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Rus_ich [418]
3 years ago
9

Kendra charges $11 to shovel a driveway. She shoveled 4 driveways on

Mathematics
1 answer:
MrRissso [65]3 years ago
8 0

Answer:

A and B

Step-by-step explanation:

The 11 should be multiplied after 4 + x because the (4 + x) is the total amount of driveways she shoveled. If you solve for x using A's equation, you should get 9 as your answer. Therefore, your answer choices are A and B.

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Solve (X + 6)(x - 4) = -16<br> O {-4, 6)<br> O {-4, 2]<br> O (-12, 22)
masya89 [10]

Answer:

x=2 or x=−4

Step-by-step explanation:

Let's solve your equation step-by-step.

(x+6)(x−4)=−16

Step 1: Simplify both sides of the equation.

x2+2x−24=−16

Step 2: Subtract -16 from both sides.

x2+2x−24−(−16)=−16−(−16)

x2+2x−8=0

Step 3: Factor left side of equation.

(x−2)(x+4)=0

Step 4: Set factors equal to 0.

x−2=0 or x+4=0

x=2 or x=−4

6 0
3 years ago
Given<br> .<br> f(x) = 3x2 + 4x – 30 find f (4)<br> Show your work on the sketch pad below.
weeeeeb [17]

Answer:

Step-by-step explanation:

f(4) = 3*(4)^2 + 4*(4) -30

f(4)=48 + 16 -30

=34

4 0
3 years ago
Can anyone help me please?
vovangra [49]

Answer:

- 6

Step-by-step explanation:

The given statement implies that the slope of line formed by (5, r) is (3, -2) is -2, as they lie on the same line.

Slope(using these pts) = (y2 - y1)/(x2 - x1)

=> - 2 = (-2 - r)/(3 - 5)

=> -2 = (-2 - r)/(-2)

=> (-2)(-2) = (-2 - r)

=> 4 = -2 - r

=> r = - 2 - 4

=> r = - 6

4 0
2 years ago
Read 2 more answers
Write as a product 27a^3−(a−b)^3
jarptica [38.1K]

Answer:

  (2a +b)·(13a^2 -5ab +b^2)

Step-by-step explanation:

The factorization of the difference of cubes is a standard form:

  (p -q)^3 = (p -q)(p^2 +pq +q^2)

Here, you have ...

  • p = 3a
  • q = (a-b)

so the factorization is ...

  (3a -(a -b))·((3a)^2 +(3a)(a -b) +(a -b)^2) . . . . substitute for p and q

  = (2a +b)·(9a^2 +3a^2 -3ab +a^2 -2ab +b^2) . . . . simplify a bit

  = (2a +b)·(13a^2 -5ab +b^2) . . . . . . collect terms

6 0
3 years ago
What is cotangent of A divided by Tangent of A?
grin007 [14]
tan A =  \frac{1}{cot A} cot A =  \frac{1}{tan A} 

\frac{1}{cot A} / \frac{1}{tanA} =1

4 0
3 years ago
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