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natali 33 [55]
3 years ago
15

The following formula gives the area A of a trapezoid, where b and c are the bases of the trapezoid and h

Mathematics
1 answer:
Inga [223]3 years ago
7 0

Answer:

h = \frac{2A}{b + c}

Step-by-step explanation:

Given

A = \frac{1}{2}(b + c)h

Required

Solve for h

We have:

A = \frac{1}{2}(b + c)h

Multiply sides by 2

2A = (b + c)h

Make h the subject

h = \frac{2A}{b + c}

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Jared sells jewelry online he can make 25 necklaces from 375 beads yesterday he made 21 necklaces. How many beads did Jared used
irga5000 [103]

Answer:

315 beads

Step-by-step explanation:

The question above is calculated as:

25 necklaces = 375 beads

21 necklaces = x beads

Cross Multiply

25x = 21 × 375

x = 21 × 375/25

x = 7875 / 25

x = 315 beads

Hence, Jared used 315 beads to make 21 necklaces yesterday

8 0
3 years ago
Rich Makes $35 a week mowing lawns in his Neighborhood. Which Expression can be used to show how much money he makes in 8 Weeks?
Virty [35]
35 * 8 would be the expression.
6 0
3 years ago
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What adds to get 5 and multiplies to get 24
Anvisha [2.4K]
Three adds to get 5 and also it multiplies to get 24 

Hope i Helped

4 0
3 years ago
6. The base of a triangular field is three times its height. If the cost of cultivating the field
dedylja [7]

Answer:

base = 519.62, height = 173.21 m

Step-by-step explanation:

Let the base and height of the triangle be represented by b and h respectively.

Thus,

b = 3h

Area of a triangle = \frac{1}{2} x base x height

For the given triangle,

area = \frac{1}{2} x b x 3h

       = \frac{3}{2}bh

Area of the triangle = \frac{3}{2}bh

To determine the number of hectares,

36 per hectare = 486

hectare = \frac{486}{36}

             = 13.5

numbers of hectares = 13.5

Area of the hectares = number of hectares x 10 000 m²

                                   = 13.5 x 10 000

                                  = 135000

Total area of the hectares = 135 000 m²

So that,

area of the hectares = area of the triangle

area of the triangle = \frac{3}{2}bh

135 000 = \frac{3}{2}bh

270000 = 3bh

bh = \frac{270000}{3}

     = 90000

bh = 90000

But, b = 3h

3h x h = 90000

3h^{2} = 90000

h^{2}  = \frac{90000}{3}

     = 30000

h = \sqrt{30000}

  = 173.2051

h = 173.21 m

So that,

b = 3 x 173.2051

  = 519.6153

b = 519.62

Therefore, the base of the triangle is 519.62 m, while the height is 173.21 m.

7 0
3 years ago
110 is 60% of what number?
Zigmanuir [339]

Answer: 183.33

Step-by-step explanation:

We have, 60% × x = 110

or,

60

100

× x = 110

Multiplying both sides by 100 and dividing both sides by 60,

we have x = 110 ×

100

60

x = 183.33

If you are using a calculator, simply enter 110×100÷60, which will give you the answer.

3 0
3 years ago
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