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krek1111 [17]
3 years ago
10

Two candles of equal height start to burn simultaneously. One of the candles is thicker than the other one and burns out in 4 ho

urs, while the thinner one burns out in 2 hours. Both of the candles are extinguished after some time, and the remaining height of the thicker candle is now 3 times as long as the thinner one. How many minutes were the candles burning for?

Mathematics
1 answer:
OLga [1]3 years ago
7 0

Answer:

hope this helps you to understand

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Express 1.31 x 10-7 in standard form
Rina8888 [55]
1.31 * 10-7 

13.1-7
 

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4 years ago
PLZ HELP!!!!!!!! due in 30 minutes im timed!
valentinak56 [21]

Option D:

Difference between g(x) and f(x) is 44.

Solution:

Let us first write the function of f(x).

Take any two points on the line (0, -1) and (-2, 0).

Here, x_1=0, y_1=-1, x_2=-2, y_2=0

Equation of a line:

$\frac{y-y_1}{x-x_1} =\frac{y_2-y_1}{x_2-x_1}

$\frac{y-(-1)}{x-0} =\frac{0-(-1)}{-2-0}

$\frac{y+1}{x} =\frac{1}{-2}

Do cross multiplication.

-2(y + 1) = x

-2y - 2 = x

Add 2 on both sides.

-2y = x + 2

Divide by -2 on both sides.

$y=-\frac{1}{2}x-1

y = -0.5x - 1

f(x) = -0.5x - 1

At x = 20,

f(20) = -0.5(20) - 1 = -11

g(x) = 1.5x + 3

g(20) = 1.5(20) + 3 = 33

Difference between g(x) and f(x)

            = g(20) - f(20)

            = 33 - (-11)

            = 33 + 11

            = 44

Difference between g(x) and f(x) is 44.

Option D is the correct answer.

4 0
3 years ago
What is 528,492 rounded to the nearest thousand?
Yanka [14]

Answer: 528,000

Step-by-step explanation: 492 is less then 500 so...

7 0
3 years ago
Model Cars, Inc. makes red cars, white cars, and blue cars. The profit on a blue car is $10 more than the profit on a white car.
tekilochka [14]

Answer:

Let b = profit on a blue car

w = profit on a white car

r = profit on a red car

b = w + 10 (1)

r = w - 7 (2)

2r = b -2

2r-b= -2 (3)

Subtract eq. (2) by 2q. (1)

r - b = 0 - 7 - 10

r - b = -17 (4)

Subtract eq. (3) by eq. (4)

r - 0 = -2 - (-17)

r = 15

in eq (2)

r = w - 7

15 = w - 7

w = 22

in eq (1)

b = w + 10

b = 22 + 10

b = 32

The profit on a blue car is $32

Step-by-step explanation:

THE ANSWER IS 32

3 0
4 years ago
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Identify the maximum and minimum values of the function y = 3 cos x in the interval [–2π, 2π]. Use your understanding of transfo
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You would need to do this with a graphing calculator
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