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Dimas [21]
3 years ago
5

45-45-90...find the value of x?

Mathematics
1 answer:
andrey2020 [161]3 years ago
4 0

Answer:

<h2>         x = 19</h2>

Step-by-step explanation:

If the angles of a triangle are 45°, 45° and 90°, the the sides of the triangle are x. x and x√2

x√2 = 19√2   ⇔  x = 19

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Juanita begins to factor an expression as shown. x2+3x−18=(x+)(x−) What numbers should be placed in the boxes from left to right
stich3 [128]

Answer:

Option A is the correct answer.

Step-by-step explanation:

Here we need to factorize  x²+3x−18

The coefficient of x is 3 and the constant is -18

Which means

           The sum of factors is 3

           The product of factors is -18

The factors satisfying are  6 and -3

Here the factors are given in the type (x+)(x−)

     So the value after plus is 6 and value after - is 3

Option A is the correct answer.            

6 0
3 years ago
Read 2 more answers
The areas of two similar octagons are 9 m² and 25 m². What is the scale factor of their side lengths? PLZ HELP PLZ PLZ PLZ
torisob [31]

Answer:

\frac{3}{5}

Step-by-step explanation:

Let the side length for the octagon having 9m² as area = x

Side length for the octagon having area of 25m² = y.

Thus:

\frac{9}{25} = (\frac{x}{y})^2 (area of similar polygons theorem)

The scale factor of their sides would be \frac{x}{y}. Which is:

\sqrt{\frac{9}{25}} = \frac{x}{y}

\frac{\sqrt{9}}{\sqrt{25}} = \frac{x}{y}

\frac{3}{5} = \frac{x}{y}

Scale factor of their sides = \frac{3}{5}

6 0
2 years ago
PLEASE!! gr10 math 45pts
velikii [3]

Answer:

Step-by-step explanation:

the math is the nexlation when the filaction comes to hand and then u add with the nexlation and that the answer

3 0
2 years ago
HELLPPPP! WILL GIVE BRAINLIEST!
MArishka [77]
6.15x = 123
123 ÷ 6.15 = 20
x = 20 hours.
3 0
3 years ago
Cómo se justifica la congruencia entre 2 triángulos, uno de ellos con un ángulo de 90 y otro de 37 y el otro triángulo con un án
tigry1 [53]

Answer:

I speak english sorry bro

6 0
3 years ago
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