Answer: ![(-9, 16]](https://tex.z-dn.net/?f=%28-9%2C%2016%5D)
This is the interval from -9 to 16. Exclude -9 but include 16.
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Work Shown:
The idea is to multiply all sides by 5, then add 1 to all sides
This converts to the interval notation
note: a curved parenthesis means "do not include this value in the solution set"; while a square bracket has us include the value. So we exclude -9 and include 16.
Answer:
99 square feet
Step-by-step explanation:
Because 8 times 9=72+27=99
Answer:
10·b = 60
Step-by-step explanation:
The given system of equation is presented as follows;
5·a + 5·b = 25...(1)
-5·a + 5·b = 35...(2)
Given that the coefficient of a in equation (1) is equal in magnitude but opposite in sign to the coefficient of 'a' in equation (2), to eliminate the variable 'a' when using the elimination method, we add both equations as follows;
5·a + 5·b + (-5·a + 5·b) = 25 + 35 = 60
5·a - 5·a + 5·b + 5·b = 60
5·a - 5·a = 0
5·b + 5·b = 10·b
∴ 5·a - 5·a + 5·b + 5·b = 60 = 0 + 10·b = 10·b
∴ 10·b = 60
Answer:
4 option
Step-by-step explanation: because they are 2 zeros so 1 and 2 wont work and theere are 6 2 so 3 wont work so 4 is the answer
Answer:
see explanation
Step-by-step explanation:
first we calculate the slopes of EF and FG using the slope formula
m = 
with (x₁, y₁ = E (7, 7 ) and F (4, 8 )
= 
= 
= - 
repeat with (x₁, y₁ ) = F (4, 8 ) and (x₂, y₂ ) = G (2, 2 )
= 
= 
= 3
if 2 lines are perpendicular then the product of their slopes = - 1
here
× = - × 3 = - 1
then EF is perpendicular to FG
