Add them 2 equations to eliminate x's
-2x-y=9
<u>2x-9y=1 +</u>
0x-10y=10
-10y=10
divide by -10
y=-1
sub back
-2x-y=9
-2x-(-1)=9
-2x+1=9
-2x=8
divide by -2
x=-4
y=-1
(x,y)
(-4,-1)
A
<u>
</u>
Answer: The answer would be 1198.5 in.
Step-by-step explanation:
You would have to separate this polygon into 3 different shapes: a square, rectangle, and triangle. Here's a photo of the work:
Answer: 405 students
Step-by-step explanation:
From the question, Banneker Middle School has 750 students and we are told that Lynn surveys a random sample of 50 students and finds that 27 have pet dogs. The number of students at the school that are likely to have pet dogs goes thus:
Since out of 50 students surveyed, 27 have pet dogs, this means we multiply the fraction by 750. This can be mathematically written as:
= 27/50 × 750
= 27 × 15
= 405
This means 405 students are expecting to have pet dogs.
1. 34.5
2. 111
3. 69
4. 34.5
(mind you I took geometry a year ago and hated it but hopefully these are right?)
Step-by-step explanation:
Let a=x+2 and b=x+6
The area of a rectangle is given by
A=a*b
So
