Solve the quadratic equation 4x^2+3x-2=0
1 answer:
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Use the equation for the area of a triangle:
where A = area, h = height of the triangle, and b = base of the triangle.
You know that h=18m and A=99
. Plug those values into the equation and solve for b, the base.
The base is 11m long.
where A = area, h = height of the triangle, and b = base of the triangle.
You know that h=18m and A=99
The base is 11m long.
Answer:
<em>(None of the answer choices you've provided match the correct answer.)</em>
Step-by-step explanation:
Given:
To find the solution (what equals), we must divide both sides of the equation by the coefficient of
Therefore, the solution of is
.
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We can check our work by substituting the solved value of into the given equation:
Since both sides of the equation are equal to each other, our solution is correct!
Given:
• Volume of small containers = 2.5 m³
,• Volume of large containers = 4 m³
,• Number of containers in the shipment = 140
,• Total volume = 440 m³
Let's find the number of the size of each container used.
Let s represent the number of small containers
Let L represent the number of large containers.
• Equation for number of containers:
s + L = 140
• Equation for total volume:
2.5s + 4L = 140
Hence, we have the set of equations:
s + L = 140...........................equation 1
2.5s + 4L = 440...................equation 2
Let's solve the set of equations simultaneously using substitution methos.
Rewrite equation 1 for L:
L = 140 - s...........................equation 3
Substitute (140 -s) for L in equation 2:
2.5s + 4(140 - s) = 440
Apply distributive property:
2.5s + 4(140) + 4(-s) = 440
2.5s + 560 - 4s = 440
Combine like terms:
2.5s - 4s + 560 = 440
-1.5s + 560 = 440
Subtract 560 from both sides:
-1.5s + 560 - 560 = 440 - 560
-1.5s = -120
Divide both sides by -1.5:
Substitute 80 for s in either of the equations.
Take equation 3.
L = 140 - s
L = 140 - 80
L = 60.
Therefore, we have the solutions:
s = 80 and L = 60
Therefore, the company used 80 small containers and 60 large containers