Answer:
5.1
Step-by-step explanation:
all you do is divide 12.55 by 2.54
d.30
Answer:
Solution given:
x. 
f. fx
13. 15. 195
14. 42 588
15. x. 15x
16. 10. 160
17. 3. 51
. n=70+x. 
=994+15x
we have
mean=sum/n
14.44=
14.44=
doing crisscrossed multiplication
(70+x)*14.44=994+15x
1010.8+14.44x=994+15x
15x-14.44x=1010.8-994
0.56x=16.8
x=16.8/0.56
x=30
Answer:
x = (y - 4)/7
Step-by-step explanation:
Subtract 4 from both sides to get:
y - 4 = 7x
Then, divide both sides by 7 to get:
(y - 4)/7 = x
:)>
Using similar triangles, the proportionality ratio of △QRS to △KJI is of 1/3.
<h3>What are similar triangles?</h3>
Similar triangles are triangles that have the same angles, and whose side lengths are proportional.
For this problem, we have that:
- The sides that have length of 2 on △QRS have lengths of 6 on △KJI.
- The side that has a length of 1 on △QRS has length of 3 on △KJI.
Hence the proportionality ratio of △QRS to △KJI is given as follows:
2/6 = 1/3.
More can be learned about similar triangles at brainly.com/question/305520
#SPJ1
Since the discriminant is positive, this means we have two distinct real solutions.
If a, b, and c are rational numbers, then a discriminant of D = 40 indicates the two solutions are not rational. We would need D to be a perfect square to get two rational solutions.
