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3 years ago

12

What is the answer to 3 × 4/5=

2 answers:

SpyIntel [72]3 years ago

7 0

12/5, because 3*4 is 12 and then it 12/5

Salsk061 [2.6K]3 years ago

3 0

1. Multiply the fractions which equal 3/1 times 4/5.
2. Multiply the numbers 3 times 4, then 1 times 5. Then just add them up.
The answer is 12/5 or 2 2/5.

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How do you do this?

ELEN [110]

Use the Pythagorean Theorem: a² + b² = c².

a and b are the legs of the right triangle, and c is the hypotenuse.

2) 5² + b² = 6²
25 + b² = 36
b² = 11
b = 3.3 cm

3) 7² + b² = 8²
49 + b² = 64
b² = 15
b = 3.9 cm

4) a² + 5² = 13²
a² + 25 = 169
a² = 144
a = 12 cm

8 0

3 years ago

Find the area.<br> 5cm<br> 3cm<br> 4 cm

Ostrovityanka [42]

Answer:

6 cm²

Step-by-step explanation:

Since 3 side lengths are given, I assume that this figure is a triangle. The area of a triangle can be determined by using hero's formula.

$\text{Area of triangle} = \sqrt{\text{s(s - a)(s - b)(s - c)}$

⇒ s = Perimeter/2

⇒ a, b, and c = side lenths of triangle

<u>Replacing a, b, and c as the given side lengths:</u>

$\implies \text{Area of triangle} = \sqrt{\text{s(s - 5)(s - 3)(s - 4)}$

<u>Determining the perimeter of the triangle:</u>

$\text{Perimeter of triangle = Sum of it's side lengths}$

$\implies \text{Perimeter of triangle =}\ 5 + 4 + 3$

$\implies \text{Perimeter of triangle =}\ 12 \ \text{cm}$

<u>Determining the half of perimeter:</u>

$\text{Half of perimeter} = s = \dfrac{\text{Perimeter}}{2}$

$\implies s = \dfrac{12}{2}$

$\implies s = 6$

<u>Replacing the value of "s" in the formula:</u>

$\implies \text{Area of triangle} = \sqrt{\text{6(6 - 5)(6 - 3)(6 - 4)}$

<u>Evaluating the area:</u>

$\implies \text{Area of triangle} = \sqrt{\text{6(6 - 5)(6 - 3)(6 - 4)}$

$\implies \text{Area of triangle} = \sqrt{\text{6(1)(3)(2)}$

$\implies \text{Area of triangle} = \sqrt{\text{6(6)}$

$\implies \text{Area of triangle} = 6 \ \text{cm}^{2}$

6 0

1 year ago

How do you do fraction

MakcuM [25]

Answer:

Step-by-step explanation:

7 0

3 years ago

Pls help with this one I will give brainliest thank you! Number 5

melamori03 [73]

Answer:

The volume of the fish tank is 48000 cubic centi meter.

Step-by-step explanation:

The volume of a Cuboid is l*b*h (length*breadth*height)

Here,

length(l) =60 cm

breadth(b)= 20 cm

height(h)=40 cm

Volume=l*b*h

Volume= 60cm*20cm*40cm

Volume= 48000 cubic centimeter

5 0

3 years ago

Read 2 more answers

Sum of equal angles is 360<br> 1/3x+(x-20)+40+(x-10)

kicyunya [14]

x = 150 did this help you?

6 0

3 years ago