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4 years ago

Is y=1.25x proportional

Mathematics

1 answer:

sladkih [1.3K]4 years ago

6 0

Yes because it increases by 1.25 each time.

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Neeeeeed heeelp plz!!!

Blababa [14]

|
|__x_- 4___________ 2x³/2x² =x
2x² + 2x +3 | 2x³ - 6x² +7x +3
- (2x³ +2x² +3x)
 -8x² +4x +3 -8x²/2x² = -4
-(-8x² -8x -12)
 12x +15

(x-4) + (12x +15)/(2x² + 2x +3)

6 0

3 years ago

Which is the solution set of the inequality 15 y minus 9 less-than 36 y greater-than nine-fifths y less-than nine-fifths y less-

Vaselesa [24]

Answer:

C. y<3

Step-by-step explanation:

We are required to determine the solution set of the inequality

$15y-9$

Step 1: Add 9 to both sides

$15y-9+9$

Step 2: Divide both sides by 15

$15y \div 15$

The solution set of the given inequality is: y<3.

The correct option is C.

4 0

4 years ago

Read 2 more answers

Find f(-5) if f(x) = |x+1|

lions [1.4K]

Answer:

Step-by-step explanation:

just put -5 to x

|-4|=4

3 0

3 years ago

Find the f^-1(x) and it’s domain

borishaifa [10]

Answer:

$f^{-1}(x) = (x + 8)^2$

$x \ge -8$

Step-by-step explanation:

Given

$f(x) = \sqrt x - 8$

Solving (a): $f^{-1}(x)$

We have:

$f(x) = \sqrt x - 8$

Express f(x) as y

$y = \sqrt x - 8$

Swap x and y

$x = \sqrt y - 8$

Add 8 to $both\ sides$

$x + 8 = \sqrt y - 8 + 8$

$x + 8 = \sqrt y$

Square both sides

$(x + 8)^2 = y$

Rewrite as:

$y = (x + 8)^2$

Express y as: $f^{-1}(x)$

$f^{-1}(x) = (x + 8)^2$

To determine the domain, we have:

The original function is $f(x) = \sqrt x - 8$

The range of this is: $f(x) \ge -8$

The $domain$ of the $inverse$ function is the $range$ of the $original$ function.

Hence, the domain is:

$x \ge -8$

3 0

3 years ago

ASAP please help me I need this quick The question and answers are in the picture

7nadin3 [17]

Thé correct answer is the third one

5 0

3 years ago