Mathematics: Solve 5 ( 4x-5 ) = 155

Solve 5 ( 4x-5 ) = 155 - id5451556659198, ariannecama

uzezi

27.01.2022

x = 9

Step-by-step explanation:

you can solve with 2 way. First:

a( b + c) = ab + aca ( b - c) = ab - aca ( b + c) -d = ab + ac -d

So => 5 ( 4x - 5 ) = 5.4x - 5.5

5.4x - 5.5 = 20x - 25

20x - 25 = 155

20x - 25 + 25 = 155 + 25

20x = 180

x = 9

Second way:

if $\frac{a}{b} = c$ , a = c.bif a.b = c , $a = \frac{c}{b}$ or $b = \frac{c}{a}$

So: 5 ( 4x-5 ) = 155

(4x -5) = $\frac{155}{5}$

(4x-5) = 31

4x -5 +5 = 4x +5

4x = 36

x = 9

Hope this helps ^-^

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khalilah2000ortbfy

05.11.2021

The correct option is (B)

Step-by-step explanation: We are given a right-angled triangle ABC, where AC is the hypotenuse and

We are to select the equation that could be used to find the measure of ∠B.

With respect to angle B,

perpendicular, AC = 3 units, base, AB = 6 units and hypotenuse, BC = 3√5 units.

So, the sine and cosine of angle B can be written as

and

Thus, the correct equation that could be used to find the measure of ∠B is

Option (B) is CORRECT.

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