Answer:
a= -2/3 b+/35/3 b=
Step-by-step explanation:
For a to find the answer you:
Step 1: Add -2b to both sides.
3a+2b+−2b=35+−2b
3a=−2b+35
Step 2: Divide both sides by 3.
3a
3
=
−2b+35
3
a=
−2
3
b+
35
3
Answer:
a=
−2
3
b+
35
3
For b to find the answer:
3a+2b=35
Step 1: Add -3a to both sides.
3a+2b+−3a=35+−3a
2b=−3a+35
Step 2: Divide both sides by 2.
2b
2
=
−3a+35
2
b=
−3
2
a+
35
2
Answer:
26.75
Step-by-step explanation:
There are two ways to do this. You can use the base*height/2 formula for the area of the triangle, or use the complex formula of determining triangle area without height.
The first is A=(b*h)/2
In this case you need to find the height using a²+b²=c²
Take your base (7.6) and divide it by 2 this will give you the bottom side of your triangle (3.8) now plug this, and the side value of 8 into the formula. Remember c is the hypotenuse (diagonal side) and x is the height.
3.8²+x²=8²
14.44+x²=64
x²=49.56
x=7.039 -now you have the height for the triangle and can use this to find the area
A=b*h (in this case we dont have to divide by two since we need two triangles because we split the original in two to find the base of 3.8)
so it's 3.8*7.039=26.75
(If you need more help look up Silicon Valley High school's video titled, "How to find the area of a triangle (without the height)"
It will teach you the formula
which teaches you to find the area of any triangle when all you are given is three sides
It would be 9, 9 1/2, 10, and 10 1/2. I think.
Answer:
8) Onaje is correct
9a) answers could be: 3(6y) or 4y + 6y + 8y or 2(2y + 3y + 4y)
b) all answers simplify to be 18y
Step-by-step explanation:
Paula is not correct because 16t + 9t ≠ 16 + 9 + 2t
16t + 9t only equals 25t
Absolute value of -2 is 2
absolute value of -3 is 3
so now the equation is 4 x 2 - 3
do 4 x 2 first = 8
now do 8 - 3 = 5