Answer:
This is the correct way to set up the equation:
9x + 88 + 6x + 182 = 180
I'm going to move some things around so we can combine like terms. It now reads:
9x + 6x + 88 + 182 = 180
9x + 6x = 15x, so the equation now reads:
15x + 88 + 182 = 180
88 + 182 = 270, so the equation reads:
15x + 270 = 180
Subtract the 270 from both sides. 180 - 270 is -90:
15x = -90
Divide both sides by 15. -90 divided by 15 = -6:
x = -6
Now we can substitute -6 back into the separate equations.
9(-6) + 88 = ?
9 times -6 is -54. -54 + 88 = 34.
6(-6) + 182 = ?
6 times -6 = -36. -36 + 182 = 146
Now we can add 34 and 146 together.
34 + 146 = 180
I hope I helped answer your question!
Step-by-step explanation:
Answer:
x>12
Step-by-step explanation:
its x is greater than 12
Answer:
Mean track length for this rock specimen is between 10.463 and 13.537
Step-by-step explanation:
99% confidence interval for the mean track length for rock specimen can be calculated using the formula:
M±
where
- M is the average track length (12 μm) in the report
- t is the two tailed t-score in 99% confidence interval (2.977)
- s is the standard deviation of track lengths in the report (2 μm)
- N is the total number of tracks (15)
putting these numbers in the formula, we get confidence interval in 99% confidence as:
12±
=12±1.537
Therefore, mean track length for this rock specimen is between 10.463 and 13.537
The expression that represents the amount mother spent is 4 × 5.00 + 2.00.
This outing will cost $22.00.
Solution:
Number of members in a family = 4
Cost of one ticket = $5.00
Cost of soft drink = $2.00
Mother spent = Number of members × Cost of each ticket + Cost of soft drink
= 4 × 5.00 + 2.00
The expression that represents the amount mother spent is 4 × 5.00 + 2.00.
To solve this expression using PEDMAS rule.
First do multiplication.
4 × 5.00 + 2.00 = 20.00 + 2.00
Now do addition.
4 × 5.00 + 2.00 = 22.00
Hence this outing will cost $22.00.
