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abruzzese [7]
4 years ago
15

Slope of (9,-3) and (9,-8)

Mathematics
2 answers:
notsponge [240]4 years ago
7 0

Answer:

It is undefined

Step-by-step explanation:

The points both go in a vertical direction.

earnstyle [38]4 years ago
6 0

Answer:

Infinity

Step-by-step explanation:

Slope = y2 - y1/x2 - x1

Given

x1 = 9

y1 = -3

x2 = 9

y2 = -8

Therefore

Slope = -8 -(-3) /9 - 9

= -8 + 3 /9 - 9

= -5/0

= infinity

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Solve for x x + 6=18
Verizon [17]
X=12

This is because you subtract 6 from both sides to get the x isolated.

So x=18-6

x=12 :)
6 0
3 years ago
Write the exponent for the expression. <br> 4x4
Jobisdone [24]

Answer: 4²

Explanation: First, we count the number of 4's to

find that we have 2 factors of 4.

So to write this problem in exponential form, we use a base

of 4 and an exponent of 2 which can be read as "4 to the 2nd power."

3 0
3 years ago
Read 2 more answers
What is seven more than six times a number y
cricket20 [7]
6y + 7 I don't know if that's what you're looking for
3 0
3 years ago
Alma is estimating the proportion of students in her school district who, in the past month, read at least 1 book. From a random
Maurinko [17]

Answer:

D)

(0.64 +1.645 \sqrt{\frac{0.64(0.36)}{50} })

90 percent confidence interval for the proportion of all students in her district who read at least 1 book last month

(0.52846 , 0.75166)

Step-by-step explanation:

<u><em>Step:-1</em></u>

Given that the random sample size 'n' = 50

The sample proportion

                       p^{-} = \frac{32}{50} = 0.64

90 percent confidence interval for the proportion of all students in her district who read at least 1 book last month

(p^{-} - Z_{0.90} \sqrt{\frac{p(1-p)}{n},  } , p^{-} +Z_{0.90} \sqrt{\frac{p(1-p)}{n} })

<u><em>Step(ii):-</em></u>

Level of significance = 0.90

Z₀.₉₀ = 1.645

(0.64 - 1.645 \sqrt{\frac{0.64(1-0.64)}{50},  } , 0.64 +1.645 \sqrt{\frac{0.64(1-0.64)}{50} })

(0.64 - 1.645 \sqrt{\frac{0.64(0.36)}{50},  } , 0.64 +1.645 \sqrt{\frac{0.64(0.36)}{50} })

(0.64 -1.645(0.06788) , (0.64 + 1.645(0.06788)

(0.52846 , 0.75166)

<u><em>Final answer:-</em></u>

90 percent confidence interval for the proportion of all students in her district who read at least 1 book last month

(0.52846 , 0.75166)

5 0
3 years ago
Ellen types 205 words in five minutes. Which student has the same typing speed as Ellen?
Arada [10]

Answer:

B. Bradley

Step-by-step explanation:

We know that Ellen can type 205 words in 5 minutes. To start comparing to the other students, we need to find out how many words she can type per minute. We can divide 205 by 5 to get our answer.

x=\frac{205}{5}

x=41

<u>Ellen can type 41 words per minute</u>. To find our answer we must find how many words per minute the other students can type. Lets start with the first and go down from there:

Alissa:

x=\frac{220}{20}

x=11

It can't be Alissa.

Bradley:

x=\frac{328}{8}

x=41

Your answer is B. Bradley

6 0
4 years ago
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