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sdas [7]
4 years ago
6

Question 1

Mathematics
1 answer:
ASHA 777 [7]4 years ago
6 0
Question 1 Simplify the following expression: (5x2 + 3x + 4) − (2x2 − 6x + 3). If the final answer is written in the form Ax2 + Bx + C, what is the value of B?

Solution:

5x^2 + 3x + 4 - 2x^2 + 6x - 3 = 3x^2 + 9x + 1

Then, B = 9

Question 2
Simplify: (3x2 − 2) + (2x2 − 6x + 3)

5x2 − 6x + 1

5x2 − 6x − 1

x2− 6x + 1

5x2 − 8x + 3

Solution:

3x^2 - 2 + 2x^2 - 6x + 3 = 5x^2 - 6x + 1

Question 3
A sports company conducted a road test of a new model of a geared bike. The test rider cycled (3x - 2) miles on a flat road, (x2 - 5) miles uphill, and (2x + 7) miles downhill. Which simplified expression is equivalent to the total distance, in miles, for which the bike was tested?

x2 - x

x2 + 5x

x2 − x + 14

x2 + 5x + 14

(3x - 2) + (x2 - 5) + (2x + 7) = 3x - 2 + x^2 - 5 +2x + 7 = x^2 + 5x

Question 4
Simplify: (4x − 6) − (5x + 1)

x + 7

−x + 7

x − 7

−x − 7

(4x − 6) − (5x + 1) = 4x - 6 - 5x - 1 = -x -7

Question 5
Simplify the following expression: (x + 6y) - (3x − 10y). If the final answer is written in the form Ax + By, what is the value of A?

(x + 6y) - (3x − 10y) = x + 6y - 3x + 10y = -2x + 16y

A = -2

Question 6
Simplify: (3x − 5) + (3x + 6)

6x − 1

1

6x − 11

(3x − 5) + (3x + 6) = 3x - 5 + 3x + 6 = 6x + 1


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Please help me!
rewona [7]

Answer:

12(j+t) + 15 = c

Step-by-step explanation:

So, lets go over what we know.

First off, for simplicity, lets consider Johnathan as J, and Trina as T.

We know that both J and T produce 12 dollars each per hour.

We know that J gets a extra 15 dollars.

We can think of the amount they produce each hour as the time they work in total, times the money they make a hour, which is 12.

We can think of this first part where the total time they work is (J + T)

The 12 dollars they get an hour can be though of as multiplying this sum: 12(J+T)

Finally, we know that J gets an extra 15 dollars.

This is not dependent on time, like the other variables, so we simply add it to the sum of what they make in the end:

12(J+T)+15

This looks like answer C.

Answer:

C

Hope this helps!

6 0
2 years ago
-
adoni [48]

Answer:

The correct answer is C

x² - 2x -15

6 0
3 years ago
Name the constant in the expression:
Over [174]
The constant is 5 because it is not being effected by the variable it is just a 5
6 0
3 years ago
Pls help me I really don’t get it
aalyn [17]
I think its talking about proportional or non-proportional.. if it is its proportional
8 0
3 years ago
Evaluate 9.3s+8.9t when s=3 and t=4
USPshnik [31]

Answer:

63.5

Step-by-step explanation:

9.3(3)+8.9(4) = 63.5

substitute the values (s and t) with the given numbers (3 and 4.)

8 0
3 years ago
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