A company selling cell phones has a total inventory of 900 phones. Of these phones, 450 are smartphones and 270 are black. If 225 phones are not black and not a smartphone, how many of the phones are black smartphones

45 of the phones are black smartphones.

Step-by-step explanation:

We sould this question treating these probabilities as Venn events.

I am going to say that:

Event A: Smartphone.

Event B: Black.

450 are smartphones and 270 are black.

This means that .

225 phones are not black and not a smartphone

This means 900 - 225 = 675 are either black or a smartphone, that is,

How many of the phones are black smartphones?

This is:

Considering the values we found:

45 of the phones are black smartphones.

answer: 0.95, d

step-by-step explanation:

first, you have to combine the percentages of costumers ordering pizza or salad. 25% (percent of salads ordered) plus 70% (percent of pizzas ordered) is equal to 95%. then, turn 95% into a fraction: 95/100. lastly, divide 95 by 100 and you will get 0.95, d.

it has changed from the width and the height.

step-by-step explanation: