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3 years ago

Find the average mark10,15,12,18,22,25,30,27,40,21

Mathematics

2 answers:

frez [133]3 years ago

6 0

Answer:

10+15+12+18+22+25+30+27+40+21=220

220/10=22

Answer-:22

Step-by-step explanation:

zubka84 [21]3 years ago

5 0

Answer:

add everything then divide by 10 your answer is 22

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I need help ASAP!! If you know what you’re doing go ahead and answer but if you don’t, don’t even bother thanks

BaLLatris [955]

Answer:

133.97 cm³

Step-by-step explanation:

The volume of a cone is given by:

$V = \frac13 \pi r^2h$

r is half the diameter, so 4 cm

h is 8 cm

So:

V= 1/3 * 3.14 * 16 * 8 ≈ 133.97 cm³

7 0

3 years ago

Read 2 more answers

Sin15°+tan65°=cot25°+cos75°

kifflom [539]

Step-by-step explanation:

L.H.S =

sin15°+tan65°

sin(90°-75°)+tan(90°-25°)

cos75°+cot25°

or; cot25°+ cos75°. R.H.S

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2 years ago

What is cos theta when sin theta = sqrt 2/3

Fittoniya [83]

Answer:

Value of cosθ is ±√7/3 .

Step-by-step explanation:

According to the Question , value of :

$\red{\implies sin\theta = \dfrac{\sqrt2}{3}}$

And , we know the identity of sine and cosine as ,

$\boxed{\pink{\sf\implies sin^2\theta + cos^2\theta = 1} }$

Using , this identity we have ;

$\implies sin^2\theta + cos^2\theta = 1 \\\\\implies \bigg( \dfrac{\sqrt2}{3}\bigg)^2 + cos^2\theta = 1 \\\\\implies \dfrac{2}{9} + cos^2\theta = 1 \\\\\implies cos^2\theta = 1 - \dfrac{2}{9} \\\\\implies cos^2\theta = \dfrac{9-2}{9} \\\\\implies cos\theta = \sqrt{\dfrac{7}{9}} \\\\\underline{\boxed{\blue{\bf \implies cos\theta = \pm \dfrac{\sqrt 7 }{3}}}}$

Now , here since θ is in 2nd quadrant and in 2nd quadrant cos is negative . Hence ,the value of cos will be :

$\boxed{\orange{\bf \implies cos\theta =-\dfrac{\sqrt7}{3}}}$

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2 years ago

WORTH ALOT OF POINTS PLEASE HELP. Nathaniel is a salesperson who sells computers at an electronics store. He makes a base pay am

Rzqust [24]

Answer: 2

Step-by-step explanation:

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2 years ago

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One ball is to be selected from a box containing red, white, blue, yellow, and green balls. If the probability that the selected

ZanzabumX [31]

Answer:

30% probability that it will be yellow, or green

Step-by-step explanation:

The urn has red, white, blue, yellow, and green balls.

Each ball is chosen with the following probabilities:

1/10 = 10% probability it is red

2/5 = 40% probability it is white

1/5 = 20% probability it is blue.

p probability it is yellow or green

What is the probability that it will be yellow, or green

The sum of all probabilities is 100%. So

10 + 40 + 20 + p = 100

p = 30

30% probability that it will be yellow, or green

5 0

3 years ago

Find the average mark10,15,12,18,22,25,30,27,40,21​

Find the average mark10,15,12,18,22,25,30,27,40,21