can somebody please help cannot understand this Question

Answer:

72

Step-by-step explanation:

162= 4x+8+6x-6

160=10x

x=16

4(16)+8== 72

Answer:

$1.00

Step-by-step explanation:

The sales price of the items sold by the 6 friends given the total amount made is $1.40.

In order to determine the sales price, divide the total amount made by the total amount of the items sold

Sales price = $25.20 / (6 x 3) = $1.40

To learn more about division, please check: https://brainly.com/question/13281206

Step-by-step explanation:

2x + x+4+x = 180

4x = 176

x = 44

A 88

B 48

C 44

Step-by-step explanation:

Given

Alec has a 95% chance of passing

Joe has a 25% chance of passing

(a)Probability of passing both is

[tex]P=0.95\times 0.25=0.2375[/tex]

(b)Probability of both failing

[tex]P=(1-0.95)\cdot (1-0.25)=0.05\times 0.75\\P=0.0375[/tex]

(c)Joe Passes and Alec fails

[tex]P=(1-0.95)\cdot 0.25=0.05\times 0.25\\P=0.0125[/tex]

(d) Alec passes and Joe fails

[tex]P=0.95\times (1-0.25)=0.95\times 0.75\\P=0.7125[/tex]

Answer:

D] 5.4 units

Step-by-step explanation:

explanation is in the picture.

Answer:

here

Step-by-step explanation:

Solving a quadratic equation, it is found that your opponent has 5.08 seconds to react before the ball hits the ground on the other side of the net.

It is given by:

[tex]h(t) = -5t^2 + v_0t + h_0[/tex]

In which:

You hit a tennis ball with an initial vertical velocity of 25 m/s. The ball leaves the tennis racket 2 meters above the ground, hence [tex]v_0 = 25, h_0 = 2[/tex].

Then, the equation is:

[tex]h(t) = -5t^2 + 25t + 2[/tex]

It hits the ground when h(t) = 0, hence:

[tex]-5t^2 + 25t + 2 = 0[/tex]

The solutions are h = 5.08 and h = -0.08.

Since time is a positive measure, your opponent has 5.08 seconds to react before the ball hits the ground on the other side of the net.

More can be learned about quadratic equations at https://brainly.com/question/24737967

Answer:

x=135

Step-by-step explanation:

The two angles are supplementary, meaning they both add up to 180°.

So to find the value of one angle, simply subtract 50 from 180.

180-50=130

So now we know that 130 is equal to the expression.

x-5=130

Add 5 to both sides.

x=135

Answer:

itd be the last one

Step-by-step explanation:

because of the process lol

Answer:

a) H0: μ= 16  against the claim Ha: μ≠ 16

b) H0 will be rejected if it does not lie in the interval  [15.934; 16.065 ]

c) 0.8531

Step-by-step explanation:

a) The null and alternate hypothesis are

H0: μ= 16  against the claim Ha: μ≠ 16

The test chosen is two sided because the cans have more or less content than 16 oz.

b) Here n = 9 , σ= 0.1 and α 0.05 and z∝/2 = ± 1.96

z∝/2 = x − µ/ σ/√n

z ∝/2= x-16/0.0333

± 1.96 *0.33= x-16

± 0.0653= x- 16

or x= 16± 0.0653

x=  15.934; 16.065

H0 will be rejected if it does not lie in the interval  [15.934; 16.065 ]

c) The probability can be computed by  transforming x into z

z= x-µ/ σ/√n

z= 15.934-16.1  /0.1/√9

z= [−4.95]

z2= x-µ/ σ/√n

z= 16.065-16.1 /0.1/√9

z2=[ −1.05]

P (15.934<x< 16.065 )= P (−4.95, −1.05)

                              =P ( z < −4.95 ) + P ( z > −1.05)

                               =  0+ 0.3531+0.5

                             = 0.8531

Answer: 4.5

Step-by-step explanation:

[tex]5(2x+1)=50\\\\2x+1=10\\\\2x+9\\\\x=\boxed{4.5}[/tex]

9514 1404 393

Answer:

  14.40 m

Step-by-step explanation:

A typical suburban home site in the US might have a width between 15 and 50 meters. So, the front of Bill's house is most likely to be about 14.4 m, of the choices offered.

Answer:

$47

Step-by-step explanation:

Given data

Cost= $50

Tax= 4%

Tip= 10%

Let us find the amount of the Tax

=4/100*50

=0.04*50

=$2

Let us find the amount of the Tip

=10/100*50

=0.1*50

=$5

Hence the total amount is

=50+2-5

=52-5

=$47

Answer:

ijhofhoiffho[hoi[hjkkhj

Step-by-step explanation:

e3gyqi3rqrqugrqugfugfufgfiohwefuohfewihuiu

Answer:

The answer is -0.828

Step-by-step explanation:

I took the quiz and i gt this question correct, hope it helps!

The r-value of the given data is 0.374.

The correlation coefficient, denoted as r, is a statistical measure that describes the strength and direction of the linear relationship between two variables.

It ranges between -1 and +1, where -1 indicates a perfect negative correlation (inverse relationship), +1 indicates a perfect positive correlation (direct relationship), and 0 indicates no correlation between the variables.

We have,

First, we need to find the correlation coefficient (r) of the given data.

We can use the following formula to do this:

r = [n∑(xy) - (∑x)(∑y)] / [√{n∑x² - (∑x)²} √{n∑y² - (∑y)²}]

where n is the number of data points, x, and y are the respective variables, and ∑ denotes the sum of the values.

Using the given data, we can calculate the values as follows:

n = 5

∑x = 39

∑y = 53

∑(xy) = 442

∑x^2 = 483

∑y^2 = 1249

Substituting these values into the formula, we get:

r = [5(442) - (39)(53)] / [√{5(483) - (39)^2} √{5(1249) - (53)²}]

r = [2210 - 2067] / [√(2415) √(5660)]

r = 143 / (61.898 75.245)

r = 0.374 (rounded to three decimal places)

Therefore,

The r-value of the given data is 0.374.

Learn more about correlation coefficient here:

#SPJ7

Answer:

Translation

Step-by-step explanation:

Vertical and horizontal translation

Answer:

125

Step-by-step explanation:

[tex]80\% \: of \: x = 100 \\ \\ 0.8x = 100 \\ \\ x = \frac{100}{0.8} \\ \\ x = 125[/tex]

Answer:

• 25%

• Drama movie

Step-by-step explanation:

• Total number of children

= 16 +12 +18 +20 +14

= 80

Percentage of children that voted for action movie

[tex] = \frac{no. \: of \: children \: that \: voted \: for \: action \: movie}{total \: number \: of \: children} \times 100\%[/tex]

[tex] = \frac{20}{80} \times 100\%[/tex]

[tex] =\textbf{25\%}[/tex]

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

• Total number of votes

= 30 +32 +36 +36 +26

= 160

20% of total votes

= 20% ×160

= 32 votes

Since Drama movie received 32 votes, it received 20% of the total votes.

Answer:

25π

Step-by-step explanation:

pi's symbol is π, which will be used sometimes to make it easier later

The circumference is equal to diameter multiplied by pi. (Diameter is the length across the circle, radius the center of the circle to an edge point aka. half the diameter, and circumference is the edge length aka. perimeter of the circle.)

We can then remove the pi off the 10, as the diameter multiplied by pi is the circumference, so the diameter is 10.

Half of 10 is 5, the radius.

The formula for area of a circle is radius squared times pi, remember easily by π r ^2

We can plug in the radius into the formula to get

π 5 ^2

And finish it by solving the square root to get

π 25

25π

Answer:

Green = 13.5 ft²

Blue = 42 in²

Step-by-step explanation:

Green: 6+3=9

9÷2=4.5

4.5x3=13.5

Blue: 8+13=21

21÷ 2=10.5

10.5x4=42

Answer:

80°

Step-by-step explanation:

In rhombus, opposite angles are equal. i.e <KET = <KIT

Triangle KET is isoceles, which means both parts of angle E are equal.

Angle E = 40 + 40

Angle E = 80

If angle E is 80 than Angle I is also 80.

Answer:

The test value is z = -1.31.

Step-by-step explanation:

The Eagle Ridge Contractors Association claims the average price of a home in their subdivision is $125,150.

This means that the null hypothesis is that the mean is this value, that is:

[tex]H_0: \mu = 125150[/tex]

The Eagle Ridge Home Owners Association is interested in knowing if the costs of homes for sale in this subdivision are actually lower than claimed.

This means that at the alternate hypotehsis we test that the mean is lower than that value, that is:

[tex]H_a: \mu < 125150[/tex]

The test statistic is:

[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.

125150 is tested at the null hypothesis:

This means that [tex]\mu = 125150[/tex]

Standard deviation of $7,350.

This means that [tex]\sigma = 7350[/tex]

A sample of 36 homes for sale in this subdivision had an average selling price of $123,550.

This means that [tex]n = 36, X = 123550[/tex]

Compute the test value.

[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

[tex]z = \frac{123550 - 125150}{\frac{7350}{\sqrt{36}}}[/tex]

[tex]z = -1.31[/tex]

The test value is z = -1.31.

Answer:

2y = 7

y = 3 1/2

Step-by-step explanation:

Answer:

90-35=55

x=55

Step-by-step explanation:

Answer:

x = 55

Step-by-step explanation:

x and 35 must = 90 degrees because of the Angle Addition Postulate. So if you subtract 90 and 35, you get x.

Answer:

he went on 14 rides.

Step-by-step explanation:

take your total, 38, subtract that by 10 (because you have to pay the admission fee) and you have 28 dollars spent on rides. each ride costs 2 dollars so divide 28 by 2 and you get 14.

Answer:

6.25 feet squared of fabric needed

Step-by-step explanation:

4:5 placemats:fabric

then

5:6.25

Answer:

y = 2/3x - 2

Step-by-step explanation:

If two lines are parallel to each other, they have the same slope.

The first line is y = 2/3x + 1. Its slope is 2/3. A line parallel to this one will also have a slope of 2/3.

Plug this value (2/3) into your standard point-slope equation of y = mx + b.

y = 2/3x + b

To find b, we want to plug in a value that we know is on this line: in this case, it is (3, 0). Plug in the x and y values into the x and y of the standard equation.

0 = 2/3(3) + b

To find b, multiply the slope and the input of x (3)

0 = 2 + b

Now, subtract 2 from both sides to isolate b.

-2 = b

Plug this into your standard equation.

y = 2/3x - 2

This equation is parallel to your given equation (y = 2/3x + 1) and contains point (3, 0)

Hope this helps!

Answer:

Answer B

Step-by-step explanation: