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3 years ago

Help me please on this Equation! Equation practice with angles..

Mathematics

2 answers:

Andreyy893 years ago

8 0

∠A and ∠B are corresponding angles, which means they have the angle measure. Since you know this you can put A and B into an equation and isolate x.

7x + 40 = 3x + 112
7x - 3x = 112 - 40
4x = 72
x = 72/4
x = 18

Now that you know what x is, you can find the angle for ∠A.

7x + 40
= 7(18) + 40
= 126 + 40
= 166°

Therefore, ∠A is 166°

Degger [83]3 years ago

8 0

Answer: x = 18, ∠A = 166°

Step-by-step explanation:

The relationship between ∠A and ∠B is that they are corresponding angles, which means they are congruent (equal).

∠A = ∠B

7x + 40 = 3x + 112

4x + 40 = 112 subtracted 3x from both sides

4x = 72 subtracted 40 from both sides

x = 18 divided both sides by 4

∠A = 7x + 40

= 7(18) + 40

= 126 + 40

= 166

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Ugo [173]

Answer:

see explanation

Step-by-step explanation:

Using the cosine and tangent trigonometric ratios and the exact values

cos30° = $\frac{\sqrt{3} }{2}$ and tan30° = $\frac{1}{\sqrt{3} }$ , then

cos30° = $\frac{adjacent}{hypotenuse}$ = $\frac{6}{m}$ = $\frac{\sqrt{3} }{2}$ ( cross- multiply )

$\sqrt{3}$ × m = 12 ( divide both sides by $\sqrt{3}$ )

m = $\frac{12}{\sqrt{3} }$ ← rationalise by multiplying numerator/ denominator by $\sqrt{3}$ )

m = $\frac{12}{\sqrt{3} }$ × $\frac{\sqrt{3} }{\sqrt{3} }$ = $\frac{12\sqrt{3} }{3}$ = 4 $\sqrt{3}$

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tan30° = $\frac{opposite}{adjacent}$ = $\frac{n}{6}$ = $\frac{1}{\sqrt{3} }$ ( cross- multiply )

$\sqrt{3}$ × n = 6 ( divide both sides by $\sqrt{3}$ )

n = $\frac{6}{\sqrt{3} }$ ← rationalise the denominator

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7 0

3 years ago

What are the slope and the y-intercept of the linear function that is represented by the table? x y –1 0 0 3 The slope is –3, an

tiny-mole [99]

Answer:

The y intercept is 3

Step-by-step explanation: The y interception ocurrs when X=0,so in the x,y pais you have (0,3), indicating that when X=0, Y=3. Also, according to the information, the linear equation would be: y=mx+b being m=slope and b the interception of the y axis, so the equation would be: y =-3x+3.

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4 years ago

1/4 ÷ 2/3 show,step please

kicyunya [14]

$\frac{1}{4}$ ÷ $\frac{2}{3}$ is the equation

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So what that means is that you flip the second fraction and multiply

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Now the equation is $\frac{1}{4}$ × $\frac{3}{2}$ which equals $\frac{3}{8}$

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4 years ago

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notsponge [240]

Answer:

# of terms: 2

inConstant(s): might be wrong but i think its 5

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Highest degree: 5

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8 0

3 years ago

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A patio set is on sale for 33% off. You have $815 saved. The retail price of the set is $1050. There is a 7% sales tax added. Wh

Westkost [7]

Answer:

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4 years ago

Help me please on this Equation! Equation practice with angles..​

Help me please on this Equation! Equation practice with angles..