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MATH SOLVE
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A set of data has a normal distribution with a mean of 50 and a standard deviation of 8. What percent of the data should fall between 42 and 58?
General
4 months ago
SAT scores are normally distributed, with a mean of 500 points and a standard deviation of 100 points. Suppose you take the SAT. Several weeks later, you receive your results, which show that you reached the 95th percentile for the math portion. Recalling that SAT scores are always expressed as multiples of 10, how many points did you get on the test? A. 165 B. 590 C. 690 D. 630 E. 670
General
4 months ago
Use the formula a2 – b2 = (a + b)(a – b) to factor completely. What are the factors of 36x8 – 49?A. (9x4 – 1)(4x2 + 49)B. (36x4 – 7)(x2 + 7)C. (6x4 – 7)(6x4 + 7D. (6x8 – 7)(6x + 7)
General
4 months ago
Which absolute value function has a graph that is wider than the parent function, f(x) = |x|, and is translated to the right 2 units?Which absolute value function has a graph that is wider than the parent function, f(x) = |x|, and is translated to the right 2 units?f(x) = 1.3|x| – 2f(x) = 3|x – 2|f(x) = 3/4 |x – 2|f(x) = 4/3 |x| + 2
General
4 months ago
Which set of values could be from a direct proportion?
General
4 months ago
Which of the following is the graph of ƒ (x ) = x 2?Click on the graph until the correct graph appears.
General
4 months ago
Please help. I don't understand where to start with this one. If the slope of a strictly decreasing function at the point (a, b) is –4, what is the slope of the inverse of the function at the point (b, a)? a. -1/4 b. –4 c. –1 d. The slope cannot be determined without knowing the equation of the function.
General
4 months ago
It costs a flat fee of $3.15 to make an international call plus $0.05 for every minute that you talk. If you were charged $5.10 for making an international call, for how many minutes did you talk? minutes
General
4 months ago
Tia bought a sweater that was discounted for 20% of the original price. She saved $4.60 with the discount. What was the original price of the sweater?
General
4 months ago
A playground is shaped like a rectangle with a width 5 times it’s length. What is the simplified expression for the distance between opposite corners of the playground?
General
4 months ago
he coordinates of the vertices of a polygon are (−2,−2), (3,−3), (4,−6), (1,−6), and (−2,−4).What is the perimeter of the polygon to the nearest tenth of a unit?
General
4 months ago
A store offers a 15% discount on all items in the store during a sale. All store employees get an additional 10% employee discount. In the equation below, C represents the cost of an item for an employee including tax and x represents the original price of the item:C = 0.765x + 0.06(0.765x)Chris is an employee at the store. He plans to buy a coat during the sale. The price of the coat before the discount is $100. How much will Chris pay for the coat during the sale? Remember, do not include the $ symbol.Answer for Blank 1:
General
4 months ago
Vivian bought 6 bottles of cooking oil. She gave the cashier $40 and expected $y change. (a) express the cost of 1 bottle of cooking oil in terms of y. (b) if y=10, find the cost of 1 bottle of cooking oil. (c) if y=1, find the cost of 1 bottle of cooking oil.
General
4 months ago
A new truck that sells for $25,000 depreciates (decreases in value) 11% each year. What will be the value of the truck in 2 years
General
4 months ago
A company did a quality check on all the packs of trail mix it manufactured. Each pack of trail mix is targeted to weigh 9.25 oz. A pack must weigh within 0.23 oz of the target weight to be accepted. What is the range of rejected masses, x, for the manufactured trail mixes?x < 9.02 or x > 9.48 because |x − 0.23| + 9.25 > 0x < 9.25 or x > 9.48 because |x − 9.25| > 0.23x < 9.25 or x > 9.48 because |x − 0.23| + 9.25 > 0x < 9.02 or x > 9.48 because |x − 9.25| > 0.23
General
4 months ago
The function g(x) = –x2 + 16x – 44 written in vertex form is g(x) = –(x – 8)2 + 20. Which is one of the transformations applied to the graph of f(x) = x2 to change it into the graph of g(x) = –x2 + 16x – 44?
General
4 months ago
The cooking time for a ham is 2/5 of an hour for each pound. A.) How long should you cook a ham that weighs 12 3/4 pounds? B.) Dinner time is 4:45 pm. What time should you start cooking the ham?
General
4 months ago
zachary purchased a computer for 1800 on a payment plan. three months after he purchased the computer, his balance was 1350. five months after he purchased the computer, his balance was 1050. what is an equation that models the balance b after m months
General
4 months ago
Shen’s mother gave him $10 to go buy groceries. He picked up a gallon of milk for $3.49, three pounds of oranges that cost $1.14 per pound, and a box of cereal for $3.46. Shen used front-end estimation to determine whether he had enough money for the groceries. How much did he estimate the total cost would be?
General
4 months ago
Please help me with these questions thank you.
General
4 months ago
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