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yaroslaw [1]
3 years ago
12

Helppppppppppppppppppppppppppppppppppppp

Mathematics
1 answer:
Kryger [21]3 years ago
4 0
The answer to this would be 2
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F(x) = 3x² + 9x – 16<br> Find f(-8)
Nezavi [6.7K]

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

7 0
1 year ago
What is the length of AC?<br><br><br> 3 ft<br><br> 4 ft<br><br> 9 ft<br><br> 18 ft
iragen [17]

Answer: The length of AC is 18 ft.

Step-by-step explanation:

By the given diagram,

AM = MB and CN = NB

M and N are the mid points of the sides AB and CB respectively,

Thus, by the mid point theorem,

MN ║ AC,

By the alternative interior angle theorem,

∠BMN ≅ ∠BAC

∠BNM ≅ ∠BCA

Thus, by AA similarity postulate,

ΔBMN ≅ ΔBAC

By the property of similar triangles,

\frac{BM}{BA}=\frac{MN}{AC}

\frac{BM}{BM+MA}=\frac{MN}{AC}

\frac{4}{4+4}=\frac{9}{AC}

\frac{4}{8}=\frac{9}{AC}

4AC=72\implies AC = 18\text{ ft}

Thus, The length of AC is 18 ft.

5 0
3 years ago
Read 2 more answers
Grant plans to evaporate
ale4655 [162]
What do you mean by this? is there supposed to be a link attached?
6 0
3 years ago
Which are correct represention of the inequality-3(2x-5)&lt;5(2-x)
Triss [41]
° -3 × (2×-5)-(5×[2-x])<0


° (0-(3×[2x-5]))-5×(2-x)<0


° (0-3×[2x-5])-5×(2-x)<0


° 5- x < 0


° x-5 > 0

So, that means your answer is--> "x>5"


4 0
3 years ago
Read 2 more answers
Sin²a+sin²a.tan²a=tan²a​
wolverine [178]

Answer:

# sin²A (1+tan²A)

# sin²A(sec²A)

# sin²A(1/cos²A)

# sin²A/cos²A=tan²A

6 0
3 years ago
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