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3 years ago

Which is the best way to solve the equation x2 = n?

Mathematics

1 answer:

Gnom [1K]3 years ago

7 0

$n$ - no solutions in real numbers

$n=0 \Rightarrow x=0$

$n>0 \Rightarrow x=\sqrt n \vee x=-\sqrt n$

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What property is illustrated by the fact that 95(27+44)=95.27.+95.44}=?

Oduvanchick [21]

Identity property of addition

4 0

3 years ago

Write the inverse of the conditional statement. If a shape is a rhombus, then it has four congruent sides.

Vaselesa [24]

You write the inverse of a conditional statement by negating both the hypothesis and the conclusion.

So, the inverse of

$p\implies q$

$\lnot p \implies \lnot q$

So, in your case, the inverse of your statement is

If a shape is not a rhombus, then it doesn't have four congruent sides.

6 0

3 years ago

The probability that a car has a certain factory defect is 825. The probability that a car has a certain factory defect and need

ipn [44]

Answer:

90.91% probability that a car needs an oil change given that it has a certain factory defect

Step-by-step explanation:

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 problem, we have that:

Event A: having a factory defect.

Event B: needing an oil change.

The probability that a car has a certain factory defect is 825.

So $P(A) = 0.825$

The probability that a car has a certain factory defect and needs an oil change is 750.

So $P(A \cap B) = 0.75$

What is the probability that a car needs an oil change given that it has a certain factory defect

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.75}{0.825} = 0.9091$

90.91% probability that a car needs an oil change given that it has a certain factory defect

5 0

4 years ago

An equation is shown below:

Airida [17]

So you would do 5*2x +5*-8 +15=-15
Then simplify so it would be 10x + -40 + 15 = -15
Then add -40 and 15 together
Then it would be 10x + -25 = -15
Then add 25 to -25 and -15
So it would be 10x = 10
And then divide 10 from 10 with would be 1 so x = 1

8 0

4 years ago

Read 2 more answers

The labeled angles are called adjacent or vertical?

jek_recluse [69]

They are adjacent angles, they don't overlap and share a common vertex.

6 0

3 years ago

Read 2 more answers