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Viktor [21]
3 years ago
14

Please help and explain ( Brainliest for answer!)

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
7 0

Answer:

AD = 3

Step-by-step explanation:

Pythagoras theorem formula: a² + b² = c² (c being the hypotenuse, the longest side of the triangle).

Using this formula, you can easily say that c²-b²=a². c=5, b=4, making the equation 5² - 4² = a ².

Expanding the formula, you'll get 25 - 16 = a².

25 - 16 = 9.

This means that 9 = a².

To find a, you need to root 9. Using a calculator, you'll know that this number is 3, meaning that AD = 3.

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A badminton club has 330 members. 240 are adults and the rest are children. Two thirds of the children are boys and the rest are
Margaret [11]

Answer:

The number of boys last year will be 50 boys

Step-by-step explanation:

330 members with 240 adults

The number of children will be;

330-240 = 90

2/3 of 90 are boys

= 2/3 * 90 = 60 boys

Number of girls is 90-60 = 30

Ratio of adults:boys:girls

= 240:60:30

divide through by 30

= 8:2:1

b) A year ago, there were 200 adults but the ratio still remains same

Let the number of girls be x, the number of boys will be 2x

Thus, total number is 200 + x + 2x = 200 + 3x

Total ratio is 8 + 2 + 1 = 11

mathematically;

8/11 * (200 + 3x) = 200

8(200 + 3x) = 11(200)

1600 + 24x = 2200

24x = 2200-1600

24x = 600

x = 600/24

x = 25

So the number of boys will be 25 * 2 = 50

3 0
3 years ago
The area of the window is 54 ft.². Find the dimensions in feet. Width is (2x-3)ft and length is x ft.
denis-greek [22]

Answer:

34

Step-by-step explanation:

because multiply 54 feet is what you get is 34

5 0
3 years ago
Total pay before deductions is known as .
Leto [7]
Total pay before deductions is gross pay <==
total pay after deductions is net pay
6 0
3 years ago
PLEASE HELP<br> Will mark BRAINLIEST
Lerok [7]

i just want tp know what app this is or what yall are learning over here

8 0
3 years ago
I need help this dosent make sense
horsena [70]
1. 7 + -10 = -3.
2. -3 + -8 = -11
3. 4 + -5 = -1
4. 2 + -6 = -4
(You basically need to add negative numbers to positive numbers in order to get negative numbers.)
7 0
3 years ago
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