Answer:
x<-3.5 or x<2
Step-by-step explanation:
2x²+3x<14
2x²+3x-14<0
2x²-4x+7x-14<0
2x(x-2)+7(x-2)<0
(2x+7)(x-2)<0
2x+7<0 or x-2<0
2x<-7 or x<2
x<-3.5
The answer that would best tell the combination of shapes that could make a piano are: 3 cylinders and a rectangular prism
<h3>How to find the shape of a piano</h3>
The shape of a piano can be gotten from the way that the piano is built. A piano is known to have a shape that is like a chord, it also has the parts that is built like a rectangular prism.
In order to get the volume of the object, the different shapes that it has would be calculated individually using their formula.
Read more on volume
brainly.com/question/1972490
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The correct answer is D!!
Answer:
(x,y)=(10,6)
Step-by-step explanation:
Substitute the value of x into the equation {4x+ 5= 70
{x= 6+ 2/3y
solve the equation 4(6+2/3y) +5y = 70
substitute the value of y into the equation y=6
solve the equation x=6 + 2/3 times 6
A possible solution is x= 10
Check the solution (x,y) = (10 ,6)
Simplify {4 times 10 + 5 times 6 =7
{3 times 10 - 2 times 6 = 18
The ordered pair is a solution {70 = 70
{18 =18