To answer this, set up a system of equations. What we know is that
5x + 2y = 100
And...
x+y=38
x represents the unknown number of 5 points questions
y represents the unknown number of 2 point questions
In my opinion the easiest way to solve this is to use substitution (that is when you find out the value of one variable, either x or y, and substitute that value as the variable).
So,
x+y=38
Subtract x from both sides
y=38-x
Now, plug (38-x) in as y in the other equation.
5x + 2(38-x) = 100
5x + 76-2x= 100
3x+76=100
3x=24
x=8
Now that you know that x=8, you can solve for y.
5x+2y=100
5(8)+2y=100
40+2y=100
2y=60
---- ------
2 2
y=30
X=8
Y=30
There are 8 five point questions on the test and 30 two point questions on the test
The volume of the car is 1800cm^3 which is equivalent to 0.0018m^3
<h3>Scale modelling</h3>
Given the scale factor that model of a car is amde to a scale of 1:40, Giving that the model as 45cm^3, this means that;
1 = 45cm^2
Determine the volume of the car
40 = x
Find the ratio
1/40 = 45/x
x = 40*45
x = 1800cm^3
x = 0.0018m^3
Hence the volume of the car is 1800cm^3 which is equivalent to 0.0018m^3
Learn more on scale factor here; brainly.com/question/25722260
#SPJ1
Answer:
y=(1/2)x+4
Step-by-step explanation:
you have 2 points but in order to find slope intercept you need slope so,
(y2-y1)/(x2-x1)
(-1+4)/(8-2)=1/2 =slope
slope intercept:
y-y1=m(x-x1)
y-2=(1/2)(x+4)
y-2=(1/2)x+2
y=(1/2)x+4
Answer:
104 is the answer to the question
Step-by-step explanation:
10(11)-6=110-6=104
Answer:
Step-by-step explanation:
Hi there!
Length of the field: units
Width of the field: units
To find how much greater the length of the field is than the width, subtract the width from the length:
Open up the parentheses
Combine like terms
Therefore, the length is units greater than the width.
I hope this helps!