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Mekhanik [1.2K]
3 years ago
10

Solve 2sin ^2x-sin x-1=0

Mathematics
1 answer:
tia_tia [17]3 years ago
4 0
Consider, pls, the suggested solution.

Answer:
\left[\begin{array}{ccc}x=(-1)^{n+1}* \frac{ \pi}{6} + \pi n\\ \ x= \frac{ \pi}{2} +2 \pi n\end{array}

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I WILL GIVE BRAINLIEST!!! PLS HELP!!!
uranmaximum [27]

Answer:b

Step-by-step explanation:you welcome and thank you

6 0
3 years ago
Tomas is making trail mix using granola and walnuts. He can spend a total of $12 on the ingredients. He buys 3 pounds of
spin [16.1K]

Answer:

The first error that Tomas made was added 6 to both sides of the equation instead of subtracting 6

Step-by-step explanation:

Let

x ----> represents the number of pounds of granola

y ----> represents the number of pounds of walnuts

we know that

The linear equation that represent this scenario is

2x+6y=12 -----> equation A

x=3 -----> equation B

substitute equation B in equation A and solve for y

2(3)+6y=12

6+6y=12

Subtract 6 both sides

6+6y-6=12-6

6y=6

Divide by 6 both sides

6y/6=6/6

y=1

so

The number of pounds of walnuts is 1

therefore

The first error that Tomas made was added 6 to both sides of the equation instead of subtracting 6

8 0
3 years ago
Read 2 more answers
Jaden wants to cover a floor with square titles of the same size. The floor measures 315 inches by 108 inches.
padilas [110]
Each tile must be 9 by 9. 

<span>315 / 9 = 35 </span>

<span>108 / 9 = 12 </span>

<span>A = 35 * 12</span>
7 0
4 years ago
What is 5/16 divided by 2/3
gayaneshka [121]
You take 5/16 division you change it in matplication 3 goes up and 2 comes down so you numbers will be
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8 0
3 years ago
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C

Step-by-step explanation:

6 0
4 years ago
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