8th grade math

PEMDAS

100

8+6-3x2

8

200

9+3+4-4x2

8

300

(9x5)+30+9x2

93

400

what does p.e.m.d.a.s stand for

parentheses, exponent, multiplication, division, addition, and subtraction

500

-9+8x4(9-3)x2²

187

volume and area of shapes

100

cube s=5m

v=125m³

200

triangle b=5m x h=10m

A=25²

300

area circle r=7m

A=153.9m²

400

volume of a cone h=4m r=5m

v=104.7m³

500

volume of a sphere r=9

v=3052.1m³

slope

100

what is slope intercept form?

y=mx+b

200

what is the slope y=7x+3

m=7

300

what is the y intercept 1/2x-10

b=-10

400

find the slope (2,5) (4,15)

m=5

500

find the y intercept (-4,3) (0,-2)

b=-2

single step equations

100

x+5=10 what's x?

x=5

200

x-6=-4 what's x?

x=-2

300

3x=18 what's x?

x=6

400

x/4=-2 what's x?

x=-2

500

3x/2=30 what's x?

x=20

missing triangle angels

100

angle 1 =60 

angle 2= 60

find angle 3

angle 3 = 60

200

angle 1=50 

angle 2=50 

what's angle 3

angle 3=80

300

angle 1=15 angle 2=45 angle3=110

is this a triangle

no

400

angle 1=90

angle 2=90

is this a triangle

no a triangle needs three angles

500

angle 1=37 angle 2=53

is this a right triangle

yes x=90