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sesenic [268]
3 years ago
8

1. Find the derivative of f(x), at x = 10 f(x) = - 5x² + 13x

Mathematics
1 answer:
Serhud [2]3 years ago
6 0

Answer:

-10x+13

Step-by-step explanation:

Im not 100% sure but i tried!

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Neporo4naja [7]

Answer is in screenshot. Can I now have Brainliest?

6 0
3 years ago
Please help I’ve been stuck on it forever. :(
slava [35]

Answer:

$31.37 is the sale price

Step-by-step explanation:

All you need to do to find the discount price (sale price) is multiply the price of the item by the decimal form of the percentage.

1. Store A. 40% off the original price of $159.99

(159.99 * .40) = 63.996

63.996 is the discount price we are looking for

2. Store B. 25% off the original price of $130.50

(130.50 * .25) = 32.625

32.625 is the discount price we are looking for

3. Now to find their difference you just subtract the two values.

($63.996 - $32.625) = $31.371

The discount price (sale price) is $31.371

6 0
3 years ago
The speed of the current is 7 mph. The boat travels three times slower against the current than with the current. What is the sp
kotykmax [81]
Let the speed of the boat be x
so going against the current the speed is x-7
going with the current the speed is x+7

let the distance be d
time = distance / speed
time to go against the current = d/(x-7)
time to go with the current = d/(x+7)

time going against the current is 3 times going <span>with the current
</span>
d/(x-7) = 3d/(x+7)     ⇒⇒⇒ divide by d 
1/(x-7) = 3/(x+7) 
x+7 = 3(x-7) 
x+7 = 3x - 21
2x = 28
x = 14

So, the speed of the boat in still water is = 14 mph
3 0
3 years ago
Which ordered pair does not represent
CaHeK987 [17]

Answer:

b

Step-by-step explanation:

you can use trial and error to solve this btw that's what I used and once I got to answer choice b, i plugged in the 2 numbers into the equation based of of their axis once i did that the equation now looked like this 9=3+3, when you solve this the equation would then look like this 9=6 and we both know that 9 doesn't not equal 6 so that is your answer.

7 0
3 years ago
If seven people meet each other and each shake hands only once with each of the others, how many handshakes happened?
Andreas93 [3]

Answer:

alright so every person shook 7 people's hands so 7x and there are 7 people so 7(7) and that is 49

4 0
2 years ago
Read 2 more answers
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