Check your work here:
1)7/8.
7/8=0.875 and 3/4=0.75
2)3/20.
3/20=0.15 and 12.5%=0.125
3)48.4
increase by 10% means you multiply 44 by 100%+10% or 110% to get 48.4
4)612
decrease by 10% means you multiply 680 by 100%-10% or 90% to get 612
5)36,36,60
132/(3+3+5)*3,132/(3+3+5)*3,132/(3+3+5)*5
6)9.6,22.4
32/10*3, 32/10*7
7)20
14/0.7
8)31.5
18/4*7
9)17/12
2/3=8/12, 3/4=9/12 8/12+9/12=17/12
10)15/4
5*3/4
11)8
2^2+2*2=4+4=8
12)0
(-2)^2+(-2)*2=4-4=0
13)3
3(x-3)=0,(x-3)=0,x=3
14)2/5 or 0.4
5x+1=3,5x=2,x=2/5
15)5n+2
The sequence difference is 5 and the first term is 7
16)20
6(3)+2=18+2=20
17)-5
4(-2)+3=-8+3=-5
18)1
the coefficient of x is 1
19)4pi or 12.56
area of a circle is r^2*pi=2^2*pi=4pi
20)14pi or 43.96
circumference of a circle=2r*pi=2*4*pi=14pi
59, 51, 53
The formula you would use is
x+(x+2)+(x+4)
If you need help understanding, feel free to comment..
Answer:
The sum of 2 numbers is 52. Express the product of the numbers, P, as a function of one of the numbers, x.
the answer is p(x) = -x² + 52x
Step-by-step explanation:
let the two numbers be x and y
the sum of the two numbers = x + y
≡ x + y = 52
make y the subject of equation
y= 52 - x
to express the product of the numbers, P, as a function of one of the numbers, x. implies that
P(x) = x(-x + 52)
finally,
p(x) = -x² + 52x
Answer:
D
Step-by-step explanation:
We know that grasslands don't thrive in the cold, so we'll cross out the Arctic Circle.
Mid latitudes are 60 degrees, so it would be cold there too.
Tropical latitudes would be pretty hot.
So my guess is near the equator.
