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3 years ago

Please, help me with my homework?

Mathematics

2 answers:

ivann1987 [24]3 years ago

5 0

Answer:

yea what do you need help with?

Step-by-step explanation:

lys-0071 [83]3 years ago

4 0

Answer:

I'd be happy to help.

Step-by-step explanation:

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Sandra wants to buy a new mp3 player that is on sale for $95 she has saved $73 how much more money does she need

Schach [20]

Answer:

For Sandra to save up and purchase the mp3 she must save additional $22.

Step-by-step explanation:

This problem requires us to understand the concerns of deficit/balance

Step one

We were told that mp3 cost $95

And Sandra has saved $73

Hence for her to purchase the mp3 she has to save up to $95 which is the benchmark price for the item

Step two :

Hence the amount of money to balance up is

=Cost of mp3- Sandra's savings

= $95-$73

=$22

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3 years ago

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Is the order pair 1,2 2,4 3,8 4,16 a function if yes then why

Vikentia [17]

No it is not a order pair. It’s not one because I did the work.

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3 years ago

Two trains started moving at the same time, train A from Boston to New York, and train B from New York to Boston. The distance b

Ede4ka [16]

Answer:

After 1.7 hours

Explanation:

1. Calculate the average speed of train B

60mph = 3/4 (s) ⇒ s = 60 (4/3) mph = 80 mph

2. Build a table

When the two trains meet:

Train Average speed Distance time (distance/average speed)

mph

A 60 x x/60

B 80 240 - x (240 - x) / 80

3. Write the equation

The time, when the two trains meet, is the same for both trains:

$\dfrac{x}{60}=\dfrac{240-x}{80}\\ \\ \\ 80x=14,400-60x\\ \\ 80x+60x=14,400\\ \\ 140x=14,400\\ \\ x=14,400/140\\ \\ x=102.85miles$

4. Calculate the time:

x/60 = 102.86 / 60 = 1.7 hours

The two trains will meet after 1.7 hours

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3 years ago

Please solve these questions on the topic of exponents

galina1969 [7]

Answer/Step-by-step explanation:

Recall: $x^{-a} = \frac{1}{x^a}$

a. $4^{-3} = \frac{1}{4^3} = \frac{1}{64}$

b. $13^{-2} = \frac{1}{13^2} = \frac{1}{169}$

c. $(-3)^{-2} = \frac{1}{-3^2} = \frac{1}{9}$

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3 years ago

The man buys flags 4 his store. each flag cost $28. how many flags can he buy for $350? What does the remainder represent? help

kodGreya [7K]

He can buy 12 flags, the remainder represents his left over money

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4 years ago

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