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scoundrel [369]
3 years ago
7

A teacher asks a student to find 54 of a number. Instead, the student finds 45 of the number. Her answer is 36 less than the cor

rect answer. What is the correct answer?
Mathematics
1 answer:
Marrrta [24]3 years ago
5 0
45 of a number refers to 180, and 54 refers to 216. So 100 of a number is 400 and 1 of a number is 4. If 54x - 45x = 36, just plug in 4 and double check: 54(4) - 45(4) = 36 or 216 - 180 = 36, which is true.
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Please help me with this :)
docker41 [41]

Answer: 103 degrees

Step-by-step explanation: all angle of a regular triangle always add up to 180. so 62+15=77. and 180 - 77= 103

7 0
2 years ago
Read 2 more answers
Diane is 23 years older than her daughter Amy and 6 years Diane will be twice as old as Amy how old are they now
Dmitry_Shevchenko [17]
The age difference between Diane and Amy remains the same. 6 year later, the age difference is still 23 years old.

6 years later,
Amy is 23 years old
Diane is 46 years old

Now,
Amy, 17 years old
Diane, 40 years old.
6 0
3 years ago
Find the LCD for the following pair of fractions.<br> 1/5<br> and<br> 1/2
Katarina [22]
The LCD would the 10 since that is the lowest multiple that they both have in common.
7 0
3 years ago
4. Tyson and his friends go ice skating. Tyson must pay an initial fee of $18.30 plus $4.80 per hour.
hjlf

Answer:

equation: c = 4.80h + 18.30, cost for four hours: (4, 37.5)

Step-by-step explanation:

the equation is c = 4.80h + 18.30 because 18.30, the initial cost, is the y-intercept and because each hour costs $4.80. the cost for four hours would be (4, 37.5) because it costs $37.5 to skate for four hours.

7 0
2 years ago
Help me please can you model this for me I need SERIOUS HELP ASAP? And correct my answer PLEASE and thank you!
Maksim231197 [3]

What do I need to find?

Your answer is correct.

What information do I need to use?

100% = 240 miles, she has already driven 15% of 240, so she has driven x miles.

How will I use the information?

Set up a proportion. If she has already driven 15% out of 100% of the distance, then you should write \frac{15}{100} for the first fraction. This is proportional to \frac{x(miles)}{240(miles)}. This means that \frac{15}{100} = \frac{x}{240}. Wait, but this is confusing. How on Earth do we solve it? Let's take a closer look. If \frac{x}{240} is supposed to equal 15/100, then this means that x/240 divided by 15/100 should give us the answer. So, even though it looks complicated, all you have to do is cross multiply like this:

\frac{15}{100} = \frac{x}{240} --> 240 * 15 = 100x --> 3600 = 100x

Now isolate x:

\frac{3600}{100} = \frac{100x}{100}

So x = 36, which means she has already driven 36 out of 240 miles. Lucia still has to drive 204 miles to reach her destination.

1.) In this case, 56 = 100% and 25% of the sandwiches were tuna. This means that 75% of the sandwiches were not. If \frac{25}{100} = \frac{x}{56} and you use the same method above, x is equal to 14. If 14 is 25% then that means the other 75% = 14 * 3. So 42 sandwiches were not tuna.

2.) \frac{60}{100} = \frac{x}{450}

--> 27000 = 100x

---> \frac{27000}{100} = \frac{100x}{100}

He still has $270 left to pay.

6 0
3 years ago
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