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tino4ka555 [31]
2 years ago
5

A submarine traveled to St. Vincent and

Mathematics
2 answers:
liq [111]2 years ago
8 0

Answer:

8 hrs to get there    (  12   hrs to get back)

Step-by-step explanation:

rate * time = distance      distance is the same for both trips

15 km/hr * (t-4)   = 10 ( t)

15t - 60 = 10 t

5t = 60

t = 12  

  t-4 = 8  hrs      

Charra [1.4K]2 years ago
6 0

Answer:

how much is 3 dollars

Step-by-step explanation:

how much is 3 dollars and 3 quarters and two dimes and 1 penny

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Simplify the expression -4x2(3x − 7).
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Answer:

-12x^3 + 28x^2

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14 is what percent of 92
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14 is what percent of 92? = 15.22.

Step-by-step explanation:

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Among 9 electrical components exactly one is known not to function properly. if 4 components are randomly selected, find the pro
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Answer:

0.4444

Step-by-step explanation:

Use the following property to ease the calculation:

P(At least one)=1-P(None)

Total number of electrical components: 9

Number that does not function well :1

Number that functions well : 8

We have ^8C_4=70 ways to to choose 4 good components from 8.

We have ^9C_4=126 ways to choose 4 components from a total of 9.

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3 years ago
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Which polynomial represents the sum below?
FromTheMoon [43]

Answer:          D. 8x² + x + 3

Sum means the answer to an addition problem. To find the sum of polynomials, we will add like terms.

<h2>What are like terms?</h2>

Like terms can be combined using addition or subtraction and have the same variables. Constants are also like terms with each other because they have no variables.

<h2>Solve</h2>

(4x² + 1) + (4x² + x + 2)      Starting equation from the question

= 4x² + 1 + 4x² + x + 2       Remove brackets

= 4x² + 4x² + x + 1 + 2       Rearrange to group like terms together

= 8x² + x + 1 + 2                Add like terms with the same 'x²' variables

= 8x² + x + 3                     Add like terms that are constants

Learn more about adding polynomials here:

brainly.com/question/1311115

6 0
2 years ago
Please help, no links please I really need help.
Lady bird [3.3K]

Answer:

C.

Step-by-step explanation:

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