Answer:
correct statements in Q no. 17 are;
Answers for Q no. 18;
Step-by-step explanation:
645/560=1.151785714
Ther perccent error in her estimate is 15%
Answer:
84
Step-by-step explanation:
Let the first digit = x
Let the second digit =y
x + y = 12
x + 4 = 3*y
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From the second equation, we learn that x = 3y - 4
Put that into the first equation.
3y - 4 + y = 12 Combine the left side
4y - 4 = 12 Add 4 to both sides
4y = 16 Divide by 4
4y/4 = 16/4
y = 4
=================
x + 4 = 12
x + 4 - 4 = 12-4
x = 8
So the number is 84
Answer:
36 cm hope this helps
Step-by-step explanation:
3×3=9×4=36
