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My name is Ann [436]
3 years ago
10

For questions 1 and 2, simplify the expression. Then, identify the terms, constants, and coefficients of the simplified expressi

on.
1. 8x2 - 3x + 6x2 + 5x - 9



2. 5(2x + 4) + 3x



For question 3, translate the verbal expression to an algebraic expression. Then, identify the terms, constants, and coefficients.

3. The product of three and x, added to 4



4. Explain what the expression 7(3x) does not equal 21x, but (5*2)x does equal 10x.



5. A bank account balance for an account with an initial deposit of P dollars eans interest at an annual rate of r. The amount of money in the account after n years is described using the following expression: P(1+r)n. What effect does increasing the value of r have on the amount of money after n years?



6. A cell phone company bills on a monthly basis. Each bill includes a $19.95 service fee (which includes 500 minutes), a $3.95 tax, and a $0.15 per minute fee for each minute over the first 500 minutes. Write an expression that describes the cost of a month's bill. Then, tell how the expression would change if the service fee were reduced.
Mathematics
1 answer:
natta225 [31]3 years ago
5 0

Answer:

are the first 2 power of two like ur question is confusing

Step-by-step explanation:

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according to the 30°, 60°, 90° triangle rules,
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What is the value of x and the measure of MNQ
serg [7]

Answer:

3x - 13 +58 = 90, so 3x +45 = 90

Then 3x = 90 - 45 = 45 and x= 45/3 = 15.

m∠MNQ = 3x-13 = 3(15) - 13

                             =  45-13

                             =   32

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5 Simplify: (-10 - X) - x
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How long will it take Lola to travel from Paris to nice?
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3 0
3 years ago
The perimeter of a triangle is 41 inches. The three sides of the triangle are all differnt lenghts. The longest side is 10 less
erma4kov [3.2K]

Answer:

Longest\ side=20\ inches\\\\Middle\ side=15\ inches\\\\Shortest\ side=6\ inches

Step-by-step explanation:

Let be "x" the lenght of the longest side, "y" the lenght of the middle side and "z" the lenght of the shortest side.

The perimeter is:

41=x+y+z       [Equation 1]

We know that the longest side is 10 less than twice the middle side length. This can be expressed as:

x=2y-10          [Equation 2]

And the middle side length is three less than three times the shortest side length. This is:

y=3z-3         [Equation 3]

The steps are:

- Solve for "z" from the third equation:

y=3z-3\\\\y+3=3z

z=\frac{y+3}{3}    [Equation 4]

- Substitute [Equation 4] into [Equation 1]

- Substitute [Equation 2] into [Equation 1]

Then:

41=(2y-10)+y+(\frac{y+3}{3})

- Solve for "y":

41=2y-10+y+\frac{y+3}{3}\\\\41=2y-10+y+\frac{y}{3}+1\\\\41=\frac{10}{3}y-9\\\\41+9=\frac{10}{3}y\\\\\frac{50*3}{10}=y\\\\y=\frac{150}{10}\\\\y=15

- Substitute this value into [Equation 2] and into [Equation 4]:

x=2(15)-10\\\\x=20

z=\frac{(15)+3}{3}\\\\z=6

4 0
3 years ago
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