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ddd [48]
3 years ago
12

How to do this question plz ​

Mathematics
1 answer:
enyata [817]3 years ago
3 0

Answer:

  x = 10

Step-by-step explanation:

Use the Pythagorean theorem. The sum of the square of the sides is the square of the hypotenuse.

  x² +(√200)² = (√300)²

  x² = 300 -200

  x = √100 = 10

The length of the unknown side is 10 units.

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A square pyramid has a base length of 4 inches. The height of each triangular face is 12 inches. What is the surface area of the
Wittaler [7]

Answer:

The surface area of the given pyramid is 112 inches^{2}.

Step-by-step explanation:

Base length of the pyramid = 4 inches

Area of the base = length^{2}

                            = 4^{2}

                            = 16

Area of its base = 16 inches^{2}

Area of one of its triangular surface = \frac{1}{2} x base x height

                                 = \frac{1}{2} x 4 x 12

                                 = 2 x 12

                                 = 24 inches^{2}

Area of all its four triangular surfaces = 4 x 24

                                                       = 96 inches^{2}

surface area of the pyramid = sum of areas of all its surfaces

                                               = 16 + 96

                                       = 112 inches^{2}

The surface area of the given pyramid is 112 inches^{2}.

8 0
2 years ago
Help please I’m almost done also I’ll mark brainliest
tatuchka [14]

Answer:

this is a ratio of 4 inches:5 feet.

if one side becomes 30 feet, means that other one is also multiplied by 6.

4 * 6 = 24 or A

pls mark as brainliest

Step-by-step explanation:

4 0
2 years ago
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Answer:

x = -19/2      y = -33/2

Step-by-step explanation:

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x - 3x - 12 = 7

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x = -19/2

x - y = 7

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y = -33/2

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Answer:

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Step-by-step explanation:

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