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Gennadij [26K]
3 years ago
9

NEED HELP ASAP PLEASE!!!!!!!!

Mathematics
2 answers:
Lostsunrise [7]3 years ago
7 0
ANSWER

X = 70

Explanation: in an isosceles triangle the two bases equal each other

Equation set up - 2x + 2x + 40 = 180
MatroZZZ [7]3 years ago
4 0

Step-by-step explanation:

PQR = PRQ = 2x ° ( base angle of an isosceles are equal ) .

therefore

PQR + PRQ + QPR = 180° ( sum of angles in a triangle )

2x + 2x + 40 = 180

4x + 40 = 180

subtract 40 from both sides

4x = 140

divide through by 4

x = 35°

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Evaluate7.2÷0.38.(Round to the hundredth place as needed.)
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Answer:

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Step-by-step explanation:

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3 years ago
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3 years ago
Multiply the following polynomials
Sophie [7]

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Step-by-step explanation:

please give me brainlest!!

Step by step solution :

Step  1  :

Trying to factor as a Difference of Squares :

1.1      Factoring:  x2-2

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

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Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 2 is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares.

Final result :

 (2x + 7) • (x2 - 2)

6 0
3 years ago
Read 2 more answers
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