All categories

4 years ago

Help

2 answers:

8 0

4(c-3)=4c+8
4c-12=4c+8
0c=20
c=error. D is the right answer

3(z+1)+4(z-3)=5
3z+3+4z-12=5
7z-9=5
7z=14
z=2. D is the right answer. Hope it help!

kifflom [539]4 years ago

7 0

1st problem:
4(c-3)=4c+8
4c-12=4c+8
4c=4c+20
0=20
The answer is D) No Solution

2nd problem:
3(z+1)+4(z-3)=5
3z+3+4z-12=5
7z-9=5
7z=14
z=2
The answer is D) z=2

You might be interested in

41 out of 50 women surveyed liked perfume. what percentage of women did NOT like perfume

krok68 [10]

Answer:

18%

Step-by-step explanation:

Long Version: 41/50 = 0.82 and when you move the decimal two places right, you will get 82%. 100%-82%= 18%

Short Version: 9/50 people didn't like perfume. 9/50= 0.18 then you move the decimal two places right and it becomes 18%.

3 0

3 years ago

Read 2 more answers

If y=3x and 2x−4y=3 , then x=

tatiyna

Answer:

x = -3/10

Step-by-step explanation:

Solve for x by substituting y = 3x into the other equation:

2x - 4y = 3

2x - 4(3x) = 3

Simplify and solve for x:

2x - 12x = 3

-10x = 3

x = -3/10

So, x = -3/10

3 0

3 years ago

Read 2 more answers

What is the domain of f(x)=9-x2

son4ous [18]

The domain is all real number

There is no limit to what x can be

Choice G

5 0

4 years ago

Jorge lives 1/3 mile from the playground and Lynne lives 2/3 miles from the playground. Who lives closer to the playground Jorge

SOVA2 [1]

Jorge lives closer to the playground than Lynne.

4 0

3 years ago

Read 2 more answers

Use the confidence level and sample data to find a confidence interval for estimating the population mu. Round your answer to th

inysia [295]

Answer:

c. 9.5 lb < mu < 11.1 lb.

Step-by-step explanation:

Confidence interval can be stated as M±ME where

M is the sample mean (10.3)
ME is the margin of error

margin of error (ME) around the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic in 95% confidence level (1.96)

s is the standard deviation of the sample (2.4)

N is the sample size (37)

Putting thesenumbers in the formula we get:

ME= $\frac{1.96*2.4}{\sqrt{37} }$ ≈ 0.7733 ≈ 0.8

Then the 95% confidence interval would be 10.3 ± 0.8

7 0

4 years ago