert the sides of the frame in inches to cm. This will be:

8 1/2 inch = 8.5 × 2.54cm = 21.59cm

11inches = 11 × 2.54cm = 27.94cm

Therefore, the perimeter of a rectangle will be:

= 2(length + width)

= 2(27.94 + 21.59)

= 2(49.53)

= 99.06cm

Answer:

3.1

Step-by-step explanation:

In order to solve for this expected value, you need to do:

(0*0.3)+(1*0.15)+(2*.27)+(3*20)+(4*.13)+(5*.10)+(6*.07)+(7*0.3)+(8*0.2)

Meaning that it is:

0+.15+.54+.6+.52+.5+.42+.21+.16

Which equals to: 3.1

Also: Feel free to correct my answer by any means, I feel like I got some parts wrong.

Answer:

The answer is, 3.1

Step-by-step explanation:

A probability distribution is a statistical function that describes all of the potential values and probabilities for a random variable within a particular range.

To find this predicted value, you must do the following:[tex](0*0.3)+(1*0.15)+(2*.27)+(3*20)+(4*.13)+(5*.10)+(6*.07)+(7*0.3)+(8*0.2)[/tex]

That is to say, it is:

[tex]0+.15+.54+.6+.52+.5+.42+.21+.16[/tex]

3.1 is the value of the random variable.

To know more about  probability distribution here, https://brainly.com/question/9385303

#SPJ2

Answer:

50%

Step-by-step explanation:

There are 2 cards greater than 5 , that is 6 and 7 , then

P( greater than 5 ) = [tex]\frac{2}{4}[/tex] = [tex]\frac{1}{2}[/tex] = 50%

Answer: Circle

Solve for area

A≈17.9

C Circumference

15

d

r

r

r

d

d

C

A

Using the formulas

A=πr2

C=2πr

Solving forA

A=C2

4π=152

4·π≈17.90493

Step-by-step explanation:

Answer:

90% confidence interval for the difference in true proportion of the two groups is (-0.0717, 0.0517).

Step-by-step explanation:

Before building the confidence interval, 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.

First group: Sample of 163, 13% has a second episode.

This means that:

[tex]p_1 = 0.13, s_1 = \sqrt{\frac{0.13*0.87}{163}} = 0.026[/tex]

Second group: Sample of 160, 14% has a second episode

This means that:

[tex]p_2 = 0.14, s_2 = \sqrt{\frac{0.14*0.86}{160}} = 0.027[/tex]

Distribution of the difference:

[tex]p = p_1 - p_2 = 0.13 - 0.14 = -0.01[/tex]

[tex]s = \sqrt{s_1^2+s_2^2} = \sqrt{0.026^2+0.027^2} = 0.0375[/tex]

Confidence interval:

The confidence interval is:

[tex]p \pm zs[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

90% confidence level

So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].

Lower bound:

[tex]p - 1.645s = -0.01 - 1.645*0.0375 = -0.0717[/tex]

Upper bound:

[tex]p + 1.645s = -0.01 + 1.645*0.0375 = 0.0517[/tex]

90% confidence interval for the difference in true proportion of the two groups is (-0.0717, 0.0517).

Answer:

c

Step-by-step explanation:

Answer:

X²-4x-5

5-×1=5-

5-1=4

so the Values 5 and 1

x²-x-2

2×1=2

2-1=1

the values is 2 and 1

(x-2)×(x+1)

so

x-5/(x-5)×(x+1)=2x-5/(x-2)×(x+1)

1=2x-5/x-2

x-2=2x-5

x=3

hopefully its helpful and correct

Answer:

d. (-2.8,-2.6)​

Step-by-step explanation:

The solution is whwere the lines intersect

d. (-2.8,-2.6)​

Answer:

D

Step-by-step explanation:

Answer:

[tex]\sqrt{74}\\[/tex]

Step-by-step explanation:

Use hypotenus formula

A^2+b^2=C^2

5^2+7^2=C^2

25+49=c^2

74=C^2

[tex]\sqrt{74}\\[/tex]