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3 years ago

Giovanna has a score of

Mathematics

1 answer:

12345 [234]3 years ago

7 0

Answer:'

-9.7 minus, in 13

Step-by-step explanation:

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Does anyone know how to do this question ??

Viktor [21]

Y^2-9^2

(y-9)(y+9)

To see if its right:

y*y+y*9-9*y-9*9
y^2+9y-9y-81
y^2-9^2

4 0

3 years ago

Last year 190 student attended the spring dance and the total cost was 1250. Two years ago 175 people attended and the total cos

kondor19780726 [428]

Unit cost of a ticket = Income from ticket sales / number of tickets sold:

$1250
--------------- = $6.58 per ticket
190 tickets

Again:

$1175
--------------- = $6.71
175 tickets

While ticket prices do change (usually increase) from year to year, it's unusual to see such a situation here.

Don't have any guidelines by which to determine the "fixed cost of a ticket".

If we use the cost of a ticket of 2 years ago ($6.58/ticket), then the income from the sale of 225 tickets this year would be ($6.58/ticket)(225 tickets), or $1480.50.

6 0

4 years ago

Solve the given inequality and graph the solution on the number line<br>-x/2+3/2<5/2

AURORKA [14]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Factor out in steps. . 3p^2-2p-5.

inn [45]

$3p^2-2p-5=3p^2-5p+3p-5=p(3p-5)+1(3p-5)\\\\=\boxed{(3p-5)(p-1)}$

6 0

3 years ago

Read 2 more answers

Your consulting firm is submitting a bid for a big contract. From previous data, you know your firm has a 51% of successfully la

GREYUIT [131]

Answer:

P(S/A) = 0.6235

Step-by-step explanation:

Let's call S that you successfully bid, S' that you unsuccessfully bid, A that the agency asked for more information and A' that the agency didn't asked for more information.

So, the probability P(S/A) that the bid is successful given that the agency asks for more information is calculated as:

P(S/A) = P(S∩A)/P(A)

Where P(A) = P(S∩A) + P(S'∩A)

Then, the probability P(S∩A) that you successfully bid and the agency asked for more information is:

P(S∩A) = 0.51 * 0.7 = 0.357

Because your firm has a 51% of successfully landing the contract and if you successfully bid, then the probability the agency asks for information is 70%.

At the same way, the the probability P(S'∩A) that you unsuccessfully bid and the agency asked for more information is:

P(S'∩A) = (1-0.51) * 0.44 = 0.2156

So, P(A) and P(S/A) are equal to:

P(A) = 0.357 + 0.2156 = 0.5726

P(S/A) = 0.357/0.5726 = 0.6235

3 0

3 years ago