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3 years ago

5x : 9 = 8:3 Calculate the value of x.

1 answer:

7 0

Answer:
4.8

Explanation:
Please see the picture attached!

I hope this helps! Please comment if you have any questions.

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A parabola intersects the x-axis at x=3 and x=9 what is the x-coordinate of the parabola's vertex?

KiRa [710]

Here we are given the x intercepts at x=3 and x=9

So let us try to make quadratic equation for this using given information.

We have factors in the form (x-a)(x-b)

where a and b are x intercepts given to us.

So rewriting in factored form:

$y=(x-3)(x-9)$

Now let us simplify it:

$y=x^{2}-12x+27$

Let us find the vertex now,

For a quadratic equation of the form:

$y=ax^{2}+bx+c$

For x coordinate , we have the formula,

$x=\frac{-b}{2a}$

So using this formula for our equation,

$x=\frac{-(-12)}{2(1)}$

So x = 6

Answer: The x-coordinate of the parabola's vertex is 6.

7 0

3 years ago

Read 2 more answers

Solve for p -10p = -40 ???

scoundrel [369]

Answer:

p = 40/9

Step-by-step explanation:

p - 10p = -40

-9p = -40

p = -40/(-9

p = 40/9

8 0

2 years ago

Andy has 901 cards for a big game if he gives away 789 how much does he have left

Leokris [45]

Answer:

the answer is 112

Step-by-step explanation:

901-789=112

4 0

2 years ago

john receives a day worth of pay, p, for 4 days of newspaper delivery. He spent half of his money on gas. Then he spent 5$ on co

kirill [66]

Answer:

Let's assume John gets p for each day so his total is 4p. He spends half of that on gas, (4p)/2 = 2p. He has 2p left. Now subtract 5 from 2p for the coffee, and there is 35 left. So 2p - 5 = 35. Right? Now you can solve for p, by simplifying that equation.

Step-by-step explanation:

3 0

3 years ago

6 students took a test, the dot plot shows the score of 5 of these students. The average score of students is 21 ? What was the

bazaltina [42]

Answer:

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Step-by-step explanation:

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4 0

2 years ago