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3 years ago

12

Chris Is saving money to buy a game. So far he has saved $12, which is three-fourths of the total cost of the game. How much doe

s the game cost?

1 answer:

erma4kov [3.2K]3 years ago

3 0

Answer: His game cost $16

Explanation: 12 is the 3/4th of 16
1/2(half) is 8 and 1/4 is 4

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There are 10 marbles in a bag. Four are blue, 3 are black and 2 white and 1 red. If the marbles are not replaced once they are d

stich3 [128]

<u>Given</u>:

Given that there are 10 marbles in a bag. 4 are blue, 3 are black, 2 are white and 1 is red.

The marbles are selected by not replacing the drawn ones.

We need to the probability of selected a black marble and then a white marble without replacement.

<u>Probability</u>:

Let B denote the black marble.

Let W denote the white marble.

The probability of selecting a black marble is $P(B)=\frac{3}{10}$

The probability of selecting a white marble without replacement is $P(W)=\frac{2}{9}$

The probability of selecting a black marble and then a white marble without replacement is given by

$P(B \ and \ W)=P(B) \cdot P(W)$

Substituting the values, we get;

$P(B \ and \ W)=\frac{3}{10} \cdot \frac{2}{9}$

$P(B \ and \ W)=\frac{6}{90}$

$P(B \ and \ W)=\frac{1}{15}$

Thus, the probability of selecting a black marble and then a white marble without replacement is $\frac{1}{15}$

4 0

3 years ago

What would the answer to this be?

s344n2d4d5 [400]

<u>STEPS:</u>

1) set up an equation. use x as a variable

  2x + 3x = 25

2) solve the equation for x:

  5x = 25
x = 5

3) Now that you know the value of x, substitute it into the expression for how any girls there are, which is "3x" (since the ratio of BOYS to GIRLS is 2:3):

  3x
= 3(5)
= 15

So 15 is your answer, and there are <u>15 girls in the class.</u>

4 0

3 years ago

Read 2 more answers

The equation y=ax describes the graph of a line.if the value of a is positive,the line

ahrayia [7]

If the value of a is positive, the line slopes upwards.

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3 years ago

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3x +5 = 2x+8 how do i solve?

Blababa [14]

<em>Answer,</em>

<em><u>X = 3</u></em>

<em>Explanation,</em>

<em><u>Subtract 5 from both sides.</u></em>

<em>3x+5-5=2x+8-5</em>

<em><u>Simplify.</u></em>

<em>3x=2x+3</em>

<em><u>Subtract 2x from both sides.</u></em>

<em>3x-2x=2x+3-2x</em>

<em><u>Simplify.</u></em>

<em>x=3</em>

<u><em>Hope this helps :-)</em></u>

4 0

3 years ago

Seattle, WA and San Francisco, CA lie on the same longitudinal line. San Francisco is at 38° latitude and Seattle is at 47° lati

Helen [10]

Step 1.

Calculate measure of angle α:

$47^o-38^o=9^o$

Step 2.

Calculate what fraction of the angle 360° is the angle α:

$\dfrac{9^o}{360^o}=\dfrac{1}{40}$

Step 3.

Calculate the circumference of the Earth (circle):

$C=2\pi r\to C=2\pi\cdot4000=8000\pi\ mi$

Step 4.

The length of arc is equal 1/40 of the circumference:

$\dfrac{1}{40}C=\dfrac{1}{40}\cdot8000\pi=200\pi\ mi$

$\pi\approx3.14\to\dfrac{1}{40}C\approx200\cdot3.14=628\ mi$

<h3>Answer: A) 628 miles</h3>

7 0

4 years ago