All categories

3 years ago

(a+2)(a-1) - (a+1)(a-2), if a = 2

Mathematics

1 answer:

Artist 52 [7]3 years ago

8 0

Answer:

Step-by-step explanation:

(a+2)(a-1) - (a+1)(a-2)

put a=2

(2+2)(2-1) - (2+1)(2-2)

4*1 -3*0

4-0

You might be interested in

Help me solve for the right triangle

AleksAgata [21]

Answers:

B = 50

a = 10.9

c = 17.0

================================================

Explanation:

This is a right triangle, so the acute angles are complementary, meaning they add to 90

B+40 = 90

B+40-40 = 90-40

B = 50

Also, because this is a right triangle, we can use trig ratios to compute the missing sides

tan(angle) = opposite/adjacent

tan(40) = a/13

a = 13*tan(40)

a = 10.908

a = 10.9

cos(angle) = adjacent/hypotenuse

cos(40) = 13/c

c*cos(40) = 13

c = 13/cos(40)

c = 17.0

note: make sure your calculator is in degree mode

7 0

3 years ago

Is 1/3 greater than 1/2???????????

CaHeK987 [17]

Answer:

Step-by-step explanation:

half is bigger then 1/3 think of it like this split a pizza into 2 pieces and the other into 3 take one out of both which is bigger if that helps

8 0

3 years ago

For each of the equations below, solve for y in terms of x. !<br> a. 2x – 3y = 12

ira [324]

Answer:

$\large\boxed{y=\dfrac{2}{3}x-4}$

Step-by-step explanation:

$2x-3y=12\qquad\text{subtract}\ 2x\ \text{from both sides}\\\\2x-2x-3y=12-2x\\\\-3y=12-2x\qquad\text{divide both sides by (-3)}\\\\\dfrac{-3y}{-3}=\dfrac{12}{-3}+\dfrac{-2x}{-3}\\\\y=-4+\dfrac{2}{3}x$

7 0

3 years ago

Can someone ONE person tutor me in math?plsss

Rina8888 [55]

Answer:

I can

Step-by-step explanation:

I'm taking precalculus currently

5 0

2 years ago

Read 2 more answers

In one day, a book store earned $253 in sales for 4 copies of a new cookbook and 5 copies of a new science fiction novel. On the

Aloiza [94]

Answer: cookbook $40 and science $15

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

(a+2)(a-1) - (a+1)(a-2), if a = 2​

(a+2)(a-1) - (a+1)(a-2), if a = 2