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nignag [31]
3 years ago
7

F(X)=2x^2 +1 find and simplify:: if f(a) =19 find a. Isn't a just 19??

Mathematics
1 answer:
liberstina [14]3 years ago
5 0
2a^2+1=19\\
2a^2=18\\
a^2=9\\
a=-3 \vee a=3
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How to start, there is also a second part to it but I'm pretty sure once I get the right formula I will be all set
Furkat [3]
C=.35x + 9.50

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7 0
3 years ago
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The equation x2 − xy + y2 = 3 represents a "rotated ellipse," that is, an ellipse whose axes are not parallel to the coordinate
Setler [38]

Answer:

the points where the ellipse crosses the x- axis are (1.73, 0) and (-1.73, 0)

Step-by-step explanation:

To find the points at which a graphic crosses the x-axis we need to find the values for x where y = 0.

Therefore, in the equation x²- xy + y² = 3 we are going to make y = 0 and solve for x

x² - xy + y² = 3

x²- x(0) + (0)² = 3

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x = ±√3

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3 0
4 years ago
Convert into slope intercept form?
Alexeev081 [22]
<h3>Answer:</h3>

y = 2x + 5

<h3>Step-by-step explanation:</h3>

<u>Definitions</u>:

Slope Intercept form; y = mx + b

m = slope

b = y intercept

Step 1: Since the slope is given plug it into y = mx

y = 2x + b

Step 2: Plug a points' x and y into their corresponding spots to solve for b

(33) = 2(14) + b

Simplify and solve

33 = 28 + b

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6 0
3 years ago
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8 0
2 years ago
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rusak2 [61]

Answer:

x =41.18114952

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Since this is a right triangle, we can use trig functions

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cos theta = adjacent / hypotenuse

cos x  = 14.3/19

taking the inverse cos of each side

cos^-1 (cos x) = cos ^-1 ( 14.3/19)

x =41.18114952

3 0
3 years ago
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