Peggy was taking a timed 30-question test. She was able to correctly answer 90% of the questions but had to skip the rest. How many questions did Peggy answer correctly?

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13

a 360 degree rotation

step-by-step explanation:

i think the answer is b

y∈r, 8> y≥0

hope i !

p.s the first bit only matters if you know what that means.

p.p.s brainliest would really