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3 years ago

Plz help with this question I don’t get it is an image

Mathematics

1 answer:

mars1129 [50]3 years ago

8 0

Answer:

Step-by-step explanation:

For this question, we know that x represents the thousands of square feet in the stadium. We also know that the stadium is 18 thousand square feet. Therefore, the amount of thousands of square feet, or x, is 18. We can then plug 18 in for x in the equation, getting

$C(x) = \frac{7250000}{18+60} \\= \frac{7250000}{78}\\= 92948$

as our cost

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Which points are on a plane curve described by the following set of parametric equations?

Vlad1618 [11]

ANSWER

The points (1,2) and (7,2) lie on the given curve.

EXPLANATION

The given parametric equations are:

$x = 3t + 4$

and

$y = 2 {t}^{2}$

We make t the subject in the first equation to obtain:

$t = \frac{x - 4}{3}$

We substitute this into the second equation to get:

$y =2{(\frac{x - 4}{3} )}^{2}$

When x=1,

$y = 2 {(\frac{1 - 4}{3} )}^{2} = 2$

When x=2

$y =2{(\frac{2- 4}{3} )}^{2} = \frac{8}{9}$

When x=7,

$y =2{(\frac{7 - 4}{3} )}^{2} = 2$

Therefore the points (1,2) and (7,2) lie on the given curve.

8 0

3 years ago

Please see the attachment below. Please explain.

-Dominant- [34]

I believe your answer is J. The total has to be less than or equal to 50, and you're already spending 7 dollars for a ticket.

Hopefully this helps!

5 0

3 years ago

Read 2 more answers

Question 4(Multiple Choice Worth 1 points) (07.04 LC) Factor completely 49x2 − 9. (7x + 3)(7x − 3) (7x + 3)(x − 3) (7x − 3)(7x −

scoundrel [369]

Answer:

Step-by-step explanation:

We take a look at this expression: $49x^2-9$ and notice that both terms are square numbers. $49x^2=(7x)^2$ and $9=3^2$ .

There is a specific formula that I highly recommend you memorize involving differences of squares. It states that given the difference of squares $a^2-b^2$ , it can always be factored into $(a+b)(a-b)$ .