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1 year ago

Solve for x. please i need know

Mathematics

1 answer:

miss Akunina [59]1 year ago

4 0

Answer:

x = 18

Step-by-step explanation:

Vertically opposite angles are equal.

x + x + x + 90 = 144

3x + 90 = 144

Subtract 90 from both sides

3x = 144 - 90

3x = 54

Divide both sides by 3

x = 54/3

x = 18

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Troyanec [42]

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8 0

2 years ago

Determine if true:<br> 10x3-20=20

nexus9112 [7]

Answer:

False

Step-by-step explanation:

10x3=30

30-20=10

10=20

These equations dont match.

Hence, the equation is false

4 0

1 year ago

Read 2 more answers

Name the property used to make the conclusion. If 13=x, then x=13.

Marina86 [1]

That property would be the Symmetric<span> Property of </span><span>Equality</span>

7 0

2 years ago

For what value of x does 34x=27x-3

Anit [1.1K]

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

34x=27x−3

Step 1: Subtract 27x from both sides.

34x−27x=27x−3−27x

7x=−3

Step 2: Divide both sides by 7.

7x\7=−3\7

x=−3/7

8 0

2 years ago

The size of a TV is measured by its diagonal. You want to buy a TV that has a 32

ANEK [815]

The width of the TV is 27.9 inches

Step-by-step explanation:

Given,

Diagonal of TV = 32 inch

Height of TV = 15.7 inch

The diagonal makes the TV into a right triangle,

Therefore,

Diagonal = hypotenuse = c = 32 inch

Height = perpendicular = a = 15.7 inch

Width = base = b

Using pythagoras theorem

$a^2+b^2=c^2\\(15.7)^2+b^2=(32)^2\\246.49+b^2=1024\\b^2=1024-246.49\\b^2=777.51$

Taking square root on both sides

$\sqrt{b^2}=\sqrt{777.51}\\b=27.88$

Rounding off to nearest tenth

b = 27.9 inches

The width of the TV is 27.9 inches

Keywords: Pythagoras theorem, square root

Learn more about square root at:

#LearnwithBrainly

7 0

2 years ago