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3 years ago

MATH HELP ASAP!!! PLSSS

Mathematics

2 answers:

Alex3 years ago

6 0

First one is 13. Second is 9. Third is 5. Fourth is 1.

MAXImum [283]3 years ago

6 0

Step-by-step explanation:

i think the answers are 1)13 2)9 3)5 4)1

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g An urn contains 10 balls: 4 red and 6 blue. A second urn contains 16 red balls and an unknown number of blue balls. A single b

Fed [463]

Answer:

Therefore the of blue in the second urn is 4.

Step-by-step explanation:

Let second urn contain x number of blue ball .

Urn Red Ball Blue Ball Total Ball

1 4 6 10

2 16 x 16+x

Getting a red ball from first urn is $P(R_1)=\frac{\textrm {Number of red ball}}{\textrm {Total ball}}$ $=\frac{4}{10}$

Getting a blue ball from first urn is $P(B_1)=\frac{\textrm {Number of blue ball}}{\textrm {Total ball}}$ $=\frac {6}{10}$

Getting a red ball from second urn is $P(R_2)=\frac{\textrm {Number of red ball}}{\textrm {Total ball}}$ $=\frac{16}{16+x}$

Getting a blue ball from second urn is $P(B_2)=\frac{\textrm {Number of blue ball}}{\textrm {Total ball}}$ $=\frac {x}{16+x}$

Getting two red balls from first and second urn is $=\frac{4}{10}\times \frac{16}{16+x}$

$=\frac{32}{5(16+x)}$

Getting two blue balls from first and second urn is $=\frac{6}{10}\times \frac{x}{16+x}$

$=\frac{3x}{5(16+x)}$

The probability that both balls are the same in color is $=\frac{32}{5(16+x)}+\frac{3x}{5(16+x)}$

Given that the probability that both balls are the same in color is 0.44.

According to the problem,

$\frac{32}{5(16+x)}+\frac{3x}{5(16+x)}=0.44$

$\Rightarrow \frac{32+3x}{5(16+x)} =0.44$

$\Rightarrow \frac {32+3x}{(80+5x)} =0.44$

$\Rightarrow 32+3x =0.44(80+5x)$

$\Rightarrow 32+3x =35.2 +2.2x$

$\Rightarrow 3x -2.2 x= 35.2 -32$

$\Rightarrow 0.8x= 3.2$

$\Rightarrow x = 4$

Therefore the of blue in the second urn is 4.

5 0

3 years ago

Emma started babysitting her neighbor. After babysitting for 5 hours, she made $37.50. What is her babysitting pay rate?

LUCKY_DIMON [66]

Answer:

$7.50

Step-by-step explanation:

Hourly Pay * 5 = 37.5

Rearrange to find the hourly pay

Hourly pay = 37.5 / 5 = 7.5

5 0

3 years ago

Write the equation of a line in slope-intercept form that has a slope of -8 and a y-intercept of (0,3).

Pavel [41]

Y=ax+b
3=-8(0)+b
3=0+b
3=b

Y=-8x+3

(I think this is right, but u might want to double check)

8 0

3 years ago

Warren is on vacation and needs to arrange transportation. A rental car costs 60 dollars per day plus a one-time cost of 14 doll

Vlad1618 [11]

Answer:

The answer is C(x) = 60x + 14 and the answer to the second one is 7 days.

Step-by-step explanation:

C(x) =60x + 14

434 = 60x + 14

-14 -14

420 = 60x

/60 /60

7 = x

x = 7 days

3 0

3 years ago

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What potential rational root is -2/5

vovangra [49]

Answer:

180

Step-by-step explanation:

180 is the left

7 0

3 years ago

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