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Karo-lina-s [1.5K]
2 years ago
6

Need help please and thank you?!

Mathematics
2 answers:
lisov135 [29]2 years ago
8 0

Answer:

1)50.3

2) 113

Step-by-step explanation:

I hope this helps!

PilotLPTM [1.2K]2 years ago
7 0

Answer:

3. 50.27 inches squared

4. 113.1 km squared

Step-by-step explanation:

3. A=πr^2

π*16

4. A=πr^2

π*36

Have a good day :)

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How do I round 0.33375
nirvana33 [79]

Answer: to the tenth place: 0.3

To the hundredth place: 0.33

Thousandths: 0.334

Whole number: 0

Step-by-step explanation:

6 0
3 years ago
I forgot how to do most of this yet they gave it to me as hw ‍♀️
svp [43]

18.

-2(-9)+3

18+3

21

Explanation: -2(-9) When multiplying numbers that have both a negative sign, the answer is positive. Multiply normally.

19.

-6(-4)0

24(0)

0

Explanation: -6(-4) As I explained before, the answer would be positive.

24(0) Every number multiplied by 0 is 0.

20.

56+(-7)

49

Explanation: 56+(-7) Any problem like this is just basically going to be 56-7.

21.

-36+(-4)

-40

Explanation: -36+(-4) You are simply adding normally then adding the sign. This will only work if the signs are the same. (Signs are positive and negative.)

   

8 0
3 years ago
Read 2 more answers
Please help i really need this
creativ13 [48]

Answer:

D

Step-by-step explanation:

You have the correct answer.

6 0
2 years ago
Prove that sin²∅+cos²∅=1 ?​
sasho [114]

Step-by-step explanation:

Let ABC be a right angled triangle where there's a right angle in B . Let the measure of the angle BAC be ∅. So,

\sin(∅)  =  \frac{BC}{AC}

=  >   {\sin}^{2}∅ =  \frac{ {BC}^{2} }{ {AC}^{2} }

Also,

\cos(∅)  =  \frac{AB}{AC}

=  >  { \cos}^{2}∅ =  \frac{ {AB}^{2} }{ {AC}^{2} }

Now adding the values of sin^2∅& cos^2∅,

{ \sin}^{2} ∅ +  { \cos}^{2} ∅ =  \frac{ {BC}^{2} }{ {AC}^{2} }  +  \frac{ {AB}^{2} }{ {AC}^{2} }

=  >  { \sin}^{2} ∅ +  { \cos}^{2} ∅ =  \frac{ {AB}^{2} +  {BC}^{2}  }{ {AC}^{2} }

But we know that

{AC}^{2}  =  {AB}^{2}   +  {BC}^{2} by applying Pythagorean Theorem

So ,

=  >  { \sin}^{2} ∅ +  { \cos}^{2} ∅ =   \frac{ {AC}^{2} }{ {AC}^{2} }  = 1

7 0
2 years ago
Which is a correct classification for the triangle?
masya89 [10]
B) right angle triangle
angles in a triangle add up to 180 degrees
31+59=90
180-90=90
90 degrees is a right angle
4 0
2 years ago
Read 2 more answers
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