Answer:
-3
Step-by-step explanation:
consider f(x)=y
y=-3x+7
compare with y=mx+c
slope m=-3
Answer:
2(2-x)+12x=44
4-2x+12x=44
-4 -4
-2x +12x = 40
10x=40
/10 /10
x=4
Step-by-step explanation:
first you multiply the (2-x) by 2, you then subtract the 4 from both sides of the equation, you end up with -2x +12x = 40. Then subtract the 2x from the 12x and you end up with 10x. so now 10x=40. You then divide both sides by 10 and end up with x=10
sorry im not to good at explaining haha
Answer:
28.26 in
Step-by-step explanation:
Radius = (1/2) diameter
Radius = (1/2)(9)
Radius = 4.5 in
Circumference = 2πr
Circumference = 2(3.14)(4.5)
Circumference = 28.26 in
Answer:
The sampling method used is a stratified sampling method
Step-by-step explanation:
sampling is the selection of a predetermined representative subpopulation from a larger population, to estimate the characteristics of the whole population.
Stratified sampling: Here, the total population are divided into subcategories (strata) before sampling is done. The strata are formed based on some common characteristics. In our example, the times of the day (morning, afternoon and evening) has widely varying atmospheric conditions which will add biases to the measurement of air quality. For example, the air in the morning if compared to the afternoon in an industrial area may be purer because of minimal industrial activity, hence effective comparison will be made by stratification.
<h2>
Mass conversion</h2>
<em>Mass is the amount of matter that a body possesses and its unit in the </em><em>international system</em><em> of units is the</em><em> kilogram.</em>
<h3>How many kilograms is 2 pounds?</h3>
- <em>Knowing that </em><em>1 pound is 2.205 kilograms.</em>
<h3><em>
Therefore ⇒ 2 lb * 1 kg / 2.205 lb = 0.907 kg</em></h3>
<em />
Answer: In 2 pounds there are 0.907 kilograms.
