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Vika [28.1K]
3 years ago
12

Plzz helpppp meee.... i need the answer and steps really fast ...​

Mathematics
1 answer:
blsea [12.9K]3 years ago
4 0

Answer:

R = √2

α = π/4 or 45°

Step-by-step explanation:

R cos(2n + α)

Use angle sum formula:

R [cos(2n) cos α − sin(2n) sin α]

R cos(2n) cos α − R sin(2n) sin α

Match the coefficients:

R cos α = 1

R sin α = 1

Divide:

tan α = 1

α = π/4 or 45°

Solve for R:

R cos(π/4) = 1

R / √2 = 1

R = √2

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I need help fast!!!!!!!!!!!!!
storchak [24]

Answer:

The answer is 140

Step-by-step explanation:

When the total measurements of the six-shaped corners is equal 720

Then x equal to

x = 720 - (120 + 120 + 120 + 130 + 90) = 140

If you need any explanation in it or anything on math you can communicate with me on Whats on this number +201557831028 or in email or face or anything

4 0
2 years ago
Will give brainliest to correct answer please help
tangare [24]

Answer:

Its B

Step-by-step explanation:

I did the test on edge

6 0
3 years ago
Which ordered pairs are solutions to the inequality y - 3x < -8?
7nadin3 [17]

Answer:

Option B,C and E are solution to given inequality y - 3x < -8

Step-by-step explanation:

We need to check which ordered pairs from given options satisfy the inequality y - 3x < -8

Ordered pairs are solutions to inequality if they satisfy the inequality

Checking each options by pitting values of x and y in given inequality

A ) (1, -5)

-5-3(1)

So, this ordered pair is not the solution of inequality as it doesn't satisfy the inequality.

B) (-3, - 2)

-2-3(-3) < -8\\-2-9

So, this ordered pair is solution of inequality as it satisfies the inequality.

C) (0, -9)

-9-3(0)

So, this ordered pair is solution of inequality as it satisfies the inequality.

D) (2, -1)

-1-3(2)

So, this ordered pair is not the solution of inequality as it doesn't satisfy the inequality.

E) (5, 4)​​​

4-3(5)

So, this ordered pair is solution of inequality as it satisfies the inequality.

So, Option B,C and E are solution to given inequality y - 3x < -8

6 0
2 years ago
The product of a number and 9 less than the number is 90. Find the number.
Goryan [66]

Let's say this number is a:
a*(a-9) = 90
a^2-9a-90 = 0
(a-15)(a+6) = 0
a = 15 or a = -6
Therefor a. would be the correct answer :)
7 0
3 years ago
Can someone please help with either? will mark brainliest
mylen [45]

Answer:

a

Step-by-step explanation:

i just did it

4 0
2 years ago
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