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777dan777 [17]
3 years ago
14

Please help me solve this and its about dot plots

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
7 0

Answer:

20

Step-by-step explanation:

Number of blue cars = 28

Number of dots in blue cars = 7

one dot  = 28÷ 7 = 4

One dot equals 4cars

Number of tan cars = 5*4 = 20

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Given the point (4,5) and the slope 6, find y when x=24
Aleks04 [339]
1) we find out the equation of the line
point-slope form; we need a point (x₀,y₀) and the slope:
y-y₀=m(x-x₀)

In this case:
point: (4,5)
slope: 6

Therefore:
y-5=6(x-4)
y-5=6x-24
y=6x-24+5
y=6x-19  (slope-intercepted form)

2)we find out "y" when x=24
if x=24; then
y=6(24)-19=144-19=125

Answer: y=125
6 0
3 years ago
Please help me if you can
MA_775_DIABLO [31]

Answer:

y = .025x +20

The y intercept is the value when x = o, or the starting value.  In this case, it is the temperature in degrees F at a depth of 0 meters.

Step-by-step explanation:

We have a point a (0,20) and a point at (2 , 20.05)

We can find the slope from

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

   = (20.05-20)/(2-0)

   = .05/2

     =.025

One of the points (0,20) is the y intercept  since x=0

We can use the slope intercept form of the equation

y= mx+b

y = .025x +20


The y intercept is the value when x = o, or the starting value.  In this case, it is the temperature in degrees F at a depth of 0 meters.

3 0
3 years ago
Read 2 more answers
Y+ 2x - 3+4x^2 + 3x - 5y
Anna35 [415]

Answer:

Step-by-step explanation:

y+2x-3+4x^2+3x-5y

Combine terms

4x^2-4y+5x-3

3 0
3 years ago
Evaluate it please don’t go online looking for answer I need this in 5 minutes
user100 [1]

g(7-h) +3

Now g = 5 and h=2, So lets plug the values

5(7-2) +3

= 5(5) +3

= 25 + 3

= 28

7 0
3 years ago
Read 2 more answers
Giving brainliest :)
Verizon [17]

Answer:

f^{-1}(x)=x^2+1

Step-by-step explanation:

The inverse of a function is when the x and y are swapped. So the first step is to write f(x) as y and then swap the x and y

Original Equation:

f(x)=\sqrt{x-1}\\

write f(x) as y (since that's what it represents)

y=\sqrt{x-1}

Swap x and y

x=\sqrt{y-1}

Square both sides

x^2=y-1

Add 1 to both sides

x^2+1=y

So this gives you the equation:

f^{-1}(x)=x^2+1

8 0
2 years ago
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