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Irina-Kira [14]
4 years ago
14

I will mark as brainliest Do 1-9

Mathematics
1 answer:
dangina [55]4 years ago
5 0
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
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Can anyone help best answer will get a Brainiest
77julia77 [94]

Answer:

she goes 60mi for every hour for 2 hrs.

then she stops for 30 min which means the line = flat.

After that she drives at 30mi for every hour, but because she drives for 1 hour only, that’s 30 mi, so the line stops in the middle of the square (aka 30 mi after the stop time she took for her flat tire).

7 0
2 years ago
The CBGC pays college and high school students $5.75 per hour to tutor the younger boys and girls. If one of those tutors works
Levart [38]

Answer:

1. $35.075

2. 43.5 hours

3. 70%

4. Danny is correct

5. Abe's score out of the 30 points of the last quiz to get an overall checkup quiz grade of 80% should be 28.5

Step-by-step explanation:

The pay per hour for student tutors = $5.75

1. A tutor who worked 3.4 hours on Monday and 2.7 hours on Thursday has worked, 3.4 + 2.7 = 6.1 hours for the week, therefore

The week earning for the tutor = 6.1 × 5.75 = $35.075

2. The Club's tutoring budget per week = $250

The number of tutoring hours that can be provided per week is given by the relation;

\frac{The \, Club's \ tutoring\  budget \ per \, week}{The \, pay \ per \, hour\,  for\,  student\,  tutors} = \frac{\$250}{\$5.75/hour} = 43.47826  \approx 43.5 \, hours

3. The score of 21 out of 30 as a percentage is given as follows;

\frac{21}{30} \times 100 = 70\%

4. Where the second score is 45 out of a total of 60 points, we have;

\frac{45}{60} \times 100 = 75\%

Therefore, the increase in Abe's score is 5%, therefore, Danny is correct

5. To raise his checkup quiz grade to 80% overall, then we should have;

\frac{70 + 75 + Q}{300} =\frac{80}{100}

Where:

Q = The percentage grade of the last quiz

(145 + Q)×100 = 80×300 = 24000

145 + Q = 240

Q = 240 - 145 = 95%

Therefore, he has to score, 95% of 30 on the last quiz, which is thus;

\frac{95}{100} \times 30 = 28.5

Abe's score out of the 30 points of the last quiz to get an overall checkup quiz grade of 80% = 28.5 points.

7 0
3 years ago
Planning for a party, Carla mixed 3/4 liters of lemon concentrate with 21/4 liters of water to make 3 liters of lemonade. The pa
andrey2020 [161]

Answer:

78/4

Step-by-step explanation:

it seems right

6 0
3 years ago
There are 87 green balls and 41 red balls in a bag. If one is randomly selected, what is the probability that it will be a green
garri49 [273]

Number of green balls = 87

Number of red balls = 41

So total number of balls = 128

Probability formula = number of events / number of possible outcomes.

So, the probability that a ball randomly selected will be a green ball will be

\frac{87}{87+41}

equals 0.6796875 converting to nearest hundredth as 0.68


5 0
3 years ago
Please help me with this answer
Bad White [126]
Peter bought 8 maple donuts

If there are 25 fewer maple than chocolate, then we know there are at least 25 chocolate donuts. if we subtract those 25 chocolate from the total of 41, we have 16 left. with the 25 chocolate donuts taken out, the number of maple and chocolate donuts in the remaining 16 are the same, meaning there are 8 of each. Since the 25 we subtracted earlier were all the chocolate, there were 33 chocolate and 8 maple. Therefore, Peter bought 8 maple donuts.
8 0
4 years ago
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