I'm assuming there is a typo in the question, and the expression is actually "6x+40". That expression factored is 2(3x+20).
Answer:
44
Step-by-step explanation:
Plug in -7 for x. -7 SQUARED equals 49. 49-5=44, so the answer is 44.
If you mean the x, it would be 50
Answer:
25.12 cm²
Step-by-step explanation:
The area of a circle is given by the formula ...
A = πr²
where r is the radius. Here, the diameter is given as 8 cm, so the radius will be half that, or 4 cm. The area is then ...
A = 3.14(4 cm)² = 50.24 cm²
The green shaded part is 1/2 a circle, so is half this area:
shaded area = 25.12 cm²
In form y=mx+b
m=slope
b=y intercept
allso
in form ax+by=c
slope=-a/b
y intercept=c/b
see each one
A.
-2x+3y=-15
slope=-(-2)/3=2/3
yint=-15/3=-5
correct
B. slope=2/3
yint=-5
correct
C. divide both sides by 6 to get to slope intercept form
y=4/5x-5
y=2/3x-5
correct
D. distribute
y+3=2/3x-2
minus 3
y=2/3x-5
correct
all of them are correct
