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Step2247 [10]
3 years ago
12

What are the solutions to cos 2x = - 1​

Mathematics
1 answer:
N76 [4]3 years ago
4 0

Answer:

X can be - 1/2 or 0.5

2x0.5=-1

Step-by-step explanation:

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3 years ago
What is the equation for -5x+6y=12 y=5/6x+2
egoroff_w [7]
<h2>(x, y) = (x, 2 + 5/6 x)</h2>

Step-by-step explanation:

-5x + 6y = 12

y = 5/6x + 2

<h2>_______________</h2>

-5x + 6y = 12

-5x + 6(5/6x + 2) = 12

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x real numbers

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3 years ago
1. Shenice bought 3 equally priced books and
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3x + y = t

Step-by-step explanation:

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4 years ago
Daria earns $17.50 per customer when she gives haircuts if she gave X haircuts on Monday and Y haircuts on Tuesday which express
fomenos

Answer:

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7 0
3 years ago
Help plweaseeeee thanks ​
Sedaia [141]

Answer:

first triangle (to left) b=8, second one c=17

Step-by-step explanation:

for the first triangle (one to the left) the hypotenuse is 9, so let's use the pythagorean formula.

A^2   +  B^2  = C^2

^              ^          ^

^              ^         Hypotenuse

^        second side

first side

Substitute:

5^2 + b^2 = 9^2

SImplify:

25+b^2 = 81

Reduce:

b^2 = 64

Simplify:

b=8

In the second triangle, we are given 2 sides.

Let's do the same thing we did in the first one.

Givens:

A = 8

B = 15

Find:

C

Substitute:

8^2 + 15^2 = c^2

Simplify

64 + 225 = c^2

Reduce:

289 = c^2

Let's now square root both sides

square root of 289 is 17

so we are left with this:

c=17

Phew, you did it!

Hope this helped :))

4 0
3 years ago
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