Your collection's mean answers
median - 1930
range - 54
interquartile range - 50
mean absolute devitation - 23.75
Your friends collection mean answers
median - 1929.5
range - 15
interquartile range - 7
mean absolute devitation - 3.5
Would really appreciate a brainliest!!
Answer:
angle A + angle B = 180 degrees is correct
Step-by-step explanation:
Answer:
x = 3.873 units
or x = 
units
Step-by-step explanation:
Hypotenuse = 4 , x = height of this isosceles triangle.
base is 2,
so Use Pythagorean Theorem.
x^2 + 1^2 = 4^2
x^2 = 4^2 - 1^2
x^2 = 16 - 1 = 15
x = root(15) =
To write 7.3 as a fraction you have to write 7.3 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.
7.3 = 7.3/1 = 73/10
And finally we have:
7.3 as a fraction equals 73/10
Answer:
x = -18
y = 4
Step-by-step explanation:
x + y = 4
2x + 3y = 30
You can do any math operation to each side of the equal sign as long as you do the same operation to both sides.
change x + y = 4 to x = 4 - y
Now substitute (4 - y) into the second equation, in place of x.
2(4-y) + 3y = 30
multiply the 2(4-y) part:
8 -2y + 3y = 30
simplify:
8 + y = 30
subtract 8 from each side:
y = 22
now substitute the value of y back into the first equation to solve for x:
x + 22 = 4
subtract 22 from both sides:
x = -18
Check:
x + y = 4
22 -18 = 4
4 = 4 (this checks)
2(-18) + 3(22) = 30
-36 + 66 = 30
30 =30 (this checks also)
PS: you could have solved for y first if you had wanted to. The results would be the same.
