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Advocard [28]
2 years ago
12

Multiplying by which number is equivalent to finding 80%?

Mathematics
1 answer:
liubo4ka [24]2 years ago
5 0

Answer:

80% is equivalent to 80/100 which is the same as 0.8 and we can just take a number, for example 10, and we can multiply it by 0.8 and we would get 8 which is 80% of the original value.

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How should I write an equation for these lines?!?!?
Katen [24]

Answer:

A= x=-4

B= x=4

C= y=4

D= y=-2

Step-by-step explanation:

4 0
3 years ago
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In your notebook, draw ray OB between ray OA and OC. When you have finished, select the figure below that represents the figure
zhuklara [117]

Answer:

I'm fairly certain the answer is A, The first one

explanation:

Ray OB is between rays OA and OC

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IM BEGGING PLEASE SOMEONE HELP
Marina86 [1]
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3 years ago
Find the difference.<br> 9 - (-10)
Salsk061 [2.6K]

Answer:

19

Step-by-step explanation:

9 - (-10) = ?

To do this, we need to use the additive inverse and the method of K(eep)F(lip)C(hange)

So, the problem becomes: 9 + 10 = ?

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8 0
3 years ago
Find a function f such that f '(x) = 5x3 and the line 40x + y = 0 is tangent to the graph of f.
Alex17521 [72]

The function that is a  tangent to the graph of f is f(x) = (5/4)x^4+60

<h3>What is the concept of integral?</h3>

The definite integral can be interpreted as the resulting area of a region. In addition, it is a value in its result, that is, it does not depend on the variable x, which can be exchanged for any other variable without changing the value of the integral.

Knowing that :

  • 40x + y = 0 is tangent of f(x)
  • slope of the line = -40

therefore, f'(x)|x=a = -40, so only look for a we have:

5a^3 = -40\\a^3 = -8\\a = -2

if, x = -2, then y = 80 (since, 40x + y = 0), therefore, f(x) passes through (-2,80), so in the equation:

f'(x) = 5x^3\\f(x) = (5/4)x^4 + c\\80 = (5/4)(-2)^4 + c\\c = 60

Therefore,

f(x) = (5/4)x^4+60

See more about tangent at brainly.com/question/401236

#SPJ1

4 0
2 years ago
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