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sukhopar [10]
3 years ago
7

Solve x2 + x - 72 = 0

Mathematics
1 answer:
denis23 [38]3 years ago
5 0

The correct answer is

x = 9, -8

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If tan x =1/2<br> find sin x<br> 2
irina1246 [14]

Answer:

t

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Step-by-step explanation:

tan

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Calculator and unit circle give 2 solutions for (0, 360) -->

t

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General answer:

t

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6 0
3 years ago
Use the distributive property to write an equivalent expression: -(n+4)*
stealth61 [152]

Answer: -n-4

Step-by-step explanation:

Distribute the - to n and 4

6 0
3 years ago
Helppppppppppp please
LenaWriter [7]

Answer:

x = 60°

Step-by-step explanation:

AOB    Center: O      AB: diameter

arc ADB = 180°

arc DB = 180 - arc AD = 80°

x = 1/2 x ( arc DB + arc AC) = 1/2 x (80 + 40) = 60°

3 0
3 years ago
The symbol 5! means 5* 4*3*2*1. What is the greatest odd integer that is a factor of 5!?
NNADVOKAT [17]

Answer:

15

Step-by-step explanation:

5 ! = 120

Since 5 ! = 5 × 4 × 3 × 2 × 1, then

5 × 3 = 15 is the greatest odd factor of 5 !

4 0
3 years ago
What are the exact solutions of x2 - 5x - 1 = 0?.
borishaifa [10]
x^2-5x-1=0\\\\a=1;\ b=-5;\ c=-1\\\Delta=b^2-4ac\\\\\Delta=(-5)^2-4\cdot1\cdot(-1)=25+4=29 \ \textgreater \  0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ \dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{5-\sqrt{29}}{2\cdot1}=\boxed{\dfrac{5-\sqrt{29}}{2}}\\\\x_2=\dfrac{5+\sqrt{29}}{2\cdot1}=\boxed{\dfrac{5+\sqrt{29}}{2}}
8 0
3 years ago
Read 2 more answers
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