Answer: a, c
step-by-step explanation:
if a < 7 or a is less than 7
a.) a < 17 a is less than 17 so that’s true
b.) -a < -7 i’m not sure on this one but i believe no
c.) 3a + 4 < 25
-4 -4
3a < 21
/3 /3
a < 7 which is true
d.) a^2 < 49 i’m also not sure how to cancel out exponents but i hope the two definite answers help
Answer:
x=3.5
Step-by-step explanation:
subract 5 on the other side, than divide by 2
Step-by-step explanation:
A. 8 cm, 15 cm, 17 cm => This is a right triangle.
B. 20 cm, 21 cm, 29 cm => This is a right triangle.
C. 36 cm, 77 cm, 85 cm => This is a right triangle.
D. 7 cm, 28 cm, 32 cm => This is not a right triangle.