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elena55 [62]
1 year ago
8

F(x) = 3x² + 9x – 16 Find f(-8)

Mathematics
1 answer:
Nezavi [6.7K]1 year ago
7 0

Answer: 104

Step-by-step explanation:

f(-8) represents f(x) evaluated at x=-8.

f(-8)=3(-8)^2 +9(-8)-16\\\\=192-72-16\\\\=120-16\\\\=104

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Answer:

x = 7

Step-by-step explanation:

3x²+5=152

3x²=147

x²=147/3

x² = 49

x = 7

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2 years ago
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A is directly proportional to b such that a = 2b. what is a if B =3? Also, what is b if a =7?
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If b was 3 a will be 6 because 2*3=6
and for the second part b will be 3.5 because 2*3.5=7
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Artemis seeks knowledge of the width of Orion's Belt, which is a pattern of stars in the Orion constellation. She has previously
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Answer:

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Step-by-step explanation:

So we want to find the distance between Alnitak and Mintaka, which is the Orions belts

Let the distance between the Alnitak and Mintaka be x,

Then applying cosine

c²=a²+b²—2•a•b•Cosθ

The triangle is formed by the 736 light-years and 915 light years

Artemis from Alnitak is

a = 736lightyear

Artemis from Mintaka is

b = 915 light year

The angle between Alnitak and Mintaka is θ=3°

Then,

Applying the cosine rule

c²=a²+b²—2•a•b•Cosθ

c² =736² + 915² - 2×, 736×915×Cos3

c² = 541,696 + 837,225 - 1,345,034.1477702404

c² = 33,886.85222975954

c = √33,886.85222975954

c = 184.0838184897 light years

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3 0
3 years ago
Find the GCF of 38, 76, and 114.
valentina_108 [34]
  • Answer:

<em>GCF = 38</em>

  • Step-by-step explanation:

<em>38 = 2×19</em>

<em>76 = 4×19 = 2²×19</em>

<em>114 = 2×3×19</em>

<em>GCF = 2×19 = 38</em>

3 0
3 years ago
You purchase 3 items<br>$26, $30 and $7. If tax is<br>6.8%, what is the total<br>price.​
ludmilkaskok [199]

Answer:

$67.28

Step-by-step explanation:

5 0
3 years ago
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