Well for 3. you use the Pythagorean theorem to say that 28^2 - 18^2= x^2 so 21.4 and for 4. the Pythagorean theorem says a^2 + b^2 = c^2 with c being the hypotenuse of any right triangle so the sums of the two smaller squares make the sum of the larger square making the answer b
Answer:
it already is a decimal????
Answer:
i just need points!!!!!
Step-by-step explanation:
Answer: 0.3 + 0.15 =0.45 use that for all of them
Step-by-step explanation:
Okay so I wont be able to show the row here but I will try my best.
7(5x-4y=28) = 35x-28y=196
-5(7x+5y=18) = -35x-25y=-90
= -53y=106
= y=-2
5x-4(-2) =28
5x+8=28
5x=20
x=4