3 years ago

Kinda blurry sorry but which one?

Mathematics

2 answers:

tester [92]3 years ago

8 0

Answer:

A (first one)

Step-by-step explanation:

The arrow on the number line is going backwards, meaning less than. The open circle also plays a role.

Rama09 [41]3 years ago

7 0

Answer:

Option A

Step-by-step explanation:

Open circle represents less than and it pointing to the left.

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If (6y − 11)(6y 11) = ay^2 − b, what is the value of a? the value of a is ____________.

Triss [41]

(6y - 11)(6y + 11) = ay² - b |use (a - b)(a + b) = a² - b²

(6y)² - 11² =ay² - b

36y² - 121 = ay² - b |add b to both sides

ay² = 36y² - 121 + b |divide both sides by y² ≠ 0

a = (36y² - 121 + b)/y²

$\boxed{a=\dfrac{36y^2-121+b}{y^2}}$

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3 years ago

Anna paid € 2800 for a dress. Payment was made after the price of the dress was reduced by 30%. What was the starting price?

aliina [53]

Answer:

$4000

Step-by-step explanation:

so $2800 was the starting price

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So 2800=70%

2800/7=400

400=10%