Answer:
23
Step-by-step explanation:
7^2=a^2+4^2
49-16=a^2
√23=a
-10
-1, -2
Since multiplication by 0 will result in 0, any value of x resulting in 0
(-1+1)(-1+2)=0
0x1=0
(-2+1)(-2+2)=0
-1x0=0
4.19
Find the mean:
Find the standard deviation:
Her score after the two competitions was 500
hope this answer helps you
