Answer:
(-5,1)
Step-by-step explanation:
i dont really know but might be right
1 kilometer is 1000 meters. Therefore, 2 kilometers is 2000 meters. 2000 is greater than 3000, so Sally rode farther by 1000 meter, or 1 kilometer.
The measure of the missing side is 3x^3 +2x - 7y + 9
<h3>Perimeter of a triangle</h3>
The perimeter of a triangle is equal to the sum of all the sides of the triangle. Mathematically;
P = s1 + s2 + s3
where;
s1 = s2 = -8x^3 + 2
P = -13x^3 + 2x - 7y + 3
Substitute the given parameters
-13x^3 + 2x - 7y + 3 = s3. + 2(-8x^3 + 2)
-13x^3 + 2x - 7y + 3 = s3 - 16x^3 -4
s3 = -13x^3 + 2x - 7y + 3 + 16x^3 + 6
s3 = 3x^3 +2x - 7y + 9
Hence the measure of the missing side is 3x^3 +2x - 7y + 9
learn more on perimeter of triangle here: brainly.com/question/24382052
#SPJ1
Solve the top equation for x
2x-2y=20
Divide everything by 2
x-y=-10
Get x by itself
x=-10+y
Then plug x into the other equation
-2(-10+y)+4(-10+y)=14
Solve new equation and you get y=-3
Plug y back into either equation
-2x+4(-3)=14
Solve and you get x=-13
So your answer will be
(x,y) = (-13,-3)
Z = 0.80 just to the right of z= 0. Note that the area to the right of z=0 is 0.5. The area to the right of 0.80 is smaller.
One way of answering this question is to use a calculator:
normalcdf(0.80, 1000) = 0.212 (answer)