1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergio [31]
3 years ago
12

The value

Mathematics
1 answer:
ehidna [41]3 years ago
7 0

Answer:

A

Step-by-step explanation:

Check the solution by substituting x = \frac{\pi }{2} into the left side of the equation

2sin²x - sinx - 1

= 2sin²(\frac{\pi }{2} ) - sin (\frac{\pi }{2} ) - 1

= 2(1)² - 1 - 1

= 2 - 1 - 1

= 0

= right side

\frac{\pi }{2} is therefore a solution to the equation

You might be interested in
. The sum of -8 and a number is at least 9 what is the equation look like​
MA_775_DIABLO [31]

Answer:

-8 + x ≥ 9

Step-by-step explanation:

Let's look at your sentence:

The <u>sum of -8 and a number</u> is <u>at least 9 </u>what is the equation look like​

Sum is the result of adding

At least 9 means that the number is 9 or greater.

So what you have here is an inequality expression:

Sum of -8 and a number

-8 + x

x here is the "number" since we do not know the value we will use "x" to represent that number.

At least 9

At least means that it is equal or greater, so we use this expression ≥

and so we use put that all together

-8 + x ≥ 9

6 0
3 years ago
i need help on this asap please. its two days past due. Teacher said there are only 2 correct answers out of all 12 of these. pl
Blababa [14]

Answer:

Answer:

90°

90°

90°

90°

edc=180-90-53=37by sum of angle of triangle

edf=90-37=53

fed=cde=53alternate angle

fea=180-fae-efa=180-37-90=53

efa=180-90=90linear pair

fae=180-<e-edf=180-90-53=37

eab=90-fae=90-37=53

aeb=180-b-bae=180-90-53=37

4 0
2 years ago
If anybody can help me with questions 1-4 that will be awesome. YOUR A LIFE SAVER!!!
GrogVix [38]

Answer:

1. D

2. C

3. D

4. B

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Help<br> Pls pls pls pls
Ahat [919]

Answer:

Step-by-step explanation: I- I need to go back to school

6 0
3 years ago
What is<br>economic Integration<br>​
aalyn [17]
Economic integration is the unification of economic policies between different states, through the partial or full abolition of tariff and non-tariff restrictions on trade.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Mr. Jenkins has three pieces of rope.
    6·2 answers
  • Is x^2+13x-4=0 a quatratic function? Why?
    6·1 answer
  • What is the distributative answer to 85 divided by 5 answer
    8·1 answer
  • Here are tge ingredients to make 250ml of custard.
    6·1 answer
  • Example<br>2 (3x+11)=10​
    13·2 answers
  • What is the perimeter of this rectangular prism?
    11·1 answer
  • Solve this dude<br> √10² x (6^3) = ?
    9·1 answer
  • Help please I’m confused?? I
    11·1 answer
  • Evaluate.<br><br> 7+22⋅6+23−6<br><br><br> 31<br><br> 33<br><br> 68<br><br> I don't know.
    10·2 answers
  • Which second degree polynomial function has a leading coefficient of -1 and root 4 with multiplicity 2?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!