2 years ago

Simplify by combining like terms.1. -5a - 4a + b

Mathematics

1 answer:

Bess [88]2 years ago

3 0

-9a+b final answer to it

You might be interested in

Somebody please help! I need an answer fast!

lina2011 [118]

7<n<8 is the right answer

6 0

3 years ago

Read 2 more answers

Which expressions are equal to 105?

Amanda [17]

Answer:

2•2²×100+5.

Step-by-step explanation:

5 0

2 years ago

6 points

kodGreya [7K]

Answer:

$y=-2\,(x+3)^2-3$

Step-by-step explanation:

Notice that they are asking you to write the equation of the parabola in vertex form, that is using the coordinates of the vertex $(x_v,y_v)$ in the expression:

$y-y_v=a\,(x-x_v)^2\\y=a\,(x-x_v)^2+y_v$

we can start by directly replacing the given vertex coordinates (-3, -3) in the expression, and then using the extra info on the point the parabola goes through in order to find the parameter $a$ :

$y=a\,(x-x_v)^2+y_v\\y=a\,(x+3)^2+(-3)\\y=a\,(x+3)^2-3\\-5=a\,(-2+3)^2-3\\-5=a\,(1)-3\\a=-5+3\\a=-2$

So, now we can write the full expression for the parabola:

$y=a\,(x+3)^2-3\\y=-2\,(x+3)^2-3$

8 0

3 years ago

Find the circumference of the given circle 11 ft

nasty-shy [4]

Answer:

69.12

Step-by-step explanation:

5 0

3 years ago

Write a variable expression for each word phrase: <br><br> the product of c and 3

mash [69]

Variables are symbols that are used to represent a number in an expression or equation.

There's one word phrase here, and it's answer is: c*3

If you need help with another one, just let me know! :)

7 0

3 years ago

Simplify by combining like terms.1. -5a - 4a + b​

Simplify by combining like terms.1. -5a - 4a + b