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Semmy [17]
2 years ago
9

Find the slope of a line perpendicular to the given line. x = - 1

Mathematics
1 answer:
kolbaska11 [484]2 years ago
4 0
The slope would be undefined, because it would be going straight vertical.
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Sandra can type 180 words in 3 minutes. At this rate, how many words can she type in 5 minutes?
mezya [45]
180 divided by 3 = 60

60 x 5 = 300

she can type 300 words in 5 minutes
5 0
3 years ago
Read 2 more answers
Jules has 1200 and is spending 40 per week. kelsey has 400 and is saving 50 a week. in how many weeks, will jules and kelsey hav
expeople1 [14]
After x weeks:
Jules will have: 1,200 + 40 x.
Kelsey will have: 400 + 50 x.
If we want to know in how many weeks will they have the same amount of money, we will make an equation:
400 + 50 x = 1,200 + 40 x
50 x - 40 x = 1,200 - 400
10 x = 800
x = 800 : 10
x = 80
Answer: In 80 weeks they will have the same amount of money.
4 0
3 years ago
A software developer wants to know how many new computer games people buy each year. Assume a previous study found the standard
Marrrta [24]

Answer:

The minimum sample size required to ensure that the estimate has an error of at most 0.14 at the 95% level of confidence is n=567.

Step-by-step explanation:

We have to calculate the minimum sample size n needed to have a margin of error below 0.14.

The critical value of z for a 95% confidence interval is z=1.96.

To do that, we use the margin of error formula in function of n:

MOE=\dfrac{z\cdot \sigma}{\sqrt{n}}\\\\\\n=\left(\dfrac{z\cdot \sigma}{MOE}\right)^2=\left(\dfrac{1.96\cdot 1.7}{0.14}\right)^2=(23.8)^2=566.42\approx 567

The minimum sample size to have this margin of error is n = 567.

3 0
2 years ago
Find the common ratio of the sequence. –172, –86, –43, –21.5, . . .
seropon [69]
If you divide each number by the previous one, you get:

-86 / -172 = 1/2
-43 / -86 = 1/2
-21.5 / -43 = 1/2

The common ratio is 1/2 = 0.5
4 0
3 years ago
Read 2 more answers
How many times does 7 and 9 go on to 27
const2013 [10]

Answer:

they both go into 27 3 times

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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