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skelet666 [1.2K]
3 years ago
11

Solve.

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
3 0

Answer:

what are you asking?

Step-by-step explanation:

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The slope is?<br> (-5,5) (2,4)
photoshop1234 [79]

Answer:

-1/7

Step-by-step explanation:

(y2-y1)/(x2-x1)

4-5 / 2- -5

-1/7

3 0
3 years ago
Find dy/dx if. y = inverse of cos x​
nataly862011 [7]

Answer:

dy/dx = -1 /√(1 - x^2).

Step-by-step explanation:

y = arccos x.

So x  = cos y

dx / dy = - sin y

dy / dx = -1 / sin y

But sin y = √( 1 - cos^2 y)

But cos y = x , so cos^2y = x^2

Therefore  

dy/dx = -1 / √(1 - x^2).

8 0
4 years ago
If (a + b) = 73 and a b =65 find value of a²+ b²​
xxMikexx [17]

Step-by-step explanation:

Here,

by formula a^2+b^2=(a+b)^2-2ab

so,

or,(a+b)^2-2ab

or,(73)^2-2×65

or,5329-126

=5203 is the answer

6 0
3 years ago
Need help with number 2 plzzz
solong [7]
C


explaination: simple
8 0
3 years ago
If a train travels at 80 mph for 30 min, what is the distance traveled?
ozzi

Answer:

The train travels 40 m

Step-by-step explanation:

* Lets explain how to solve the problem

- The distance = speed × time

- The train travels 80 mph for 30 minutes

∵ The train travels at speed 80 mph

∵ The train travels for 30 minutes

- We must change the minutes to hours

- There are 60 minutes in an hour

∵ 1 hour = 60 minutes

∴ 1 minute = 1/60 hour

∵ The train traveled for 30 minutes

∴ The train traveled for = 30 × 1/60 = 1/2 hour

∵ Distance = speed × time

∵ The speed = 80 mph

∵ The time = 1/2 h

∴ The distance = 80 × 1/2 = 40 m

* The train travels 40 m

5 0
3 years ago
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