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3 years ago

C represents a number, which of the following statements uses the multiplicative identity?

Mathematics

1 answer:

wariber [46]3 years ago

3 0

Answer:

C·1 = C

Step-by-step explanation:

Identity means an operation that doesn't change your input. Muliplying by 1 doesn't change your input.

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A cell phone plan charges $15$15 per month for 300300 text messages. The plan charges $0.08$0.08 for each additional text messag

Reika [66]

The company charges 15 dollars per month for first 300 text messages and thereafter 0.08 dollars for any additional text message.

It says that we used additional 60 text messages (after fair usage of first 300 messages in the plan).

Our bill for this month would be sum of charges for 300 messages and charges for additional 60 messages.

Total bill = 15 dollars + 60x0.08 dollars = (15 + 4.80) dollars.

Total bill = 19.80 dollars.

Hence, our bill this month would be 19.80 dollars.

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3 years ago

White and black shapes are used in a game Some of the shapes are circles All the other shapes are squares The ratio of white to

nydimaria [60]

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3 years ago

Read 2 more answers

When servicing a heating boiler and radiators, a plumer knows that the time he will take is given by the formula

Allushta [10]

Answer:

£110

Step-by-step explanation:

We know how much time it takes for a boiler and a radiator, and we need to know how much it will cost for 1 boiler and 4 radiators. We have an initial cost of £30, and since hes doing a boiler - which we know takes an hour - we can already add £20 for a start of £50.

Now, there are 4 radiators, that take 45 minutes each. We need to use this equation:

$(45*4)/60$

We divide by 60 because there are 60 minutes in an hour, and he charges by hour. So:

$180/60=3$

Now, to find out how much to charge, we need to figure out how much to add to the £50. Since it's £20 an hour, and it takes 3 hours to do the 4 radiators, we need to multiply:

$3*20=60$

Now we add our totals for a grand total of...

$50+60=110$

6 0

3 years ago

Can the polynomial equation have exactly 1 real solution, including any repeated solutions? (Use the Fundamental Theorem of Alge

Kryger [21]

yes, there are infinitety many polynomial that have exactly one real root just like your example, to determine the real root first let the real root is a, and the complex roots are b±ic the polynomial satisfy

-9x³ + 19x² + 17 = -(x - a)(x - b - ic)(x - b + ic)

9x³ - 19x² - 17 = (x - a)(x - b - ic)(x - b + ic)

5 0

3 years ago

A cereal box is 8 inches by 2 inches by 12 inches. Its surface area is<br> square inches.

motikmotik

Answer:

272

Step-by-step explanation:

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3 years ago