ThAnks for the help pls

Answers

Answer 1

I think the answer is D

Related Questions

Most dermatologists recommend using sunscreens that have a Sun Protection Factor (SPF) of at least 30. One of the authors wanted to find out whether the SPF of sunscreens used by students at her school exceeds this value on average? To collect data, the author surveyed students in her introductory statistics course and found that in a sample of 52 students the mean SPF was 34.55 and the standard deviation of SPF was 20.12. The data were not strongly skewed.

Required:

Use the Theory-Based Inference applet to find and report the 95% confidence interval for the parameter of interest.

Answers

Answer:

95% confidence interval = ( 28.9485, 40.1515 )

Step-by-step explanation:

sample size( n ) = 52

mean value ( x )= 34.55

std ( б ) = 20.12

H0 : u ≤ 30

Ha : u > 30 ( claim )

95% confidence interval for mean SPF level ( df = 51 )

= mean value ± [tex](2.0076 + \frac{20.12}{\sqrt{52} } )[/tex]

95% confidence interval = ( 28.9485, 40.1515 )

we cannot reject H0

i will mark you. i need help fast thank you!

Answers

Answer:

If I'm correct it should be the second one

Step-by-step explanation:

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Write the expression in standard form. 4 - 14i

Answers

Answer:

4 - 14i

Step-by-step explanation:

The answer is already in it standard form.

Hope this helps!

There are 80 dogs and cats in the animal shelter. The ratio of dogs to cats is 5/11. How many of the animals are dogs

Answers

Answer:

25 dogs and 55 cats

Step-by-step explanation:

5/11 ratio, first add those up which you get 16

Then divide the total amount of animals by the ratio-80

80/16 = 5

(5*5)/(11*5)

25 dogs and 55 cats

Help me pls and thank you

Answers

Answer: 6

Step-by-step explanation:

Answer:

42/7 or 6

Step-by-step explanation:

First, let's start off with the top part. 6^2 is 6 times 6, which is 36. 36 + 6 = 42. Now for the bottom part, 4^2 is 4 times 4, which is 16. 3^2 is 9. 16-9=7. 42/7 is the fraction form and if you want it simplified, then it is 6.

Hope that helps!

the set of all numbers less than or equal to -6 or greater than it equal to -2

Answers

Answer:

Step-by-step explanation:

-6 ≥ x

-2 ≤ x

I don't think you can combine this into one statement.

Your line looks something like

<---------------O O------------------------->

-6 -2

Shade in the 2 Os. The shaded in Os are included in the way the line looks.

Which quadrant is negative 3 and positive 15

Answers

Answer: quadrant 3

Step-by-step explanation:

2. Which ratio is equivalent to 5/8?

A: 9/12

B: 10/15

C: 15/24

D: 20/35

Answers

C
8 times 3 is 24 and 5 times 3 is 15.

CCCCCCCCCCCCCCCCCCCCCCCC

Plz help (extra points)

Answers

Answer:

6/18 bags

Step-by-step explanation:

Answer:

8/12 OF A BAG IS THE RIGHT ANSWER

Which relation is a function?
A.
{(2, 3), (1, 5), (2, 7)}
B.
{(-1, 5), (-2, 6), (-3, 7)}
C.
{(11, 9), (11, 5), (9, 3)}
D.
{(3, 8), (0, 8), (3, -2)}
Reset

Answers

Answer:

Step-by-step explanation:

There are 7 roses in a vase of 12 flowers. The rest are daisies.

(a) What is the ratio of roses to daisies?

(b) What is the ratio of all flowers in the vase to daisies?

Answers

a) 7:5

b) 12:5

It’s that

Answer:

A: 7:5 B: 12:5

Step-by-step explanation:

By doing simple subtraction you can find that the remaining flowers are daisies, the rest is self explanatory. Hope this helps!

Write the number for nineteen million eight thousand

Answers

Answer:

18,008,000 that's how you write it

Answer:

19008000

Step-by-step explanation:

hope it helps :)

-6(6m + 7) = 102
Please help

Answers

Answer:

Heres ur answer m=-4

i need help please !

Answers

Answer:

me too but I'm not sure

Answer:

E(8,8) F(6,10) G(2,8) H(6,6)

Step-by-step explanation:

When rotating point 180° about the origin, all signs must change

ex) A(x,y) becomes A(-x,-y)

Slope pls help ASAP due today

Answers

Answer:

y = 2x - 3

Step-by-step explanation:

Slope = 2

Y-intercept = -3

Write an equation of the line, in point-slope form, that passes through the two given points. points: (-3,18). (12,-12)

Answers

Answer:

y = -2x + 12

Step-by-step explanation:

First, find the slope using rise over run (y2 - y1) / (x2 - x1)

Plug in the points:

(y2 - y1) / (x2 - x1)

(-12 - 18) / (12 + 3)

-30 / 15

= -2

Then, plug this and a point into y = mx + b and solve for b:

y = mx + b

-12 = -2(12) + b

-12 = -24 + b

12 = b

Then, plug in the slope and b into y = mx + b

y = -2x + 12 is the equation of the line

Which point is in the graphed solution set of this system of inequalities?
{4x−3y 5

(0, −6)
(2, 2)
(2, −1)
(−2, 0)

Answers

Answer:

(2,-1)

4 over 3 on a gragh divided by the demonitar of the higher number equaled to 5 will get u (2,-1)

Step-by-step explanation:

Hopefully this helped, have a great day! :)

PLZ HELP ME WITH THIS!!! I WILL MARK BRAINLIEST!!!

Answers

Answer:

-2+2= 0

Step-by-step explanation:

he's incorrect bc 2 is greater than 0. so the sum is less than one of the numbers in the equation

one or both of the numbers could be negative

Denise proposes the following transformation rule for this rotation:

(x,y) ➝ (y+4, -x-2)

Does this rule work? Justify your answer.

Answers

Answer:

The proposed rule correctly works.

Step-by-step explanation:

As the original triangle has the vertices with the coordinates

A(-6, 6)B(-6, 1)C(-2, 1)

From the given diagram, the image of the triangle has the vertices

A'(10, 4)

B'(5, 4)

C'(5, 0)

According to the proposed rule, the image should have the following vertices.

(x,y) ➝ (y+4, -x-2)

A(-6, 6) ➝ (6+4, -(-6)-2) = A'(10, 4)

B(-6, 1) ➝ (1+4, -(-6)-2) = B'(5, 4)

C(-2, 1) ➝ (1+4, -(-2)-2) = C'(5, 0)

So, the coordinates of the image of the triangle are correctly drawn as per the proposed rule.

Therefore, the proposed rule correctly works.

Which finds the solution to the equation represented by the model below?

O removing 1 x-tile from each side
O removing 3 unit tiles from the right side
O adding 3 positive unit tiles to each side
O arranging tiles into equal groups to match the number of x-tiles

Answers

Answer:

removing 1 x-tile from each side.

Step-by-step explanation:

the question is asking to isolate x and the equation is 2x = x + 3.

to isolate x subtract each side by an x-tile

Answer:

The answer is A

Step-by-step explanation:

Reflection. Can anyone figure this out?

Answers

Hope this helps :p

Evaluate 12.7 - x for x= 8.41

Answers

Answer:

429

≈2.071231518

x=−

429

≈−2.071231518

Step-by-step explanation:

12.7−xx=8.41

Multiply x and x to get x

12.7−x

=8.41

Subtract 12.7 from both sides.

−x

=8.41−12.7

Subtract 12.7 from 8.41 to get −4.29.

−x

=−4.29

Divide both sides by −1.

−1

−4.29

Expand

−1

−4.29

≈4.29 by multiplying both numerator and the denominator by 100.

−100

−429

Fraction

−100

−429

≈4.29 can be simplified to

100

429

=4.29 by removing the negative sign from both the numerator and the denominator.

100

429

Take the square root of both sides of the equation.

429

x=−

429

Answer:

4.29 :)

Step-by-step explanation:

If the real exchange rate is 5/4 pounds of Chilean beef per pound of U.S. beef, a pound of U.S. beef costs $2 and the nominal exchange rate is 500
Chilean pesos per dollar, then Chilean beef costs

Answers

i do u u look de las mejores canciones

What is the middle term of the product of (3m - 1)(m + 9)

Answers

Answer:

26m

Step-by-step explanation:

Answer:

26m

Step-by-step explanation

A golf ball is hit on the moon so that
the height of the ball (in feet) is modeled by the
function h(x)=-2.7t^2+21.6t after t seconds.
The ball will land in t = ? seconds

Answers

I am just not sure if I did this properly. My professor hasn't really gone over when to use the range equation but I would assume range would equal the distance traveled therefore can be used for this problem. If not the how would I go about solving this? I did 1/6*9.8=1.63 for g on the moon Then used R=(Vi^2sin2theta)/g so on the moon R=((28^2)sin2*35)/1.63=452m

Please Brainliest..? thx

Please help AND SHOW ALL THE WORK

Answers

Answer:

oh heyyy this is the same problem ok im gonna answer it the same way lol

if somebody answered my question i will give them thanks and brill and vote

Answers

Answer:

which out of those you want answer for? happy to help

Step-by-step explanation:

The cycle time for trucks hauling concrete to a highway construction site is uniformly distributed over the interval 45 to 90 minutes. What is the probability that the cycle time exceeds 80 minutes if it is known that the cycle time exceeds 50 minutes? (Round your answer to four decimal places.)

Answers

Answer:

try to sreach this on brainly the question and see if someone already answer it

Step-by-step explanation:

1 point
"rancis heard that a car stereo system was on sale for 30% off. If the sale price was $57.75, what was the original price of the stereo?
TE
T

Answers

....................beep

The table below shows an input/output relationship. Find the Starting Value/y-intercept.

Answers

Answer:

Input 0 and Output -6

Step-by-step explanation:

The reason why is that we know that -4 has a output of -18 which -3 has a output of -15 meaning each time x increases by 1 the output increases by 3. 1:3 ratio basically so since we know this the starting value should be

y=0+3x

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