The given equation: y=4r-9
Substitute the value of x=3 into the equation
y= 4(3) -9
y= 12-9 subtract
y=3
Answer (3,3)
I’m pretty sure it’s -0.5
The easiest way to solve this problem is to multiply first, then cut in half.
1.25 times 4 is 5.
5/2 is 2.5.
You could also do it the slightly more difficult way:
1.25/2 is .625.
.625 times 4 is 2.5.
Answer:
31 cm
Step-by-step explanation:
The area (A) of a trapezium is calculated as
A = h (a + b)
where h is the height and a, b the bases
Here A = 162, h = 6 and a = 23 , then
× 6 (23 + b) = 162
3(23 + b) = 162 ( divide both sides by 3 )
23 + b = 54 ( subtract 23 from both sides )
b = 31
The other base is 31 cm
4*4= 16 + 16= 32 :) You could do 4 * 4 that equals 16 then add 16 to that to get over 28.