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Mazyrski [523]
3 years ago
9

The area of a rectangular classroom is given by the trinomial 10x^2 + 3x - 4 What are the possible dimensions of the classroom?

Use Factoring.
Mathematics
1 answer:
juin [17]3 years ago
7 0
Answer: The expression factors to (2x - 1)(5x + 4)

In a rectangle the area is L x W. So if we know the area is 10x^2 + 3x - 4, then all we have to do is factor it to find possible values for the L and W.

If you factor the expression by grouping, you will get (2x - 1) and (5x + 4).

Your questions asks for possible dimensions, you could give the two expressions as dimensions.

If you wanted to select a value for x, you could plug it in and get values that could be dimensions.

For example if you let x = 10, you would have a rectangle that has a width of 19 and a length of 54.
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Lisa [10]

Answer:

Yes

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Step-by-step explanation:

5 0
2 years ago
Which ordered pair is the solution to the system of linear equations y=5x+8 and -4x-1 ?
Margarita [4]
Hello : 
<span>
 y=5x+8
y= -4x-1 
5x+8 = -4x-1
9x =-9
x = -1 
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</span><span>ordered pair is the solution to the system : ( -1 , 3)</span>
8 0
3 years ago
Read 2 more answers
Solve the equation 4 x minus 7 space equals space 45 for x.
zimovet [89]

Answer:

x = 13

Step-by-step explanation:

For this problem, we will simply uses properties of addition and multiplication to isolate the x variable for the following equation.

4x - 7 = 45

Now consider the following. First, we must isolate the x term by adding 7 to both sides.

4x - 7 = 45

4x -7 +7 = 45 +7

4x = 52

Second, let's further isolate x by multiplying both sides by 1/4 to create a coefficient of 1 Infront of the x variable.

4x = 52

(1/4) * 4x = 52 * (1/4)

x = 13

Hence, we have solved the equation 4x-7=45 where x=13.

Cheers.

4 0
2 years ago
On Mars, an object weighs 38% as much as on Earth. How much would a person who weighs 165 pounds on Earth weigh on Mars?
nikdorinn [45]

Answer:

62.7

Step-by-step explanation:

165 * 0.38 = 62.7


This is assuming you mean an object weights 38% less on mars then earth, if its the other way around(they weight 38% more on mars then earth) it would be,


165 * 1.38 = 227.7

8 0
3 years ago
Read 2 more answers
Which method would determine the volume of the prism with dimensions 2x2x4 shown below?
malfutka [58]
+16 will give the volume
2x2=4
4x4=16
8 0
3 years ago
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