2 years ago

A+b= -10 2a+b=-33 what is the value of b in the system of equations shown above

1 answer:

4 0

Simplest method: elimination.
Subtract the first equation from the second one.

(2a+b=-33)-(a+b=-10) gets you to a=-23.

Now plug that in for a and solve.

-23 +b=-10

b=13

You might be interested in

What does 6×3+(9-3)+1 equal?

Lelu [443]

Hi

6*3 + (9-3)
= 18 + 3
= 21

I hope that's help !

3 0

2 years ago

Read 2 more answers

a party rental company has chairs and tables for rent the total cost to rent 2 chairs and 3 tables is 29 dollars the total cost

melomori [17]

Answer:

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Samantha earns $22 per hour as a plumbing apprentice. How much does she earn per minute in cents?

m_a_m_a [10]

A. She would use hours to minutes, which you can do by dividing 22 by 60.
b. 22 / 60 = .366 repeating, or about .37 per minute

3 0

2 years ago

Nautical flags are used to represent letters of alphabets. The flag for the letter O consists of a yellow right triangle and a r

liraira [26]

Answer:

The length of a side of the flag is 7.2inches

Step-by-step explanation:

Let length = x

Let hypotenuse = x+3

Using Pythagoras' Theorem:

x^2 + x^2 = (x+3)^2

x^2 + x^2 = x^2 + 6x + 9

2x^2 = x^2 + 6x + 9

×^2 - 6x - 9 = 0

$x = \frac{ - b + - \sqrt{ {b}^{2} - 4ac } }{2a}$

x=[-(-6)+sqrt.(-6)^2-4(1)(-9)]/2(1)

×=[6+sqrt.72]/2

×=7.2inches

×=[-(-6)+sqrt.(-6)^2-4(1)(-9)]/2(1)

x=[6-sqrt.72]/2

×=-1.2(rej)

(PS. sqrt is square root)

(Correct me if i am wrong)

6 0

2 years ago

Read 2 more answers

In the past you paid $800 per month to rent your apartment. You now pay $900 per month for your rent. What is the percent increa

Leni [432]

The percent increase is 12.5%, 800 multiplied by 0.125 equals 100 and 100+800=900.

6 0

2 years ago

Read 2 more answers