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almond37 [142]
3 years ago
11

If f(x) = -9x – 7, then f-'(x) = Enter the correct answer.

Mathematics
1 answer:
Debora [2.8K]3 years ago
6 0
The derivative would be f'(x)= -9
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if the cost price of 10 tables is equal to the selling price of 16 tables , find out the gain or loss percentage​
Dovator [93]

Hi,

To solve this problem, Let us take the LCM of 10 and 16 which will come 80.

Now suppose the cost price of 10 tables =₹n CP of 80 tables will be ₹ 8n

According to the question, CP of 10 tables is equal to the SP of 16 tables, then

the SP of 16 tables will also be ₹ n.

So, SP of 80 tables will be ₹ 5n

So, Loss = CP-SP

→ 8n - 5n = ₹ 3n

Loss%= (3n×100)/8n

Loss%= 37.5%.

Hence the correct answer will be a <u>loss of 37.5%.</u>

4 0
3 years ago
What is 3/25*2/13 ? <br><br>A 5 2/15 <br><br>B 6 2/15 <br><br>C 7 14/15 <br><br>D 8 1/15
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vesna_86 [32]

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3 years ago
PLEASE HELP ME WITH GEO TEST!
pantera1 [17]

Answer:

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Step-by-step explanation:

7 0
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18. Two planes left an airport at the same time. One flew north at a set speed and the other
Andre45 [30]

Answer: plane A = 333.33mph

Plane B = 500mph

Step-by-step explanation:

Given data:

Distance between the two planes = 2400miles.

Plane A flew North

Plane B flew south

Solution:

Let v represent plane A.

Let 2v represent plane B.

Distance between the two plane

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7.5v = 2500miles

v = 333.33mph

Plane B has one and half times the speed of plane A

= 1.5 * 333.33

= 500mph

4 0
3 years ago
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