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Bingel [31]
3 years ago
5

A runner completed 26.2-mile marathon in 210 minutes.

Mathematics
1 answer:
ddd [48]3 years ago
7 0
There are numerous information's of immense importance already given in the question. Based on those information's the answer to the question can be easily deduced.
The distance covered by the runner in 210 minutes = 26.2 miles
Then
The distance covered by the runner in 1 minute = (26.2/210) miles/minute
                                                                             = 0.124 miles/minute
So the estimated unit rate in miles per minute is 0.124 miles per minute.I hope the answer is correct and the procedure is clear enough for you to understand.
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Find the discounted price of the teddy bear which has a regular price of $450.
GuDViN [60]
You will pay $360 for a item with original price of $450 when discounted 20%. 450x0.2=90.00 then 450-90=360
6 0
3 years ago
Find the period. Principal = 9300 =9300equals, 9300 rupees Annual rate of interest = 13 % =13%equals, 13, percent Total amount =
tekilochka [14]

Answer:

7 years

Step-by-step explanation:

Given:

Principal P = 9300

Interest rate r = 13% = 0.13

Final amount F = 17,763

Since the problem does not state that it is a compounded interest, we will assume this is a simple interest case.

The formula for simple interest is;

Interest I = Prt .....1

t = period

Final amount F = P + I

I = F-P

Substituting into equation 1;

(F-P) = Prt

t = (F-P)/Pr

Substituting the given values;

t = (17,763 - 9300)/(9300×0.13)

t = 7 years

Period = 7 years

5 0
4 years ago
5 positive x-tiles and 1 positive unit tile to represent 5x + (– 1) 2 negative x-tiles and 6 positive unit tiles to represent –2
snow_lady [41]

<u>Case 1 :</u>

5 positive x-tiles = 5x

1 positive unit tile = 1

5 positive x-tiles and 1 positive unit tile = 5x + 1

<u>Case 2 :</u>

2 negative x-tiles = -2x

6 positive unit tiles = 6

so, 2 negative x-tiles and 6 positive unit tiles = -2x+6

We see that Gracia has represented the 1st case as 5x+(-1), which should be 5 positive x-tiles and 1 negative unit tile.

Hence the statement : 5 positive x-tiles and 1 positive unit tile to represent 5x+(-1) , explains Gracia's error.


4 0
3 years ago
Read 2 more answers
Write the statement for given expression a) x+3 b) 8-2x K/2 +1
kiruha [24]

Step-by-step explanation:

Decide which of the following are quadratic equations.

(1) x2 + 5x – 2 = 0

(2) y2 = 5y – 10

(3) y2+

1

y

=2

(4) x+

1

x

=-2

(5) (m + 2) (m – 5) = 0

(6) m3 + 3m2 – 2 = 3m3

ANSWER:

(1) x2 + 5x – 2 = 0

Only one variable x.

Maximum index = 2

So, it is a quadratic equation.

(2) y2 = 5y – 10

Only one variable y.

Maximum index = 2

So, it is a quadratic equation.

(3) y2+

1

y

=2

⇒y3+1=2y

Only one variable y.

Maximum index = 3

So, it is not a quadratic equation.

(4) x+

1

x

=-2

⇒x2+1=-2x

Only one variable x.

Maximum index = 2

So, it is a quadratic equation.

(5) (m + 2) (m – 5) = 0

⇒m2-3m-10=0

Only one variable m.

Maximum index = 2

So, it is a quadratic equation.

(6) m3 + 3m2 – 2 = 3m3

Only one variable m.

Maximum index = 3

So, it is not a quadratic equation.

5 0
3 years ago
10) Quantas combinações de duas cores podemos fazer com as cores verde, azul, amarelo,
Juliette [100K]
A 20 is your answer
6 0
3 years ago
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