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crimeas [40]
4 years ago
9

Greg needs $51 to go on a field trip. He has saved $12.75. He earns $6.50 per hour cleaning his neighbor's garden, and he earns

$5.25 per hour selling cakes at a store. Can Greg go on the field trip if he works at the garden for 2 hours and at the store for 5 hours?
(Use the inequality 6.50x + 5.25y + 12.75 ≥ 51.)

A.)Yes, because the total will be $62
B.) Yes, because the total will be $52
C.) No, because the total will be $50
D.) No, because the total will be $49

HELP PLEASE!! :)
Mathematics
1 answer:
Schach [20]4 years ago
5 0
B.)Yes, because the total will be $52
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The number of bacteria in petri dish A doubles every 10 minutes. The number of bacteria in oetri dish B doubles every 6 minites.
marissa [1.9K]
Givens
Petri Dish A sees a double ever 10 minutes
Petri Dish B sees a double ever 6 minutes

Consequences
A doubles 60 / 10 = 6 times.
B doubles 60 / 6 = 10 times.

Solution
If you work best with numbers then suppose there are 100 bacteria in both dishes at the beginning
A = 100 * 2^6
B = 100 * 2^10

A will have 100 * 64 = 6400 bacteria growing inside A
B will have 100 * 1024 = 102400 bacteria growing inside B

B/A = 102400 / 6400 = 16

There are 16 times as many in B than in A. <<<< Answer

7 0
3 years ago
A Jeep uses 14.6 gallons of gas to travel 328.5 miles.
PilotLPTM [1.2K]

Answer:

22.5

Step-by-step explanation: you just divide the two numbers :)

7 0
3 years ago
Find the volume of the sphere. Round your answer to the nearest tenth.
shepuryov [24]

Answer:

179.50

Step-by-step explanation:

The formula for calculating pi is as followed: 4/3·π·r³

The question is either asking to calculate using 3.14 for π or add π at the end of your answer instead of completing it. I will substitute π for 3.14.

∴V=4/3·3.14·3.5³

V=179.503333333

Round your answer to the nearest hundredth:

179.503333333 rounded to the nearest hundredth becomes 179.50

∴V=179.50

-------------------------------------------------------------------------------------------------------------

Another way to answer this question is to use the same formula; but not substitute 3.14 into the answer.

V=π.4/3·r³

V=π·57.1666666667

Round 57.1666666667: 57.17

V=57.17π

Either one would work. Hope this works.

5 0
3 years ago
Y is inversely proportional to x, when Y = 2, x = 4.
irina [24]

Answer:

Constant of proportionality is y divided by x.  y is 2 and x is 4.  2 divided by 4 is 1/2.

Let me know if that is correct.

Step-by-step explanation:

6 0
3 years ago
the alabama river is 729 miles. if 1 mile equals 1.61 kilometers, find the length of the river to the nearest whole kilometer. (
Gekata [30.6K]
1 times 729=729 so

1mile=1.61kiloneter
multiply both sides by 729 to get 729 miles on left side
729 miles=1173.69 kilometer

whole
1173.6
6>5 so round up
1174


answer is 1174 kilometer
4 0
4 years ago
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