percent means partst out of 100 so 12.5%=12.5/100=0.125 first find 12.5% of 28 then subtract 0.125 times 28=3.5 decrease 28-3.5=24.5
answer is 24.5
10. Mr. Guerrero left his house and drove north at an average speed of 40 mph.Two hours later, his daughter Miranda left the house and drove the sameroute as her father, but at an average speed of 48 mph. How far from homewere they when Miranda overtook her father?
Answers
Speed=distance / time ⇒ distance=time x speed distance=d time=t speed= s
d=s*t
Distance traveled by Mr Guerrero, when his daugther left the house Data: s=40 miles/ hour t=2 hours d=40 miles/ hour * 2 hours= 80 miles
Total distance traveled by Mr Guerrero: d=80 miles + 40 miles/hourt ⇒d=80+40t (1)
d=total distance. s=speed. t=time spent by Miranda for she overtook her father.
Distance traveled by Miranda. data:
s=48 miles/ hour d=total distance. t=time spent by Miranda for she overtook her father.
d=48 miles/hour * t ⇒d=48t (2)
With the equations (1) and (2), we make an system of equations:
d=80+40t d=48t
We can solve this system of equation by equalization method.
80+40t=48t 80=48t-40t 80=8t t=80/8=10
d=48t d=48*10=480
Answer: the thistance will be 480 miles.
How do I find the side length so I can figure out the area?
Answers
Answer:
You can form an equilateral triangle with those two lines.
The side length is 8√(3)
How do you explain how you convert a decimal?
Answers
For example if we have 7/10 we have one 0 in the denominator so we move the decimal spot 1 to the left
So: 7.0 becomes 0.70 or .7
To make a decimal into a fraction:
0.32
Just add two zeros to the right and that means 2 0's will be added in the denominator so:
0.32 32.0/100 or 32/100
Hope that helps :)
Subtract -23 - 7.2A. –30.2
B. –15.8
C. 15.8
D. 30.2
Answers
When you a positive number from a negative number you can just add the numbers and make the sum negative. -23 - 7.2 is like -1(23 + 7.2). So the answer is -30.2, answer choice A.
The answe is A. -30.2 aince for some reason this has to be