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3 years ago

A student is trying to solve the system of two equations given below:

2 answers:

7 0

(y+z=6) * -5 is the best answer because when you add the two equations together the y will cancel and you will be left with z's in the equation.

netineya [11]3 years ago

3 0

Answer:

The answer is B.

Step-by-step explanation: Lol Its been 4 years already since you asked. But i took the test so thats how i know.

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joe drove 408 miles using 16 gallons of gas at this ratr how many mokrs would he drive using 11 gallons of gas

stiv31 [10]

I was on the right track, lol. 280.5 miles.

7 0

3 years ago

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(2)+(-13)=<br>whats the answer?

ziro4ka [17]

Answer:

$- 11$

Step-by-step explanation:

$2 + ( - 13) \\ 2 - 13 = - 11$

5 0

3 years ago

Subtract. (6x - 3) - (2x -2) What is the answer?

kirill115 [55]

4x-1 all u got to do is remove the parentheses and collect the like terms

6 0

3 years ago

Write an expression to represent the perimeter of the figure below. rectangle with 2x-3 and x+2

In-s [12.5K]

Hi there!

The perimeter is when you add all the sides of a shape. In a rectangle, two sides are the same, and so are the other two. So, if the two sides are 2x-3 and x+2 the expression will be:

2(2x-3) + 2(x+2)

If we were to simplify this, it would be

4x-6+2x+4
6x-2

Hope this helps!

4 0

3 years ago

The Super Bounce brand of bouncy balls rebounds to 85% of the height from which it was dropped. Write both the explicit and recu

jarptica [38.1K]

Answer:

Explicit formula is $h(n)=4(0.85)^{n-1}$ .

Recursive formula is $h_n=0.85h_{n-1}$

Step-by-step explanation:

Step 1

In this step we first find the explicit formula for the height of the ball.To find the explicit formula we use the fact that the bounces form a geometric sequence. A geometric sequence has the general formula , $a_{n+1}=ar^{n-1}.$ In this case the first term $a_o=4$ , the common ratio $r=0.85$ since the ball bounces back to 0.85 of it's previous height.

We can write the explicit formula as,

$h(n)=4(0.85)^{n-1}.$

Step 2

In this step we find the recursive formula for the height of the ball after each bounce. Since the ball bounces to 0.85 percent of it's previous height, we know that to get the next term in the sequence, we have to multiply the previous term by the common ratio. The general fomula for a geometric sequene is $a_n=a_{n-1}\times r.$

With the parameters given in this problem, we write the general term of the sequence as ,

$h(1)=4\\h(n)=h_{n-1}\times 0.85.$

8 0

3 years ago

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