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bixtya [17]
3 years ago
15

Explain, step by step, how to arrive at a single rational number to represent the following expression. Show both a written expl

anation and the related math work for each step. 1 - 3/4 + (-12 1/4)
Mathematics
1 answer:
Neporo4naja [7]3 years ago
7 0

Answer:

-30

Step-by-step explanation:

first you should complete the equition of bracket

1-3/4+(-121/4)

= 1-3/4+(-30.25)

= 1-0.75+(-30.25)

=0.25+(-30.25)

=-30

hence the right answer is -30 :)

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<u>Answer:</u>

The correct answer option is 43%.

<u>Step-by-step explanation:</u>

We are given that 70% of students have blue eyes, 45% have dark hair, and 30% have blue eyes and dark hair.

We are to find the probability of a student getting selected will have dark hair with blue eyes.

P(D|B) = P(D∩B) / P(B)

Substituting the given values in it to get:

P(D|B) = 0.3 / 0.7 = 0.428

Rounding it to the nearest whole percent we get:

0.428 × 100 = 42.8% ≈ 43%

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3 years ago
Can someone help me
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Answer:

Step-by-step explanation:

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Answer:

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