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gulaghasi [49]
3 years ago
6

.

Mathematics
2 answers:
borishaifa [10]3 years ago
6 0

Answer:

x=3

y=2x

y= 2×3

y=6

option a is the answer

prisoha [69]3 years ago
3 0
The answer is 6! Multiply 2 x 3 because x = 3 and you will get 6, which is y.
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3. A penny is made by combining 0.1 g of a copper alloy that costs $5.50 per kilogram (1000 grams) with
lbvjy [14]
.0001*5.5 + 1.5*x = 2
x=1.33 kg
6 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
DO THE ATTACHMENT PLEASE IT IS DUE IN LESS THAN 10 MINUTES, OR I GET A PHONE CALL HOME. I WILL GIVE BRAINLEST TO ANYONE WITH THE
pishuonlain [190]
Just pretend it’s a 3d right angle triangle and find the length of the hypotenuse.

d = sqrt(6^2 + 10^2 + 15^2) = 19
8 0
3 years ago
Working together, two ants named Aran and Beatrice can build an ant hill in 10 hours. Aran and Charlie can build the ant hill in
Nookie1986 [14]

Answer:

12

Step-by-step explanation:

7 0
3 years ago
When you square or cube a negative number is it still negative or does it become positive?
Fynjy0 [20]
When you square a negative number, the result is positive.
(-4)^2 = (-4)ª(-4) = 16

When you cube a negative number, the result is negative.
(-4)^3 = (-4)•(-4)•(-4) = -64

Negatives pair up and cancel out, so odd exponents always have one negative unpaired, making the result negative.
6 0
2 years ago
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