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2 years ago

PLEASE HELP. IF YOU DONT KNOW ONE BUT KNOW the otHERS THATS VERY HELPFUL TOO!!!

Mathematics

1 answer:

vredina [299]2 years ago

6 0

Answer:

idk im stuck too

Step-by-step explanation:

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Question help which is true about a 99% confidence interval based on a given sample?

gulaghasi [49]

99% confidence interval contains 99% of the population. It is wider than 95% confidence. (Confidence intervals contain the mean)

3 0

2 years ago

Salvador wrote 15 letters to friends each month for p months in a row. Write an expression to show how many total letters Salvad

katovenus [111]

Answer:

15p

Step-by-step explanation:

Let's interpret the question bit by bit

Salvador wrote 15 letters to friends each month

=> 15 letters = 1 month

For p months in a row

let the total number of letters for p months be x

=> x letters = p months

Bringing the two statements together gives;

15 letters = 1 month

x letters = p months

Now, let's solve for x by cross-multiplying the above

x letters * 1 month = 15 letters * p months

x = $\frac{15 letters * p months}{1 month}$

x = 15p letters

Therefore, Salvador wrote a total of 15p letters for the p months.

7 0

2 years ago

Which method can't you use to solve x²+7x=0.

scoray [572]

Answer:

Factoring

Step-by-step explanation:

x^2 + 7x = x(x + 7) = 0

x = 0 or x = -7

6 0

2 years ago

The coordinates below lie on the line with the given slope. find the missing coordinate value. (2,2) (5,y) slope = 2

vodka [1.7K]

Step-by-step explanation:

Hey there!

The given points are; (2,2) and (5,y).

Slope (m) =2

Using formula for slope, we get;

$m = \frac{y2 - y1}{x2 - x1}$

Put all values.

$2 = \frac{y - 2}{5 - 2}$

Simplify it to get value of"y".

$2 = \frac{y - 2}{3}$

$6 = y - 2$

$y = 6 + 2$

Therefore, y= 8.

Hope it helps...

5 0

3 years ago

Write the equation of the line that is parallel to y=2x+2 and goes through points (4,5)

kari74 [83]

Y = 2x-3
The second line will have its Y-Intercept at -3 and its slope will be up 2 and over 1 which will allow it to go through (4,5) and the line will be parallel to Y = 2x+2

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2 years ago