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3 years ago

I need help with the 3 questions on the left corner :((

Mathematics

1 answer:

ss7ja [257]3 years ago

8 0

Answer:

1. No

2. Yes

3. No

Step-by-step explanation:

-4 is equal to -4 but not bigger then -4

8.5 is bigger then -4

-16 ¾ is smaler then -4

(because it is a negative number)

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Let f(x) = 3x + 2 and g(x) =x - 3. Find f(x) - g(x).

Arturiano [62]

2x + 5 is your answer

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3 years ago

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The graph of $y = ax^2 + bx + c$ is shown below. Find $a \cdot b \cdot c$. (The distance between the grid lines is one unit.)

Savatey [412]

Answer:

$a\cdot b\cdot c=\frac{15}{4}$

Step-by-step explanation:

Vertex is the minimum or maximum point of parabola

Vertex of parabola is (h,k)

Therefore, from given graph (-3,-2) is the lowest point.

Vertex of parabola is at (-3,-2).

Standard equation of parabola

$y-k=a(x-h)^2$

Substitute the values

$y-(-2)=a(x-(-3))^2=a(x+3)^2$

$y+2=a(x+3)^2$

(-1,0) lies on the parabola.

Therefore, it satisfied the equation of parabola.

$0+2=a(-1+3)^2=4a$

$a=2/4=1/2$

Now, using the value of a

$y+2=1/2(x+3)^2=1/2(x^2+6x+9)$

$y+2=\frac{1}{2}x^2+3x+\frac{9}{2}$

$y=\frac{1}{2}x^2+3x+\frac{9}{2}-2$

$y=\frac{1}{2}x^2+3x+\frac{9-4}{2}$

$y=\frac{1}{2}x^2+3x+\frac{5}{2}$

By comparing with

$y=ax^2+bx+c$

We get

$a=\frac{1}{2}, b=3, c=5/2$

$a\cdot b\cdot c=\frac{1}{2}\times 3\times \frac{5}{2}$

$a\cdot b\cdot c=\frac{15}{4}$

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3 years ago

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motikmotik

Answer:

Step-by-step explanation:

Khan academy huh?

put the numbers in order from least to greatest.
find the median
find the difference between the median and all of the other numbers.

P.S. If you were looking for somebody to tell you the answer don't hold your breath.

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In exponential form, it would be xy^2z^3

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