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valina [46]
3 years ago
8

Corresponding angles Find the value of x

Mathematics
1 answer:
aliya0001 [1]3 years ago
7 0

Answer:

x = 54

Step-by-step explanation:

These are corresponding angles assuming that both transversals are parallel. Since these angles are corresponding, they must be congruent which means that both measures are the same.

Now the basic algebra can be done to find x:

(x + 12)° = 66°

(x)° = (66 – 12)°

(x)° = (54)°

x = 54

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If DF= 9x-39, find EF.
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4.333333

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Are you looking for a graph of the equation?
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Meters and centimeters are units of length in the metric system. True or False?
alexandr1967 [171]

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True

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7 0
3 years ago
Solve the quadratic equation<br> HINT: Answers will be a decimals<br> 2x2 - 12x+8 = 3
Oduvanchick [21]

Answer:

x= 5.55 and 0.45

Step-by-step explanation:

Quadratic Equation = (-b±√b²-4(a)(c))÷2(a)

Get equation = to 0 by subtracting the 3 on the right side of the = sign

2x² - 12x + 5

Identify the variables

a=2

b=-12

c=5

Put them into the quadratic equation

(-(-12)± √-12² - 4(2)(5))÷2(2)

Simplify

(12 ±√144 - 40)÷4

(12±√104)÷4

Now split into 2 equations (one with addition one with subtraction) because of the ± then continue simplifying

(12 - √104)÷4                  (12 + √104)÷4

(12 - 10.198039)/4          (12 + 10.198039)/4

5.54950975                  0.45049025

Round

5.55                               0.45

6 0
3 years ago
Rachel is using grouping to find the factors of a quadratic expression. She has reached the step shown below. Determine the fact
Feliz [49]

Answer: First option is correct.

Step-by-step explanation:

Since we have given that

If the factored form is given by

(3x-4)(x+2)

Then its standard form will be given by

(3x-4)(x+2)\\\\=3x^2+6x-4x+8\\\\=3x^2+2x+8

if factored form is given by

(3x+2)(x+4)

Then its standard form will be given by

(3x+2)(x+4)\\\\=3x^2+12x+2x+8\\\\=3x^2+14x+8

Hence, only first option is correct.

5 0
4 years ago
Read 2 more answers
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