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pshichka [43]
2 years ago
15

If f(x)=2x²-5x and h(x)=7x-13, find (h-f)(-4)

Mathematics
1 answer:
elena-s [515]2 years ago
6 0

-14x^{2} -x+33Answer:

Step-by-step explanation:

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-105=7(1+2n)<br> A:-8<br> B-4<br> C-10<br> D:-9<br> What’s the value of n in this equation?
Marat540 [252]
The answer is -8 or a
7 0
3 years ago
A stick 1 meter long casts a shadow 0.6 meters long. A building casts a shadow 25 meters long. How tall is the building (to 2 de
zloy xaker [14]

Answer:

41.67

Step-by-step explanation:

Using the tangent on the stick with shadow:

tan(θ) = \frac{1}{0.6}

Using the tangent on the building:

tan(θ) = \frac{h}{25}

⇒ h = 25 · tan(θ)

       = 25 · \frac{1}{0.6}

⇒ h = 41.66... ≈ 41.67

8 0
3 years ago
A football is thrown from the stadium. The height of this football can be represented by the polynomial -16t2 +32t + 20, where t
olasank [31]

Answer:

C

Step-by-step explanation:

related equation

-16t^2 + 32t + 20 = 0

-4t^2 + 8t + 5 = 0

Δ/4 = 16 + 20 = 36

t1 = (-4 + 6)/-4 = -1/2

t2 = (-4 - 6)/-4 = 5/2

-16(t+1/2)(t-5/2)

-16(2t+1/2)(2t-5/2)

-4(2t+1)(2t-5)

5 0
3 years ago
Put in slope intercept form
LiRa [457]
These require you solve for y. Do that by subtracting the x-term, then dividing by the y-coefficient.

5. 3y = 7x -9
  y = (7/3)x -3

6. 6y = -2x -3
  y = (-2/6)x -3/6
  y = (-1/3)x -1/2

7. 8y = 2x + 12
  y = (1/4)x +3/2
3 0
3 years ago
Hannah and Andrea were selling
Galina-37 [17]

Answer:

10

Step-by-step explanation:

5 0
3 years ago
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