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3 years ago

Factor the polynomial 3k^2+21k-3

Mathematics

1 answer:

Lunna [17]3 years ago

6 0

Answer:

$3k^{2} +21k-3\\3(k^{2} +7k-1)$

Step-by-step explanation:

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andrew has a cell phone plan that provides 300 free minutes each month fo a flat rate of $19 . for any minutes over 300, andrew

kow [346]

The precise equation that represents the situation is as follows:

$19, x ≤ 300
x > 300,
f(x) = 19 + 0.39(x - 300)

<h3>How to represent an equation?</h3>

His cell phone plan provides 300 free minutes each month for a flat rate of $19.

let

x = number of minutes used

Therefore,

$19, x ≤ 300

For any minutes over 300, Andrew is charged 0.39 per minute.

Therefore,

if x > 300

f(x) = 19 + 0.39(x - 300)

learn more on equation here: brainly.com/question/18127606

#SPJ1

4 0

2 years ago

Graph the linear equation. 3x−4y=12<br><br> Please show it on a graph

baherus [9]

Answer: The graph is attached.

Step-by-step explanation:

By definition, the line intersects the y-axis when $x=0$ .

Then, in order to find the y-intercept, substitute $x=0$ into the equation and solve for "y":

$3(0)-4y=12\\\\y=\frac{12}{-4}\\\\y=-3$

By definition, the line intersects the x-axis when $y=0$ .

Then, in order to find the x-intercept, you can substitute $y=0$ into the equation and then you must solve for "x". Then you get:

$3x-4(0)=12\\\\x=\frac{12}{3}\\\\x=4$

Knowing that the line passes through the points $(0,-3)$ and $(4,0)$ , you can graph it (The graph is attached).

5 0

4 years ago

Isabella earns simple interest on her savings account. She deposits $1,200 into her account and will have $1,344 after 2 years.

Yanka [14]

Answer: $1702

Step-by-step explanation: So in two years she gained 144 dollars in interest. In one year she gained 72. So, to get her interest in 7 years, multiply 72 by 7. You will get $502. Add 502 to 1200 and you get $1702.

Hope this helps

3 0

3 years ago

Find the measure of x.<br> 101<br> 140<br> 153

allsm [11]

What are the answer choices

4 0

3 years ago

Read 2 more answers

Find the value of x.

Crank

Answer: $x=76\°$

Step-by-step explanation:

By definition the angle formed by the intersection of two chords inside a circle is:

$Angle\ formed\ by\ two\ Chords=\frac{sum\ of\ intercepted\ Arcs}{2}$

You can observe in the figure that the angle formed by the intersection of the two chords measures 94°, and the intercepteed arcs are: x° and 112°.

Therefore, you need to substitute these values into the formula and solve for "x to find its value. Then:

$94\°=\frac{x+112\°}{2}\\\\(94\°)(2)=x+112\°\\\\188\°-112\°=x\\\\x=76\°$

5 0

3 years ago