Ask question

Ask question

All categories

professor190 [17]

3 years ago

12

Plzzzz heppppppp meeeeeee

1 answer:

german3 years ago

6 0

Answer:

when -1 > x it is decreasing

when -1 < x < 1 it is increasing

when x > 1 it is decreasing

Step-by-step explanation:

You might be interested in

What is the area of the circumference 176 Centimeters

Tems11 [23]

So I don’t have a step by step answer but I’m pretty sure it’s Area- =2461.76cm2 r= 28 but idk I just looked it up

6 0

3 years ago

Prove that root 7 is irrational by the method of contradiction

Alchen [17]

Let assume that $\sqrt7$ is a rational number. Therefore it can be expressed as a fraction $\dfrac{a}{b}$ where $a,b\in\mathbb{Z}$ and $\text{gcd}(a,b)=1$ .

$\sqrt7=\dfrac{a}{b}\\\\7=\dfrac{a^2}{b^2}\\\\a^2=7b^2$

This means that $a^2$ is divisible by 7, and therefore also $a$ is divisible by 7.

So, $a=7k$ where $k\in\mathbb{Z}$

$(7k)^2=7b^2\\\\49k^2=7b^2\\\\7k^2=b^2$

Analogically to $a^2=7b^2$ ------- $b^2$ is divisible by 7 and therefore so is $b$ .

But if both numbers $a$ and $b$ are divisible by 7, then $\text{gcd}(a,b)=7$ which contradicts our earlier assumption that $\text{gcd}(a,b)=1$ .

Therefore $\sqrt7$ is an irrational number.

8 0

4 years ago

Leon learned a total of 24 starter recipes over the course of 12 weeks of culinary school. After how many weeks of culinary scho

Neporo4naja [7]

Answer:

15

Step-by-step explanation:

He learns 2 recipes a week. So divide 30 by 2 & get 15

4 0

3 years ago

Would someone mind answering this for me? Thank you

Naddik [55]

(a) m = $\frac{1}{2}$

calculate the slope (m) using the ' gradient formula '

m = $\frac{(y_{2 - y_{1)} } }{(x_{2 - x _{1)} } }$

let (x₁, y₁) = (8, 9) and (x₂, y₂) = ( - 2, 4)

m = $\frac{(4 - 9)}{(-2 - 8)}$ = $\frac{-5}{-10}$ = $\frac{1}{2}$

(b) y - 9 = $\frac{1}{2}$ (x - 8)

the equation of a line in ' point- slope form ' is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

choose any of the 2 given points for (a, b) → (8, 9)

y - 9 = $\frac{1}{2}$ (x - 8) → " point- slope form"

(c) y = $\frac{1}{2}$ x + 5

the equation of a line in ' slope-intercept form ' is

y = mc + c

where m is the slope and c the y-intercept

expand and simplify the point- slope equation

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

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

y = $\frac{1}{2}$ x + 5 → " slope- intercept form"

6 0

3 years ago

Please help me with this problems!

Vikki [24]

Answer:

the answer is b because I know I just did that

5 0

3 years ago

Read 2 more answers