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lys-0071 [83]
3 years ago
12

10 POINTS!! Any answers help!!

Mathematics
1 answer:
Paraphin [41]3 years ago
7 0

10. 15

11. 18

12. yes; scale factor: 2.5

13. no

14. no

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I am confused on how to do this
babymother [125]
So, u would start by expanding the bracket and ignoring the 2 at the moment.
(x+9)(x+9)= x^2-18x+81(using the foil method!

Then u would put 2 at the front to get:
2(x^2+18x+81)
= 2x^2+36x+162
4 0
3 years ago
What is a rational and irrational number?
KIM [24]

Answer:

In mathematics, a rational number is a number such as −3/7 that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Every integer is a rational number: for example, 5 = 5/1.

In mathematics, the irrational numbers are all the real numbers which are not rational numbers. That is, irrational numbers cannot be expressed as the ratio of two integers.

Step-by-step explanation:

hope it helps :)))

8 0
3 years ago
How many rectangles can you make out of 18 cubes?
-Dominant- [34]
1*1*18
1*2*9
1*3*6
2*3*3


4 0
3 years ago
Read 2 more answers
If a rock falls from a height of 40 meters on Earth, the height H (in meters) after x seconds is approximately
Julli [10]
Once the rock hits the ground, we know that its height will be equal to 0m
because of this, we can replace H(x) with 0
40 - 4.9 {x}^{2}  = 0
now all we have to do is get x by itself
so..
4.9 {x}^{2}  = 40
then
{x}^{2}  = 40 \div 4.9
{x}^{2}  = 8.1632...
now take the square root of each side
x = 2.857...
2.857 seconds (rounded to the third decimal)

4 0
3 years ago
Multiple Choice Reflect the triangle over the x-axis. ​
Aliun [14]
The Answer= B (-6,1)
3 0
1 year ago
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