Find the value of x and y in the parallelogram below.

Answer:

Step-by-step explanation:

Joseph : y = 25x + 15

Molly: y = 25x + 25

Joseph: y = 25(4)+ 15= 100+ 15= 115

Molly: y = 25(4)+ 25= 100+25= 125

Answer:

I hope this helps! <:

Step-by-step explanation:

The start is 15 and 25 so you keep on adding 25 to each of them, let's start with 15, 15+25=40 and 40 plus 25 is 65 and 65+25 is 90 the last one is 90+25= 115, now let's move on to 25. 25+25= 50 and the next one is 50+25=75 and then 75+25=100 and 100+25= 125.

Answer:

$21

Step-by-step explanation:

Take 40 percent of 35:

35(0.4) = 14

$14 has been taken off the original price:

35 - 14 = 21

And we have our final answer.

Answer:

21

Step-by-step explanation:

$35x40%= $14

$35-$14= $21

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

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

If I get this worng I'm sorry

Brainleist will be appreciated, if not that's ok

Sorry that my spelling is relly bad

Anyway, hope this helps :D

Answer:

the nominal interest rate is the periodic interest rate.

it  is the periodic interest rate times the number of periods per year.

Answer:

Null hypothesis:[tex]p\leq 0.3[/tex]  

Alternative hypothesis:[tex]p > 0.3[/tex]  

Critical value: [tex] z_{\alpha/2}= 1.64[/tex]

Test statistic: [tex]z=\frac{0.462 -0.3}{\sqrt{\frac{0.3(1-0.3)}{65}}}=2.85[/tex]  

For this case the calculated value is higher than the critical value so then we can reject the null hypothesis. And we can conclude that the true proportion of cars with emissions systems which failed to meet pollution control guidelines for this case is significantly higher than 0.30 or 30%

Step-by-step explanation:

Information given

n=65 represent the random sample taken

X=30 represent the number of cars with emissions systems which failed to meet pollution control guidelines

[tex]\hat p=\frac{30}{65}=0.462[/tex] estimated proportion of cars with emissions systems which failed to meet pollution control guidelines

[tex]p_o=0.30[/tex] is the value to verify

[tex]\alpha=0.05[/tex] represent the significance level

z would represent the statistic

[tex]p_v[/tex] represent the p value

Hypothesis to test

We want to verify if the true proportion for this case is higher than 0.3 or no, the system of hypothesis are:  

Null hypothesis:[tex]p\leq 0.3[/tex]  

Alternative hypothesis:[tex]p > 0.3[/tex]  

The statistic for this case would be:

[tex]z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}[/tex] (1)  

Replacing the info we got:

[tex]z=\frac{0.462 -0.3}{\sqrt{\frac{0.3(1-0.3)}{65}}}=2.85[/tex]  

The critical value for this case would be taking in count the significance level in the right tail:

[tex] z_{\alpha/2}= 1.64[/tex]

For this case the calculated value is higher than the critical value so then we can reject the null hypothesis. And we can conclude that the true proportion of cars with emissions systems which failed to meet pollution control guidelines for this case is significantly higher than 0.30 or 30%

Answer:

I couldn't find the link you wanted me to click.

Anyway the Pyramid Volume Formula is

Volume= (Area of the Base * Height) ÷ 3

It's hard to determine the volume because I can't tell the dimensions from the graphic.

I'd guess the answer to question 4 is "A" means area of the base

Step-by-step explanation:

Step-by-step explanation:

In the given question, the study was performed to analyse the effect of eating dark chocolate on the person with hypertension or increased blood pressure.

a) The biasness in the experiment could be that the funding for the study has been provided with a Private Company which mainly aims at selling their product.

b) The research is reasonable as it has been proved that eating a small amount of Dark chocolate can help cardiovascular disease like hypertension or increased blood pressure.

Answer:

k=4

Step-by-step explanation:

y=3(1)-1

y=2

2=-2x+k

2=-2(1)+k

2=-2+k

4=k

Answer:

k = 4

Step-by-step explanation:

y = 3x -1

y = -2x+k

Set the two equations equal

3x -1 = -2x+k

Combine like terms

Add 2x to each side

3x+2x -1 =-2x+2x +k

5x - 1 = k

We know they are equal when x= 1

Let x=1

5*1 -1= k

5 -1= k

4 = k

Answer:

150(10s + h)

Step-by-step explanation:

We need to write an expression for the total items they shipped.

Let each skateboard be s.

Let each helmets be h.

The factory ships 100 boxes with 15 skateboards in each box. That is:

100 * (15 * s) = 1500s

The factory ships 10 boxes with 15 helmets in each box. That is:

10 * (15 * h) = 150h

The total number of items shipped is therefore:

1500s + 150h = 150(10s + h)

This expression represents the total number of items shipped.

Answer:

x =20

Step-by-step explanation:

7x- 99 = 2x+1 (  vertically opposite angles)

7x - 2x = 1 +99

5x = 100

x =100/5

x =20

hope it helps

Answer:

[tex]r=\frac{-a+p}{a+p}[/tex]

Step-by-step explanation:

[tex]-pr+p=ar+a[/tex]

[tex]-ar-pr+p=a[/tex]

[tex]-ar-pr=a-p[/tex]

[tex]r(-a-p)=a-p[/tex]

[tex]r=\frac{-a+p}{a+p}[/tex]

Answer:

[tex]r = \frac{p - a}{(p + a)} [/tex]

Step-by-step explanation:

[tex]p = \frac{a(1 + r)}{(1 - r)} \\ p(1 - r) = a(1 + r) \\ p - pr = a + ar \\ p - a = pr + ar \\ p - a = r(p + a) \\ \frac{p - a}{(p + a)} = \frac{r(p + a)}{(p + a)} \\ \frac{p - a}{(p + a)} = r[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

Step-by-step explanation:

Hello!

X₁: speed of a motorcycle at a certain intersection.

n₁= 135

X[bar]₁= 33.99 km/h

S₁= 4.02 km/h

X₂: speed of a car at a certain intersection.

n₂= 42 cars

X[bar]₂= 26.56 km/h

S₂= 2.45 km/h

Assuming

X₁~N(μ₁; σ₁²)

X₂~N(μ₂; σ₂²)

and σ₁² = σ₂²

A 90% confidence interval for the difference between the mean speeds, in kilometers per hour, of motorcycles and cars at this intersection is ________.

The parameter of interest is μ₁-μ₂

(X[bar]₁-X[bar]₂)±[tex]t_{n_1+n_2-2}[/tex] * [tex]Sa\sqrt{\frac{1}{n_1} +\frac{1}{n_2} }[/tex]

[tex]t_{n_1+n_2-2;1-\alpha /2}= t_{175; 0.95}= 1.654[/tex]

[tex]Sa= \sqrt{\frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2} } = \sqrt{\frac{134*16.1604+41*6.0025}{135+42-2} } = 3.71[/tex]

[(33.99-26.56) ± 1.654 *([tex]3.71*\sqrt{\frac{1}{135} +\frac{1}{42} }[/tex])]

[6.345; 8.514]= [6.35; 8.51]km/h

Construct the 98% confidence interval for the difference μ₁-μ₂ when X[bar]₁= 475.12, S₁= 43.48, X[bar]₂= 321.34, S₂= 21.60, n₁= 12, n₂= 15

[tex]t_{n_1+n_2-2;1-\alpha /2}= t_{25; 0.99}= 2.485[/tex]

[tex]Sa= \sqrt{\frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2} } = \sqrt{\frac{11*(43.48)^2+14*(21.60)^2}{12+15-2} } = 33.06[/tex]

[(475.12-321.34) ± 2.485 *([tex]33.06*\sqrt{\frac{1}{12} +\frac{1}{15} }[/tex])]

[121.96; 185.60]

I hope this helps!

Answer:

(x+7)^2+(y-8)^2=1

(x-x value of center)^2+(y-y value of center)^2=radius

Answer:

(x + 7)² + (y - 8)² = 1

Step-by-step explanation:

(x - h)² + (y - k)² = r²

h = - 7, k = 8, r = 1

(x -(-7))² + (y - 8)² = 1²

(x + 7)² + (y - 8)² = 1

Question:

A solar power company is trying to correlate the total possible hours of daylight (simply the time from sunrise to sunset) on a given day to the production from solar panels on a residential unit. They created a scatter plot for one such unit over the span of five months. The scatter plot is shown below. The equation line of best fit for this bivariate data set was: y = 2.26x + 20.01

How many kilowatt hours would the model predict on a day that has 14 hours of possible daylight?

Answer:

51.65 kilowatt hours

Step-by-step explanation:

We are given the equation line of best fit for this data as:

y = 2.26x + 20.01

On a day that has 14 hours of possible daylight, the model prediction will be calculated as follow:

Let x = 14 in the equation.

Therefore,

y = 2.26x + 20.01

y = 2.26(14) + 20.01

y = 31.64 + 20.01

y = 51.65

On a day that has 14 hours of daylight, the model would predict 51.65 kilowatt hours

Answer:

[tex]\dfrac{3}{2}[/tex]

Step-by-step explanation:

We are given 2 fractions.

1st fraction is Negative StartFraction 3 over 8

i.e.

[tex]-\dfrac{3}{8}[/tex]

2nd fraction is negative one-fourth

i.e.

[tex]-\dfrac{1}{4}[/tex]

We have to find the quotient when 1st fraction is divided by 2nd fraction.

Definition of quotient is given as:

Quotient is the result obtained when one number is divided by other number.

[tex]-\dfrac{3}{8} \div -\dfrac{1}{4} \text{ is to be calculated.}[/tex]

[tex]\div[/tex] is converted to [tex]\times[/tex] and the 2nd fraction is reversed i.e.

if the fraction is [tex]\frac{p}{q}[/tex] it becomes [tex]\frac{q}{p}[/tex] and the sign [tex]\div[/tex] is changed to [tex]\times[/tex].

Solving above:

[tex]-\dfrac{3}{8} \times -\dfrac{4}{1}\\ \text {Multiplication/Division of 2 negative number gives a positive number}\\\Rightarrow \dfrac{3}{2}[/tex]

So, the quotient is [tex]\frac{3}{2}[/tex].

Answer:

S, Z, F

Step-by-step explanation:

i know its not the question but its for anyone who found this and needs it for edge lol

Answer:

$2668.63

Step-by-step explanation:

If the average of 4 months is $5

Meaning the total sum for 4 months

4×5 =$20

If the average for the year was $1780.75​

It means the total sum for a year is;

$1780.75​×12 =$21369

This means the money received for the remaining 8 months is;

$21369-$20=$21349

Hence the average income for the remaining 8months is ;

The total amount for 8 months / 8;

$21349/8= $2668.625

$2668.63

Answer:

  108

Step-by-step explanation:

We can rewrite f(x+2) to make it easier to evaluate:

  f(x+2) = (6x +5)x -8

Since we want f(6), we want x+2 = 6, or x=4.

  f(6) = (6·4 +5)·4 -8 = 29·4 -8

  f(6) = 108

Answer:

[tex]t=\frac{25.3-24.5}{\frac{5.4}{\sqrt{40}}}=0.937[/tex]    

The degrees of freedom are given by:

[tex]df=n-1=40-1=39[/tex]  

And the p value would be given by:

[tex]p_v =P(t_{(39)}>0.937)=0.177[/tex]  

Step-by-step explanation:

Information given

[tex]\bar X=25.3[/tex] represent the sample mean

[tex]s=5.4[/tex] represent the sample standard deviation

[tex]n=40[/tex] sample size  

[tex]\mu_o =24.5[/tex] represent the value to verify

t would represent the statistic  

[tex]p_v[/tex] represent the p value

Hypothesis to test

We want to test if the true mean is higher than 24.5, the system of hypothesis would be:  

Null hypothesis:[tex]\mu \leq 24.5[/tex]  

Alternative hypothesis:[tex]\mu > 24.5[/tex]  

The statistic is given by:

[tex]t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}[/tex]  (1)  

Replacing the info given we got:

[tex]t=\frac{25.3-24.5}{\frac{5.4}{\sqrt{40}}}=0.937[/tex]    

The degrees of freedom are given by:

[tex]df=n-1=40-1=39[/tex]  

And the p value would be given by:

[tex]p_v =P(t_{(39)}>0.937)=0.177[/tex]  

Answer:

no.

Step-by-step explanation:

Answer: -2x-18

Step-by-step explanation:

Answer:

36.87

Step-by-step explanation:

The cosine of an angle in a right triangle is the length of the adjacent side divided by the length of the hypotenuse, which in this case is 4/5. Therefore, the measure of this angle is the arc cosine of 4/5, or about 36.87 degrees. Hope this helps!

Answer:

79.2° (First Option)

Step-by-step explanation:

To find mAB, recognize that the percents given for the pie chart can represent the percent area of the sector of the circle, the percent measure of the central angle that forms the sector, or the percent measure of the length of the arc.

The measure of an arc is equal to the measure of the central angle between the radii that form its endpoints. So, mAB=m∠AOB.

The measure of the central angle AOB that forms AB is 22 percent of the whole circle, or (0.22)360∘. So, mAB=0.22(360∘)=79.2∘

Therefore, the measure of arc AB

is 79.2∘.

The measure of the arc AB of a circle showing the different vitamins present in a health drink is 79.2 degrees.

The measure of an arc is always equivalent to the measure of the central angle between the radii that form its endpoints.

As the measure of an arc is always equivalent to the measure of the central angle between the radii that form its endpoints.

Thus [tex]m\angle{AOB}=\widehat{AB}[/tex].

First, find the measure of angle AOB.

Since the measure of angle AOB shows 22% of vitamins of the whole circle.

This means that the measure of angle AOB is 22% of 360 degrees.

Then we will get

[tex]m\angle{AOB}=\dfrac{22}{100}\times 360^{\circ}\\m\angle{AOB}=79.2^{\circ}[/tex]

Here the measure of angle AOB  is 79.2 degrees.

And since [tex]m\angle{AOB}=\widehat{AB}[/tex].

Therefore the measure of arc AB is 79.2 degrees.

That means option A [tex]79.2^{\circ}[/tex] is correct option.

Learn more about the measure of arc here- https://brainly.com/question/12555201

#SPJ2

Answer:

all even numbers

Step-by-step explanation:

Answer:

Any and all of the Even numbers are scale factors of two!

Answer:

b = 0

Step-by-step explanation:

Because the line passes through x values when y = 0, it means that the line is y = 0. The slope would be 0, and because we are given 2 coordinates we can determine that the y intercept would be at 0.

Answer:

c

Step-by-step explanation:

hope this helps i just had this question on edge 2020

Answer:

[tex]x= 30/7[/tex]

Step-by-step explanation:

[tex]2/3 x = -1/2 x + 5[/tex]

[tex]2/3x+1/2x = + 5[/tex]

[tex]7/6x=5[/tex]

[tex]x=5 \times 6/7[/tex]

[tex]x= 30/7[/tex]

Answer:

Average speed v = 24.29 mph

Total time taken ∆t = 7 hours

Step-by-step explanation:

Given;

the first 2 hours, they travel at a rate of 25 miles per hour

t1 = 2 hours

v1 = 25 mph

then take a break for 2 hours and do not travel during that time

t2 = 2 hours

v2 = 0

They finally travel again for another 3 hours at a rate of 40 miles per hour before stopping for the day.

t3 = 3 hours

v3 = 40 mph

Total time taken ∆t = sum of time taken for the day travel

∆t = t1 + t2 + t3

Substituting the values;

∆t = 2 + 2 + 3 = 7 hours

The average speed v = total distance travelled/total time taken

v = d/∆t .......1

Total distance travelled d = Σ(velocity × time)

d = v1t1 + v2t2 + v3t3

d = 25 × 2 + 0×2 + 40 × 3

d = 50 + 0 + 120

d = 170 miles

Substituting into equation 1.

v = 170 miles ÷ 7 hours

Average speed v = 24.29 mph

Answer:

6x + y = 38.75

x + 2y = 17

price of drink is $5.75

Step-by-step explanation:

Let the price  of popcorn be x

Let the price  of drink be y.

price  of  12 bags of popcorn will be 12x

price  of  2 drinks  will be 2y

it is given that "Kennedy spends a total of $77.50 on 12 bags of popcorn and 2 drinks."

thus

12x + 2y = 77.50

dividing LHS and RHS by 2 we have

12x/2 + 2y/2 = 77.50/2

=> 6x + y = 38.75 _________(1)

__________________________________________________

price  of  3 bags of popcorn will be 3x

price  of  6 drinks  will be 6y

it is given that "Olivia spends a total of $51.00 on 3 bags of popcorn and 6 drinks."

thus

3x + 6y = 51.00

dividing LHS and RHS by 3 we have

3x/3 + 6y/3 = 51/3

=> x + 2y = 17   _____________(2)

__________________________________________________

Thus we have two equation

6x + y = 38.75 _________(1)

x + 2y = 17

=> x = 17 - 2y

putting this value of x in equation 1 we have

6( 17 - 2y) + y = 38.75

=> 102 - 12y + y = 38.75

=> 102 - 11y = 38.75

=> -11y = 38.75 -102

=> -11y = -63.25

=> y = -63.25/-11 = 5.75

as we have x = 17 - 2y

using 5.75 in place of y

x = 17 - 2(5.75 )

=> x = 17 - 11.5

=> x = 5.5

Thus, system of equations are

6x + y = 38.75

x + 2y = 17

price of drink is $5.75

Answer:

The answer will be 1.25

Step-by-step explanation:

In order to make 512 into a decimal, you take the top number or numerator, which is 5 , and take your bottom number or your denominator, which is 12 , and divide 5 by 12 which will give you0.416666667

Hey there! :)

Answer:

1.25

Step-by-step explanation:

Begin by multiplying the fractions:

[tex]\frac{3}{1}* \frac{5}{12}= \frac{3*5}{1*12} = \frac{15}{12}= \frac{5}{4}[/tex]

Convert [tex]\frac{5}{4}[/tex] into a decimal:

5/4 = 1.25.

Answer:

1) a^4 + 16b^4

2) x^4 + 5x^2 + 9

3) p^2 − 10px − q^2 + 6qx + 16x^2

Step-by-step explanation:

1) a^4 + (2b)^4

= a^4 + 16b^4

2) x^4 + 5x^2 + 9

There are no like terms.

Answer:

= x^4 + 5x^2 + 9

3) p2 − 10xp + 16x2 − q2 + 6xq

= p^2 − 10px − q^2 + 6qx + 16x^2

Answer:

[tex]t=\frac{21.3-20}{\frac{3.199}{\sqrt{10}}}=1.29[/tex]    

The degrees of freedom are given by:

[tex]df=n-1=10-1=9[/tex]  

And the p value would be:

[tex]p_v =2*P(t_{(9)}>1.29)=0.229[/tex]  

Since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean is different from 20.

Step-by-step explanation:

Information given

22, 17, 27, 20, 23, 19, 24, 18, 19, and 24

The sample mean and deviation for these data are:

[tex]\bar X=21.3[/tex] represent the ample mean

[tex]s=3.199[/tex] represent the sample standard deviation for the sample  

[tex]n=10[/tex] sample size  

[tex]\mu_o =20[/tex] represent the value to verify

[tex]\alpha=0.05[/tex] represent the significance level

t would represent the statistic

[tex]p_v[/tex] represent the p value

System of hypothesis

We want to verify if the true mean is equal to 20 or not, the system of hypothesis would be:  

Null hypothesis:[tex]\mu = 20[/tex]  

Alternative hypothesis:[tex]\mu \neq 20[/tex]  

The statistic would be:

[tex]t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}[/tex]  (1)  

And replacing the info given we got:

[tex]t=\frac{21.3-20}{\frac{3.199}{\sqrt{10}}}=1.29[/tex]    

The degrees of freedom are given by:

[tex]df=n-1=10-1=9[/tex]  

And the p value would be:

[tex]p_v =2*P(t_{(9)}>1.29)=0.229[/tex]  

Since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean is different from 20.