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3 years ago

Six less than the sum of 8 and 5

Mathematics

2 answers:

NARA [144]3 years ago

8 0

It would be: 8+5 - 6 = 13-6 = 7

So, Final Answer is 7

Hope this helps!

aniked [119]3 years ago

3 0

First you add 8+5 because there the sum and subtract 6 13-6=7

So it's 7

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A college student is taking two courses. The probability she passes the first course is 0.67. The probability she passes the sec

andrezito [222]

Answer:

0.58 = 58% probability she passes both courses

Step-by-step explanation:

We can solve this question treating the probabilities as a Venn set.

I am going to say that:

Event A: She passes the first course.

Event B: She passes the second course.

The probability she passes the first course is 0.67.

This means that $P(A) = 0.67$

The probability she passes the second course is 0.7.

This means that $P(B) = 0.7$

The probability she passes at least one of the courses is 0.79.

This means that $P(A \cup B) = 0.79$

a. What is the probability she passes both courses

This is $P(A \cap B)$ .

We use the following relation:

$P(A \cup B) = P(A) + P(B) - P(A \cap B)$

$P(A \cap B) = P(A) + P(B) - P(A \cup B) = 0.67 + 0.7 - 0.79 = 0.58$

0.58 = 58% probability she passes both courses

5 0

3 years ago

Simplify the complex fraction: 4/(x+3)/(1/x+3)

sertanlavr [38]

Answer:

Step-by-step explanation:

To simplify

$\frac{4}{x+3}$ ÷ $\frac{1}{x+3}$

Change division to multiplication and turn the second fraction upside down, that is

$\frac{4}{x+3}$ × $\frac{x+3}{1}$

Cancel the factor (x + 3) on the numerator/ denominator , leaving

$\frac{4}{1}$ = 4

7 0

3 years ago

Read 2 more answers

Help please 50 points! Statistics Exam. it is timed

dlinn [17]

Answer:

The answer is C I believe.

Step-by-step explanation:

3 0

3 years ago

If F(x) = x² + 5x and G(x) = 2x + 1, find F(5) + G(6).

kondor19780726 [428]

F(x) = x^2 + 5x
F(5) = 5^2 + 5(5)
F(5) = 25 + 25
F(5) = 50

G(x) = 2x + 1
G(6) = 2(6) + 1
G(6) = 12 + 1
G(6) = 13

F(5) + G(6) = 50 + 13 = 63 <==

7 0

4 years ago

SAT reading and writing section scores of a random sample of twenty 11th-grade students in a certain high school are given below

kvasek [131]

Answer:

The value of test statistics is 25.

Step-by-step explanation:

We are given below the SAT reading and writing section scores of a random sample of twenty 11th-grade students in a certain high school;

380, 520, 480, 510, 560, 630, 670, 490, 500, 550, 400, 350, 440, 490, 620, 660, 700, 730, 740, 560

Let $\sigma$ = population standard of the reading and writing section SAT score of the students in this school

So, Null Hypothesis, $H_0$ : $\sigma \leq$ 100 {means that the reading and writing section SAT score of the students in this school is lesser than or equal to 100}

Alternate Hypothesis, $H_A$ : $\sigma$ > 100 {means that the reading and writing section SAT score of the students in this school is higher than 100}