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Nata [24]
3 years ago
6

14. A plane traveled from California and back. It took one hour longer on the way out than it did on the way back. The plane's a

verage
speed out was 300 mph. The average speed on the way back was 350 mph. How many hours did the trip out take?
A. 13 hours
B. 8 hours
C. 7 hours
D. 6 hours
Mathematics
1 answer:
kow [346]3 years ago
8 0

Answer:

  C.  7 hours

Step-by-step explanation:

Let the time for the trip out be represented by t. Then the time for the return trip is t-1. The distance was the same for both trips, so we have ...

  distance = speed × time

  300t = 350(t -1)

  300t = 350t -350 . . . . eliminate parentheses

  350 = 50t . . . . . . . . . . add 350-300t

  7 = t . . . . . . divide by 50

The trip out took 7 hours.

You might be interested in
Select the correct answer.
Liono4ka [1.6K]

Answer:

Option C.

Step-by-step explanation:

It is given that,

Total number of applicants = 9

Number of job = 3

We need to select 3 applicants out of 9. So, the required number of ways is

^9P_3=\dfrac{9!}{(9-3)!}

^9P_3=\dfrac{9\times 8\times 7\times 6!}{6!}

^9P_3=9\times 8\times 7

^9P_3=504

Therefore, there are ^9P_3=504 ways the positions can be filled because the order in which the applicants are chosen matters.

Hence, the correct option is C.

4 0
3 years ago
4. Which of the following can be used
JulsSmile [24]

The option that can be used to support the idea that the set of polynomials is closed under multiplication is; Option C: (10x^(0.5) - 8)(5x^(0.5) + 4)

<h3>What is the Closure property under multiplication?</h3>

When multiplying polynomials, the variables' exponents are added, according to the rules of exponents. It is pertinent to note that the exponents in polynomials are whole numbers. The whole numbers are closed under addition, which guarantees that the new exponents will be whole numbers. Thus, we can also say that the polynomials are closed under multiplication.

Now, looking at the options, we can say that option C is the only polynomial that is closed under multiplication because its' variables and exponents will not change;

(10x^(0.5) - 8)(5x^(0.5) + 4)

The output will retain the same thing.

Read more about closure property at; brainly.com/question/19340450

#SPJ1

7 0
2 years ago
IM TIMED HELP !!! GIVING 100 POINTS !! Triangles MNP and QST are congruent. What is the measure of angle T? all interior angles
olga2289 [7]

Answer:

36

Step-by-step explanation:

we know that the interior angles equal 180 and that the triangles are congruent so, 66 + 78 = 144 so then we have to subtract 180 - 144 and that gives us 36

Hope I helped :)

7 0
3 years ago
50% of 200: fifty percent of two-hundred is?
Serggg [28]

Answer:

100

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I know this is really easy but my head hurts so yeah
Ronch [10]
It's hard to read  could you just right the number
6 0
3 years ago
Read 2 more answers
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