Find the midpoint of the line segment with the given endpoints (-3,1 -2,8) (-4.92,-3.3)

I NEED ANSWERS FAST. 1.Using the following image, find

Gwar [14]

Answer: FE is 7 and RS is 6.

Step-by-step explanation:

13 - 6 = 7

11-5= 6

5 0

3 years ago

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How do you do this equation

RUDIKE [14]

When you solve, a quadratic formula is set up as ax^2+bx+c so in this scenario a is 1, b is -1 and c is -6.
-(-1)+- √- 1^2-4(1)(-1)/2(1) is
1+/-√1+4/2 equals -2 and 3 making the answer c

4 0

3 years ago

Determine the margin of error, m , of a 99% confidence interval for the mean IQ score of all students with the disorder. Assume

madreJ [45]

Answer:

E= 6.45

standard deviation is σ = 15,

The critical value is z(α/2) = 2.58.

Step-by-step explanation:

Margin error is the value that is lie above and below the sample.It gives percentage of numbers.Its is the product of critical value standard deviation and standard error of statistic.

General formula for the margin of error is

Margin of error = critical value × standard error of statistic

= $z \alpha /2$ × σ √n

z-value from two tailed is listed below:

From the table of standard normal distribution, probability value of 0.10.

row and column values gives the area to the two tail of z.

The positive z value is 2.58.

standard deviation is σ = 15,

The critical value is z(α/2) = 2.58.

after putting these vales we obtain the margin of error value that is

E= 6.45

7 0

3 years ago

D=a+b+c over ac. If you under stand please help

White raven [17]

You forgot to say what the question actually is !

But I've seen this problem before, in the last few days, here on Brainly.
I think the problem has three parts: 1). Solve the equation for 'a';
2). Solve it for 'b'; and 3). Solve it for 'c'.

I'll slog through that, and I'll try to explain what I'm doing clearly enough
so that eventually, you can do it on your own ... which is really the whole
idea behind this website.

1). Solve the equation for 'a'. That means you have to wind up with something
that says a = everything else.

D = (a + b + c) / c

Split the right side into 3 fractions: D = a/c + b/c + c/c

But c/c =1 , so the equation says D = a/c + b/c + 1

Subtract (b/c +1) from each side: D - b/c - 1 = a/c

Multiply each side by 'c' : Dc - b - c = a
========================

2). Solve the equation for 'b'. That means you have to wind up with something
that says b = everything else.

D = (a + b + c) / c

Split the right side into 3 fractions: D = a/c + b/c + c/c

But c/c =1 , so the equation says D = a/c + b/c + 1

Subtract (a/c +1) from each side: D - a/c - 1 = b/c

Multiply each side by 'c' : Dc - a - c = b
==========================

3). Solve the equation for 'c'. That means you have to wind up with
something that says c = everything else.

D = (a + b + c) / c

Split the right side into 3 fractions: D = a/c + b/c + c/c

But c/c =1 , so the equation says D = a/c + b/c + 1

Subtract 1 from each side: D - 1 = a/c + b/c

The two fractions on the right can be added/combined: D - 1 = (a + b) / c

Multiply each side by 'c' : c(D - 1) = (a + b)

Divide each side by (D - 1) : c = (a + b) / (D - 1)

8 0

3 years ago

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If I have 100 dollars and I give my sister 20 how much do I have ?

alisha [4.7K]

80 dollars.

Hope this helps.

5 0

3 years ago

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