If your teacher wants you to factor, then use the difference of squares rule
9x^2 - 4
(3x)^2 - 2^2
(3x-2)(3x+2)
Answer:
The ratios are not equal
Step-by-step explanation:
Let
x ----> the number of dimes
y ----> the number of quarters
we know that
<em> Suri's coin purse</em>
x=6, y=4
The ratio of dimes to quarters is

<em> Martha's coin purse</em>
x=5, y=3
The ratio of dimes to quarters is

Compare the ratios

therefore
The ratios are not equal
Answer:
Alia=28
Huda=12
Step-by-step explanation:
Let the constant of proportionality be x
Hence, no. of sweets Alia had initially = 7x
No. of sweets Huda had initially = 3x
No. of sweets Alia has now= 7x-3
No. of sweets Huda has now= 3x+3
We know that, the ratio of the no. of sweets Alia has now to no. of sweets Huda has now = 5:3
Hence,

As we now got the constant of proportionality to be 4,
No. of sweets Alia had initially = 7*4=28
No. of sweets Huda had initially= 3*4=12
Answer:
0.3446,0.2119
Step-by-step explanation:
Given that Jill’s bowling scores are approximately normally distributed with mean 170 and standard deviation 20, while Jack’s scores are approximately normally distributed with mean 160 and standard deviation 15.
If X represents Jill scores and Y Jack scores we have
X is N(170,20) and Y is N(160,15)
since x and y are independent we have the difference
X-Y is
a) Prob that Jack’s score is higher
= P(-x+y>0)
=
b) X+Y is Normal with (330, 25)

Your answer would be 0.95 meters. hope that helped