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professor190 [17]
2 years ago
15

Please answer i will make brainiest

Mathematics
1 answer:
Semenov [28]2 years ago
6 0

Answer:

you have to take away the 30 and put in the 70 from there by the 9

Step-by-step explanation:

use conquest of evaluation

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At the grocery store, you can purchase lemons at 2 for $0.99. you can also buy a bag of 6 lemons for $2.50. Which is the better
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6 lemons is the better buy
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3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20express%20%5C%3A%20%20%5C%3A%20%5Csin%282x%29%20%20-%20%20%5Csqrt%7B3%7D%20%20%5Ccos%282x%2
gizmo_the_mogwai [7]

Answer:

α = π/3

γ = 2

x = -3π/4, -5π/12, π/4, 7π/12

Step-by-step explanation:

Easiest way to do this is in reverse.

γ sin(2x − α)

Angle sum/difference formula:

γ (cos α sin(2x) − sin α cos(2x))

Distribute:

γ cos α sin(2x) − γ sin α cos(2x)

Matching the coefficients:

γ cos α = 1

γ sin α = √3

Solve the system of equations.  Divide to eliminate γ:

tan α = √3

α is between 0 and π/2, so:

α = π/3

γ = 2

sin(2x) − √3 cos(2x) = 1

Using the identity from before:

2 sin(2x − π/3) = 1

Solving:

sin(2x − π/3) = 1/2

2x − π/3 = π/6 + 2kπ or 5π/6 + 2kπ

2x = π/2 + 2kπ or 7π/6 + 2kπ

x = π/4 + kπ or 7π/12 + kπ

x is between -π and π, so:

x = -3π/4, -5π/12, π/4, 7π/12

7 0
3 years ago
A student says that 2 1/4 + 1 2/4 =5. Why is that answer wrong?
saw5 [17]
2 1/4 + 1 2/4 ≠ 5

Why?

2 1/4 + 1 2/4 
=3 3/4

The answer is wrong because the student added wrong. The real answer is 3 3/4.
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Solve for b. 3b+2(b-3)=4
aleksandrvk [35]
The answer is b=2 because yea
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3 years ago
Turn this recurring decimal, 0.545545545, to a fraction in its lowest form.
professor190 [17]
54554/99999. I think I am right but sorry if I am wrong. 
8 0
3 years ago
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