Which of the following is a unit of area?

cm2
feet
m3
inches

Answers

Answer 1

Answer: Unit of area is square units.

And an example here is cm²

Answer 2

Answer: cm2 is the unit of area

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A student conducts a survey to determine which students at the high school completed an algebra course during their freshman year. 49, 34, and 48 students are selected at random from the Sophomore, Junior, and Senior classes. Each class has a population of 496, 348, and 481 respectively. Which type of sampling did the student use?random stratified systematic cluster
Which of the following is the best estimate of the area of the irregular shape? HELP PLEASE!!

(1/4x)-2= x2

complete the equation

Answers

-1

1/4×-2= -2/4 -2/4×2/1= -1

Solve 4^(2x) = 7^(x−1).

Answers

To solve for x in the given equation, use natural logarithms. Getting the natural logarithms of both sides, will be ln 4^(2x) = ln 7^(x-1). This is also equal to 2x ln 4 = (x-1) ln 7. Rearranging the equation, 2x/(x-1) = ln 7/ln 4. The right side is equal to 1.4037. Thus, the value of x is -2.3539.

Ralph spends 15 1/3 hours per month playing tennis. How many hours does he play tennis in a year? (There are twelve months in a year.)a. 182 2/3
b. 164
c. 184
d. 164 1/3

Answers

Number of hours that Ralph spends playing tennis in a month = 15 1/3 hours
      = 46/3 hours
Number of months in a year = 12 months
Then
The total number of hours that Ralph spends playing tennis = (46/3) * 12 hours
      = 46 * 4 hours
   = 184 hours
So from the above deduction we can see that the total time spent by Ralph in playing tennis in a year is 184 hours. So the correct option among all the options given in the question is option "c". I hope the procedure is clear enough for you to understand.

184 hours a year cause 15x12 is 180hours and 20x 12 is 240 minutes and 240 minutes is 4 hours so 180+4 is 184 hours

10Which graph represents the solution set of this inequality?
-20 +7 <23
Choose 1 answer:
Tv
--10-9-8-7-6-5-4-3-2
0
1
2
3
45
-5
3 2 1
0
1
2
3
4 5
6 7
8
9 10
©
-5-4-3-2-1
0
1
2
3
4
5
6
7
8 9 10
--10-9-8-7-6
-5
4
3
2
1
0
1
2
3 4 5
Helpppp me

Answers

Answer:

what are all these number for???

Step-by-step explanation:

Answer:

where is the graphs

Step-by-step explanation:

Solve the following equation by transforming it into a perfect square trinomial.* 3x2 + 12x = 63

Answers

$3x^2 + 12x = 63\n \n3x^2+12x-63=0\n \n3(x^2+4x-21)=0\n \n3[x^2+4x+3x-3x-21] =0 \n \n3[x^2+7x-3x-21] =0 \n \n3[x(x +7 )-3(x+7)] =0$

$3 (x +7 ) (x-3) =0 \n \nx+7=0 \ \ \ or \ \ \ x-3 =0\n \nx=-7 \ \ \ or \ \ \ x=3$

The concert lasts 60 minutes, and the songs are all the same length. The choir sings a total of 12 songs, 2 of which are sung by the sopranos only. For how many minutes do the sopranos sing by themselves? Solve the equations using a letter for the unknown quantity.