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goldfiish [28.3K]
2 years ago
8

I need the answers to these four questions ASAP

Mathematics
1 answer:
GarryVolchara [31]2 years ago
4 0

Step-by-step explanation:

7. 15 mm

8. 29 mm

9. 42 mm

10. 53 mm

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What isthe turning point of the parabola equation isY=(x+2)(x-8)​
Law Incorporation [45]

Answer:

(3, - 25 )

Step-by-step explanation:

Given a quadratic in standard form : y = ax² + bx + c : a ≠ 0

The the x- coordinate of the turning point is

x = - \frac{b}{2a}

Given

y = (x + 2)(x - 8) ← expand factors using FOIL

  = x² - 6x - 16 ← in standard form

with a = 1 and b = - 6, thus

x = - \frac{-6}{2} = 3

Substitute x = 3 into the equation for corresponding value of y

y = (3 + 2)(3 - 8) = 5(- 5) = - 25

turning point at (3, - 25 )

7 0
3 years ago
If |14 -2x = 20, x could equal which of the following?
RSB [31]

Answer:

x would equal -3

Step-by-step explanation:

want to get rid of 14 from each side so 14 - 14 would get rid of that 20 - 14 = 6 now you still have a negative 2x

-2x / -2x gives you X to be alone now divide 6 with -2 which gives you -3

8 0
3 years ago
Chapter 8 question 7<br> please help wil mark brainlyest
Alexxandr [17]

Answer:

0.72

Step-by-step explanation:

\cos \: 44 \degree = 0.7193398003 \\  \cos \: 44 \degree =0.72

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3 years ago
Can someone average this out for me and for the term test I made a 36​
Mars2501 [29]

Answer: 70.77 or 71 if rounded up

Step-by-step explanation:

Add all the scores then divide to 18.

8 0
3 years ago
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Am i right?? this is a graded assignment and no links!!
Darya [45]

Answer:

yes

Step-by-step explanation:

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