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shepuryov [24]
3 years ago
7

[PLEASE HELP ]AYO someone help me it’s solve Y now

Mathematics
2 answers:
padilas [110]3 years ago
8 0

First you need to find X you do

33 + 87 = 120

180 - 120  = 60

X = 60°

Because a line equals 180° you need to subtract 60 from 180 to get your answer.

180 - 60 = 120

Y = 120°

Hope this helps!

erik [133]3 years ago
5 0

Answer:

The answer to the question provided is 120.

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Limit of x^2-81/x+9<br> As x goes toward -9
Semmy [17]
Hello,

Use the factoration

a^2 - b^2 = (a - b)(a + b)

Then,

x^2 - 81 = x^2 - 9^2

x^2 - 9^2 = ( x - 9).(x + 9)

Then,

Lim (x^2- 81) /(x+9)

= Lim (x -9)(x+9)/(x+9)

Simplity x + 9

Lim (x -9)

Now replace x = -9

Lim ( -9 -9)

Lim -18 = -18
_______________

The second method without using factorization would be to calculate the limit by the hospital rule.

Lim f(x)/g(x) = lim f(x)'/g(x)'

Where,

f(x)' and g(x)' are the derivates.

Let f(x) = x^2 -81

f(x)' = 2x + 0
f(x)' = 2x

Let g(x) = x +9

g(x)' = 1 + 0
g(x)' = 1

Then the Lim stay:

Lim (x^2 -81)/(x+9) = Lim 2x /1

Now replace x = -9

Lim 2×-9 = Lim -18

= -18




7 0
3 years ago
Solve the equation by taking the square root 4(x+1)^2=100
Naddika [18.5K]

Answer:

Step-by-step explanation:

4(x+1)²=100

(x+1)²= 5²

(x+1)²- 5² = 0

(x+1-5)(x+1+5) = 0  by identity : a² - b ² = (a - b) (a+b)

(x - 4 ) (x+6) =0

x - 4 = 0 or x+6 = 0

x = 4  or x = - 6

3 0
3 years ago
the value of a company's stock changes by -$2.25 each day. After how many days will the value of the stock change by -$18?
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5 0
4 years ago
An airplane over the Pacific Ocean sights an atoll at an 7° angle of depression. If the plane is 663 m above the water, how many
Illusion [34]
You need to <span>draw the diagram to understand the problem easily. Teh diagram will show the right triangle, acute angle with the base  7º, height is 663 m, and "x" is the base of the triangle. 

using the tangent ratio: 

tan</span>Θ = opposite / adjacent
<span>
tan7º = 663 m / x 

x = 663 m / tan7º
x = 5,399.7 m 

change m to km. 1,000 m = 1km

5,399.7m * 1km/1,000 m = 5,399.7 km/1000 = 5.3997 km or 5.4 km

B. 5.4 km </span>
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Solve for x in the equation x squared + 4 x minus 4 = 8.
densk [106]

9squared=3(x)

81=3x

x=27

3 0
3 years ago
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