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Harrizon [31]
3 years ago
13

I need help on these 3

Mathematics
1 answer:
uysha [10]3 years ago
3 0
What do you need help with? it helps us to know the question!
You might be interested in
Rewrite the expression as an algebraic expression in x. <br> cos(tan−1 x)
zhenek [66]
It's hard to type and hard to read the "inverse tangent" function, as you've seen (above).

So, use "arctan x" instead.

Then the problem becomes:  "differentiate cos (arctan x)."

You must apply first the rule for differentiating the cosine function, and next apply the rule for differentiating the arctan function:

(d/dx) cos (arctan x) = - sin (arctan x) * [1/(1+x^2)]

7 0
3 years ago
Isaiah And Cooper work at a dry cleaner Ironing shirts.isaiah can iron 25 shirts per hour, and Cooper can iron 30 shirts per hou
neonofarm [45]

Answer:

Step-by-step explanation:

340/25 = 13.6 = 13 hours and 10 min

30 x 13.6 = 408 hours

25x+30y= 340 and y=2x can be used to determine the number of hours cooper worked and the number of hours isaiah worked. Where x Isaiah 's working hours and y is cooper's working hours.

Step-by-step explanation:

Isaiah ironing rate per hour = 25 shirts

Cooper ironing rate per hour = 30 shirts

Total shirts pressed = 340

Let,

Isaiah´s number of hours = x

Cooper's number of hours = y

According to given statement;

25x+30y=340   Eqn 1

Hudson worked twice many hours as grace.

y = 2x    Eqn 2

Keywords: linear equations, variables

Learn more about variables at:

brainly.com/question/4837736

brainly.com/question/4805611

#LearnwithBrainly

8 0
3 years ago
Read 2 more answers
Which statement is true of this function?
Eduardwww [97]

Answer:

  A.  As the value of x increases, the value of f(x) moves toward a constant

Step-by-step explanation:

An exponential function with a base less than 1 will decay to zero. Here, the exponential has -2 added to it, so the decay is toward the value -2.

An exponential function is defined for all real numbers. This one has a y-intercept of -1.

6 0
3 years ago
Please answer quickly,thanks you shall be marked a branliest<br>​
Leviafan [203]

Answer:

18.0  cm to 1 decimal point.

Step-by-step explanation:

First  work out the unknown side (s) of the right triangle using the Pythagoras theorem:

s^2  = 13^2 - 5^2

       = 169 - 25 = 144

s = sqrt 144 = 12 cm.

Now consider the other triangle:

s = 12

The missing angle = 180 - 65 - 40 = 75 degrees.

By the Sine Rule:

x / sin 75 = 12 / sin40

x = 12 sin 75 / sin 40

  = 18.03

    -

3 0
1 year ago
How to change a bianary number into decimal number​
adelina 88 [10]

1. Positional Notation

2. Doubiling

3. An Online Converter

6 0
3 years ago
Read 2 more answers
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