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3 years ago

15

Emily and sarah had a total of$80. After Sarah spent 1/3 of her money and Emily spent $17, Emily had twice as much money as Sara

h. How much more money did Emily have at first?

1 answer:

pshichka [43]3 years ago

6 0

You need to add ur fraction and add and sub the rest

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Determine if the events A and B are independent. Show all steps.

zmey [24]

<u><em></em></u>

Answer:

$P(A U B ) = \frac{13}{25}$

Step-by-step explanation:

<u><em>STEP:-1</em></u>

Given that events A and B are independent then

P(A ∩B ) = P(A) P(B)

Given that P(A) = 2/5 and P(B) = 1/5

<u><em>STEP:- 2</em></u>

P(A ∩B ) = P(A) P(B)

$P(A U B) = P(A) +P(B) - P(A n B )$

$P(A U B ) = P(A) +P(B) - P(A) P(B)$

<u><em>Step(iii):-</em></u>

<u><em></em></u> $P(A U B ) = \frac{2}{5} +\frac{1}{5} - \frac{2}{5} X \frac{1}{5}$ <u><em></em></u>

<u><em></em></u> $P(A U B ) = \frac{3}{5} - \frac{2}{5} X \frac{1}{5}$ <u><em></em></u>

<u><em></em></u> $P(A U B ) = \frac{3}{5} - \frac{2}{25}$ <u><em></em></u>

<u><em></em></u> $P(A U B ) = \frac{15-2}{25} = \frac{13}{25}$ <u><em></em></u>

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4 0

3 years ago

9(u-2)+15u=8.25<br><br> QUICK!!!!!!!

Aneli [31]

Im pretty sure its 1.09375

7 0

3 years ago

Read 2 more answers

Need help with this question

goldfiish [28.3K]

Answer:

x = 12

Step-by-step explanation:

Complementary angles add up to have a sum of 90 degrees. We can create an equation and solve for x.

3x + 6x - 18 = 90

~Simplify

9x - 18 = 90

~Add 18 to both sides

9x = 108

~Divide 9 to both sides

x = 12

Best of Luck!

4 0

3 years ago

The Choi family bought 6 bags of cookies. Each bag had 15 cookies. They have since eaten 28 of the cookies. How many cookies do

Norma-Jean [14]

Answer:

They have 62 cookies left

Step-by-step explanation:

6 X 15 = 90

90 - 28 = 62

3 0

3 years ago

In triangle XYZ, m∠Z > m∠X + m∠Y. Which must be true about △XYZ?

Ne4ueva [31]

Answer:

I don't understand

Step-by-step explanation:

6 0

3 years ago