3 years ago

2x + 3y = –19 –2x − y = 1

1 answer:

6 0

The x both cancels out

So you’re left with 2y=-18 (add 3y to negative y and -19 and 1)

Divide by 2 and y equals -9

Plug in y to get x

2x + 3(-9) = -19

2x + -27 = -19

Add 27 to both sides

2x= 8

Divide by 2, x= 4

So x= 4 and y = -9

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Use a measuring tape to find the circumference of five circular objects.Then measure distance across each item to find its diame

MAXImum [283]

Basically
Circumference = 2 * pie * radius
To get the radius u need to measure the circles distance. For example I measured a circular mirror and the distance was 10cm. This is the diameter. To get the radius I’ll divide by 2 because the radius is from the centre of the circle to the edge. So, 10 divided by 2 = 5cm. The radius is 5cm. Now,
Circumference = 2 * pie * r
r = 5. Pie = 3.14
Circumference = 2 * 3.14 * 5
= The answer
****pie is always 3.14
I hope you understood

4 0

3 years ago

87.5% of what number is 49?

kozerog [31]

Answer=56

87.5%*y=49
.875y=49
____ ___
.875 .875
divide both sides by .875
y=56

7 0

3 years ago

I don't know who needs to hear this but I wanted to hopefully reach out to someone.

Alex787 [66]

Answer:

aw thank you sm <3 !!! needed to hear that

Step-by-step explanation: