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4 years ago

What is the quadratic formula?

Mathematics

1 answer:

Alla [95]4 years ago

3 0

Answer:

x = -b plus or minus the square root of b^2 minus 4ac all over 2a. Hope this helps!!!!

Used to solve quadratic equations. Very helpful. :)

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What is the length of the third side of the window frame below?

Nostrana [21]

Answer:

C 40 inches

Step-by-step explanation:

You can use the pythagorean theorem to solve for the second leg. When you plug in 42 for a and 58 for c, you get 42^2 + b^2 = 58^2, then you can isolate b, which should be 40 inches.

8 0

3 years ago

60) 786<br> Long division?

murzikaleks [220]

Answer:

This image will help!

Thanks and have a good day.

6 0

3 years ago

The z-score associated with 95% is 1.96. If the sample mean is 200 and the standard deviation is 30, find the upper limit of the

ziro4ka [17]

Answer:

The upper limit of the 95% confidence interval is:

C.I_u = 200 + (58.8/ $\sqrt{n}$ )

Step-by-step explanation:

The formula is given as:

C.I = μ ± Z*σ/ $\sqrt{n}$

The upper limit => C.I_u = μ + Z*σ/ $\sqrt{n}$

The lower limit => C.I_l = μ - Z*σ/ $\sqrt{n}$

The sample size (n) is not stated in the question. Hence, we calculate the upper limit with respect to n.

The upper limit => C.I_u = 200 + 1.96*(30/ $\sqrt{n}$ )

= 200 + (1.96*30)/ $\sqrt{n}$

= 200 + 58.8/ $\sqrt{n}$

5 0

3 years ago

Fatima has 3 gallon of milk. She

tatiyna

Answer:

1/2 of a gallon

Step-by-step explanation:

3 divided by 6 is 1/2

6 0

3 years ago

Read 2 more answers

Plz answer asap!!!!!!!!!!!!!!!!!!!!!!

user100 [1]

Answer:

It can be represented by the expression 2r, or “two times the radius.” So if you know a circle's radius, you can multiply it by 2 to find the diameter; this also means that if you know a circle's diameter, you can divide by 2 to find the radius. Find the diameter of the circle.

Step-by-step explanation:

you'r welcome :)

6 0

3 years ago