I need help with question 7.

Answers

Answer 1

Answer: Im really not sure but I think it’s A

Answer 2

Answer: i think it’s the first one

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Luc randomly selected 40 students and asked them whether they had ever gone snowboarding. He repeated this survey using the same method three more times.Do any of the surveys appear to be biased? Ever gone snowboarding? Survey 1 2 3 4 Yes 10 13 2 12 No 30 27 38 28 A. Yes, because the results from Survey 3 differ significantly from results from Surveys 1, 2, and 4, which agree. B. Yes, because all four surveys do not have identical results. C. No, because although the results differ among the four surveys, the sample method used for all was the same. D. No, because all four surveys have about the same number of people saying “yes” and about the same number of people saying “no.”
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There were 13 original states. There are now 50 states. What fraction of the states are original states?-Please help, my mind went blank I usually know this stuff

Answers

I don’t know for sure but I think the answer is 13/20

Ah, I haven't done this in a while.. I believe it is 260/10? I'm not entirely sure.. I apologize for not being sufficient. I hope your mind returns soon because I can't find mine!

find the slope of the line through the given pair of points, if possible. Based on the slope, indicate whether the line through the points rises from left to right, falls from left to right, is horizontal, or is vertical (-7,-9) and (-5,-8)

Answers

easy peasy
slope=(change in rise)/(change in run)
aka
slope between points (x1,y1) and (x2,y2) is
slope=(y2-y1)/(x2-x1) since y is rise/up and x is run/leftright

points

(-7,-9) and (-5,-8)
x1=-7
y1=-9
x2=-5
y2=-8
remember minusing a negative means addin a positive
slope=(-8-(-9))/(-5-(-7))=
(-8+9)/(-5+7)=1/2

slope=1/2

positive slopes go from bottom left to top right

since it is less than 1
it is more horizonal than vertical

Find two integers whose sum is -7 ans whose product is 12. Explain how you found the numbers.

Answers

-3 + -4 = -7
add the numbers and keep the common sign.
-3 * -4 = 12
since the factors are both negative, the product is positive, when multiplying and/or dividing.

The value of y varies directly with the value of x, and y = –8 when x = 4.Which equations represent the relationship between y and x?

Choose exactly two answers that are correct.
A.y/x=1/2
B.y/x=-2
C.-2x=y
D.x=2y

Answers

B. y / x = - 2 because ( -8 ) / 4 = - 2 ;

n 1992, Jason bought a gallon of gas for $1.18. Yesterday, he bought a gallon of gas for $2.07. What is the percentage increase of the price of a gallon of gas from 1992 to yesterday? If necessary, round to the nearest tenth of a percent.

Answers

it is o.89 cents because u subtract 2.07 from 1.18 and u get 0.89 cents

Answer:

is 90.7%.

Step-by-step explanation:

First, find the difference between the two prices of a gallon of gas.

Then, divide by the price of the gallon of gas from 1992, and convert to a percent.

The percentage increase of the price of a gallon of gas is 90.7%.

Create an expression to find the time for the given distance and rate, and find the value of the expression. d=315 kilometers; r= 35 kilometers/hourThe time is _____ hours. Please Help!

Answers

Rate = $(distance)/(time)$
: . time = $(distance)/(rate)$
= $(315km)/(35km/h)$
= 9 hours

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