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olga_2 [115]
3 years ago
14

what is the answer to 2 1/2 times 4/7? I was wondering because I am horrible at maths and I would like some help. Thanks :)

Mathematics
2 answers:
grin007 [14]3 years ago
5 0
It’s about 1.4285

(2+1/2) + (4/7) =about 1.4285
kogti [31]3 years ago
4 0

It would be 1.4285

2 1/2x4/7= 1.4285

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The volume of a cylinder is 176 π cm and its height is 11 π cm.
Liula [17]

Answer:

r = sqrt(16/pi)

Step-by-step explanation:

Cylinder formula = r^2 x pi x height

176 pi/11pi = 16

16 = r^2 x pi

16/ pi = r^2

r = sqrt(16/pi)

6 0
2 years ago
Find x. Give reasons to justify your solution. b Lines AB and CD are straight lines.
MArishka [77]

Answer:

x = 28

Step-by-step explanation:

Given that lines AB and CD are straight lines that intersects at O, it follows that the pair of opposite vertical angles formed are congruent.

Thus,

<AOD = <BOC

<AOD = 152°

<BOC = 3x + x + (x + 12) (angle addition postulate)

<BOC = 5x + 12

Since <AOD = <BOC, therefore,

152° = 5x + 12 (substitution)

152 - 12 = 5x (subtraction property of equality)

140 = 5x

140/5 = x (division property of equality)

28 = x

x = 28

4 0
3 years ago
I can’t figure this out, any help?
saveliy_v [14]

if the spinner is fair , it will land on green for 60 times , there are 24% chances for the spinner to land on purple ,For 1000 spins it will land 150 times on blue

<h3>What is Probability ?</h3>

Probability can be defined as the study to predict the likelihood of an event.

It has a range from 0 to 1.

Probability if the spinner is fair is 1/5 for each colour.

As it is spun 300 times

(1/5) * 300 = 60 times

So if the spinner is fair , it will land on green for 60 times.

(b) The probability of landing on purple theoretically is 60times , 20 % chances

but it can be seen from the data provided that for 300 spins , the spinner landed for 72 times

which is 24% , i.e. there are 24% chances for the spinner to land on purple.

(c)Theoretically blue has 20% chances 200 times , But it is seen in the data obtained that

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To know more about Probability

brainly.com/question/11234923

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7 0
2 years ago
Which sets of ordered pairs are from linear functions? Select the TWO answers that apply. Group of answer choices {(0,1),(1,2),(
Karo-lina-s [1.5K]

Answer:

  • {(0,1),(1,2),(2,3),(3,4)}
  • {(0,4),(1,6),(3,10),(5,14)}

Step-by-step explanation:

When x-differences are the same, y-differences will be the same for a linear function. When they are not the same, they will be proportional for a linear function.

{(0,1),(1,2),(2,3),(3,4)} - x-differences are all the same; y-differences are all 1 (linear, y=x+1)

{(0,0),(1,1),(2,4),(3,9)} - x-differences are all the same; y-differences increase (this is a quadratic function: y=x^2)

{(1,1),(2,8),(3,27),(4,64)} - x-differences are all the same; y-differences increase (this is a cubic function: y=x^3)

{(0,4),(1,6),(3,10),(5,14)} - x-differences are 1, 2, 2; y-differences are 2, 4, 4, so are proportional to (double) the x-differences (linear; y=2x+4)

5 0
3 years ago
Question 20: Please help what are sin x and cos x?
sweet [91]

Answer:

A is the correct answer.

Step-by-step explanation:

\tan x =   \frac{6}{8}  =  \frac{opposite \: side \: to \:  \angle \: x}{adjacent \: side \: to \:  \angle \: x}  \\  \\ hypotenuse  \\ =  \sqrt{ {(opp. \: side)}^{2} +  {(adj. \: side)}^{2}  }  \\  =  \sqrt{ {6}^{2} +  {8}^{2}  }  \\  =  \sqrt{36 + 64}  \\  =  \sqrt{100}  \\  = 10 \\  \\ \because  \sin (x) =  \frac{opposite \: side \: to \:  \angle \: x}{hypotenuse}  \\  \\   \huge{ \red{ \boxed{\therefore \: \sin (x) =  \frac{6}{10}}}}  \\  \\ \cos (x) =  \frac{adjacent \: side \: to \:  \angle \: x}{hypotenuse}  \\  \\  \huge{ \purple{ \boxed{\therefore \: \cos (x) =  \frac{8}{10} }}} \\

Thus, option A is the correct answer.

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