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Elena L [17]
3 years ago
5

25 POINTS HOW MUCH I NEED HELP PLEASE IM BEGGINGGG

Mathematics
1 answer:
Ghella [55]3 years ago
8 0

Answer:

<h2>x = -3</h2>

Step-by-step explanation:

It's a vertical line. Regardless of what point you go to on the line, it always has a value of -3 because it is going vertically (up and down) at -3.

Therefore the equation of a line is x = -3

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One day last week, 6 teachers joined 5/7 of the members of the running club in an after-school run. Priya counted a total of 31
Blababa [14]

Answer:

The running club has 35 members

Step-by-step explanation:

Let

x ----> the total members of the running club

we know that

The total members of the running club multiplied by 5/7 plus 6 must be equal to 31 people

so

\frac{5}{7}x+6=31

Solve for x

\frac{5}{7}x=31-6

\frac{5}{7}x=25

x=25(7)/5

x=35\ members

therefore

The running club has 35 members

5 0
3 years ago
Brooklyn is starting a running plan to train for a race . In the first week of her running plan , Brooklyn will run 8 miles . Th
Elanso [62]

Answer:

36.5 miles

Step-by-step explanation:

6 0
3 years ago
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The pH of randomly selected swimming pools follows a normal distribution with mean 7.4 and standard deviation 0.22. A pool shoul
skad [1K]

Answer:

78.383%

Step-by-step explanation:

The pH of randomly selected swimming pools follows a normal distribution with mean 7.4 and standard deviation 0.22. A pool should have a pH between 7.2 and 7.8 so that chlorine treatment is effective.

Using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean

σ is the population standard deviation.

For x = 7.2

z = 7.2 - 7.4/0.22

z = -0.90909

Probability value from Z-Table:

P(x = 7.2) = 0.18165

For x = 7.8

z = 7.8 - 7.4/0.22

z = 1.81818

Probability alue from Z-Table:

P(x = 7.8) = 0.96548

The probability of pools having an acceptable pH level(7.2 and 7.8)

= P(x = 7.8) - P(x = 7.2)

= 0.96548 - 0.18165

= 0.78383

Converting to percentage

0.78383 × 100

= 78.383%

The percentage of pools having an acceptable pH level is 78.383%

3 0
2 years ago
Please help me please​
bija089 [108]

Answer:

< 3, < 5

Step-by-step explanation:

< 3 is congruent to 36° due to the vertical angles rule which says that any angle across form each other is congruent

6 0
3 years ago
Read 2 more answers
What will be the new coordinates of the point when the ordered pair (-3, -5) is reflected across only the x-axis?
nignag [31]

Answer:

3,5 I think is the point of axis

Step-by-step explanation:

ok

5 0
3 years ago
Read 2 more answers
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