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3 years ago

2. (- 6x + 3) + (x - 7)

Mathematics

2 answers:

irina1246 [14]3 years ago

6 0

Answer:

-6x^2+45x-21

Step-by-step explanation:

So use the FOIL method

First- -6x*x

Outter- -6x*-7

Inner- 3*x

last- 3*-7

liq [111]3 years ago

5 0

Answer:

-5x-4

Step-by-step explanation:

You first have to combine like terms. (-6x + x) + (+3 -7) = -5x-4

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find the slope and y-intercept of the line. y equals seven fourths x minus 10. a. 10; seven fourths b. four sevenths; 10 c. nega

kirill [66]

Slope is 7/4

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so d. is the answer

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3 years ago

ASAP! find the inverse of the function y=2x^2+2

jeka57 [31]

Answer:

$\displaystyle y=\sqrt{\frac{1}{2}x -1}$

Step-by-step explanation:

We want to find the inverse of the function:

$y=2x^2+2$

To find the inverse of a function, we will flip the variables and solve for y. So:

$x=2y^2+2$

Solve for y. Subtract two from both sides:

$x-2=2y^2$

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And take the principal square root of both sides. Therefore:

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3 years ago

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2 years ago

Read 2 more answers

The sum of three numbers is 3. if the second number is subtracted from the sum of the first and third numbers, the result is 9.

Margaret [11]

Let the three numbers be x, y, and z.

If the sum of the three numbers is 3, then x+y+z=3

If subtracting the second number from the sum of the first and third numbers gives 9, then x+z-y=9

If subtracting the third number from the sum of the first and second numbers gives -5, then x+y-z=-5

This forms the system of equations:
[1] x+y+z=3
[2] x-y+z=9
[3] x+y-z=-5

First, to find y, let's take do [1]-[2]:
x+y+z=3
-x+y-z=-9
2y=-6
y=-3

Then, to find z, let's do [1]-[3]:
x+y+z=3
-x+-y+z=5
2z=8
z=4

Now that you have y and z, plug them into [1] to find x:
x+y+z=3
x-3+4=3
x=2

So the three numbers are 2,-3, and 4.

5 0

3 years ago

Will give medal to best answer!

mart [117]

We have two sides and one angle opposite to one of the known sides.

Begin with applying the Law of Sines to find angle A:
$\frac{sin A }{a}$ = $\frac{sin C }{c}$

Then, solve for sin A:
sin A = $\frac{a sinC}{c}$

Now, plug in numbers:
sin A = 19 × sin(38) / 10 = 1.17

We know that it does not exist an angle whose sin is bigger than 1, therefore
no triangle is formed.

6 0

3 years ago

2. (- 6x + 3) + (x - 7)​

2. (- 6x + 3) + (x - 7)