3 years ago

Solve the equation. 3k – 1= 7k + 2

Mathematics

1 answer:

mariarad [96]3 years ago

6 0

Answer:

k = -0.75

Step-by-step explanation:

You might be interested in

Need help reflecting

nikitadnepr [17]

Answer:

7% R=18 6=4

Step-by-step explanation:

6 0

3 years ago

The data in the table represents the value of a savings account at the end of each year for 6 years. The relationship between th

fgiga [73]

Answer:

1. Constant multiplicative.

2. 1.05.

Step-by-step explanation:

Their savings increase by 1.05x every year.

7 0

3 years ago

Scores from an exam are normally distributed with a mean of 85 and a standard deviation of 5. Suppose 188 students take the exam

charle [14.2K]

The mean is $\mu=85$ and standard deviation is $\sigma=5$ . Then the variable $X\sim N(85,5)$ .

Use substitution $Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}$ , then the variable $Z\sim N(0,1)$ .

The probability $Pr(X>80)$ can be calculated in the following way:

for X=80, $Z=\dfrac{80-85}{5} =-1$ and $Pr(X>80)=Pr(Z>-1)$ . From the diagram $Pr(Z>-1)=0.34+0.34+0.135+0.025=0.84$ .

Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80

4 0

4 years ago

Read 2 more answers

7 2/3 + 9 3/4= Plz help A. 17 1/2 B. 16 5/12 C. 16 5/7 D. 17 5/12

Elis [28]

The answer is D. 17 5/12

4 0

3 years ago

Estimate how many times larger (1.9) x 10⁻⁸ is than (4.2) x 10⁻¹³ ????

Igoryamba

Answer:

1.9 x 10=19

4.2x10=42

Now just find out how to multiply 19 -8 times and how to multiply 42, -13 times.

Step-by-step explanation:

hope this helps if not sorry

8 0

3 years ago

Read 2 more answers