All categories

3 years ago

How do you solve this equation 2x+5y=11 -3x+8y=-1

Mathematics

1 answer:

Brums [2.3K]3 years ago

4 0

5y=3x...............

You might be interested in

A circle with radius 3 has a sector with a central angle of 1/9 pi radians

marissa [1.9K]

Complete question:

A circle with radius 3 has a sector with a central angle of 1/9 pi radians

what is the area of the sector?

Answer:

The area of the sector = $\frac{\pi}{2}$ square units

Step-by-step explanation:

To find the area of the sector of a circle, let's use the formula:

$A = \frac{1}{2} r^2 \theta$

Where, A = area

r = radius = 3

$\theta = \frac{1}{9}\pi$

Substituting values in the formula, we have:

$A = \frac{1}{2}*3^2* \frac{1}{9}\pi$

$A = \frac{1}{2}*9* \frac{1}{9}\pi$

$A = 4.5 * \frac{1}{9}\pi$

$A = \frac{\pi}{2}$

The area of the sector = $\frac{\pi}{2}$ square units

8 0

4 years ago

I need help please!☺️

ehidna [41]

The answer is 10 hope it helps SORRY IF I’M WRONG

4 0

3 years ago

If x-y = 40 and x+y = 70, then what is the value of x squared -y squared ?

OlgaM077 [116]

Let's see what to do buddy...

____________________________

Reminder:

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

So we need to just Multiply above equations like this :

$x + y = 70$

$x - y = 40$

$(x + y)(x - y) = 70 \times 40$

${x}^{2} - {y}^{2} = 2800$

____________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

7 0

4 years ago

I need help now please

LekaFEV [45]

Answer:

Step-by-step explanation:

A = ½(b1 + b2)h

A = (3 + 5)(3)/2

A = 12

8 0

3 years ago

Read 2 more answers

HELLPPPPPPPP A Blue Ray Player costs $150 and each disc costs $15.50.

Sliva [168]

Answer:

150 + 15.50 x 0.075

Step-by-step explanation:

4 0

3 years ago