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KonstantinChe [14]
3 years ago
14

First come first served brainiest:)

Mathematics
1 answer:
inessss [21]3 years ago
3 0

Anserve

Step-by-step explanation:

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What is the solution to the system of equations graphed below?
maw [93]

C

Step-by-step explanation:

Graphs are simple I would know trust me man

7 0
3 years ago
(a) Use the fundamental theorem of algebra to determine the number of roots for 2x^2 + 4x + 7
zysi [14]

Answer:

Step-by-step explanation:

A 2nd order polynomial such as this one will have 2 roots; a 3rd order polynomial 3 roots, and so on.

The quadratic formula is one of the faster ways (in this situation, at least) in which to find the roots.  From 2x^2 + 4x + 7 we get a = 2, b = 4 and c = 7.

Then the discriminant is b^2 - 4ac, or, here, 4^2 - 4(2)(7), or -40.  Because the discriminant is negative, we know that the roots will be complex and unequal.

Using the quadratic formula:

       -4 ±√[-40]         -4 ± 2i√10

x  = ------------------ = ------------------

                4                       4

                                       -2 ± i√10

Thus, the roots are x = ------------------

                                               2

4 0
3 years ago
What is the focus of the parabola?<br><br> y=−14x2−2x−2
nataly862011 [7]
First, we need to transform the equation into its standard form (x - h)²=4p(y - k).
Using completing the square method:

y = -14x² - 2x - 2
y = -14(x² + 2x/14) - 2
y = -14(x² + 2x/14 + (2/28)²) -2 + (2/28)²
y = -14(x + 1/14)² - 391/196
-1/14(y + 391/196) = (x + 1/14)²

This is a vertical parabola and its focus <span>(h, k + p) is (-1/14, -391/196 + 1/56) = (-1/14, -775/392).

Or (-0.071,-1.977).</span>
3 0
3 years ago
Two sides of a triangle have lengths 18 cm and 40 cm. Describe the possible lengths of the third side.
Reptile [31]
Depends if it is a right triangle or not and if it is u will use the pothygerem theorem or the distance formula
6 0
3 years ago
Read 2 more answers
How much higher is the average cost at a clinic<br> than the average cost at a shelter?
Doss [256]

Answer: the answer is 50

Step-by-step explanation: I got it right in the quiz

3 0
3 years ago
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