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galben [10]
3 years ago
5

Solve this step by step using the quadratic function y=x^2 +x+2

Mathematics
1 answer:
Ne4ueva [31]3 years ago
3 0

Answer:

x=<u>+</u>\frac{\sqrt{4y-7}-1 }{2}

Step-by-step explanation:

Quadratic function =( -b<u>+</u>\sqrt{b^2+4ac}  )/2a

x^2+x+2-y=0

x=-1<u>+</u>\sqrt{1^2-4(2-y)} /2

x=-1<u>+</u>\sqrt{4y-7} /2

x=<u>+</u> \frac{\sqrt{4y-7}-1 }{2}

Pretty sure this is right. Would appreciate a brainliest

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Cube 1 has a volume of c3. The side lengths of Cube 2 are three units longer than those of Cube 1. What is the volume of Cube 2?
kotegsom [21]
Volume of a Cube:  
<span>Since all of the edges of a cube are of equal length, there is no need to differentiate between the length, width and height.  The volume of a cube is determined by multiplying the length of three edges of the cube.  Let "a" define the length of an edge of the cube.  

Then the volume formula is defined as:</span>
V = a<span> × </span>a<span> × </span>a
<span>This formula is also written as V = a³<span>.

If a = 5 feet, then the volume is found like this:</span></span>
V = (5)³ = 5<span> × </span>5<span> × </span>5 = 125:  Since each value is a measurement of feet, the volume is therefore 125 cubic feet. 

Example 1:<span> Find the volume of a solid cube shape box whose side is 13m.</span>
Solution: 
<span>Given that: side a = 3m
Volume of the cube is therefore:</span>
V = a³
V = 13³
<span>V = 2197 m3</span>

Example 2:<span><span> Find the measure of volume of a cube for the given side length is 20 inches?</span>
<span>Solution:</span> 
<span>Given that: Side a = 20 inches
Volume of the cube is therefore:</span></span>
V = a³
V = 20³
<span>V = 8000 in3</span>
<span>Therefore, volume of a cube is 8000 in3.

</span>
Example 3:<span> Find the volume of a cube for the given side length 12.5 meter?</span>
Solution: 
Given that: Side a = 12.5 m
V = a³
V = 12.5³
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</span>
4 0
3 years ago
Which operation would you do second in the following problem?
tangare [24]

Answer:

subtration

Step-by-step explanation:

becouse you do division first becouse you have to do parentheses first the you  do subtration

7 0
3 years ago
Check all of the expressions that are equal to the one below.
Vsevolod [243]

Answer:

  A. 11•(8 + 7)

  B. 8•(11)-7•(11)

  C. 11•(7) + 11•(8)

Step-by-step explanation:

The commutative property of multiplication lets you swap the order of the factors in the product:

  (8 +7)•11 = 11•(8 +7)

The distributive property lets you eliminate parentheses:

  (8 +7)•11 = 8•11 +7•11

And the commutative properties of addition and multiplication let you rearrange this sum of products to ...

  (8 +7)•11 = 11•7 +11•8

6 0
3 years ago
What is the quotient of 4 divided by 9/10
kozerog [31]
The answer is 49/9 because you can first convert the fraction into a decimal and devide 4 and 0.9 and you will get 5.4 repeating and which is 49/9
3 0
4 years ago
Read 2 more answers
Over the weekend, trigg and Craig drove to lake of the pines to go fishing. Now they're preparing to go home. Trigg needs gas fo
larisa86 [58]
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I hope this helps!
7 0
3 years ago
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