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Pani-rosa [81]
3 years ago
6

Solve for the system of equations y=2x y=x^2-3

Mathematics
1 answer:
Vlad [161]3 years ago
7 0
(x-3)(x+1) is your answer
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What is the solution of this question <br> F(x)=[x]
faltersainse [42]
Good luck cause I’m in the same situation
3 0
4 years ago
What is the standard deviation of this data set?
Semmy [17]

Answer:

D. 24.7

Step-by-step explanation:

First off we need to find the Mean of the data set. We take sum of all the data in the set and divide it by the number of sample in the data set.

Mean=\dfrac{12+16+22+23+23+34+44+46+47+48+64+67+73+83+89}{15}

Mean=\dfrac{691}{15}

Mean=46.07

Now we find the variance using the formula:

σ²=Σ(x-Mean)²

       n-1

σ²=\dfrac{(12-46.07)^{2}+(16-46.07)^{2}+(22-46.07)^{2}+...+(89-46.07)^{2}}{15-1}

σ²=\dfrac{8,554.934}{14}

σ²=611.07

Now that we have the variance, we can use the variance to solve for the standard deviation by getting the square root of the variance.

SD=\sqrt{611.07}

SD=24.72

7 0
4 years ago
How do I do the question in the picture up there
satela [25.4K]
Answer: x= 1/5
3/4x +1/4 =2x
1/4= 1 1/4x or 1.25x (minus 3/4x on both side)
1/5=x
4 0
3 years ago
Solve for b Pythagorean
Vaselesa [24]

The figure shows a right triangle at each corner with legs 3 and b and hypotenuse 4. The Pythagorean theorem tells you the sum of the squares of the legs is equal to the square of the hypotenuse:

3² + b² = 4² . . . . . . put the numbers into the Pythagorean formula

9 + b² = 16 . . . . . . . evaluate the squares

b² = 16 - 9 = 7 . . . . subtract 9 to isolate the variable

b = √7 . . . . . . . . . . undo the square operation by taking the square root

7 0
3 years ago
I need to know how long is each side of the infield. Btw in the picture on the bottom right it says A=81in squared
vodomira [7]
The infield of a baseball stadium is diamond shaped, which means each side is the same length.

If the whole area of the diamond is 81 inches, then each side has to be 9 inches.

A = b²
81 = b²
√81 = b
9 = b

3 0
3 years ago
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