Answer:
she plotted (8,5)
Step-by-step explanation:
the formula of that is (x,y). you would need to go 8 to the right and 5 units up. sophie mixed up the values.
Answer:
The height of the parallelogram is 3 yards.
Step-by-step explanation:
A parallelogram has a base of 7 yards, and an area of 21 square yards.
The formula for the area of a parallelogram is A = bh.
So, to find h (the height), that formula becomes h = A/b
h = 21/7
h = 3
The height of the parallelogram is 3 yards.
(Work Check:
A = bh
A = 7 * 3
A = 21)
Step-by-step explanation:
5x^2+2x=1
5x^2+2x-1=0
x=-b+/-√b^2-4ac÷2a
x=-2+/-√-2^2-(4×5×-1)÷2×5
x=-2+/+√4--20÷10
x=-2+/-√24÷10
x=-2+√24÷10 or -2-√24÷10
x=-2+4.9÷10 or -2-4.9÷10
x=2.9÷10 or -6.9÷10
x=0.29 or -0.69
Answer:
y = + 4
Step-by-step explanation:
y² - x = 7 ← substitute x = 9 into the equation
y² - 9 = 7 ( add 9 to both sides )
y² = 16 ( take square root of both sides )
y = ± 
= ± 4
the positive value of y when x = 9 is + 4
