1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KIM [24]
3 years ago
14

30 POINTS!!!!! PLEASE HELP

Mathematics
1 answer:
Hoochie [10]3 years ago
3 0

Answer:

a) For a constant increment in x-variable, there is a constant increment in y-variable, for example, for x = 0 to x = 0.5 (increment = 0.5) y-variable goes from 60 to 62 (increment = 2); the same is valid for any couple of (x,y) values. This behaviour is characteristic of linear equations.

b) slope:

m = (increment in y-variable)/(increment in x-variable) = 2/0.5 = 4

y-intercept:

y1 = m*x1 + h

60 = 4*0 + h

60 = h

equation: y = 4x + 60

where y represents scores and x represents hours spent studying

c) The slope indicates that you need to study 1 hour to increase your score in 4 points

The y-intercept indicates that you will get at least a score of 60, even though you hadn't studied

You might be interested in
George is building a table out of boards that are 3.75 inches wide. He wants the table to be at least 36 inches wide. How many b
balu736 [363]

Answer:

10 whole boards

Step-by-step explanation:

1. 36 divided by 3.75 = 9.6

2. Round to the nearest whole number

3. 9.6 rounded = 10

7 0
3 years ago
I really need this answer quick
agasfer [191]
I got 168 because if you multiply 8x12 then you would get 96 and on the sides u need to multiply 3x12
3 0
3 years ago
Read 2 more answers
What 2 numbers equal to 8 when multiplied and 6 when added
expeople1 [14]
2 nuumbers multiply to 8 an addd to 6
factor 8 and add teh factor pairs
1,8
2,4


8+1=9
2+4=6


numbers are 2 and 4

if you were to solve it the
xy=8
x+y=6

y=6-x
x(6-x)=8
6x-x^2=0
0=x^2-6x+8
facotr
0=(x-2)(x-4)
set each to zero
x-2=0
x=2

x-4=0
x=4

x=2 or 4 and since they are interchangable, the numbes are 2 and 4

4 0
3 years ago
Read 2 more answers
Dy/dx = y/x^2
Lady_Fox [76]
Dy/dx = y/(x^2)
dy/y = dx/(x^2)
int[dy/y] = int[dx/(x^2)] ... apply integral to both sides
ln(|y|) = (-1/x) + C
|y| = e^{(-1/x) + C}
|y| = e^C*e^(-1/x)
|y| = C*e^(-1/x)
y = C*e^(-1/x)

So you have the correct answer. Nice job.

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

Check:
y = C*e^(-1/x)
dy/dx = d/dx[C*e^(-1/x)]
dy/dx = d/dx[-1/x]*C*e^(-1/x)
dy/dx = (1/(x^2))*C*e^(-1/x)
is the expression for the left hand side (LHS)

y/(x^2) = [C*e^(-1/x)]/(x^2)
y/(x^2) = (1/(x^2))*C*e^(-1/x)
is the expression for the right hand side (RHS)

Since LHS = RHS, this confirms the solution for dy/dx = y/(x^2)
8 0
3 years ago
Which factors can be multiplied together to make the trinomial 5x^2+8x-4
Kitty [74]

Answer:

Step-by-step explanation:

hello :

5x²+8x-4  quadratic expression when : a = 5  and  b=8  and  c= -4

∆ = b²-4ac        ∆ = 8²-4(5)(-4) = 64 +80 = 144 = 12²

X1 = ( -b -√∆)/2a       X1 = (-8-12)/10 = -20/10= -2

X2 =(-b+√∆)/2a       X2 = (-8+12)/10 = 4/10 = 2/5

us factorisation : a(X-X1)(X-X2)

5x²+8x-4= 5(x+2)(x-2/5) = (x+2)(5x-2)

you can verify ;  (x+2)(5x-2) = 5x²-2x+10x-4 = 5x²+8x-4

4 0
3 years ago
Other questions:
  • At what point on the curve y=x^4 does the normal line have slope 16?
    8·1 answer
  • Record the product 8x43 using expanded form to help
    12·1 answer
  • Jeff buys 3/4 pound of beads. 1/6 of the beads are pink and the rest are green. Jeff packs the green beads equally into 10 jars.
    5·2 answers
  • Which absolute value function, when graphed, represents the parent function, f(x) = |x|, reflected over the x-axis?
    9·1 answer
  • Please help I will give brainliest
    10·1 answer
  • Daily-high temperature measurements for 40 consecutive days are recorded for a particular city. The mean daily-high temperature
    14·1 answer
  • Mr. Cutler makes clay bricks and clay tiles to sell at maker fairs. It takes him 10 minutes to make a brick and 20 minutes to ma
    11·1 answer
  • Can someone pls help me? I’m confused!
    9·2 answers
  • PLEASE ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I PROMISE ILL MARK BRAINLEIST PLEASE I AM BEGGING YOU!!!!!!!!!!!!!!!
    11·2 answers
  • 9+4 to the power of 3 times(20-8) divided 2+6
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!