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4 years ago

Evauate 15 divide by r minus 1 when r = 5

Mathematics

2 answers:

kiruha [24]4 years ago

8 0

The Answer is 2 because 15 divided by r (5) is 3 and 3 minus 1 is 2

Alik [6]4 years ago

4 0

15 divided by 5 equals 3

3 minus 1 equals 2

so your answer would be 2 :)

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What is 3/10 of 14,00

Paraphin [41]

420

I’ll say that you should use your calculator

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3 years ago

10 - 20 - 20 - 20 -20 2- + 1000

kari74 [83]

Answer:

928

Step-by-step explanation:

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3 years ago

2 times what equals 36

yarga [219]

2 times 18 equals 36... Did I do a good job answering your question?? If so, brainliest, please. :)

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4 years ago

A balloon is hovering 800 ft above a lake. The balloon is observed by the crew of a boat as they look upwards at an angle of 20

stich3 [128]

Answer:

Step-by-step explanation:

given that a balloon is hovering 800 ft above a lake. The balloon is observed by the crew of a boat as they look upwards at an angle of 20 degrees. Twenty-five seconds later, the crew has to look at an angle of 65 degrees to see the balloon

The distance of the boat from the balloon measured horizontally in the I position = 800 tan 20

After 25 seconds distance of the boat from the balloon measured horizontally in the II position

= 800 tan 65

Distance moved by the boat in 25 seconds

= $800(tan 65-tan 20)\\= 1342.56$

Speed of the boat per second = $\frac{1342.56}{25} \\=53.702$

53.702 feet per second is the speed of boat

5 0

3 years ago

I really need help on both but if you can only answer one that's perfectly fine!

Fofino [41]

Answer:

110, 15%

Step-by-step explanation:

So for the first problem, recall that there is 100%. 12% of the answers on a test were missed.

There are 125 questions on the test.

To find the answer, what we can do it multiply 125 by 100%-12%

So 125*88%

THis can be looked at as:

125*.88

110

So we know the first answer is 110, now lets move onto the next one.

There a few ways of diong this, we could do 100%- each of the answers, and then multiply that by 2760 and see if we get 2400, but there is an easier way of doign this.

Take your 2760, and divide it by 2400. This will get you 1.15. So 2400 is increases by .15. This is equal to an increase of 15%.

There is a catch to this one however, when you divide 2400 by 2760, which should get you 85%, it gets you 86%. This would be 14%. So the answer seems to be 15%, but if not, its none of the above.

So answers:

110 and 15%(or none of the above)

Hope this helps! I am sorry about the bottom answer though, but 15% makes the most sense to me.

7 0

3 years ago

Read 2 more answers