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Alinara [238K]
3 years ago
5

Help please with math!

Mathematics
2 answers:
Reika [66]3 years ago
5 0

Answer:

1/2

Step-by-step explanation:

If you do this:

20:2=10

14:2=7

12:2=6

You get dimensions of smaller triangle which is a half from bigger one.

disa [49]3 years ago
3 0

Answer:

scale factor is 1/2

Step-by-step explanation:

notice that the sides of ΔABC are one-half of the length of the sides 0f ΔDEF

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Step-by-step explanation:

tom saves 35%

and jerry saves 40%

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If 1/2 gallon of paints cover 1/4 of a wall,then how much paint is needed to cover the entire wall?
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PLS THIS IS MY LAST QUESTION
MrRa [10]

Answer: x = 5.625

Step-by-step explanation:  The triangles are similar; the side lengths of the large triangle are proportional to the lengths of the small triangle. The corresponding parts are proportional.

Use proportion. The total length of side FV is 16.

6:16 = x:15 . or 6/16=x/15

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5 0
3 years ago
Hi does anyone know how to solve this question if so please show the working out.
tester [92]

Explanation:

The Law of Sines is your friend, as is the Pythagorean theorem.

Label the unmarked slanted segments "a" and "b" with "b" being the hypotenuse of the right triangle, and "a" being the common segment between the 45° and 60° angles.

Then we have from the Pythagorean theorem ...

  b² = 4² +(2√2)² = 24

  b = √24

From the Law of Sines, we know that ...

  b/sin(60°) = a/sin(θ)

  y/sin(45°) = a/sin(φ)

Solving the first of these equations for "a" and the second for "y", we get ...

  a = b·sin(θ)/sin(60°)

and ...

  y = a·sin(45°)/sin(φ)

Substituting for "a" into the second equation, we get ...

  y = b·sin(θ)/sin(60°)·sin(45°)/sin(φ) = (b·sin(45°)/sin(60°))·sin(θ)/sin(φ)

So, we need to find the value of the coefficient ...

  b·sin(45°)/sin(60°) = (√24·(√2)/2)/((√3)/2)

  = √(24·2/3) = √16 = 4

and that completes the development:

  y = 4·sin(θ)/sin(φ)

6 0
3 years ago
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