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3 years ago

For f(x) = -4x -9 evaluate for f(6.5)

Mathematics

1 answer:

kolezko [41]3 years ago

7 0

Answer:

f=−35

Step-by-step explanation:

1.Simplify 4×6.5 to 26

f=-26-9

2. Simplify -26-9 to -35

f=-35

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If x=3+5i and y=-2+7i, what is y-x?

faust18 [17]

Answer:

-5+2i

Step-by-step explanation:

x = 3 + 5i , y = - 2 + 7i

y - x = - 2 + 7i - (3 + 5i)

= -2 + 7i - 3 - 5i

Collect like terms

-2 -3 + 7i - 5i

-5 + 2i

Therefore y-x = -5 + 2i

I hope this was helpful, Please mark as brainliest

3 0

4 years ago

Simplify the rational expression. state any excluded values. x^2-3x-10/x+2

Natali5045456 [20]

Answer:

The answer to your question is x - 5 or x = 5

Step-by-step explanation:

$\frac{x^{2} -3x - 10}{x + 2}$

1.- Factor the numerator

x² - 3x - 10

find 2 numbers that added equal -3 and multiply equal -10.

These numbers are -5 and + 2

(x - 5)(x + 2)

2.- Simplify

$\frac{(x - 5)(x + 2)}{x + 2)}$

Delete (x +2) in both numerator and denominator

3.- Result x - 5

x = 5

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3 years ago

(I NEED THIS ASAP) Find the slope of the line. Use points shown, (-1,-5) and(2,1)

patriot [66]

Answer:

2/1 or 2

Step-by-step explanation:

You go up 6 and over 3 simplify 6/3 to 2/1=2

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3 years ago

Cadence jumped 11.45 feet in a long jump competition what is the length of Mario's jump if she jumped 1.05 feet thank you

Flauer [41]

The answer us 10.40 because you just - 1.05 feet

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4 years ago

What is the vertex of the function f(x) = one-halfx2 + 3x + three-halves?

Morgarella [4.7K]

Answer:

The vertex of the function is (-3 , -3)

Step-by-step explanation:

* Lets explain how to find the vertex of the quadratic function

- The general form of the quadratic function is f(x) = ax² + bx + c,

where a , b , c are constant

- The vertex of the quadratic function is (h , k) , where

h = -b/2a and k = f(h)

* Lets solve the problem

∵ f(x) = one-half x² + 3x + three-halves

∴ f(x) = 1/2 x² + 3x + 3/2

∵ f(x) = ax² + bx + c

∴ a = 1/2 , b = 3 , c = 3/2

∵ The coordinates of its vertex is (h , k)

∵ h = -b/2a

∴ h = -3/2(1/2) = -3/1 = -3

∴ h = -3

∵ k = f(h)

∴ k = f(-3)

∵ f(-3) = 1/2 (-3)² + 3(-3) + 3/2 = -3

∴ k = -3

∴ The vertex of the function is (-3 , -3)

5 0

3 years ago

Read 2 more answers

For f(x) = -4x -9 evaluate for f(6.5)​

For f(x) = -4x -9 evaluate for f(6.5)