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galben [10]
3 years ago
9

Please help me!! I will mark brainliest! Explain!!!

Mathematics
1 answer:
Tema [17]3 years ago
7 0

Answer:

ratio \:  = 3 \: to \: 5 \\ thus \: if \: 3 = 15 \\ then \: 5 =  \frac{15 \times 5}{3}  = 25

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Better value for 15.3 ounce cereal
Wewaii [24]
In the second case you have $4.59 per 20 ounces
Thus take 4.59 / 20 and you get $0.2295 per ounce or almost 23 cents per ounce

Hope it helps
7 0
3 years ago
Stu trained for a triathlon for 5 hours yesterday. He ran 5 miles and then biked 80 miles. His biking speed is 15 mph faster tha
lara31 [8.8K]

Answer:

Step-by-step explanation:

Given as :

The distance cover while running = D_1 = 5 miles

Let The speed for running = S_1

The distance cover with bike = D_2 = 80 miles

The speed for biking = S_2 = 15 mph +  S_1

Total Time taken = 5 hours

Now Time = \dfrac{\textrm Distance}{\textrm Speed}

∴ 5 hour = \frac{D_1}{S_1} +  \frac{D_2}{S_2}

Or,  5 hour = \frac{5}{S_1} +  \frac{80}{15+S_1}

Or, 5 hour = \frac{75 + 5 S_1 + 80 S_1}{S_1(15+S_1)}

or,  5 × (S_1^{2}+15 S_1) = 85 S_1 + 75

Or, 5 S_1^{2} + 75 S_1 -  85 S_1 - 75 = 0

or, 5 S_1^{2} -10 S_1 - 75 = 0

or,   S_1^{2} -2 S_1 - 15 = 0

Or, S_1^{2} -3 S_1 + 5 S_1- 15 = 0

Or, S_1 (S_1 - 3) + 5 (S_1 - 3) = 0

Or, (S_1 - 3) ( S_1 + 5 ) = 0

∴ S_1 = 3 , - 5

So, the running speed = 3 mile per hour

And the biking speed = 15 mph + 3 mph = 18 mile per hour

Hence The running speed of Stu is 3 mile per hour  .  Answer

7 0
3 years ago
The art club spent $45 on supplies for Valentines to sell during lunches. they made 60 valentines. what's selling price for a va
lina2011 [118]
Divide 45 by 60 which gives you 0.75. To check your answer, multiply 0.75 by 60 then add that answer to -45. So, the answer is 0.75
3 0
3 years ago
A spreadsheet used by accountants for Company XYZ contains 25 fields in which data is manually entered. If historical data revea
Ulleksa [173]

Answer:

See explaination for the details of the answer

Step-by-step explanation:

Defect per opportunity DPO = defects/ no. of opportunities = 2/25 = 0.08

Defect per million opportunities

DPMO = DPO * 1 million

DPMO = 0.08 * 1 million = 80,000

six sigma = 2.9, take the dpmo at higher level if not exact 80800 for 2.9

5 0
3 years ago
Anyone know how to do this?
sergiy2304 [10]

Answer:

11

Step-by-step explanation:

We need 60 dollars, we have 16

60-16 = 44

We need to earn 44 more dollars

At 4 dollars a pound

The money earned = lbs * dollars per pound

44 = lbs *4

Divide each side by 4

44/4 = lbs

11 = lbs

We must sell 11 more lbs

4 0
3 years ago
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