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Delvig [45]
2 years ago
15

If DE=4x+10, EF=2x-1, and DF=9x-15, find DF. * Captionless Image

Mathematics
1 answer:
liq [111]2 years ago
6 0
Answer: 63

Hopefully the work makes sense but basically you will add equation DE and EF to get 6x+11 then use that equation with DF and solve for x which will get 26/3 then plug it into DF to get 63
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Tju [1.3M]

Answer:

3\sqrt{6}  and  -3\sqrt{6}

Step-by-step explanation:

We will take numbers to one side and variables to one side eliminate the "Square" with "Square Root" and solve for the variable x. The process is shown below:

3x^2-10=152\\3x^2=152+10\\3x^2=162\\x^2=\frac{162}{3}\\x^2=54\\x=\sqrt{54}

Now, we need to reduce the radical by using the rule shown below:

\sqrt{x*y}=\sqrt{x}  \sqrt{y}

Now,

\sqrt{54}=\sqrt{6*9} =\sqrt{6}  \sqrt{9} =3\sqrt{6}

The correct answer is  3\sqrt{6} and -3\sqrt{6}

<u>Note:</u> squaring positive and negative makes the same answer

4 0
3 years ago
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daser333 [38]

Answer:

1725

Step-by-step explanation:

5 0
3 years ago
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Zielflug [23.3K]
C = 3
You isolate the variable by dividing each side by factors that don’t contain the variable
5 0
3 years ago
Find the length of a hypotenuse whose legs are 5 and 6
avanturin [10]

Answer:

that other person is right

4 0
2 years ago
ILL GIVE BRAINLIEST PLEASE HELP ASAP PLS
postnew [5]

Answer:

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Step-by-step explanation:

complete rain be 1

then, =1-(1/4+1/3)

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or

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=10 inches

7 0
3 years ago
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