Answer:
x = 31 and x = 15
Step-by-step explanation:
(a)
(3x + 31) and (2x - 6) are a linear pair and sum to 180° , then
3x + 31 + 2x - 6 = 180
5x + 25 = 180 ( subtract 25 from both sides )
5x = 155 ( divide both sides by 5 )
x = 31
(b)
3x and (4x - 15) form a right angle and sum to 90° , then
3x + 4x - 15 = 90
7x - 15 = 90 ( add 15 to both sides )
7x = 105 ( divide both sides by 7 )
x = 15
Answer:
To round you take the last diget and round it either up or down based on the number
if the number is 0-5 you round down
if the number is 6-9 you round up
so in this case you would round down to 6.4.930
Step-by-step explanation:
Answer:
a: 30 b: -7 c. -11
Step-by-step explanation:
a. (3)(-5)(-2)
Which is 3x-5x-2:
3x-5 is -15
-15x-2=30
b. -5-2=-7
c. 3(-2)+-5
-6+-5=-11
Hence, the correct answers are 30,-7,-11
So,
If this was mental math, I would round 1.87 to the nearest pound and 2.46 to the nearest half pound, making the following addition problem:
2 + 2.5 = 4.5
Because 1.87 is closer to 2 than to 1.5 or 1, and 2.46 is sooo close to 2.5.
So I would say about 4.5 pounds of meat.
But if you're rounding to the nearest pound for both, then you have this equation:
2 + 2 = 4
Because in 1.87, 8 is greater than or equal to 5, and in 2.46, 4 is less than or equal to 5.
So in that case, it would be about 4 pounds of meat.
