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3 years ago

PLEASE HELP!!!!! TIMED!!! Will give brainliest!! 70 POINTS!!!!!

Mathematics

2 answers:

algol [13]3 years ago

5 0

Answer:

it is c

Step-by-step explanation:

Debora [2.8K]3 years ago

3 0

Answer:C

Step-by-step explanation:

The constant and the variable relationship is p<9.That means it is "Alva spent less than 9%"

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Plz Help Meee!!!!! >.<

lora16 [44]

The answer is: the light rays refract toward a central axis.

5 0

3 years ago

Write the following in terms of sin θ only. cot θ

sveta [45]

$\bf cot(\theta)=\cfrac{cos(\theta)}{sin(\theta)}
\\\\\\
sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)
\\\\\\
cos(\theta)=\pm\sqrt{1-sin^2(\theta)}\\\\
-----------------------------\\\\
cot(\theta)=\cfrac{cos(\theta)}{sin(\theta)}\implies cot(\theta)=\cfrac{\pm\sqrt{1-sin^2(\theta)}}{sin(\theta)}$

6 0

2 years ago

X^2 + 7x – 18 = 0 a {–2, 9} b {–9, 2} c {2, 9} d {–2, –9}

Sedaia [141]

Answer:

b)-9,2

Step-by-step explanation:

x^2+7x-18=0

x^2+9x-2x-18=0

x(x+9)-2(x+9)=0

(x+9)(x-2)=0

therefore

x=-9

x=2

6 0

2 years ago

Which pair of angles shares ray a f as a common side?

Elden [556K]

Answer:

it's the last one.

Step-by-step explanation:

both of them have ÀF as part of their angle.

4 0

3 years ago

Read 2 more answers

X2 + 4x -9 = (x + a)? +b Find the value of a and the value of b. a = b= ?

Burka [1]

Step-by-step explanation:

x² + 4x - 9

= (x + 2)² - 13

a = 2, b = -13.

4 0

3 years ago