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3 years ago

In the equation y = 1.9x, 1.9 represents the constant of proportionality Find the constant of proportionality for the ratio 2/5

Mathematics

1 answer:

Rasek [7]3 years ago

6 0

The answer for this question is 0.76

Hope this helped

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Find the value of x.

wlad13 [49]

Answer: The letter x is often used in algebra to mean a value that is not yet known. it is called a variable or somethings an unknown in x + 2 = 7, x is a variable but we can work out its value if you try a variable does not have to be x though it could be y or w, or any letter, name or symbol. See: variable

Step-by-step explanation: and that's it! have a yummy cookie day! ◑﹏◐

3 0

3 years ago

Need help can someone plz help me solved this problem ASAP! Need help I will mark you as brainiest

erik [133]

Answer: 22, 38

3, 7

8, 12

<u>Step-by-step explanation:</u>

It is given that the PERIMETER is BETWEEN 22 and 38

--> 22 < P < 38

Perimeter = 2w + 2L

It is given that L = w + 5

Substitute P with 2w + 2L and substitute L with w + 5

22 < 2w + 2(w + 5) < 38

22 < 2w + 2w + 10 < 38

12 < 4w < 28

--> 3 < w < 7

Since L = w + 5, then w = L - 5

Substitute P with 2w + 2L and substitute w with L - 5

22 < 2(L - 5) + 2L < 38

22 < 2L + 2L - 10 < 38

32 < 4L < 48

--> 8 < L < 12

7 0

3 years ago

How do three planes intersect at one point?

natima [27]

Imagine a corner of a cube.
It is made of three planes interesting at a single point
The image should help.

7 0

3 years ago

What happens to the value?

Fiesta28 [93]

Answer:

D.) c is multiplied by 4

Step-by-step explanation:

$c = \dfrac{8a^3}{b}$

If a is doubled, it becomes 2a. If b is doubled, it becomes 2b. Now we replace a with 2a and b with 2b and simplify.

$c = \dfrac{8(2a)^3}{2b}$

$c = \dfrac{8 \times 8a^3}{2b}$

$c = \dfrac{4 \times 8a^3}{b}$

$c = 4 \times \dfrac{8a^3}{b}$

Answer: D.) c is multiplied by 4

4 0

2 years ago

Total mass vs. numbers of cd and numbers of cd

Gekata [30.6K]

Answer: Choice A) M = 0.25n + 100

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Explanation:

For now, I'll treat n as x, and M as y.

In other words,

x = number of CDs
y = total mass in kg

Let's select two points from this graph. I'll pick (200,150) and (400,200)

The slope of the line through those points is

m = (y2-y1)/(x2-x1)

m = (200-150)/(400-200)

m = 50/200

m = 0.25

Now we'll use the point (x,y) = (200,150) along with that slope value to find the y intercept b

y = mx+b

150 = 0.25*200+b

150 = 50+b

150-50 = b

100 = b

b = 100

You could also use (x,y) = (400,200) and you should get the same b value.

In fact, any other point from this graph works as well.

------------------------------

Since m = 0.25 and b = 100, we go from y = mx+b to y = 0.25x+100

This then translates over to M = 0.25n + 100 which is choice A

To help verify this, let's say we plugged in n = 100

M = 0.25*n + 100

M = 0.25*100 + 100

M = 25 + 100

M = 125

Which is confirmed by what the graph shows. I'll let you check the other points as well.

7 0

3 years ago