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Sedbober [7]
3 years ago
5

Which is equivalent?

Mathematics
1 answer:
Arlecino [84]3 years ago
6 0

Steps to simplify:

(2x + 3)(x - 7)

~Use FOIL to multiply

(2x * x) + (2 * -7) + (3 * x) + (3 * -7)

~Simplify

=2x² - 14x + 3x - 21

~Combine Like Terms

2x² + (-14x + 3x) - 21

~Simplify

2x² - 11x - 21 (Option 2)

Best of Luck!

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Which is a solution to the equation?
zavuch27 [327]

Answer:

ox=-7

Step-by-step explanation:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

x

=

4

,

−

7

4 0
4 years ago
Can somebody sovle this for me please must equal 180 two examples . And thank you so much
Luba_88 [7]

Answer:

12

Step-by-step explanation:

3 0
3 years ago
Please help me now plz <br> I will mark you brainliest
elixir [45]

Answer:

theta = 24.4 degrees

Step-by-step explanation:

This is a right triangle.

sin theta = opp/ hyp

sin theta = 33/80

Take the inverse of each side

sin^-1 sin(theta) = sin^-1 (33/80)

theta =24.36197794

To the nearest tenth

theta = 24.4 degrees

6 0
3 years ago
Solve: 9^8-x= 27^x-3
liubo4ka [24]

Answer:

x = 4.25

Step-by-step explanation:

First, alter the equation until both exponents have the same base. We know that 9^3 is 27. Therefore, we can change 27^(x-3) into 9^3(x-3).

Now, the equation can be written as 9^(8-x) = 9^(3x-9)

Now that the bases are the same, we can cancel them out and just solve for the exponents. This will look like:

8-x = 3x-9.

8 = 4x - 9

17 = 4x

x = 4.25

8 0
4 years ago
Taylor charges $15 for the first hour of dog walking and $10 for each additional hour or fraction of an hour. The rates that Luc
svetoff [14.1K]

Answer:

Taylor will charge more by $15

Step-by-step explanation:

Given

Taylor

First Hour = $15

Hourly Rate = $10

Lucy:

f(x) = \left \{ {{20x,\ 0 \le \ x \ \le 2} \atop {10x, x>2}} \right.

For a dog walk of 2.5 hours.

Taylor's charges is:

Charges = First\ Hour + Hourly\ Rate * 2.5

Charges = \$15 + \$10 * 2.5

Charges = \$15 + \$25

Charges = \$40

Lucy's charges is:

Here, we consider

f(x) = 10x Because x > 2

i.e 2.5 > 2

So, Lucy's charges is:

Charges = 10 * \$2.5

Charges = \$25

By comparison;

Taylor will charge more by $15

The difference is calculated by:

Difference = \$40 - \$25

Difference = \$15

4 0
3 years ago
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