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
Diano4ka-milaya [45]
3 years ago
11

A circular mirror has a diameter of 12 inches what is the area in sqaure inches of the mirror

Mathematics
2 answers:
zhenek [66]3 years ago
4 0
A≈113.1in² lolololololololololololol
Oksana_A [137]3 years ago
3 0
113.1in² is the answer
You might be interested in
-4x+7 x= -1 evaluate the expression
NeX [460]
Hello luv! So here is how I will evaluate this expression
-4x+7, x=-1 so you are using substitution
-4(-1)+7
=11

:)

3 0
3 years ago
Which statements about the system are true?
Kruka [31]

2 Answers:

  • B)  The lines are parallel
  • C)  The lines have the same slope.

Parallel lines always have equal slope, but different y intercepts.

==========================================================

Explanation:

Let's solve the second equation for y

3y - x = -7

3y = -7+x

3y = x-7

y = (x-7)/3

y = x/3 - 7/3

y = (1/3)x - 7/3

The equation is in y = mx+b form with m = 1/3 as the slope and b = -7/3 as the y intercept. We see that the first equation, where y was already isolated, also has a slope of m = 1/3. The two equations of this system have the same slope. Choice C is one of the answers.

However, they don't have the same y intercept. The first equation has y intercept b = -4, while the second has b = -7/3. This means that they do not represent the same line. They need to have identical slopes, and identical y intercepts (though the slope can be different from the y intercept of course) in order to have identical lines. So we can rule out choice D and E because of this.

Because the two equations have the same slope, but different y intercepts, this means the lines are parallel. Choice B is the other answer.

Parallel lines never touch or intersect, which in turn means there is no solution point. A solution point is where the lines cross. We can rule out choice A.

I recommend using your graphing calculator, Desmos, GeoGebra, or any graphing tool (on your computer or online) to graph each equation given. You should see two parallel lines forming. I used GeoGebra to make the graph shown below.

5 0
3 years ago
Gloria talked on her cell phone for 320 minutes the first month,243 minutes the second month,and 489 minutes the third month.Her
ratelena [41]

Answer:

I believe she spent $150 for the first three months.

The hidden question i think is how many minutes did gloria spend in total OR how many packages did gloria need to buy. sorry i haven't done hidden questions in a long time.  

4 0
3 years ago
A is a 4x4 matrix and A^2 + 4A - 5I = 0. If det(A+2I)>0, enter det(A+2I)
maw [93]
\mathbf A^2+4\mathbf A-5\mathbf I=0
\implies\mathbf A^2+4\mathbf A+4\mathbf I=(\mathbf A+2\mathbf I)^2=9\mathbf I
\implies\det\bigg((\mathbf A+2\mathbf I)^2\bigg)=\det(9\mathbf I)
\implies\det(\mathbf A+2\mathbf I)^2=9^4\det\mathbf I
\implies\det(\mathbf A+2\mathbf I)=\pm\sqrt{9^4}
\implies\det(\mathbf A+2\mathbf I)=9^2=81

where we take the positive root because we're told that the determinant is positive.
5 0
3 years ago
Megan Hikes 15.12 mi in 6.3 hours. If Megan hike the same number of miles each hour, how many miles did she hike each hour.
rodikova [14]

Answer:

The answer is 2.4 Miles per hour  

Step-by-step explanation:

15.12 divided by 6.3= 2.4 MPH

6 0
3 years ago
Read 2 more answers
Other questions:
  • The GCF of an odd number and an even number is always even. True or false?
    13·1 answer
  • -1+5/4x=-16<br> What number is x representing?
    7·1 answer
  • Write four numbers that fall between 0.123 and 0.124
    14·1 answer
  • Using synthetic division, find (2x4 - 3x3 - 20x - 21) = (x - 3).
    15·1 answer
  • Factor 2x2 -5x - 3 Group of answer choices (2x - 1) ( x + 3 ) (x - 1) ( x + 3 ) (2x +1) ( x - 3 ) (x + 1) ( x - 3 )
    11·1 answer
  • Please help me I don't know what number e stand for ​
    10·1 answer
  • There are 12 female performers in a dance recital. The ratio of men to women is 2:3. How many men are in
    11·1 answer
  • Using the equation 4x^3-6x^2-144x+8, find the function values f(-3) and f(-4) at the interval {-4,5}
    7·1 answer
  • PLEASE HELP!!! SILL GIVE BRAINLIEST (2-52)
    7·2 answers
  • A professor has 7 books they are trying to arrange on a shelf. If the professor selects 3 books at a time, how many different ar
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!