If f(x) = 2x - 10, what is f(4)?
O A. -18
B. 8.
C. - 2
D. 2

Answer:

This could be correct in the case and only if k would equal 24.5 so only in that case

Step-by-step explanation:

Answer:

The denominators are not equal.

Step-by-step explanation:

Answer:

-8x-16+2x-2

-4x = 18

x= -4.5 or -4 1/2

Step-by-step explanation:

Answer:

840 students

Step-by-step explanation:

0.6 * 1400 = 840 students

Answer:

840

Step-by-step explanation:

60% of 1400 is 840

Answer: p = 20

Step-by-step explanation: 5 x 20 = 100

-zomba

Answer:

11

81

Step-by-step explanation:

x = 7y + 4

x + y = 92

Solve for x in the second equation

x = 92 - y

92 - y = x

Equate the 2 xs

92 - y = 7y + 4         Add y to both sides

92 = 7y+y + 4          Combine

92 = 8y +  4             Subtract 4 from both sides

88 = 8y                    Divide by 8

88/8 = y

y = 11

===========

x = 7y + 4

x = 77 +4

x = 81

Answer:

Step-by-step explanation:

It's essential that you use the symbol " ^ " to indicate exponentiation.

Expanding f(x) = (x + 14)^2 results in x^2 + 28x + 196 (which is in standard form)

Answer:

112 rooms

Step-by-step explanation:

Simply if 10% of 140 is 14 20% of 140 is 28. So then 28 substract 140 is 112

Answer:

volume = 13500 [tex]cm^{3}[/tex]

Step-by-step explanation:

For a given pyramid, its volume can be determined by:

volume of pyramid = [tex]\frac{lwh}{3}[/tex]

Where: l is the base length, w is the base width and h id the height of the pyramid.

For the given question, l 30 cm, w = 30 cm and h = 45 cm.

So that,

volume = [tex]\frac{30*30*45}{3}[/tex]

            = [tex]\frac{40500}{3}[/tex]

            = 13500

volume = 13500 [tex]cm^{3}[/tex]

The volume of the pyramid is 13500 [tex]cm^{3}[/tex].

The volume of the square-based pyramid is [tex]13500cm^3[/tex]

The volume of a pyramid is given by

[tex]V=\dfrac{Ah}{3}[/tex]

where

[tex]A=\text{area of the square base}\\h=\text{perpendicular height}[/tex]

The area of the square base, [tex]A[/tex], is calculated as follows

[tex]A=side^2\\=(30cm)^2\\=900cm^2[/tex]

substitute the value of [tex]A[/tex], and [tex]h[/tex] ([tex]45cm[/tex]) into the volume formula to calculate the pyramid's volume

[tex]V=\dfrac{Ah}{3}\\\\=\dfrac{900\times 45}{3}\\\\=13500cm^3[/tex]

Therefore, the volume of the pyramid is [tex]13500cm^3[/tex]

Learn more about volume of pyramids here: https://brainly.com/question/1260835

Answer:

Step-by-step explanation:

Five fish equals two bread, and two bread equals two bananas (plus however many oranges), therefore he can get two bananas.

Answer:

sorry i don't know

Step-by-step explanation:

9514 1404 393

Answer:

  (c)  y = 2x-1 and y = 2x-1

Step-by-step explanation:

A system of equations in which both equations describe the same line will have infinitely many solutions (all points on that line).

The same line is (obviously) described by the (identical) equations ...

  y = 2x-1 and y = 2x-1

Answer:

4 Shirts

Step-by-step explanation:

Answer:

Bradley  can buy 4 t-shirts.

-------------------------------------------------------------------------------------------------------------- WORK~

110-49= 61

$61.00

61 divided by 13 equals 4.69230769231

He can't buy half a shirt so he can buy 4 shirts without going over budget.

Step-by-step explanation:

      May I have brainiest lease I'm trying to level up!

                             </3 PureBeauty

Answer:

A) t = -3

Step-by-step explanation:

-18 = 6t

divide both sides of the equation by 6

-18/6 = 6t/6

-18/6 = t

-3 = t

Answer:

So the answer is A-The mean doesn't change

Step-by-step explanation:

With the outliers the mean is 25, how?

well if we put down the numbers 15,23,24,25,26,27,35 and add them together  15+23+24+25+26+27+35 we get 175 now we have to divide by how many numbers are there 175/7=25. That is the mean WITH the outliers.

Now, WITHOUT the outliers. The outliers are 15 and 35. We know this because, there is a huge gap between 15 and 23, and 27 and 35. We basically do the same thing but without the outliers. 23+24+25+26+27=125 we divide by how many numbers are there 125/5 then we get 25.

Hey love! <3

Answer:

The correct answer is A. The mean doesn't change

Step-by-step explanation:

Since this is a dot plot, first we have to count up the total x-axis amount from the dot plots, then divide it by the numeral amounts (y-axis), then repeat this after removing the outlier from the dot plot.

Thus, the mean remaining the same.

Hope this could help! ~,~ Sincerely, Kelsey from Brainly

~ #LearnWithBrainly ~

Given Expression: 3y = -5x - 3

y = -x + 1

--------------------------

3y = -5x - 3

3(-x +1) = -5x - 3 ^ Substitution Property

-3x + 3 = -5x - 3 ^ Distributive Property

2x + 3 = -3 ^ Addition POE

2x = -6 ^ Subtraction POE

x = -3 - Answer

Answer: 1/18

Step-by-step explanation:

Answer:

the answer is 1/36

Step-by-step explanation:

because 1/6 times 1/6 is equal to 1/36

Answer:

125

hope it's helpful ❤❤❤❤

THANK YOU.

Answer:

Z = -1

Step-by-step explanation:

to find which value of Z makes the equation true substitute each value of Z into the equation.

Z = -1

7/6(-1) + 1/3 = -5/6

-5/6=-5/6

all other values of Z will not give u an equal statement

First you add 3x+x because they are like terms.

3x+x-7=10  

Your New Simplified Equation:

4x-7=10  

Now, you have to take out the -7 by adding a positive 7. Also you                          have to add +7 on the other side so add 7 to 10.

Your New Simplified Equation:

4x=17      Now, you divide both sides by 4.

Your New Simplified Equation:

x= 17/4 So, that's your answer :)

Answer:

?

(is there suppose to be more numbers?)

Step-by-step explanation:

Answer:

10 + 10k

Step-by-step explanation:

Answer:

1.) very large sample size

2.) 0.11326

3.) np and n(1-p) should be ≥ 10

4.) 0.010809

Step-by-step explanation:

Given :

p = 0.65 ; n = 500

2.)

P(x ≤ 300)

P(x =x) = nCx * p^x * (1 - p)^(n - x)

Using a binomial probability calculator :

P(x ≤ 300) = 0.11326

To justify why if it can be approximated using a normal distributon :

np and n(1-p) should be ≥ 10

np = 500 * 0.65 = 325

n(1-p) = 500(1 - 0.65) = 175

4.) probability using normal distribution estimate:

Mean, m = np = 500 * 0.65 = 325

Standard deviation, s = sqrt(n*p*(1-p)) = sqrt(500*0.65*(1 - 0.65)) = sqrt(113.75) = 10.665

x ≤ 300

Correction:

x = x + 0.5 = 300 - 0.5 = 300.5

P(x ≤ 300.5)

Zscore = (x - m) / s

Zscore = (300.5 - 325) / 10.665

Zscore = - 24.5 / 10.665

Zscore = - 2.297

P(Z ≤ - 2.297) = 0.010809

X can be modeled by a binomial distribution even though the sample was selected without replacement because the sample size is too large, and the probability that 300 or fewer high school students in the sample eat breakfast before going to school is 0.010809.

Given :

1) X can be modeled by a binomial distribution even though the sample was selected without replacement because the sample size is too large.

2) The formula for the binomial distribution is given by:

[tex]\rm P (x=x)= \; ^nC_x \times p^x \times (1-p)^{n-x}[/tex]

Now, substitute the known terms in the above formula.

[tex]\rm P (x\leq 300)= \; ^{500}C_x \times (0.65)^x \times (1-0.65)^{500-x}[/tex]

Simplify the above expression.

[tex]\rm P(x \leq 300)=0.11326[/tex]

3) Now, the value of np and n(1 - p) is given below:

np = 500 [tex]\times[/tex] 0.65 = 325

n(1 - p) = 500 [tex]\times[/tex] (1 - 0.65) = 175

X can be approximated by a Normal distribution because the value of np and n(1 - p) is greater than or equal to 10.

4)

First, determine the standard deviation.

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

[tex]\rm \sigma = \sqrt{500\times 0.65 \times (1-0.65)}[/tex]

[tex]\rm \sigma = 10.665[/tex]

Now, the z-score can be calculated by using the formula:

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

[tex]\rm z =\dfrac{300.5-325}{10.665}[/tex]

z = -2.297

So, the probability that 300 or fewer high school students in the sample eat breakfast before going to school is given by:

[tex]\rm P(Z\leq -2.297) = 0.010809[/tex]

For more information, refer to the link given below:

https://brainly.com/question/795909