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saw5 [17]
3 years ago
15

PLEASE HELP 20 POINTS

Mathematics
1 answer:
icang [17]3 years ago
4 0
1. (7/21) = 0.33
2. (6/21) - (3/21) = (3/21)
= 0.14
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Without solving determine the number of real solutions for each quadratic equation
seropon [69]

Answer:

b^2-4b+3=0

b²-3x-b+3=0

b(b-3)-1(b-3)=0

(b-3)(b-1)=0

either

b=3 or b=1

.

2n^2 + 7 = -4n + 5

2n²+4n+7-5=0

2n²+4n+2=0

2(n²+2n+1)=0

(n+1)²=0/2

:.n=-1

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x - 3x^2 = 5+ 2x - x^2

0=5+ 2x - x^2-x +3x^2

0=5+x+2x²

2x²+x+5=0

comparing above equation with ax²+bx +c we get

a=2

b=1

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x={-b±√(b²-4ac)}/2a ={-1±√(1²-4×2×5)}/2×1

={-1±√-39}/2

3 0
2 years ago
Help plz go faster<3
kotegsom [21]

most to least likely to happen:

land on a number less than 3

land on a section with a 1

land on an even number

hope this helps!! :)

5 0
3 years ago
PLEASEE HELP ME I DONT KNOW HOW TO DO THIS !!
larisa [96]
G(h(0)) = 20

h(x) = x+4
h(0) = 0+4
h(0) = 4

g(x) = 5x
g(h(0)) = g(4) = 5(4) = 20
8 0
3 years ago
Find the average rate of change for the given function from x = -3 to x = 1.
Alika [10]
Average rate of change from x = -3 to x = 1 is (f(1) - f(-3))/(1 - (-3)) = (5 - (-3))/(1 + 3) = (5 + 3)/4 = 8/4 = 2
3 0
3 years ago
A proper fraction never has the same value as a mixed number? true of false?
vaieri [72.5K]

Answer:

true.........

6 0
3 years ago
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