Answer: 7bb +19 ll ≥210
Step-by-step explanation:
Hi, to answer this question we have to write an inequality:
The product of the number of hours he works babysitting (bb) and the amount he earns per hour (7); plus The product of the number of hours he works lifeguarding (ll) and the amount he earns per hour 19; must be higher or equal to the amount he must earn this week (210)
Mathematically speaking:
7 bb + 19 ll ≥210
Answer: Basically you do the opposite of each sign to isolate the variable on one side.
Step-by-step explanation:
x + 9 = 17
-9 from each side
x = 8
x - 6 = 25
+ 6 to each side
x = 31
8x = 48
Divide each side by 8
x = 6
x/4 = 7
Multiply each side by 4
x = 28
90% = 0.9 (as a decimal)
So 2340 x 0.9 = 2106
2340 - 2106 = 234
So the Missouri River is 234 miles long
Answer:
75 * 1000 = 75000
75000 gram
Step-by-step explanation:
1 kg = 1000g, so the answer is simple (kg * 1000 = g)
Answer: 251 stickers
Step-by-step explanation:
She had 27 stickers before she started her sticker buying spree 14 days ago (2 weeks)
She bought 3 stickers on the 1st day of those 14
Then she started increasing in by 2 each day
Total for those 14 days = 3+5+7+9+11+13+15+17+19+21+23+25+27+29
Adding the 27 she already had
3+5+7+9+11+13+15+17+19+21+23+25+27+29+27 = 251 stickers