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SCORPION-xisa [38]
3 years ago
12

The value of the x-intercept for the graph of 4x-5y=40 is 1) 10 2) 4/5 3) -4/5 4) -8

Mathematics
2 answers:
borishaifa [10]3 years ago
7 0

Answer:

I took it and got this question anf got it correct! Hope i helped!

Step-by-step explanation:

- 8

ra1l [238]3 years ago
7 0
X-intercept just means the point when the line crosses the x-axis. When the line crosses the x axis, y must be equal to 0. So to find the x-intercept we just take the equation, set y=0, and solve for x.

4x-5y=40
4x-5(0)=40
4x=40
x=10
So the point of interception would be (10,0), or answer A.
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How to integrate cos^-2x . Question from Alevel Pure Maths 3 ​
VashaNatasha [74]

Answer:

I do think I can answer this

8 0
3 years ago
Please help me. There are 25 students in Mrs. Benatar‘s class at the beginning of the school year, and the average number of sib
adelina 88 [10]

Answer: 3.19

Step-by-step explanation:

So to find the average I used a simple but pretty effective method

3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+3+8/26=3.1923

So the new average is 3.19

8 0
3 years ago
Suppose that the number of a certain type of computer that can be sold when its price is P (in dollars) is given by a linear fun
Scilla [17]

Answer:

a) N(P) = -6P + 16000

b) slope = -6 computers per dollar

That means the number of computer sold reduce by 6 per dollar increase in price.

c) ∆N = -660 computers

Step-by-step explanation:

Since N(P) is a linear function

N(P) = mP + C

Where m is the slope and C is the intercept.

Case 1

N(1000) = 10000

10000 = 1000m + C ....1

Case 2

N(1700) = 5800

5800 = 1700m + C ....2

Subtracting equation 1 from 2

700m = 5800 - 10000

m = -4200/700

m = -6

Substituting m = -6 into eqn 1

10000 = (-6)1000 + C

C = 10000+ 6000 = 16000

N(P) = -6P + 16000

b) slope = -6 computers per dollar

That means the number of computer sold reduce by 6 per dollar increase in price.

Slope is the change in number of computer sold per unit Change in price.

c) since slope m = -6 computers per dollar

∆P = 110 dollars

∆N = m × ∆P

Substituting the values,

∆N = -6 computers/dollar × 110 dollars

∆N = -660 computers.

The number of computer sold reduce by 660 when the price increase by 110 dollars

7 0
3 years ago
ASAP I NEED HELP
alexdok [17]

The vertex of this parabola is at (3,-2). When the x-value is 4, the y-value is 3: (4,3) is a point on the parabola. Let's use the standard equation of a parabola in vertex form:

y-k = a(x-h)^2, where (h,k) is the vertex (here (3,-2)) and (x,y): (4,3) is another point on the parabola. Since (3,-2) is the lowest point of the parabola, and (4,3) is thus higher up, we know that the parabola opens up.

Substituting the given info into the equation y-k = a(x-h)^2, we get:

3-[-2] = a(4-3)^2, or 5 = a(1)^2. Thus, a = 5, and the equation of the parabola is

y+2 = 5(x-3)^2 The coefficient of the x^2 term is thus 5.

7 0
3 years ago
Adjust the equation so the line passes through the points.
Karo-lina-s [1.5K]

Answer:

adjust the equation so the line passes through the points

6 0
2 years ago
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