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2 years ago

13

The chorus has 42 members. Which expression represents the number of ways a group of 7 members can be chosen to do a special per

formance?
42 x 7

42!/7!35!

42!/35!

plz help

1 answer:

Elanso [62]2 years ago

6 0

42!/7!35! Is the answer you’re looking for

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Any suggestions or answers

tatiyna

Answer:

The correct answer is A) $7.00

Step-by-step explanation:

In order to determine that, you can use any two points and the slope formula. For the purpose of this, we'll use (1, 39) and (3, 53)

m(slope) = (y2 - y1)/(x2 - x1)

m = (53 - 39)/(3 - 1)

m = 14/2

m = 7

6 0

3 years ago

Budget planners in two towns, Alphaville and Betaville, developed models to determine the budget surplus (in dollars) for a year

kramer

Answer:

(a) $-3x^2+150x-10000$

(b) $-\$16,863,760,000$

Step-by-step explanation:

Alphaville's Budget Surplus Model is $-2x^2+ 500x$

Betaville's Budget Surplus Model is $x^2- 100x + 10000.$

We want to determine the expression that shows how much greater Alphaville’s annual budget surplus is than Betaville’s for a particular amount of tax revenue.

To do this, we subtract Betaville's Model from Alphaville's model.

$-2x^2+ 500x-(x^2- 100x + 10000)\\$

Opening the brackets

$-2x^2+ 500x-x^2+100x - 10000\\$

Collect like terms and simplify

$-2x^2-x^2+100x + 500x- 10000\\=-3x^2+150x-10000$

The expression that shows how much greater Alphaville's Budget is:

$-3x^2+150x-10000$

(b) If the tax revenue that year in each town is $75,000

We want to evaluate the expression derived above when the tax revenue that year in each town is $75,000 i.e.at x=75000

$-3x^2+150x-10000\\=-3(75000)^2+150(75000)-10000\\=-\$16,863,760,000$

3 0

3 years ago

Do you prefer to express solutions to inequalities using interval notation or as an inequality ? Do you think it’s important to

MAXImum [283]

Answer:

I prefer to express solutions to inequalities using interval notation. Both formats are are important but I think interval notation is easier to understand and represents better the solutions.

For example, if you have the following inequation:

x-2> 1

x>3

Therefore, the solution could be written either x>3 OR (3, +inf). But what happens if the solution to the system of equation is x>3 or x<-3? The solution can be easily written as: (-inf, -3) U (3, inf) instead of 'x>3 or x<-3' which can be confusing.

4 0

2 years ago

Tacey has a square piece of cloth. She cuts 3 inches off of the length of the square and 3 inches off of the width. The area of

aleksandrvk [35]

Answer:

idk because it doesnt say what the square area was for the smaller square

Step-by-step explanation:

5 0

3 years ago

Triangle SQT is isosceles. The measure of angle STQ is 48°. Triangle S Q T is cut by perpendicular bisector T R. The lengths of

igomit [66]

Answer:

$m\angle STR=24^o$

Step-by-step explanation:

we know that

$m\angle STQ=m\angle STR+m\angle RTQ$ ---> by addition angle postulate

we have

$m\angle STQ=48^o$ ----> given problem

$m\angle STR=m\angle RTQ$ ----> given problem

substitute in the expression above

$48^o=2m\angle STR$

Divide by 2 both sides

$m\angle STR=24^o$

3 0

3 years ago

Read 2 more answers