Solve each system by graphing. y=x2−5x−4 y=−2x

C = 100M/Q Solve the formula for Q. Q =

ICE Princess25 [194]

Step-by-step explanation:

please mark me as brainlest

8 0

3 years ago

Read 2 more answers

Does multiplying a decimal by 0.1 always give the same answer as dividing by 10?expplain.

klasskru [66]

Yes cause both of them are equal to 10% so it has the same value ...

8 0

3 years ago

A rectangular deck has an area of 320 ft squared. The length of the deck is 4 feet longer than the width. Find the dimensions of

AnnyKZ [126]

So, the area of a rectangle is LxW. For this rectangle, LxW=320. We also know that the length is 4 feet longer than the width, that is L=W+4. With some substitution, we get(W+4)W=320. Simplify to get W^2+4w=320. Now the fun part! When we complete the square, we'll end up with (W+___)^2, right? So, let's take half of 4, which is 2, and square it. That's 4. Add that 4 to what we already have:W^2+4W+4. But remember, what we do to one side of an equation we must do to the other side. So we really have W^2+4W+4=320+4.We simplify and get W^2+4W+4=324. Factor the left side of the equation and get(W+2)^2=324. When we take the square root of both sides of the equation we getW+2=18, so W=16, which means the length (4 ft longer) is 20 ft. Do you have questions about the completing the square part? In a trinomial, the coefficient in the x term is the sum of the two factors and the constant term is the product. So, in the completing the square, you have the sum of a number added to itself or 2 times that factor. That's why we take half of it. Then, we square it to get the constant term. Square completed. But don't forget to keep the balance in the equation by also adding the constant term to the other side.

3 0

3 years ago

Can anyone help me with these two plz

Evgen [1.6K]

Answer:

Part 1) The scale factor is $1.5$