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
dangina [55]
2 years ago
14

Please help! Number 7

Mathematics
1 answer:
ELEN [110]2 years ago
8 0

Answer:

the answer is A

because if the dot is filled in it has to be the greater than or equal to or less than or equal to sign. And the side that is shaded in is greater than one. so x must be greater than or equal to 1.

You might be interested in
50 points will give BRAINLIEST ASAP<br> Graph the function<br> f (x) = 3√x−2
Levart [38]

Answer:

use DESMOS it helps you alot

Step-by-step explanation:

4 0
3 years ago
PLEASE HELP ASAP
Crank

Option D: $f(x)=-2(x+2)(x-4)$ is the function

Explanation:

Let the general form of quadratic equation be $y=a x^{2}+b x+c$

The function passes through the intercepts (-2,0) and $(4,0)$ and also passes though the point $(-1,10)$

Substituting the points (-2,0), $(4,0)$ and $(-1,10)$ in the equation $y=a x^{2}+b x+c$, we get,

4a -2b+c=0  -----------(1)

16a +4b+c=0 ----------(2)

a-b+c=10    -----------(3)

Subtracting (1) and (2), we get,

\ \ 4a -2b+c=0\\ 16a +4b+c=0\\\---------\\ \  \ -12a-6b=0  -----------(4)

Subtracting (2) and (3), we get,

16a +4b+c=0\\\ \ a \ \ - \ \ b \ +c=10\\---------\\15a+5b=-10  ------------(5)

Multiplying equation (4) by 5 and equation (5) by 4, to cancel the term b when adding, we get,

-60a-30b=0\\\ 90a+30b=-60\\--------\\30a=-60\\\ \ a=-2

Thus, the value of a is a=-2

Substituting a=-2 in equation (4), we get,

$\begin{aligned}-12 a+6 b &=0 \\-12(-2)-6 b &=0 \\ 24-6 b &=0 \\ 24 &=6 b \\ 4 &=b \end{aligned}$

Thus, the value of b is b=4

Now, substituting the value of a and b in equation (1), we have,

$\begin{aligned} 4 a-2 b+c &=0 \\ 4(-2)-2(4)+c &=0 \\-8-8+c &=0 \\ c &=16 \end{aligned}$

Thus, the value of c is c=16

Now, substituting the value of a,b and c in the general formula $y=a x^{2}+b x+c$, we get,

y=-2x^{2} +4x+16

Taking out the common term as -2 we get,

y=-2(x^{2} -2x-8)

Factoring , we get,

$y=-2(x+2)(x-4)$

Thus, the function is $f(x)=-2(x+2)(x-4)$

7 0
3 years ago
Am I right , please tell me
julsineya [31]
Yes you are correct
60 * 360 / 40 = 540
3 0
3 years ago
Read 2 more answers
PLEASE HURRY IM BEING TIMED!
ddd [48]

Answer:

The answer is

\frac{26}{31}

GOOD LESSONS ♡

7 0
2 years ago
Doug is in line at the store. He has three items that cost ​$4.50​, ​$3.05​, and ​$1.50. Explain how Doug can add the cost of th
Angelina_Jolie [31]

Answer:

He can add through calculater or by doing addition in his mind

4 0
3 years ago
Read 2 more answers
Other questions:
  • The Rodriquez family drove 115 miles on 5 gallons of gasoline. Which equation can be used to find how far they can travel on a f
    13·2 answers
  • Solve for the variable a in this equation. <br><br> c = 8πab
    12·2 answers
  • Find the coordinates of the focus and equation of the directrix for the parabola given by
    10·2 answers
  • A student is attempting to find a formula for the sequence below. Which statement best applies to the sample mathematical work?
    9·2 answers
  • PLS HELP PUT #BRAINLIEST IF YOU WANT IT
    10·2 answers
  • A set of cards has 20 cards with stars, 10 cards with squares, and 15 cards with circles. Find the probability of each event whe
    5·1 answer
  • Select the graph of y= sin x.
    9·2 answers
  • Help please on quiz !!
    12·1 answer
  • Aileen earned $7 for her first babysitting job and $12 for her second babysitting job. What is the total amount she earned for t
    6·2 answers
  • Write an exponential decay function to model the situation. Compare the average rates of change over the given intervals.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!