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Over [174]
3 years ago
6

Find the roots. Answer the question below.

Mathematics
1 answer:
12345 [234]3 years ago
8 0

Answer:

roots: -4 and 7

Step-by-step explanation:

where the graph crosses the x axis is where the roots are located

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Solve the equation on the interval [0, 2pi) <br><br> 2 cos^2 (theta/2) - 3 cos theta = 0
Ksivusya [100]
Hello : 
by idetity : 1+cos(2a) = 2cos²(a)
let : a = <span>θ/2
1+cos(2×</span>θ/2)=2cos²(θ/2)
1+cos(θ) = 2cos²(θ/2)
solve :  2 cos^2 (θ/2) - 3 cos(θ) = 0   ......(1)
(1) : 1+cos(θ)-3 cos(θ) =0
2cos(θ)  = 1 

cos(θ) = 1/2
in : [0, 2π<span>[ 
</span>( θ = π/3) or (θ = 5π/3)
3 0
3 years ago
What is the value of x in the equation of 4x + 1.3 = - 7.9
il63 [147K]

Answer:

x = -2.3

Step-by-step explanation:

4x + 1.3 = -7.9

First we want to combine the like terms.

Subtract 1.3 from both sides.

4x = -9.2

Now we want to isolate x by dividing both sides by 4.

x = -2.3

Check your answer by plugging x back into the original equation.

4x + 1.3 = -7.9

4(-2.3) + 1.3 = -7.9

Multiply.

-9.2 + 1.3 = -7.9

Add.

-7.9 = -7/9

Your answer is correct.

Hope this helps!

6 0
3 years ago
Read 2 more answers
What is the sum of 7/100 and 1/10
labwork [276]

Answer:

Step-by-step explanation:

To add fractions you need equal denominators

7/100+(1/10)(10/10)

7/100+10/100

17/100 (or 0.17 as a decimal)

8 0
3 years ago
I have a few absolute value questions 20 POINTS AND BRAINLIEST TO THE RIGHT ANSWER
rjkz [21]
1) 3
2) 8
3)10
4)-4
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3 0
3 years ago
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EVERYONE, PLEASE HELP I NEED THIS DONE
zimovet [89]

Answer:

\frac{4}{5}

Step-by-step explanation:

\frac{32}{40}

Both 32 and 40 are divisible by 8.
32÷8=4

40÷8=5

Thus, the simplest form is \frac{4}{5}

7 0
2 years ago
Read 2 more answers
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