MATHEMATICS COLLEGE

15 points
grade 7 math
15 points grade 7 math - 1

Answers

Answer 1
Answer: B ! It’s the highest number count !

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Which of the following correctly describes the graph of this function?
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A barbecue restaurant gives 3 napkins for every 5 items ordered. if an order is for 30 items, how many napkins should be given? Use the double number line diagram to solve.​
In a climate survey, it was determined that in a random sample of 15 days, the average temperature in Kalamazoo at 2:00 PM in the months of July and August is 73.38 degrees with a standard deviation of 3.798 degrees. Using this information, a 95% confidence interval for the average is (71.28, 75.48). Which of the following is the appropriate interpretation of this interval?1)We are certain that 95% of the days in the months of August and July will have a temperature at 2:00 PM between 71.28 and 75.48.2)We cannot determine the proper interpretation of this interval.3)We are 95% confident that the average daily temperature for the months of July and August at 2:00 PM for the days recorded is between 71.28 and 75.48.4)We are 95% confident that the proportion of all days' temperatures will fall between 71.28 and 75.48.5)We are 95% confident that the average daily temperature for the months of July and August at 2:00 PM is between 71.28 and 75.48.

In this equation what do i have to change to make x equal 0 instead of 1/4
2√x+4-2=3

Answers

To solve for x:
- add 2 to both sides
2/x+4=5
- subtract 4 from both sides
2/x=1
- divide both sides by 2
/x= 1/2
- square both sides
x = 1/4

What is the pattern in the values as the exponents increase?

Answers

as the exponents increase, the value is multiplied by 2

Which technique is most appropriate to use to solve each equation?Drag the name of the technique into the box to match each equation

Answers

(x+3)(x+2)=0       zero product property
x^2+6=31            square root property

Answer:

Step-by-step explanation:

(A) The given equation is:

(x+3)(x+2)=0

The above equation can be solved using the zero product property which states that if ab=0, then either a=0 or b=0 or both can be equal to zero, therefore the solution of the above equation will be:

x=-3 or x=-2.

(B) The given equation is:

x^2+6=31

The above equation can be solved using the square root property which states that we isolate the x^2 term and take the square root of the number on the other side of the equals sign, therefore the solution of the above equation will be:

x^2=31-6

x^2=25

x={\pm}5.

Sharon needs 64 credits to graduate from her couch she has 24 credits what percent of the required credits does she have

Answers

i think you do 24/64 = x/100 so you cross multiply and get 37.5%. idk if that is what you're looking for but i hope this helped

Answer:

Her proportion does not have corresponding parts in the same position.

Step-by-step explanation:

What is 6,720 divided by 14??

Answers

480 because 6,720 divided by 14 is 480

Assume that the given procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean mu and standard deviation sigma. ​Also, use the range rule of thumb to find the minimum usual value mu minus 2 sigma and the maximum usual value mu plus 2 sigma. In an analysis of preliminary test results from a​ gender-selection method, 33 babies are born and it is assumed that​ 50% of babies are​ girls, so equals 33 and p equals 0.5.

Answers

Answer:

Step-by-step explanation:

Hello!

The study variable is:

X: Number of female babies in a sample of 33 babies.

The variable has binomial distribution, symbolically:

X~Bi(n; p)

n= 33

p= 0.5

The mean of the Binomial variable is:

E(X)= n*p

E(X)= 33*0.5

E(X)= 16.5

The variance of the Binomial is:

V(X)= n*p*q

q= (1 - p) (If "p" is the probability of "success", "q" represents the probability of "failure")

V(X)= 33*0.5*0.5

V(X)= 8.25

Then the standard deviation is:

√V(X)= √8.25= 2.87

E(X) + 2*(√V(X))= 22.24

E(X) - 2*(√V(X))= 10.76

I hope it helps!
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