Answer: A,C i am sorry about that old answer but hope this helped
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Step-by-step explanation:
Step-by-step explanation:
a+b+c=78
b=10+a
c=2b
then, we back the first
a+10+a+2b=78
2a+2b=78- 10
2a+2(10+a)=68
2a+2a=48
4a=48
a=12
b=22
c=44
Answer:
B
Step-by-step explanation:
the question says -12x ≤ -72.the sign ≤ means less than or equal to. so we will divide both sides by -12 to get the value of x. and that wil give us x ≤ 6, the sign did not change because we used a sign common to both sides to divide it. that is slso the reason why we had a positive value.
By the Pythagorean theorem:
с = √(3² + 6²)
= √(9 + 36)
= √45 ← <span>un-simplified radical form
= 3</span>√5 ← <span>simplified radical form
</span>≈ 6.71<span> </span>← <span>to the nearest hundredth</span>
