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Andreas93 [3]
3 years ago
9

Consider the sequence of steps to solve the equation: 3(x − 4) + 5x = 9x − 36 Given ⇒ 3(x − 4) + 5x = 9x − 36

Mathematics
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer:

A) Distributive Property.

Step-by-step explanation:

The distributive property is a(b + c) = ab + ac . Here we have 3(x - 4) = 3x - 12.

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Vertical angles are equal

5x - 40 = 3x + 8
5x - 3x = 8 + 40
2x = 48
x = 48/2
x = 24

m∠ABC = 3x + 8 = 3 * 24 + 8 = 80°

(or m∠ABC = 5x - 40 = 5 * 24 - 40 = 80°)
8 0
3 years ago
Complete the point slope equation of the line through(-1,-10)and(5,2).<br>y-6=​
Lynna [10]

Answer:

<h2>y - 6 = 2(x - 7)</h2>

Step-by-step explanation:

The point-slope of an equation of a line:

y-y_1=m(x-x_1)

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The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the poinys (-1, -10) and (5, 2). Substitute:

m=\dfrac{2-(-10)}{5-(-1)}=\dfrac{12}{6}=2

Put the value of the slope and the coordinateso f the point (5, 2), to the equation of a line:

y-2=2(x-5)

In the question we have y - 6 = ...

Therefore

y-2=2(x-5)    <em>subtract 4 from both sides</em>

y-6=2(x-5)-4          <em>use the distributive property</em>

y-6=2x-10-4

y-6=2x-14      <em>distributive</em>

y-6=2(x-7)

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3 years ago
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Step-by-step explanation:

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3 0
2 years ago
Read 2 more answers
URGENTTTT HELPPPPPPP please
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Given that ABC is a right triangle.

The length of AC = 10 and AB = 17

We need to determine the m∠B

<u>The measure of ∠B:</u>

The side opposite to ∠B is AC and the hypotenuse of the triangle is AB

The m∠B can be determined using the trigonometric identity,

sin B=\frac{opp}{hyp}

where opp=AC and hyp=AB

Substituting, we get;

sin B=\frac{AC}{AB}

Substituting the values, we get;

sinB=\frac{10}{17}

sin B=0.588

Taking sin^{-1} on both sides of the equation, we have;

B=sin^{-1}(0.588)

B=36.015^{\circ}

Rounding off to the nearest tenth, we get;

B=36.0^{\circ}

Hence, the measure of ∠B is 36.0°

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3 years ago
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