Hello,
I)
1 solution with multiplicity 2
(2x+1)²=0
II) ANSWER C (-4.41, -1.59)
-3-√2 and -3+√2
III)
y=x²+2x
y=3x+20
==>x²+2x=3x+20
==>x²-x-20=
Δ=1+4*20=81=9²
(x=(1-9)/2=-4 and y= 3*(-4)+20=8 ) or (x=(1+9)/2=5 and y=3*5+20=35)
Answer:
<u>b) true for one value of x</u>
<u>a) true for all values of x</u>
<u>c) true for no values of x</u>
sorry if they are wrong
Step-by-step explanation:
2x + 8 = -3.5x + 19
a) true for all values of x
<u>b) true for one value of x</u>
<u></u>
c) true for no values of x
9(x - 2) = 7x + 5
<u>a) true for all values of x</u>
<u></u>
b) true for one value of x
c) true for no values of x
3(3x + 2) - 2x = 7x + 6
a) true for all values of x
b) true for one value of x
<u>c) true for no values of x</u>
<u></u>
<u></u>
Answer:
5
Step-by-step explanation:
Q is asking how many (1/3)s are in (15/8):
(15/8) / (1/3)
<em>(to divide fractions, flip the second fraction over and then multiply)</em>
(15/8) * (3/1)
(15 * 3) / (8*1)
45/8
=5.625
Answer:
a = 374
Step-by-step explanation:
Given that:
Cost of children ticket = $6
Cost of adult ticket = $9
Total amount spent = $1219
Total number of people = 16
Let :
Children = c
Adult = a
a + c = 16 - - 1
6c + 9a = 1219 - - - 2
From 1
c = 16 - a
Using 2
6(16 - a) + 9a = 1219
96 - 6a + 9a = 1219
3a = 1123
a = 374.33
Adult = 374.33
The number should be a whole number, maybe there is a problem with the parameters given.
Answer:
Step-by-step explanation:
You are supposed to pull out the common factor and put it outside the brackets.
42: 6 * 7
54: 6 * 9
So the answer is
6(9 + 7)
