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Marina86 [1]
3 years ago
6

Need help in algebra fast

Mathematics
1 answer:
Gennadij [26K]3 years ago
5 0

Answer:

A

Step-by-step explanation:

This is a strict inequality so the line must be dotted, meaning it can only be A or D.

The inequality says that y is less than -2x+4 so we want the region under the line, making A the correct answer.

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Question 5 of 20
Ymorist [56]

Answer:

B

Step-by-step explanation:

The first term is - 9 and the common difference is 6.

Formula is - 9+(n-1)*6

3 0
3 years ago
What is another way to make 57 cents with coins
Fed [463]
2 quarters, 7 pennies
5 dimes, 7 pennies
10 nickels, 7 pennies
7 0
3 years ago
PLEASE ANSWER THIS QUESTION! I BEG OF YOU
Law Incorporation [45]

The difference between the rate of change of B and the rate of change of A is 15.

<h3>How to get the difference in the rates of change?</h3>

First, we need to get the two rates of change.

We have two linear functions.

A: y = 35*x

For function A the rate of change is the slope, wich is 35.

Function B is graphed.

Remember that if a line passes through two points (x₁, y₁) and (x₂,y₂) then the slope is:

a = \frac{y_2 - y_1}{x_2 - x_1}

In the graph, we can see that line B passes through (0, 0) and (1, 50), then the slope is:

a = \frac{50 - 0}{1 - 0} = 50

Then the rate of change of B is 50.

The difference between the rates of change is:

diff = 50 - 35 = 15

If you want to learn more about rates of change:

brainly.com/question/8728504

#SPJ1

5 0
2 years ago
The equation of a parabola is y=x2+6x+9. Write the equation in vertex form.
nignag [31]

Answer:

Step-by-step explanation:

Vertex form is accomplished by completing the square on the quadratic. Do this by first setting the parabola equal to 0 then moving the constant over to the other side:

x^2+6x=-9

Now take half the linear term, square it, and add it to both sides. Our linear term is 6. Half of 6 is 3, and 3 squared is 9:

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

The reason we do this is to create a perfect square binomial on the left:

(x+3)^2=0 (obviously the 0 results from the addition of 9 and -9). Move the 0 back over to the other side and set the quadratic back equal to y:

(x+3)^2+0=y

This gives you a vertex of (-3, 0), which is a minimum value, since the parabola opens upwards.

6 0
3 years ago
-10x+45 find x when x =15
leonid [27]
Your answer is -105 pal
3 0
3 years ago
Read 2 more answers
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