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trasher [3.6K]
3 years ago
9

dos grifos abiertos simultáneamente llenan una picina en 3 horas uno de los grifos la llena en 4 horas ¿en cuanto la llena el ot

ro grifo?
Mathematics
1 answer:
scoundrel [369]3 years ago
8 0
Lo llena en 6 horas
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Ahmad had 6/7 of a spool of yarn. He used 2/5 of his yarn for a project. What fraction of the spool was used for the project?
GaryK [48]

Answer:

\dfrac{12}{35}

Step-by-step explanation:

2/5 ths of 6/7 ths:

\implies \dfrac67 \times \dfrac25=\dfrac{6\times 2}{7\times5}=\dfrac{12}{35}

4 0
2 years ago
Devon has 3 gallons of water in a large container. He begins to fill up glasses that each hold 1/8 a gallon of water. How many g
mel-nik [20]

Answer:

Devon can fill up 24 cups of water

6 0
2 years ago
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Sierra left $4.50 as a tip for a waiter. This was 18% of the bill before the tip. How much was her total bill before the tip?
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Jk I guess it was $25 dollars

8 0
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Helpp plzzz? thank uuuu
r-ruslan [8.4K]

Answer: 30

Step-by-step explanation:

7 0
3 years ago
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PLEASE HELP
SVETLANKA909090 [29]

Answer:

Hill 1: F(x)  = -(x + 4)(x + 3)(x + 1)(x - 1)(x - 3)(x - 4)

Hill 2: F(x)  = -(x + 4)(x + 3)(x + 1)(x - 1)(x - 3)(x - 4)

Hill 3: F(x) = 4(x - 2)(x + 5)

Step-by-step explanation:

Hill 1

You must go up and down to make a peak, so your function must cross the x-axis six times. You need six zeros.

Also, the end behaviour must have F(x) ⟶ -∞ as x ⟶ -∞ and F(x) ⟶ -∞ as x⟶ ∞. You need a negative sign in front of the binomials.

One possibility is

F(x)  = -(x + 4)(x + 3)(x + 1)(x - 1)(x - 3)(x - 4)

Hill 2

Multiplying the polynomial by -½ makes the slopes shallower. You must multiply by -2 to make them steeper. Of course, flipping the hills converts them into valleys.

Adding 3 to a function shifts it up three units. To shift it three units to the right, you must subtract 3 from each value of x.

The transformed function should be

F(x)  = -2(x +1)(x)(x -2)(x -3)(x - 6)(x - 7)

Hill 3

To make a shallow parabola, you must divide it by a number. The factor should be ¼, not 4.

The zeroes of your picture run from -4 to +7.

One of the zeros of your parabola is +5 (2 less than 7).

Rather than put the other zero at ½, I would put it at (2 more than -4) to make the parabola cover the picture more evenly.

The function could be

F(x) = ¼(x - 2)(x + 5).

In the image below, Hill 1 is red, Hill 2 is blue, and Hill 3 is the shallow black parabola.

6 0
3 years ago
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