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nikitadnepr [17]
3 years ago
11

Graph this on a coordinate plane f(x)=2x^2-1

Mathematics
1 answer:
rodikova [14]3 years ago
7 0

Answer:

Step-by-step explanation:

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Please help!!<br> I need it quick!!!
sladkih [1.3K]

Answer:

-13 \frac{13}{25}

Step-by-step explanation:

To multiply fractions with both the fraction and whole number you must convert it to an improper fraction by multiplying the whole numbers by the denominators, which you would get 35 for the first fraction and -10 for the second, then you must add the numerators to that number and put the number into the numerator spot. at this point you should have \frac{39}{7} and \frac{-12}{5}.

Now, multiply the numerators by the numerators and the denominators by the denominator and keep it aligned so the products stay in fraction form. now you should have \frac{-468}{35} .

Divide the numerator by the denominator to get the whole number, in this problem that comes out to 13. The remainder of this division becomes the new numerator which in this case would also be 13 and the denominator stays the same so now you have -13\frac{13}{35} which is the answer

Hope i helped!

3 0
3 years ago
Read 2 more answers
HELP PLZZZ!!!! What is the approximate area of a circular pond?
Georgia [21]

Answer:

<h2>B. 49,062.5 ft²</h2>

Step-by-step explanation:

The formula of an area of a circle:

A=\pi r^2

r - radius

We have the diameter d = 250 ft. We know: d = 2r.

Therefore r = 250 : 2 = 125 ft.

Substitute:

A=\pi(125)^2=15625\pi

\pi\approx3.14\to A=(15625)(3.14)=49062.5\ ft^2

7 0
4 years ago
Interpret this probability. Select the correct choice below and fill in the answer box within your choice. ​(Round to the neares
tia_tia [17]

Answer:

A. If 100 pregnant individuals were selected independently from this​ population, we would expect nothing pregnancies to last less than 184184 days.

Step-by-step explanation:

The mean, standard deviation, and population size can be used for the analysis. In the problem above, the population size is 100 and the estimated number of days for no pregnancy to occur is less than approximately 184 days. This shows that there will not be any pregnancy for any given day that is below the 184th day.

6 0
4 years ago
Write the equation of a circle whose center is at the origin and contains the point (7, 0).
kari74 [83]
Radius of the circle = sqrt((7 - 0)^2 + (0 - 0)^2) = sqrt(7^2) = 7

Equation of a circle is given by (x - a)^2 + (y - b)^2 = r^2; where (a, b) is the centre of the circle.

Required equation = (x - 0)^2 + (y - 0)^2 = 7^2
x^2 + y^2 = 49
5 0
3 years ago
What is 9 divided by 6/7
Igoryamba
Equation: 9÷ 6/7
First turn that whole number into a fraction: 9/1.
9/1 ÷ 6/7
Put into effect the rules of dividing fractions which is keep the first fraction the same, turn the division sign into a multiplication sign, and flip the second fraction to its reciprocal.
9/1× 7/6
Multiply (multiply the numerators then the denominators.)
63/6
Simplify
The answer is 1.5 or 1 1/2
8 0
3 years ago
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