04.03.2022
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09.07.2023, solved by verified expert

Step-by-step explanation:

Isolate y for 2y+77=-5:

Isolate x for -205-7x=1272

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Mathematics

Step-by-step explanation:

Isolate y for 2y+77=-5:

Isolate x for -205-7x=1272

Mathematics
Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram
Mathematics

For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Mathematics

The answer is in the image

Mathematics

Speed=Distance/time

Here,

distance=15m

time=1sec

speed=15/1=15m/sec

Distance=Speed*time

time=15min=15*60sec=900sec

Distance travelled in 15 min=15*900=13,500m

=13500/1000 km=13.5Km

Mathematics

30% of 420 are first year students

first year students = (30/100 )*420

=126 students

Student who are not in first year = 420-126

=294 students

Mathematics

tip=18% of 75.45

=18/100 * 75.45 = $13.581 Tip =$13.581

Mathematics