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riadik2000 [5.3K]
2 years ago
11

-7x is less than or equal to -21

Mathematics
1 answer:
julsineya [31]2 years ago
6 0
The answer is x=3
if you divide each by -7 to isolate x, it’s equal to positive three because 2 negatives make a positive
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Tasya [4]

Answer:

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Step-by-step explanation:

Conditional Probability

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

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

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

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Cloudy skies

Event B: Rain

20% of all days start with clouds in the air

This means that P(A) = 0.2

50% of rainy days start with rain clouds in the air

50% of 10%. So

P(A \cap B) = 0.5*0.1 = 0.05

What is the probability that it will rain today and ruin your picnic

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.05}{0.2} = 0.25

0.25 = 25% probability that it will rain today and ruin your picnic

3 0
2 years ago
Calculate the percent change in net sales from
oksian1 [2.3K]

Answer:

8.7%

Step-by-step explanation:

Well the net sales of Quarter 1 = 115 whilst the net sales of Quarter 2 = 125.

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To find percentage change, you do 10/115 = 0.0869565217

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So your percentage change is 8.7%.

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Step-by-step explanation:

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madam [21]

Answer:

2 cups

Step-by-step explanation:

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2 years ago
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