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3 years ago

One fourth of a number decreased by 10 is negative 50 find the number

1 answer:

5 0

THE NUMBER WOULD BE -160. One-fourth of -160 is -40, and -40 decreased by 10 would be -150, because ( -40 - 10 = -50. ) It's quite simple. All you had to do was find a number that, when multiplied by 4, would equal a number that when decreased by 10 would be -50.

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The probability that Paul wins a raffle is given by the expression n/n+6. Write down an expression, in the form of a combined si

Elza [17]

Answer:

$P(W') = \frac{6}{n+6}$

Step-by-step explanation:

Let P(W) represents the probability that Paul wins

Let P(W') represents the probability that Paul does not win

Given

$P(W) = \frac{n}{n+6}$

Required

$P(W')$

In probability, the sum of opposite probability equals 1;

This implies that

$P(W) + P(W') = 1$

Substitute $P(W) = \frac{n}{n+6}$ in the above equation

$P(W) + P(W') = 1$ becomes

$\frac{n}{n+6}+ P(W') = 1$

Subtract $\frac{n}{n+6}$ from both sides

$\frac{n}{n+6} - \frac{n}{n+6} + P(W') = 1 - \frac{n}{n+6}$

$P(W') = 1 - \frac{n}{n+6}$

Solve fraction (start by taking the LCM)

$P(W') = \frac{n + 6 - n}{n+6}$

$P(W') = \frac{n - n + 6}{n+6}$

$P(W') = \frac{6}{n+6}$

Hence, the probability that Paul doesn't win is $P(W') = \frac{6}{n+6}$

6 0

3 years ago

A store has a 40\%40%40, percent off sale on headphones. With this discount, the price of one pair of headphones is \$36$36dolla

zloy xaker [14]

Let
X=the original price of the pair of headphones
then
if the % off sale is 40--------------- > (1-0.40)*X=$36
x=36/0.60=60

the answer is
the original price of the pair of headphones was $60

8 0

3 years ago

Read 2 more answers

Find the radius of a sphere with a volume of 4.5π cubic centimeters.

garik1379 [7]

R≈1.02
yup
yup yup yup yup

8 0

3 years ago

Hey so yea... . . Help

Lyrx [107]

N = 1/4 I hope this helps

8 0