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3 years ago

Fine the angle of the triangle using sides

Mathematics

1 answer:

nadya68 [22]3 years ago

8 0

Answer:

35.54

Step-by-step explanation:

use inverse tan

soh cah toa

we have both opposite and adjacent so we are using tangent

$tan^{-1} (\frac{5}{7} )$

put that into a calculator and it would give you approximately 35.54 degrees

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Find the value of x:

slega [8]

Answer:

x = 20

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Using ΔAHC , then

∠ACH = 180 - (2x + 100) = 180 - 2x - 100 = 80 - 2x

∠ECD = ∠ACB ( vertical angles are congruent ), thus

∠ECD = ∠ACH + ∠HCB, that is

3x = 80 - 2x + x

3x = 80 - x ( add x to both sides )

4x = 80 ( divide both sides by 4 )

x = 20

7 0

4 years ago

Can anyone solve ? This one is beyond me

Makovka662 [10]

Answer:

$Rate = 0.13$

Step-by-step explanation:

Given

$y = \sqrt[3] x$

Required

Determine the average rate of change over [2,7]

This is calculated as:

$Rate = \frac{f(b) - f(a)}{b - a}$

In this case:

$b = 7$ and $a = 2$

So, we have:

$Rate = \frac{f(7) - f(2)}{7-2}$

$Rate = \frac{f(7) - f(2)}{5}$

From the table:

f(7) = 1.91

f(2) = 1.26

$Rate = \frac{1.91 - 1.26}{5}$

$Rate = \frac{0.65}{5}$

$Rate = 0.13$

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3 years ago

What are the solutions to the following equation? x^2+8x+15=0

zubka84 [21]

Answer: It can be either one.

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3 years ago

George and his dad are planning to attend the state fair. an adult ticket is $19. the price of an adult ticket is one third the

mote1985 [20]

Answer:

Step-by-step explanation:

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