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2 years ago

11

Which of the following is the solution set of -2|xl <-8

1 answer:

hram777 [196]2 years ago

3 0

Answer:

X = 4

Step-by-step explanation:

-2 times any positive is a negative

X also can't be a negative

so -2 times 4 = -8

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If f(x) = 4x^2 and g(x) = x+1, find (f.g)(x).

Mandarinka [93]

Answer:

4x^3 + 4x^2

Step-by-step explanation:

f(x) = 4x^2

g(x) = x + 1

=> (f.g)(x) = 4x^2*(x + 1) = 4x^3 + 4x^2

Hope this helps!

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2 years ago

Graph the line y = kx +1 if it is known that the point M belongs to it: M(1,3)

tigry1 [53]

Answer:

$M(x,y) = (1,3)$ belongs to the line $y = 2\cdot x +1$ . Please see attachment below to know the graph of the line.

Step-by-step explanation:

From Analytical Geometry we know that a line is represented by this formula:

$y=k\cdot x + b$

Where:

$x$ - Independent variable, dimensionless.

$y$ - Dependent variable, dimensionless.

$k$ - Slope, dimensionless.

$b$ - y-Intercept, dimensionless.

If we know that $b = 1$ , $x = 1$ and $y = 3$ , then we clear slope and solve the resulting expression:

$k = \frac{y-b}{x}$

$k = \frac{3-1}{1}$

$k = 2$

Then, we conclude that point $M(x,y) = (1,3)$ belongs to the line $y = 2\cdot x +1$ , whose graph is presented below.

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2 years ago

Selma is buying a cell phone for business. The regular price of the phone is $179. If she buys the phone at 20% discount how muc

Nuetrik [128]

Answer:

$\large \boxed{\$35.80}$

Step-by-step explanation:

Discount = Regular price × % discount

$\text{Discount} = \text{\$179 regular price} \times \dfrac{\text{\$20 }}{\text{\$100 regular price}} = \textbf{\$35.80}\\\text{Selma will save $\large \boxed{\mathbf{\$35.80}}$}$

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2 years ago

Write ordinates of following points:<br> ( 3 , 4 ) & ( 5 , -3 )

Ne4ueva [31]

See attachment for math work and answer.

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2 years ago

Please help and explain

Alja [10]

corn = 15%

angle = (15/100)×360

= 54°

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2 years ago