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4 years ago

Solve this equation. 4x + 5 = 21

Mathematics

2 answers:

marin [14]4 years ago

7 0

LenKa [72]4 years ago

7 0

4 is the answer because 4 times for is 16 and add 5 is 21

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3 1/5 x 4 1/2 ayuda por favor

Harman [31]

Answer:

14 2/5

Step-by-step explanation:

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3 years ago

Which graph shows a linear function?

Stolb23 [73]

Answer:

Step-by-step explanation:

You have shared only one graph, that of a quadratic function with vertex at (0, 0) and an equation based upon y = ax^2, where a is a constant coefficient.

Please go back to the source of your question and describe the other graphs that were given to you.

The graph that shows a straight line is the linear function.

4 0

3 years ago

Complete the table below to solve the equation $2x + 12 = 4^x$

IrinaVladis [17]

2(2) + 12 = 4^(2)
4 + 12 = 16
16 = 16

only x = 2 will have f(x)=g(x) so x = 2 is answer

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4 years ago

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Murrr4er [49]

Answer:

Step-by-step explanation:

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7 0

3 years ago

What are the solutions to the quadratic equation (5y + 6)2 = 24? y = StartFraction negative 6 + 2 StartRoot 6 EndRoot Over 5 End

Paladinen [302]

Answer:

there are two solutions:

a) $y=\frac{-6+2\sqrt{6} }{5}$ , and

b) $y=\frac{-6-2\sqrt{6} }{5}$

Step-by-step explanation:

In the equation: $(5y+6)^2=24$ , since a perfect square with the unknown "y" is isolated on the left of the equal sign, we start by applying the square root on both sides of the equality, and then on isolating the unknown:

$(5y+6)^2=24\\\sqrt{(5y+6)^2} =+/-\sqrt{24} \\(5y+6)=+/-\sqrt{6*4} \\(5y+6)=+/-2\sqrt{6}\\5y=-6+/-2\sqrt{6}\\y=\frac{-6+/-2\sqrt{6} }{5}$

Therefore there are two solutions:

a) $y=\frac{-6+2\sqrt{6} }{5}$ , and

b) $y=\frac{-6-2\sqrt{6} }{5}$

10 0

3 years ago

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