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3 years ago

5

Problem page a total of 420 tickets were sold for the school play. they were either adult tickets or student tickets. the number

of student tickets sold was two times the number of adult tickets sold. how many adult tickets were sold?

1 answer:

34kurt3 years ago

3 0

280 student tickets were sold

140 adult tickets were sold

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yan [13]

Answer:

$y=-\dfrac{1}{2}(x+4)^2-1$

Step-by-step explanation:

Vertex form: $y=a(x-h)^2+k$

where:

$(h, k)$ is the vertex
$a$ is some constant

Given:

vertex = (-4, -1)
point on parabola = (-2, -3)

Substitute given values into the formula to find $a$ :

$\implies -3=a((-2)-(-4))^2+(-1)$

$\implies -3=a(2)^2-1$

$\implies -3=4a-1$

$\implies -2=4a$

$\implies a=-\dfrac{2}{4}=-\dfrac{1}{2}$

Therefore, the equation of the parabola is:

$y=-\dfrac{1}{2}(x+4)^2-1$

6 0

2 years ago

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Candice bought 2 dozen eggs 9 of the eggs were bad . what percentage of the eggs were good

Dominik [7]

Answer:

63%

Step-by-step explanation:

2 dozen eggs is 24

24-9=15

15/24=.625 but when you rounded .63

4 0

3 years ago

What is the correct answer? 35?

earnstyle [38]

It’s 29
The chicken is 20
The eggs are 3
And the bananas are 6

3 0

4 years ago

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Pls help im new so pls can u help me <br><br> Factorise<br> x^2+18x+80

sergejj [24]

Answer:

(x + 10)(x + 8)

Step-by-step explanation:

Given

x² + 18x + 80

Consider the factors of the constant term (+ 80) which sum to give the coefficient of the x- term (+ 18)

The factors are + 10 and + 8 , since

10 × 8 = + 80 and 10 + 8 = + 18 , then

x² + 18x + 80 = (x + 10)(x + 8) ← in factored form

5 0

3 years ago

Twice the sum of a number and 5 is 22. What is the number

alexira [117]

Answer:

x=8.5

Step-by-step explanation:

Write an equation

2x+5=22

x represents he unknown number

Solve for x:

2x+5-5=22-5

2x=17

2x/2=17/2

x=8.5

6 0

3 years ago

Read 2 more answers