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Aneli [31]
3 years ago
9

Which of the following describe an angle with a vertex at E? Check all that apply.

Mathematics
2 answers:
zvonat [6]3 years ago
5 0

Answer:

FED and DEF

Step-by-step explanation:

vertex is the middle letter

Llana [10]3 years ago
3 0

Answer:  The correct options are

(A) DEF.

(C) FED.

Choices:

A. DEF B. DFE C. FED D. EFD

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Solve the equations by factoring:<br><br>x^2−3x−40=0<br><br>4x^2−81=0
Alja [10]

Answer:

see explanation

Step-by-step explanation:

Given

x² - 3x - 40 = 0

Consider the factors of the constant term (- 40) which sum to give the coefficient of the x- term (- 3)

The factors are - 8 and + 5, since

- 8 × 5 = - 40 and - 8 + 5 = - 3, thus

(x - 8)(x + 5) = 0 ← in factored form

Equate each factor to zero and solve for x

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------------------------------------------------------

Given

4x² - 81 = 0 ← this is a difference of squares and factors in general as

a² - b² = (a + b)(a - b), thus

4x² - 81

=(2x)² - 9²

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2x + 9 = 0 ⇒ 2x = - 9 ⇒ x = - \frac{9}{2}

2x - 9 = 0 ⇒ 2x = 9 ⇒ x = \frac{9}{2}

8 0
3 years ago
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If Sean earns $8.50 per hour sand made a total of $80.75 today, How many hours did he work?
Serggg [28]
80.75 / 8.50 = 9.5
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8 0
3 years ago
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What is the value of the expression 8^−2 ?
muminat
_Brainliest if helped!

1 over 64 

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8 0
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