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ikadub [295]
3 years ago
11

One number is 3 times another. If the sum of the two numbers is 15, find the two numbers.

Mathematics
2 answers:
gregori [183]3 years ago
8 0

Answer:

15/4 and 45/4

Step-by-step explanation:

Let x and y be the numbers

x = 3y

x+ y = 15

Substitute the first equation in to the second equation

3y+y = 15

4y = 15

y = 15/4

x = 3(15/4)

x = 45/4

The two numbers are 15/4 and 45/4

Vinvika [58]3 years ago
6 0
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A scale drawing shows a circular fountain with a diameter of 12 units. The actual fountain has a diameter of 60 feet. Select all
EleoNora [17]

Answer:i think its 70 if im wrong im very sorry

Step-by-step explanation:

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When a river​ flows, the strength or force of the river depends on how far the river falls vertically compared to how far it flo
strojnjashka [21]

The figure is missing. There are several problems with same wording but different numbers

Here, we can use:

  • Horizontal distance: 258 feet

  • Vertical fall: 56.0 feet

Answer:

  • Slope = 56.0 ft / 258 ft ≈ 0.217

Explanation:

The <em>slope</em> measures how the rate of change of the vertical distance (vertical fall) with respect to the horizontal distance.

There are several forms to express this with words, which represent the same formula. Here are some of them:

  • Slope = rise / run
  • Slope = vertical change / horizontal change
  • Slope = change in y / change in x
  • Slope = Δy / Δx
  • Slope = (y₂ - y₁) / (x₂ - x₁)

As said, all those forms mean the same; they are equivalent.

Here, we have vertical fall = 56.0 feet, and horizontal distance = 258 feet, and by specifications of the problem (in the hint) the slope must be positive. Thus, you get:

  • Slope = vertical fall / horizontal distance = 56.0 feet / 258 feet ≈ 0.217
8 0
3 years ago
What is the decimal equivalent of 6/13 ? Round to tenths place. If answer doesn't
Arte-miy333 [17]

Answer:

0.5

Step-by-step explanation:

6/13 is the same as saying 6 ÷ 13

6 ÷ 13 = 0.4615384615

The first position after the decimal is the tenths column. Round up, because 6>5.

6 0
3 years ago
a rectangular table top has a length of 4 3/4 ft and an area of 11 7/8 square feet what is the width of the table top
mina [271]
4¾=19/4 and 11⅞=95/8.
Width=area/length=95/8÷19/4=95/8×4/19=5/2=2½ft.
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3 years ago
If you change the slope in the equation y= 5x + 7 to y = 2x + 7 how will its graph change?
Anuta_ua [19.1K]
If we see an equation in the form y=mx+c (where m and c are just some numbers), but the important thing is that the left hand side is "y" and not "2y" or "3y", then the m is the slope.

So y=5x+7 has a slope of 5 (the number before the x)
And y=2x+7 has a slope of 2 (the number before the x)

So as you move from left to right, the one with greater slope will increase y value faster. Just like if you were climbing two mountains. If you went for 1 kilometre up a really steep mountain, you would be higher up than if you went for 1 kilometre up a less steep mountain.

Another way of saying this is that by changing an equation from  slope 5 (steep) to slope=2 (less steep), then "It will increase at a slower rate than before"

Answer B
6 0
3 years ago
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