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omeli [17]
3 years ago
12

What is the answer to the problem: Solve (The square root of 2x-7) = 7?

Mathematics
1 answer:
quester [9]3 years ago
4 0
The equation is 
\sqrt{2x-7}=7\\\text{Elevating to 2 the two sides of the equation we get:}\\2x-7=49\\\text{Therefore:}\\2x=49+7=56\\x=\frac{56}{2}=28\\\text{Solution : }x=28
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What are geometric transformations? Define each one
Flura [38]
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6 0
3 years ago
I need help,I need to use substitution but I don't know how
lions [1.4K]

If y=x+6 and y=-2x-3, then you can replace y in either equation with the equivalent expression given by the other equation. In this case, you have

x+6=-2x-3

and you can solve for x.

x+2x+6-6=-2x+2x-3+6\implies3x=3\implies\dfrac{3x}3=\dfrac33\impliesx=1

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For the second system, you can write

5x-y=-5\implies 5x-5x-y=-5-5x\implies-y=-5-5x

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Then substitute this into the second equation and you get

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so that

y=5+5(2)=15

8 0
4 years ago
The elevations of four points below sea level are -47 feet, -24 feet, -8 feet, and -18 feet. The elevation of the point closest
Gelneren [198K]

The elevations of four points below sea level are -47 feet, -24 feet, -8 feet, and -18 feet.

The elevation of the point closest to sea level is feet

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elevation of the point farthest from sea level is feet.

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closet to sea level to farthest to sea level

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4 0
3 years ago
Five times the sum of a number and three is the same as three times the difference of twice the number and one what is the numbe
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Answer:

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3 0
3 years ago
A)Agudos<br> B)suplementares <br> C)congruentes<br> D)complementares <br> E)Rasos
True [87]

Answer:

The correct answer to this question is complementars

8 0
3 years ago
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