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Juliette [100K]
3 years ago
7

Please need help on this

Mathematics
1 answer:
dedylja [7]3 years ago
4 0

Answer:

Step-by-step explanation:

the a = 30

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7 x 28<br> = 7(20 + 8<br> = (7 x 20)+(7<br> = 140 + 56<br> = 196
adell [148]

Answer:B

Step-by-step explanation:

5 0
3 years ago
The percentage of people under the age of 18 was 23.5% in New York City, 25.8% in Chicago, and 26% in Los Angeles.
Hatshy [7]

Answer:

0.0158 = 1.58% probability that all of them are under 18.

Step-by-step explanation:

Probability of independent events:

If three events, A, B and C are independent, the probability of all happening is the multiplication of the probabilities of each happening, that is:

P(A \cap B \cap C) = P(A)P(B)P(C)

The percentage of people under the age of 18 was 23.5% in New York City, 25.8% in Chicago, and 26% in Los Angeles.

This means that P(A) = 0.235, P(B) = 0.258, P(C) = 0.26

If one person is selected from each city, what is the probability that all of them are under 18?

Since the three people are independent:

P(A \cap B \cap C) = 0.235*0.258*0.26 = 0.0158

0.0158 = 1.58% probability that all of them are under 18.

8 0
3 years ago
How do you do this?!<br> (2w-1)/(4)=(2-w)
nikklg [1K]

Answer:

w = 3 is your answer.

Step-by-step explanation:

You want to get w by itself.

<em>(2w - 1)/(4) = 2 - w         </em><u>You will add the w on both sides.</u>

<em>(3w - 1)/(4) = 2                </em><u>You will multiply 4 on both sides.</u>

<em>3w - 1 = 8                       </em><u>You will add 1 on both sides.</u>

<em>3w = 9                            </em><u>You will divide 3 on both sides.</u>

w = 3 is your answer.

6 0
2 years ago
Here are three diffrent recipes for orangey-pinapple juice. Two of these mixtures taste the same and one taste diffrent. Recipe
arsen [322]
Recipe 1 : 4 cups oj with 6 cups pineapple.....ratio of 4/6 reduces to 2/3

recipe 2 : 6 cups oj with 9 cups pineapple...ratio 6/9 reduces to 2/3

recipe 3 : 9 cups oj with 12 cups pineapple....ratio 9/12 reduces to 3/4

so recipe 1 and recipe 2 will taste the same because the ratios are the same...and recipe 3 will be the different tasting one because it has a different ratio mixture
8 0
3 years ago
Can someone please help me solve this?
aleksklad [387]

Answer:

centre = (-5, -4)

radius = 7.42

Step-by-step explanation:

The general form for center-radius is

(x - h)² + (y - k)²= r²

Center = (h, k)

Radius = r

Rearrange the equation.

(x² + 10x) + (y² + 8y) - 14 = 0

Add 14 on both sides.

(x² + 10x) + (y² + 8y) = 14

(10/2)² = 25

(8/2)² = 16

Add 25 and 16 to both sides.

(x² + 10x + 25) + (y² + 8y + 16) = 14 + 25 + 16

Factor left side of the equation.

(x+5)² + (x+4)² = 55

(55) = (7.416198)²

(x+5)² + (x+4)² = 7.42²

The radius is 7.42.

The centre is at (-5, -4).

8 0
3 years ago
Read 2 more answers
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