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3 years ago

How do I solve number 15?! Plz help!!!!!

Mathematics

1 answer:

Evgesh-ka [11]3 years ago

3 0

first get all variables on the same side, then use elimination to solve.

x = -3

y = -11

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Help with this problem pls

Vaselesa [24]

Answer: (x+5)

(x-2) (x+2)(x-5) are factors the equation

5 0

3 years ago

Evaluate the expression for the given values.

zmey [24]

Mx-ymx-y

m=5m=5
x=3x=3
y=8y=8
So... They all have to be 0 otherwise they are false so...

Hope this helps :)

8 0

3 years ago

Read 2 more answers

The number of bacteria in a certain population increases according to a continuous exponential growth model, with a growth rate

Kazeer [188]

Set the growth factor equal to 2
$e^{.076 t} = 2$
Solve for t, Take natural log of both sides
$ln (e^{.076 t}) = ln(2) \\ .076 t = ln(2) \\ ........ \\ t = \frac{ln (2)}{.076}$

7 0

3 years ago

Shae is covering 3 walls in her bedroom with wallpaper. The measurement of each wall is 12 ft x 14 ft. A roll of wallpaper cover

Vedmedyk [2.9K]

Each wall measures 12 ft * 14 ft.
Area of one wall = LW = 12 ft * 14 ft = 168 ft^2
Area of 3 walls = 3 * area of 1 wall = 3 * 168 ft^2 = 504 ft^2

One roll of wall paper covers 42 ft^2.
To find out how many rolls are needed,
divide the total area by the area of one roll.

(504 ft^2)/(42 ft^2) = 12

Answer: Shae should purchase 12 rolls.

5 0

3 years ago

Someone help pleasee

Vilka [71]

Answer:

Step-by-step explanation:

g(x) = 3f(-2x)

= 3*([-2x)² + (-2x) - 2)

= 3 (4x² - 2x - 2)

= 3 * (4x² - 4x +2x - 2) {Rewrite the middle term}

= 3 *[ 4x(x - 1) + 2(x - 1)]

= 3* [ (x -1) *(4x + 2)]

= 3(x - 1)(4x + 2)

x - 1 = 0 ; 4x + 2 = 0

x = 1 ; 4x = -2

x = $\dfrac{-2}{4}=\dfrac{-1}{2}$

Roots: x = 1 , (-1/2)

3 0

3 years ago