Please help!!:

1 answer:

8 0

1) in order for two lines to be perpendicular, their gradients must multiply together to get -1

-1/3*b=-1

b=3

5=3(3)+b

5=9+b

b=-4

equation of the line is y=3x-4

2) parallel lines have the same gradient

4=2(-3)+b

4=-6+b

b=10

equation of the line is y=2x-10

You might be interested in

Using sin^2x+ cos^2 x=1 and other trig properties, simplify the following: (cos^2Ø*tan^2Ø)/(1-cos^2 Ø.

user100 [1]

$\dfrac{\cos^2\O\cdot\tan^2\O}{1-\cos^2\O}=\dfrac{\cos^2\O\cdot\tan^2\O}{\sin^2\O}=\dfrac{\cos^2\O}{\sin^2\O}\cdot\tan^2\O\\\\=\dfrac{1}{\dfrac{\sin^2\O}{\cos^2\O}}\cdot\tan^2\O=\dfrac{1}{\left(\dfrac{\sin\O}{\cos\O}\right)^2}\cdot\tan^2\O=\dfrac{1}{\tan^2\O}\cdot\tan^2\O\\\\=\dfrac{\tan^2\O}{\tan^2\O}=1$

$Used:\\\\\sin^2\O+\cos^2\O=1\to1-\cos^2\O=\sin^2\O\\\\\tan\O=\dfrac{\sin\O}{\cos\O}$

8 0

3 years ago

Read 2 more answers

Two numbers are in ratio of 2 to3 if the smaller number is 18 the larger number is what

Alex777 [14]

If you would like to know the value of the larger number, you can calculate this using the following steps:

2 ... 3
18 ... x = ?

2 * x = 3 * 18 /2
x = 3 * 18 / 2
x = 27

The correct result would be 27.

7 0

3 years ago

Read 2 more answers

Which of the following topics would lend itself only to a formal style of writing?

suter [353]

D because its more formal then the other ones.

3 0

3 years ago

What is 2,520 divided by 16?

maw [93]

Answer:

157.5 is the answer

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A batch of cookie dough will be sliced up into 100 cookies and then baked. 400 raisins have been included in the batch of dough,

Lesechka [4]

Answer:

if there is gonna be 100 cookies an 400 raisins in the batch there should be a 1% chance that no 1 or more cookie will come out with out raisins. You have more raisins than the number of cookies which if u ever bake cookies when adding in things like that you should add in as much raisin as there is cookie.

Step-by-step explanation:

6 0

3 years ago