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Sonja [21]
3 years ago
5

75% of 7th graders are returning to school. If there are 300 7th graders returning to school, how many total 7th graders are the

re?
Mathematics
1 answer:
bagirrra123 [75]3 years ago
4 0

Answer:

there are 350 in all of the 7th grade

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Please help me with this
Zolol [24]

Answer:

294.5 m²

Step-by-step explanation:

shaded region = area of major sector + area of triangle

central angle of major sector = 360° - 130° = 230°

area of sector = area of circle × fraction of circle

A = π × 11.1² × \frac{230}{360}

   = \frac{x11.1^2(230)\pi }{360} ≈ 247.3 m²

area of triangle = 0.5 × 11.1 × 11.1 × sin130° ≈ 47.2 m²

shaded area = 247.3 + 47.2 ≈ 294.5 m²

7 0
3 years ago
Read 2 more answers
Convert the equation:
Licemer1 [7]

Answer:

(x+1)²/6 - (y+3)²/12 = 1

Step-by-step explanation:

The standard form of writing the equation of an hyperbola is expressed as;

(x-h)²/a² - (y-b)²/b² = 1 where (h,k) is the centre of the hyperbola.

Given the equation:

6x²-3y²+12x-18y-3 = 0

We are to convert it to the standard form of writing the equation of a hyperbola.

Collecting the like terms will give;

(6x²+12x)-(3y²+18y)-3 = 0

Divide through by 3

(2x²+4x)-(y²+6y)-1 = 0

Completing the square of the equation in parenthesis and adding the constants to the other side of the equation:

(2x²+4x)-(y²+6y+(6/2)²)-1 = 0+(6/2)²

(2x²+4x)-(y²+6y+9)-1 = 9

2x²+4x -{(y+3)²} = 9+1

2x²+4x - (y+3)² = 10

Divide through by 2

x²+2x -(y+3)²/2 = 5

(x²+2x+(2/2)²)-(y+3)²/2 = 5+(2/2)²

(x²+2x+1) - (y+3)²/2 = 5+1

(x+1)²-(y+3)²/2 = 6

Divide through by 6

(x+1)²/6 - (y+3)²/12 = 1

The resulting equation is the required standard form of a hyperbola with centre at (-1, -3)

8 0
3 years ago
Please help! Use the model to figure these out. Will mark brainliest if you answer both questions correctly.
sergij07 [2.7K]
4 and the second answer choice.
4 0
3 years ago
A rectangular prism has a length of 6 meters, a height of 8 meters, and a width of 5 meters. What is its volume, in cubic meters
Hatshy [7]

Answer:

Volume = 240 cubic meters

Step-by-step explanation:

6 x 8 x 5 = 240

(Length x Width x Height)

6 0
2 years ago
The fourth graders at Mathews Elementary are having a car wash to earn money for an upcoming field trip. If they wash 30 cars, a
photoshop1234 [79]

Answer:

$300

Step-by-step explanation:

If the fourth graders receive $10 of donation for each car they wash, to know the total earnings, we just need to multiply the value of the donation for each car by the total number of cars they washed.

As they washed 30 cars, and they earned $10 for each car, we multiply both values to know the total earning: 30*10 = $300

8 0
3 years ago
Read 2 more answers
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