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Nastasia [14]
3 years ago
5

2xsquered minus 8x minus 24

Mathematics
1 answer:
OlgaM077 [116]3 years ago
6 0

Answer:

x = 6 or x = -2

Step-by-step explanation:

Solve for x:

2 x^2 - 8 x - 24 = 0

The left hand side factors into a product with three terms:

2 (x - 6) (x + 2) = 0

Divide both sides by 2:

(x - 6) (x + 2) = 0

Split into two equations:

x - 6 = 0 or x + 2 = 0

Add 6 to both sides:

x = 6 or x + 2 = 0

Subtract 2 from both sides:

Answer: x = 6 or x = -2

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An isosceles triangle with angles b and c having the same measure is shown. Find the measure of each angle whose degree measure
Anton [14]

Answer:

A = 114°, B = C = 33°

Step-by-step explanation:

The triangle relationships let you write two equations:

A+B+C = 180

B=C

Substituting the expressions for A, B, and C, you have ...

(x+7y+41) +(2y+13) +(6x+15) = 180

7x +9y +69 = 180

7x +9y = 111

And the second equation gives ...

(2y+13) = (6x+15)

6x -2y =-2

3x -y = -1

Now, we can add 9 times this second equation to the first to eliminate the y-variable.

(7x +9y) +9(3x -y) = (111) +9(-1)

34x = 102

x = 3

Then the angle measures are ..

B = C = 6·3+15 = 33

A = 180 -2·33 = 114

The angles in the triangle are (A, B, C) = (114°, 33°, 33°).

8 0
3 years ago
(4,-3) and (-1,-9) The Distance Between the two points in simplest radical form
Nonamiya [84]

Answer:

(5,6)

Step-by-step explanation:

so first yall

u find the difference between 4 and -1 which is 5 so u go 5 spaces right so it would be 5

then u find the difference between -3 and -9 which is 6 so ud go 6 spaces down so the difference between emmmm is

<em>(5,6)</em>

7 0
3 years ago
Does the number 404,500 have 6 significant figures?
Anestetic [448]

Answer:

It has 4 significant figures, not 6

Step-by-step explanation:

4045 are the significant figures here

6 0
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Joey bought a dozen oranges for $3.50 and several bananas for $0.25 each at the grocery store. Joey spent a total of $5.75 on th
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Answer:

I don't see any number lines...

Step-by-step explanation:

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3 years ago
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When rounding to the nearest ten, the greatest whole number that rounds to 270 is
kirza4 [7]
Anything from 269, 268, 267, 266, and 265 but you’ll want 269
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