2 years ago

I think of a number, double it and my answer is 15

Mathematics

1 answer:

Aliun [14]2 years ago

4 0

Answer:

Use reverse operations to find the original number.

15/2

7.5

The number that was originally thought of was 7.5.

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for a special concert by a popular band, the concert hall owner decided to charge $20 per ticket for the first "r" rows and $15

Alecsey [184]

R = 16 according to the problem, so the total amount of income will be:
$20*16 + $15*(40 - 16)
= $320 + <span>$15*(24)
= </span>$320 + <span>$360
= $680
that is the income, but the expenses are $275 so the total revenue is the subtraction of those two
total revenue = $680 - $275
= $405</span>

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3 years ago

Gabriel has already 200 pages of his 530-page number reading book. If he reads at an a average rate of 55 pages per hour, how lo

Dafna1 [17]

Answer: 55x +200 = 530 x=6

Step-by-step explanation:

55x +200 = 530

-200 -200

-------------------------------------------

55x = 330

divide by 55 on both sides

-------------------------------------------------

x=6

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3 years ago

In an experiment, the initial temperature of a solution is -5 °C. The solution is heated up at 3 °C per minute for 19 minutes an

Free_Kalibri [48]

Answer:

28°C

Step-by-step explanation:

First you do 3*19=57°C

-5+57= 52°C

then you do 4*6=24 °C

as its being cooled you takeaway

52-24=28°C

3 0

2 years ago

25% of 40 emails were spam how many emails were spam

mixer [17]

10. 25% of 40 or 0.25 times 40 gives you 10.

also 25% = 1/4
so 1/4 x 40 = 10

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3 years ago

A deck of cards has all 12 face cards removed. If a card is drawn at random, what are the odds against drawing a card that is a

kap26 [50]

Answer:

the answer is A 3 to 2

Step-by-step explanation:

but if it's wrong I'm sorry but if it's right I'm happy for you

4 0

2 years ago

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