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Elis [28]
3 years ago
13

Please help if you would be so kind, it’s geometry:

Mathematics
1 answer:
maks197457 [2]3 years ago
8 0

Answer:

Step-by-step explanation:

x+(4x-8)+(x+8) = 180

x = 30

∠C = x+8 = 38°

height = 7sin38°

area =0.5·13·7sin38° ≅ 28.0126 cm²

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HELPP PLEASE AND GET POINTS
MArishka [77]

Answer:

112

Step-by-step explanation:

cause if you calculated it it will be 112.2222 so the closest thing is 112

3 0
2 years ago
oshua is planning the awards breakfast for the freshman class. The catering company charges a $350 fee for the rental materials,
S_A_V [24]
Firsly remove the $350
$625-$350=$275
Each person is $6,so divide that from $275
275/6=45R5
The remaining $5 cannot be used to pay for another person,so we leave it as extras.
Therfore,45 people were at the the party.
4 0
2 years ago
How many moles of oxygen are required to burn 3.0 mole of C10H8 (naphthalene)?
astra-53 [7]

Answer: 36 moles oxygen

Step-by-step explanation:

C10H8 + 12O2 ====》 10CO2 + 4H2O

From the equation of the reaction,

1 mole of napth requires 12 moles of O2

3 moles of napth would require x moles O2

X = (3 * 12) / 1

X = 36 moles of oxygen.

Therefore 3 moles of naphtalene (C10H8) would require 36 moles of oxygen

6 0
3 years ago
34.15 round to the nearest hundred
I am Lyosha [343]
It’s zero, I think. Because
3 doesn’t round up. It’s stays the same. But since there is nothing in the hundred place. It is 0.
4 0
3 years ago
What are the zeros of (x-2)(x^2-9)
WARRIOR [948]
(x-2)(x^2-9)=0\iff x-2=0\ or\ x^2-9=0\\\\x-2=0\ \ \ \ |add\ 2\ to\ both\ sides\\\\\boxed{x=2}\\\\x^2-9=0\ \ \ \ |add\ 9\ to\ both\ sides\\\\x^2=9\iff x=\pm\sqrt9\to \boxed{x=-3\ or\ x=3}\\\\Answer:\boxed{x=-3\ or\ x=2\ or\ x=3}
3 0
2 years ago
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