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4 years ago

Solve the equation.

Mathematics

1 answer:

Kisachek [45]4 years ago

5 0

Answer:

B. 2.9

Step-by-step explanation:

3(2y - 0.3) = 19.4 - y

An easier way to find y is to try using all of your answer choices. For example, let's try using our answer choice, B.

3(2 × 2.9 - 0.3) = 16.5

19.4 - 2.9 = 16.5

Now, we have our answer, B. 2.9.

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The ratio of Mollie’s age to Heather’s age is 4:9 Heather is 40 years older than Mollie

pav-90 [236]

Answer:

I believe it would be 90

Step-by-step explanation:

6 0

3 years ago

Find the fifth roots of 243(cos 260° + i sin 260°)

Charra [1.4K]

<span>use De Moivre's Theorem:

⁵√[243(cos 260° + i sin 260°)] = [243(cos 260° + i sin 260°)]^(1/5)

= 243^(1/5) (cos (260 / 5)° + i sin (260 / 5)°)

= 3 (cos 52° + i sin 52°)

z1 = 3 (cos 52° + i sin 52°) ←← so that's the first root

there are 5 roots so the angle between each root is 360/5 = 72°

then the other four roots are:

z2 = 3 (cos (52 + 72)° + i sin (52+ 72)°) = 3 (cos 124° + i sin 124°)

z3 = 3 (cos (124 + 72)° + i sin (124 + 72)°) = 3 (cos 196° + i sin 196°)

z4 = 3 (cos (196 + 72)² + i sin (196 + 72)°) = 3 (cos 268° + i sin 268°)

z5 = 3 (cos (268 + 72)° + i sin (268 + 72)°) = 3 (cos 340° + i sin 340°) </span>

3 0

3 years ago

This season, the probability that the Yankees will win a game is 0.49 and the probability that the Yankees will score 5 or more

yanalaym [24]

Answer:

0.226 = 22.6% probability that the Yankees will lose when they score 5 or more runs

Step-by-step explanation:

Conditional probability:

We use the conditional probability formula to solve this question. It is

In which

P(B|A) is the probability of event B happening, given that A happened.

is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

If the Yankees score 5 or more runs, either they win, or they lose. The sum of these probabilities is 1.

Probability that the Yankees win:

Event A: Scoring 5 or more runs.

Event B: Winning

The probability that the Yankees will score 5 or more runs in a game is 0.53.

This means that

The probability that the Yankees win and score 5 or more runs is 0.41.

This means that

0.774 probability that the Yankees will win when they score 5 or more runs

What is the probability that the Yankees will lose when they score 5 or more runs?

p + 0.774 = 1

p = 1 - 0.774

p = 0.226

0.226 = 22.6% probability that the Yankees will lose when they score 5 or more runs

4 0

3 years ago

Bettina is measuring the food for her farm animals. She has 265 grams of corn, 500 grams of hay, and 495 grams of oats. What is

Mrac [35]

Answer

260 kilograms

Step-by-step explanation:

the correct answer is 260 kg

6 0

3 years ago

3x^2 y^7 • 5y^8 x^4<br> someone help<br> plz

ale4655 [162]

Answer:

15x^6y^15

Other:

Brainliest? Thanks!

5 0

3 years ago