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professor190 [17]
3 years ago
12

Plzzzz heppppppp meeeeeee

Mathematics
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:

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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} wherea,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
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