1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
garik1379 [7]
3 years ago
12

F(x)=-3x^2-6x Find f(−9)

Mathematics
2 answers:
White raven [17]3 years ago
5 0

Answer:

f(-9)= -189

Step-by-step explanation:

f(-9)= -3(-9)^2-6(-9)

f(-9)= -3(-9)^2 +54

f(-9)= -3(81) +54

f(-9)= -243 + 54

f(-9)= -189

Anni [7]3 years ago
3 0

Answer:

Your brain.

Step-by-step explanation:

All you have to do is plug the value of -9 into the equation everywhere you see an 'x' and if you are being asked this question I assume you have basic mathematical skills

You might be interested in
What is 3/4 of 3/9?
Artyom0805 [142]
3/4 = .75    so you have to find 75 % of 3/9
100% = 3/9
1% = (3/9)/100
75% = (3/9)/100 * 75 =.25
8 0
3 years ago
An unprepared student makes random guesses for the ten​ true-false questions on a quiz. Find the probability that there is at le
hoa [83]

Answer:

0.999

Step-by-step explanation:

At least 1 correct means, 1 correct, 2 correct, 3 correct ... until 10 correct. That would be a long process to calculate.

<em>Instead we use the complement rule to calculate.</em>

<em>P(x\geq1)=1-P(x</em>

<em />

<em>So we need to find P(x<1). So this is getting 0 answers correct, or 10 incorrect.</em>

<em />

In true false question, probablity of correct is 1/2 and incorrect is 1/2, hence,

Probability of 10 incorrect is (1/2)^10

Thus,

P(x\geq1)=1-(\frac{1}{2})^{10}=0.999

So the answer is 0.999 (rounded to nearest thousandth)

3 0
3 years ago
Really need helpllllll!!!!!
kirza4 [7]

Answer:

The relationship of the number of months and the total amount paid is proportional for both Hanks and Lynn.

Step-by-step explanation:

Let us divide the equation into 2 parts.

Hanks

Hank paid $2000 up front when he bought the car and he pays $200 every month. Therefore, the total amount paid (y)  and the number of month (x)can be expressed as follows.

Let

x = number of month

y = total amount paid

y = 2000 + 200x

The relationship between amount paid and the number of months is proportional

Lynn

She did not paid anything upfront but she paid $275 every month. Therefore,

x = number of month

y = total amount paid

y = 275x

This relationship between amount paid and number of month is directly proportional

7 0
3 years ago
What is the image of (-9,0) after a reflection over the line y=x
SpyIntel [72]

Answer:

(0,-9)

Step-by-step explanation:

The image of a point (x,y) over a line y=x is given by the co-ordinate rule:

(x,y) → (y,x)

So, when we reflect a point over the line y=x, the x co-ordinate and y co-ordinate change their places.

Here, (x,y) is (-9,0). So, from the above rule, after reflection over the line y=x, the image has the following co-ordinates:

(0,-9)

4 0
3 years ago
Jinko bhi dimaag ki jarurt h vo lelo<br>specially for Vrinda -,-"<br>boht jarurt h &gt;_&lt;​
Alex777 [14]

Answer:

\:  \:  \:  \:

Chukliya bhaiya iss chiz khi toh mere ko zarurat thi zindagi mein!!(╥﹏╥)(╥﹏╥)

3 0
2 years ago
Read 2 more answers
Other questions:
  • What is the range of possible credit scores?
    6·1 answer
  • A scientist estimates that the mean nitrogen dioxide level in a city is greater than 30 parts per billion. To test this estimate
    7·1 answer
  • Select each transformation that carries a square onto itself.
    8·1 answer
  • -1+3-5+7-...+97-99 plz help me
    11·1 answer
  • 10w + 4w = -84 solve by combining like terms show all steps leading to awnser plz
    7·1 answer
  • PLEASE HELP ME!!!!!!!!!!!!
    8·1 answer
  • Find the total area of 2cm 8cm 9cm 1cm 7cm 7cm
    5·1 answer
  • An eagle changes it’s elevation by an average of -14.2 meters every second for 4.8 seconds. What is the change in elevation of t
    14·2 answers
  • X^2-7x+10=0?? Please and thank you
    5·1 answer
  • Work out 5 x 10^6 / 4 x 10^4<br> Give your answer as an ordinary number.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!