Three times a number subtracted by 3 is 20

Mathematics

1 answer:

nignag [31]3 years ago

3 0

Answer:

3x - 3 = 20

Step-by-step explanation:

Times is a word that represents multiplication. A number can be represented by x.

3x - 3 = 20

Solving this:

3x - 3 = 20 1. Add 3 on both sides

3x = 23 2. Divide by 3 on both sides

x = 7 2/3

You might be interested in

Simplify the expression. 6p5

Nastasia [14]

If you are considering P of the permutation and combination. Then simply pit the figure 6P5 in calculator and your answer will be 720. Or if not calculator then the formula is P(n,r)= n(factorial)/ (n-r)factorial.

3 0

3 years ago

A standard sheet of paper measures 8.5 x 11 inches. find the areas of one such

Xelga [282]

8.5×11=93.5 because you do length time width to get area.

7 0

3 years ago

A store pays $307 for a refrigerator. The store marks up the price by 38%. What is the

Colt1911 [192]

Answer:

Since the $307 is the buying price of the store which makes it 100%. The store needs to make a profit from the refrigerator so it adds a +38% on the refrigerator making it a value of 138% of $307 which is 138/100 * $307 =$423.66 but we need it to the nearest dollar which will be rounded of to $424 since it passed the .5 mark

Step-by-step explanation:

7 0

2 years ago

A company is producing two types of ski goggles. Thirty percent of the production is of type A, and the rest is of type B. Five

Andrei [34K]

Answer:

The required probability is 0.4828.

Step-by-step explanation:

We are given that a company is producing two types of ski goggles. Thirty percent of the production is of type A, and the rest is of type B.

Five percent of all type A goggles are returned within 10 days after the sale, whereas only two percent of type B are returned.

Let the probability that production is of Type A = P(A) = 30%

Probability that production is of Type B = P(B) = 1 - P(A) = 1 - 0.30 = 70%

Also, let R = event that pair of goggles are returned

So, the probability that type A goggles are returned within 10 days after the sale = P(R/A) = 5%

Probability that type B goggles are returned within 10 days after the sale = P(R/B) = 2%

Now, given a pair of goggles is returned within the first 10 days after the sale, the probability that the goggles returned are of type B is given by = P(B/R)

We will use the concept of Bayes' Theorem to calculate the above probability.

So, P(B/R) = $\frac{P(B) \times P(R/B)}{P(A) \times P(R/A)+P(B) \times P(R/B)}$