Solve for brainliest

Answers

Answer 1

Answer:

Answer:

but not sure because I'm not that good

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Does the graph below represent a function? A. YesB. No
C. Sometimes
D. Not enough information.

Answers

Yeah C should be the correct answer

Subtract the following military time: 0545 - 0058

Answers

You subtract it and get 487

Answer:

i think it would be 0447

Step-by-step explanation:

2. Factorisation of the algebraic expression 169x2 - 52xy + 4y2

Answers

Answer:

(13-2y)(13-2y)

Step-by-step explanation:

Algebraic identity of x^2-2ab+b^2

Yes that answer look about right

At the zoo there were 5 times as many tigers as lion Tom counted a total of 54 tigers and lions how many.tigers were there?

Answers

Answer:

5x=54

Step-by-step explanation:

5x=54

divide 5 by both sides

x=10.8

sorry if I am wrong but I tried my best

7cm is less than or greater than 3in

Answers

7 cm is less than 3 inches. 7 cm = 2.75 inches

An analysis of the grades on the first test in History 101 revealed that they approximate a normal curve with a mean of 75 and a standard deviation of 8. The instructor wants to award the grade of A to the upper 10% of the test grades. To the nearest percent, what is the dividing point between an A and a B grade? Select one:
a. 80
b. 85
c. 90
d. 95

Answers

Answer:

b. 85

Step-by-step explanation:

Average grade (μ) = 75

Standard deviation (σ) = 8

Assuming a normal distribution, the z-score corresponding to the upper 10% of the test grades is z = 1.28.

The minimum grade 'X' within the top 10% is given by:

$z=(X-\mu)/(\sigma)\n1.28=(X-75)/(8)\nX=85.24$

Rounding to the nearest percent, the dividing point between an A and a B grade is 85.

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5. The length of similar components produced by a company are approximated by a normal distribution model with a mean of 5 cm and a standard deviation of 0.02 cm. If a component is chosen at random a) what is the probability that the length of this component is between 4.98 and 5.02 cm

A traveler has 8 pieces of luggage. How many ways can he select 4 pieces of luggage for a trip