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vichka [17]
2 years ago
12

The value of the intercept for the graph of 4x-5y=40 i s A 10 B 4/5 C-4/5 D -8

Mathematics
1 answer:
sveta [45]2 years ago
5 0

b option is right

4/5

Mark me as brainlist

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This graph shows a proportional relationship.
Alisiya [41]

Answer:

The constant of proportionality is:

  • k = 5/4

Step-by-step explanation:

We know that when y varies directly with x, we get

y ∝ x

y = kx

k = y/x

where 'k' is called the constant of proportionality

From the graph, it is clear that the point (2/5, 1/2) passes through the line which represents the direct relationship.

so we have the point (2/5, 1/2), and

x = 2/5

y = 1/2

so substituting x = 2/5 and y = 1/2 in the equation

k = y/x

k = [1/2] / [2/5]

k = [1 × 5 ] /  [2 × 2 ]

k = 5/4

Therefore, the constant of proportionality is:

  • k = 5/4
5 0
3 years ago
Which is the polynomial function of lowest degree with leading coefficient of 4 and roots 7 and 3?
laiz [17]

Answer:

Step-by-step explanation:

If the roots are 7 and 3, then x = 7 and x = 3 are solutions. In factor form, x = 7 is (x - 7); in factor form, x = 3 is (x - 3). We FOIL these together to get

x^2-3x-7x+21 which simplifies to

x^2-10x+21 and we distribute in the 4:

4(x^2-10x+21) to get

4x^2-40x+84 which is another way to write the last choice you're given.

3 0
3 years ago
In the following figure, select whether the green and red graphics are functions or not
ExtremeBDS [4]

Answer:

  C. green is not a function, red is a function

Step-by-step explanation:

A curve does not describe a functional relationship if a vertical line crosses it in more than one place. Clearly the y-axis crosses the green curve in 2 places, so it is NOT a function.

There is a very steep section at x=10 on the red curve. It we assume it is simply "very steep" and not "vertical", then the red curve IS a function. If you assume that short section is vertical, then the red curve is not a function, either. My choice is to go with "very steep," not "vertical."

My conclusion is that green is not a function; red is a function.

5 0
3 years ago
Two squares are attached to the sides of a quarter circle as shown.
olya-2409 [2.1K]
Area of a square is ; 10 * 10 = 100
We have 2 squares so total is 200.

Area of a circle is pi* r^2 = 3.14 * 100 = 314
But we have quarter of a circle so area will be 314/4 = 78.5

Total area of the shape is 200 + 78.5 = 278.5
6 0
2 years ago
Read 2 more answers
4(x + 1) = 28<br> Multi step
xenn [34]

Answer:

x = 6

Step-by-step explanation:

Pardon the bad handwriting

7 0
3 years ago
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