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MATH SOLVE
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Act scores for 1,171,460 members of the 2004 high school graduating class who took the test closely followed the normal distribution with mean 20.9 and standard deviation 4.8. Choose two students independently and at random from this group. A) what is the expected difference in their scores b) what is the standard deviation in their scores c) find the probability that the difference in the two students scores is greater than 6. Thank you so much for your help!!
General
2 months ago
Which function equation is represented by the graph? A)f(x)=40(3.25)^xB) f(x)=40(2.25)^xC) f(x)=40(1.5)^xD) f(x)=40(2.5)^xPLEASEE HELP ):
General
2 months ago
The heights of adult women are approximately normally distributed about a mean of 65 inches with a standard deviation of 2 inches. if rachael is at the 99th percentile in height for adult women, then her height, in inches, is closest to:
General
2 months ago
kai owns a bakery and uses 25 grams of sugar for every 75 grams of butter in a pastry recipe. Using this information, complete the table of equivalent ratios to show the amount of sugar and the amount of butter used to make pastries.
General
2 months ago
At the beginning of year 1, Amada invests $800 at an annual compound interest rate of 5%. She makes no deposits to or withdrawals from the account.Which explicit formula can be used to find the account’s balance at the beginning of year 5? What is the balance? A(n) = 800 • (1 + 0.05)(n – 1); $972.41 B. A(n) = 800 + (n – 1)(0.05 • 800); $960.00 C. A(n) = 800 • (1 + 0.05)n; $1021.03 D. A(n) = 800 + (0.005 • 800)(n – 1); $1056.00
General
2 months ago
Which of the following expressions is equal to 1 divided by 16
General
2 months ago
PLZ HELP ME WITH THIS PROBLEM I DON'T HAVE THAT MUCH TIME!!Nine students choose integers. Here are 7 of them: 5,-8, 10,-1 -12 ,-20 and 1.A. When all nine integers are ordered from least to greatest, the middle integer is 1. Describe the integers chosen by the other two students.B. When all nine integers are ordered from least to greatest, the middle integer is -3. Describe the integers chosen by the other two students.
General
2 months ago
A nutrition company is marketing a low calorie snack brownie a serving size of snack is three brownies and has a total of 50 brownies determine how many calories 6 brownies would have
General
2 months ago
which values of x satisfy the inequality 0.5x-0.75>3.25
General
2 months ago
What two numbers have a sum of 217 and a difference of 85
General
2 months ago
Which statements are true about exponential decay functions? Check all that apply. A. The domain is all real numbers. B. As the input increases, the output increases. C. The graph is the same as that of an exponential growth function. D. The base must be less than 1 and greater than 0. E. The function has a constant multiplicative rate of change.
Algebra
2 months ago
Which statements are true about the graph of y ≤ 3x + 1 and y ≥ –x + 2? Check all that apply. The slope of one boundary line is 2. Both boundary lines are solid. A solution to the system is 1, 3. Both inequalities are shaded below the boundary lines. The boundary lines intersect.
Coordinate-geometry
2 months ago
Which statements describe both graphic novels and comic books? Select three options.T are told in first personThe story never ends.T use panels.T include images and words.T contain gutters.
Algebra
2 months ago
Which statements describe properties of stars? Check all that apply.Stars produce energy through nuclear fusion.Stars produce energy through gravity.Stars are massive objects composed of gas.Stars are solid objects that we could stand on.Stars are composed primarily of hydrogen and helium.Stars are composed primarily of liquids such as water.
Algebra
2 months ago
Which statements describes attributes of an artesian well? Check all that apply.1. requires a bucket2. uses natural pressure3. uses a mechanical pump4. is heated by hot rocks or magma5. has groundwater stuck between impermeable layers
Algebra
2 months ago
Which statements must be true about the reflection of ΔXYZ across Line M N? Select three options. M∠X'Z'Y' = 90° m∠MCY = 90° XX' ≅ YY' BZ' ≅ BZ XY || X'Y
Algebra
2 months ago
Which step is not part of a normal convection cycle?
Algebra
2 months ago
Which step will decrease the pressure of a gas inside a closed cubical container?
Algebra
2 months ago
Which story premise is most clearly a classic tragedy?A. The class clown is actually a very sad person who just wantsacceptance.B. A political candidate gets so caught up in winning, he loseseverythingC. Hurricane Don approaches land, forcing Drew to leave his homebehindD. Nothing positive ever seems to happen to Lin, and today is noexception
Algebra
2 months ago
Which substance has Hf defined as 0 kJ/mol? H2O s Ne l O2 g CO2 g
Algebra
2 months ago
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