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leonid [27]
3 years ago
7

The equation below describes a parabola. If a is negative, which way does the parabola open?

Mathematics
2 answers:
const2013 [10]3 years ago
6 0
Given equation : y=ax^2 
Taking a to the other side we have, x^2=(1/a)*y
 This equation describes a parabola that opens up.
 When a is negative, the focus is on the negative y-axis, therefore, the parabola opens down.
 The answer is a. down.
sladkih [1.3K]3 years ago
4 0

Answer:down

Step-by-step explanation:

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At a family reunion, a family friend brings 20 pounds of ice and 30 cups. Which expression shows the greatest common factor, usi
Eddi Din [679]

The expression for the greatest common factor of 20 and 30 using the distributive property is 10(2 + 3)

Pounds of ice = 20

Number of cups = 30

The relation for the distributive property :

a × (b + c)

Expand ;

a × (b + c) = (a × b) + (a × c) = ab + ac

Finding the greatest common factor of 20 and 30 ;

  • 20 = 2 × 10

  • 30 = 3 × 10

(2 × 10) + (3 × 10)

According to the distributive property

(2 × 10) + (3 × 10) = 10(2 + 3)

Therefore, the expression for the greatest common factor is 10(2 + 3)

Learn more :brainly.com/question/15263211

6 0
3 years ago
a rhombus has an area of 60 square centimeters. if the length of one diagonal is 12 cm, find the length of the other
AlekseyPX

Answer:

10 cm

Step-by-step explanation:

The area (A) of a rhombus is calculated as

A = \frac{1}{2} × d₁ × d₂ ( d₁ and d₂ are the diagonals )

Here A = 60, d₁ = 12, thus

60 = 0.5 × 12 × d₂ = 6 d₂ ( divide both sides by 6 )

d₂ = 10

The other diagonal is 10 cm

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3 years ago
Which set of numbers is infinite?
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B is the answer to your question
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How do you solve this problem? (x+3) cubed
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You would expand becausee it isn't equal to anything

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we can use binomial theorem or pascal's triangle
anyway, pascal's triangle is more practicl for this one

so
for the 3rd power
(a+b)^3=1a^3+3a^2b^1+3a^1b^2+1b^3

a=x
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(x+3)^3=1x^3+3x^2(3^1)+3x^1(3)^2+1(3)^3=
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7 0
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Pretty sure that’s true
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3 years ago
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