3 years ago

NEED HELP NOW!! Will give 20 extra PTS to the best answer

1 answer:

4 0

To find the value of y, you need to plug a value into the x variable, in this case -8.

4x + 9y = -14 Substitute -8 for x
4 (-8) + 9y = -14 Multiply
-32 + 9y = -14 Start isolating the variable by adding 32 to both sides
9y = 18 Divide both sides by 9
y = 2

When x = -8, y = 2

You might be interested in

Solve the inequality. Graph the solution on a number line. 7x+2>3(x-4)

Oksana_A [137]

7x+2>3(x-4)
or, 7/4x+1/2>x-4
or,x-4<7/4+1/2
or,x=7/4+1/4+4
x=6

5 0

3 years ago

Determine whether angles with measures 47 ° and 53 ° are complementary. Explain why or why not.

Stells [14]

Answer: No

Step-by-step explanation: Complementary angles are those that add up to 90 degrees, 47 + 53 equals to 100.

6 0

3 years ago

If cos0 =1/3 then sin0=?

Sidana [21]

Answer:

sin θ = +/- (2√2)/3

Step-by-step explanation:

cos θ = 1/3

cos²θ + sin²θ = 1

(1/3)² + sin²θ = 1

sin²θ = 1 - 1/9

√(sin²θ) = +/-√(8/9)

sin θ = +/- (2√2)/3

6 0

4 years ago

A lamina with constant density rho(x, y) = rho occupies the given region. Find the moments of inertia Ix and Iy and the radii of

jenyasd209 [6]

Answer:

Ix = Iy = $\frac{ρπR^{4} }{16}$

Radius of gyration x = y = $\frac{R}{4}$

Step-by-step explanation:

Given: A lamina with constant density ρ(x, y) = ρ occupies the given region x2 + y2 ≤ a2 in the first quadrant.

Mass of disk = ρπR2

Moment of inertia about its perpendicular axis is $\frac{MR^{2} }{2}$ . Moment of inertia of quarter disk about its perpendicular is $\frac{MR^{2} }{8}$ .