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Paladinen [302]

3 years ago

13

the ratio of red marbles to blue marbles in a bag is 2 to 3 .which of the following could be the number of red and blue marbles

in the bag

2 answers:

nlexa [21]3 years ago

8 0

Answer should be: 1/2

Andreas93 [3]3 years ago

5 0

Answer:

1/2

Step-by-step explanation:

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6 An account pays

Sergio039 [100]

Answer: £122.4

Step-by-step explanation:

Given

The rate of interest is 4%

The principal invested is £1500

the time period is 2 years

Compound interest is given by

$C.I.=P(1+r\%)^t-P$

put values

$C.I.=1500(1+0.04)^2-1500\\C.I.=1500[1.04^2-1]\\C.I.=1500[1.0816-1]\\C.I.=1500\times 0.0816\\C.I.=122.4$

Therefore, interest earned is £122.4

5 0

2 years ago

What is the square root of Pi

Sauron [17]

The square root of Pi is approximately 1.77245.

8 0

3 years ago

Read 2 more answers

Yesterday, 5/7 of the Latin students took the Latin placement exam. Meanwhile, 64 out of 89 Greek students took the Greek placem

erica [24]

Answer:

Greek

Step-by-step explanation:

compare 5/7 and 64/89

5/7 = .71429

64/89= .71910

64/89 is the greater fraction

4 0

3 years ago

Read 2 more answers

Sin2alpha+cos2alpha-cos6alpha/sin4alpha+2sin²alpha-1<br><br> if alpha is -135°

balandron [24]

Answer:

$= \frac{\sin(2 \alpha ) + \cos(2 \alpha ) - \cos(6 \alpha ) }{ \sin(4 \alpha ) + 2 { \sin }^{2} \alpha - 1} \\ = \frac{ \sin( - 270) + \cos( - 270) - \cos( - 810) }{ \sin( - 540) + 2 { \sin }^{2}( - 135) - 1 } \\ = \frac{1}{ - 2} \\ = - 0.5$

5 0

2 years ago

Find the coefficient of correlation between and X and Y if covariance between X and Y is 15 and the variance of X and Y are resp

IRINA_888 [86]

Answer:

0.95

Step-by-step explanation:

$Correlation \ coefficient \ (r) = \dfrac{covaraince \ between \ X \ and \ Y }{SD_X \times SD_Y }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{10^{1/2} \times 25^{1/2} }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{3.162 \times 5 }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{15.81 }$

$Correlation \ coefficient \ (r) \simeq 0.95$

5 0

2 years ago