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vladimir1956 [14]
4 years ago
5

What is the correct answer ? Please explain why !!!

Mathematics
2 answers:
Serjik [45]4 years ago
7 0
The answer would be 12
tangare [24]4 years ago
6 0
The answer would be to because you were add 2+3 which equals six and then you multiply 6 times 3 which equals 12
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What are the solutions to the following system of equations? x + y = 3 y = x2 − 9 (3, 0) and (1, 2) (−3, 0) and (1, 2) (3, 0) an
OLga [1]

The solutions for the given system of equations are:

(3, 0), (-4, 7).

<h3>How to solve the given system of equations:</h3>

Here we have the system:

x + y = 3

y = x² - 9

To solve this, we can replace the second equation into the first one, so we get:

x + (x² - 9) = 3

Now we can solve this quadratic equation for x, we need to solve:

x² + x - 12 = 0.

The solutions are given by Bhaskara's formula:

x = \frac{-1 \pm \sqrt{1^2 - 4*1*(-12)} }{2*1} \\\\x = \frac{-1 \pm 7 }{2}

Then the two solutions are:

x = (-1 + 7)/2 = 3

x = (-1 - 7)/2 = -4

To get the y-values correspondent, we can evaluate the linear equation in these two values:

y = 3 - x.

For x = 3:

y = 3 - 3 = 0

For x = -4:

y = 3 + 4 = 7

Then the two solutions are: (3, 0), (-4, 7).

If you want to learn more about systems of equations:

brainly.com/question/13729904

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3 0
2 years ago
Davian is traveling at a constant speed of 85 kilometres per hour. If he is half way through his 510 kilometre trip, how much lo
inna [77]
E.5 hours
All you have to do is subtract 85 from 510 till you have 0
7 0
3 years ago
Read 2 more answers
Solve for a side in right triangles
natita [175]

Answer:

  2.30

Step-by-step explanation:

The side of interest is opposite the given angle, and the hypotenuse is given. The sine relation tells you ...

  sin(A) = a/c

  a = c·sin(A) = 3·sin(50°)

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5 0
4 years ago
Emergency! Find the measure of angle A
Shkiper50 [21]

Answer:

57

CosA = (14/26)

A = Cos⁻¹ (14/26)

A = 57

7 0
3 years ago
1. Marlene is going on a camping trip with a group of friends. She brings 3 boxes of granola bars,
andrey2020 [161]

Answer:

13.5

Step-by-step explanation:

total boxes of granola is = 3 + 2 + 1

                                         =  6 boxes

6 boxes = 57 bars

1 box  =  57 / 6

1 box  = 9.5 + 3

           = 13.5 (ANS)

i hope my ans is correct if not i apologise.

3 0
2 years ago
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