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3 years ago

Question 4) e) and f) please Tonks

Mathematics

2 answers:

melisa1 [442]3 years ago

7 0

E) (x-2)(x-1)
substitute x = 0
= (0-2)(0-1)
= (-2)(-1)
= 2

f)2x(3x+2)
Substitute x = 10
2*10(3(10)+2)
= 20(30+2)
= 20(32)
= 640

Hope this helps!

lora16 [44]3 years ago

4 0

I hope this helps you

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2. Consider the function, f(x)=x^3+x^2-9x-9

Sedaia [141]

The intercepts of the graph are:

x-axis interception: $\left(-1,\:0\right),\:\left(-3,\:0\right),\:\left(3,\:0\right)$ .

y-axis interception: $\left(0,\:-9\right)$ .

See the graph of the function $f(x)=x^3+x^2-9x-9$ in the attached image.

<h3>Constructing a graph</h3>

For constructing a graph we have the following steps:

Determine the range of values for x of your graph.

For this exercise, for example, we can define a range -4<x<4. In others words, the values of x will be in this interval.

Determine the points

Replace these x-values in the given equation. For example:

When x=-4, we will have: $\left(-4\right)^3+\left(-4\right)^2-9\left(-4\right)-9=-21$ . Do this for the all x-values of your ranges.

See the results for this step in the attached table.

Draw the graph

Mark the points <u>x</u> and<u> y</u> that you found in the last step. After that, connect the dots to draw the graph.

The attached image shows the graph for the given function.

<h3>Find the x- and y-intercepts</h3>

The intercepts are points that crosses the axes of your plot. From your graph is possible to see:

x-axis interception points (y=f(x)=0) are: $\left(-1,\:0\right),\:\left(-3,\:0\right),\:\left(3,\:0\right)$ .

y-axis interception point (x=0) is: $\left(0,\:-9\right)$ .

Learn more about intercepts of the graph here:

brainly.com/question/4504979

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2 years ago

Solve the system by substitution.<br> y = 3x + 28<br> y = -4x

Mazyrski [523]

Answer:

(-4, 16)

Step-by-step explanation:

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2 years ago

Your friend comes from a large family. This list shows the ages of all of the children in her family. What is the median age of

Lyrx [107]

Answer:

It is 11 and 4/7 I am pretty sure hope I helped!

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2 years ago

What is the square root of 100 times two divided by two

gogolik [260]

Answer:

10 is your answer

Step-by-step explanation:

√((100 * 2)/2)

Simplify. First, follow the Parenthesis. Combine 100 with 2

100 * 2 = 200

Next, divide by 2

200/2 = 100

Root 100

√100 = √10 * √10 = 10

10 is your answer

An easier way to solving this is to first cancel out the 2's ( multiplying 2 and dividing 2 would do nothing), and just square rooting 100, giving you the answer 10.

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3 years ago

Read 2 more answers

Anyone knows the answer

murzikaleks [220]

Answer:C

Step-by-step explanation:

3.1 x 10^(-4) x 8.5 x 10^(-2)

3.1 x 8.5 x 10^(-4) x 10^(-2)

26.35 x 10^(-4-2)

26.35 x 10^(-6)

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2.635 x 10^(1-6)

2.635 x 10^(-5)

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3 years ago