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3 years ago

What is the solution to the equation? √-2r - √5 - 4 = r

Mathematics

1 answer:

cluponka [151]3 years ago

5 0

The answer is,

$r = - 2 + \sqrt{3}$

hope this helps.

sorry if wrong.

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Help i put 25 points idk how much you will get but please answer asap!!!!!!!

valentinak56 [21]

Answer:

65 in²

Step-by-step explanation:

1. Break up the figure (We'll do it left to right): We now have 3 rectangles:

(6 - 4) x 4, (4 + 8) x 4, and 3 x 3

2. Find the two lengths: 6 - 4 = 2, 4 + 8 = 12

3. Find the three areas: 2 * 4 = 8, 12 * 4 = 48, 3 * 3 = 9

4. Add the areas: 8 + 48 + 9 = 65 in²

8 0

4 years ago

Solve the system: y/2-x/3=8 and x/6+y/12=0 PLEASE NO LINKS!!!!

laiz [17]

Answer:

First: 2x-3y+-48

Second:2x+y+0

Step-by-step explanation:

I think their correct but hopefully they helped!

8 0

3 years ago

You paint 1/2 wall in 1/4 hour. At that rate, how long will it take you to paint one wall?

Mnenie [13.5K]

(1/2) / (1/4) = 1 / x......1/2 wall to 1/4 hr = 1 whole wall to x hrs
cross multiply
(1/2)(x) = (1/4)(1)
1/2x = 1/4
x = 1/4 * 2
x = 2/4 reduces to 1/2....so it will take 1/2 hr (or 30 minutes) to paint the whole wall.

6 0

4 years ago

Read 2 more answers

A circle with a centre 0, has an equation x2 + y2 = 25

GaryK [48]

The linear equation of the tangent at point A is given by:

$y = \frac{-4x + 25}{3}$

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.

b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

In this problem, to find the slope, we need to find the derivative at (4,3), using implicit differentiation. Hence:

$2x\frac{dx}{dx} + 2y\frac{dy}{dx} = 0$

$\frac{dy}{dx} = -\frac{x}{y}$

$\frac{dy}{dx} = -\frac{4}{3}$

Then:

$y = -\frac{4}{3}x + b$

We use point (4,3) to find b, hence:

$y = -\frac{4}{3}x + b$

$3 = -\frac{16}{3} + b$

$b = \frac{25}{3}$

Hence, the equation is:

$y = \frac{-4x + 25}{3}$

More can be learned about linear equations at brainly.com/question/24808124

#SPJ1

7 0

2 years ago

How do i solve this?

Trava [24]

Answer:

Step-by-step explanation:

so first you take the 2 to the 1/4 power and put it in a radical expression so now it is the fourth root of 2 $\sqrt{2}$ but with a little four just like the expression at the end now you still have the 3 power left but $2^{3}$ is 8

8 0

4 years ago