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BigorU [14]
3 years ago
10

Will mark brainliest, worth 60 points

Mathematics
2 answers:
mrs_skeptik [129]3 years ago
6 0
21 is c
22 is b
23 is a
Ostrovityanka [42]3 years ago
3 0

Answer:

21 is option 3

22 is option 3

23 is option 1

Step-by-step explanation:

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I will mark as brainliest<br><br> Do 1-9
dangina [55]
To solve this problem, we need to know the formulas for the areas of each of these shapes. The formula for the area of a circle is πr², the area of a rectangle is b * h, the area for a square is s², and the area for a triangle is 0.5bh. Now we can solve.

1) This is a circle, so the area is πr² = π(6)² = 36<span>π square feet

2) This is a square, so the area is s</span>² = 12² = 144 square yards

3) This is a rectangle, so the area is b * h = 6 * 14 = 84 square inches

4) This is a rectangle, so the area is b * h = 7 * 3 = 21 square inches

5) This is a circle, so the area is πr² = π(4)² = 16<span>π square feet

6) This is a triangle, so the area is 0.5bh = 0.5 (8 * 8) = 0.5 * 64 = 32 yd.</span>²

7) This is a triangle, so the area is 0.5bh = 0.5 (5 * 10) = 50 * 0.5 = 25 yd.²

8) This is a rectangle, so the area is b * h = 10 * 2 = 20 in²

9) This is a square, so the area is s² = 9² = 81 ft²
5 0
4 years ago
PLEASE HELP ASAP what is the simplified value of the expersSion, below when x=2 and y =4 Problem: 4x+y/2y-x
Arada [10]

Answer:

all work is shown and pictured

6 0
3 years ago
Can u plz add these together.
Rainbow [258]

Answer:

1. -3    

2. 7      

3. -2        

4. 3

Step-by-step explanation:

1.      idk

2.     3.2 move 3b over to get 3.2-3b-4.7=-3.3 move 4.7 over to get

3.2b-3b=4.7-3.3 now 3.2b-3b=.2b and 4.7-3.3=1.4  .2b/.2=b   1.4/.2=7 so b=7

3.     4.6y-y+4=y-1.2 now switch the 4 and the y to read 4.6y-2y=-4-1.2

2.6y=-5.2 divide both sides by 2.6 to get y=-2

4.      7.5c-2.5c+8=-7 move 8 to other side to get 7.5c-2.5c=-8-7

5c=-15 divide both sides by 5 getting c=3

5 0
3 years ago
Write the expression of -2 and -18
iris [78.8K]
The expression is simply -2-18. When you have an expression like this, just put the together and the put a box around the first number don't forget the sign, and then the next put one around the sign and the number. If this doesn't make any since, sorry we just started this unit
8 0
3 years ago
Gary spends 10 per week on the internet and 13 hours per week playing video games. If Gary has five hours of free time per day w
Natalka [10]

Answer:

460% of free time is spent on internet and games .

Step-by-step explanation:

Given as :

The time spent by Gary on internet = 10 hours per week

The time spent by Gary on video games = 13 hours per week

So, Total time spent by Gary = 10 hours per week + 13 hours per week

                                                = 23 hours per week

The free time which Gary have = 5 hours

Now, percentage of free time spent on internet and games = x %

So, x % of 5 = 23

or, x % = \frac{23}{5}

∴  x% = 4.6

I.e x = 460 %

Hence  460% of free time is spent on internet and games . Answer

5 0
3 years ago
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