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3 years ago

Paula has a dog that weighs 3 times as much as Carla's. The total weight of the dogs is 48 lb how much does paula dog weigh

Mathematics

1 answer:

schepotkina [342]3 years ago

5 0

Answer:

Paula's Dog = 3 * Carla's Dog

A) PD + CD = 48

B) PD - 3 * CD = 0

Multiplying A) by -1

A) -PD -CD = -48 then adding to B)

B) PD -3*CD = 0

-4 * CD = -48

Carla's dog weighs 12 pounds

Paula's dog weighs 36 pounds

Step-by-step explanation:

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Evaluate 5(x + y)2 when x = 3 and y = 9

irakobra [83]

Hey there!

$Answer:\boxed{120}$

$Explanation:$

$5(x+y)2$ when x = 3 and y = 9

Let's first move to x and y.

$x=3\\y=9\\3+9=12$

Now multiply 5 by x and y(3+9).

$5*12(\text{x and y combined)}=60$

Now we have the number 2 left, so we have to multiply 60 by 2.

$60*2=120$

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3 years ago

A nutrition laboratory wants to construct a 95% confidence interval for the mean sodium content of "reduced sodium" hot dogs. A

tatuchka [14]

Answer:

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

Step-by-step explanation:

Given;

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Margin of error E = w/2 = 10mg/2 = 5mg

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Margin of error E = Z(r/√n)

n = (Z×r/E)^2

n = (1.96 × 25/5)^2

n = (9.8)^2

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Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

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3 years ago

] Monica Geller, head chef at Allesandro's and is looking to update the commercial equipment in her kitchen and bar that will al

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Answer:

The maximum amount that should be spent on the upgrade is $38,298,000.

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The ROI = 15% of x = 0.15x

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At the end of 4 years,

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2 years ago

Read 2 more answers

How do i do this? Its confusing

cestrela7 [59]

Answer:

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Step-by-step explanation:

A = P (1 + r/n)^(nt)

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r is the annual interest rate as a decimal,

n is the number of compoundings per year,

and t is the number of years.

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Answer: .20x+1.00

Step-by-step explanation:

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2 years ago