= 16 + 49 - 3(11) - 4(10)
= 16 + 49 - 33 - 40
= -8
2a. speed= distance
---------------
time
60÷69 = 52.1739 miles per hour.
so for the next one with the airplane flies 296 km in 276 min is the same formula.
296/276 = 39.9839 mph.
I couldn't see the first question clear...sorry but apply same formula.
Hoping this will help you
Answer:
Step-by-step explanation:
The given graph is a straight line graph. The y axis represents the number of quarts of yellow paint that is mixed. The x axis represents the number of quarts of red paint that is mixed. We would write the required equation in the slope intercept form. The slope intercept form equation of a straight line is expressed as
y = mx + c
Where
m represents slope
c represents y intercept.
Slope = (y2 - y1)/(x2 - x1)
Slope = (2 - 1)/(5 - 2.5) = 1/2.5
Slope = 0.4
The straight line cuts the y axis at y = 0
It means that c = 0
Therefore, the equation is
y = 0.4x
Answer:
y=3(x+1)^2+7
Step-by-step explanation:
Answer:
r = 11
Step-by-step explanation:
mDG and mGM must add up to mDM
Step 1: Set up equation
mDG + mGM = mDM
r + 5 + 3r - 14 = 35
Step 2: Solve for <em>r</em>
<u>Combine like terms:</u> 4r - 9 = 35
<u>Add 9 to both sides:</u> 4r = 44
<u>Divide both sides by 4:</u> r = 11
