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2 years ago

Ms Hogan has more than 20 students in her class.

Mathematics

1 answer:

ELEN [110]2 years ago

7 0

Answer:

The answer is most likely 29

Step-by-step explanation:

you can have 5 groups of 5 with 4 left over, and 7 groups of 4 with one left over.

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Will 2/5+√3 be rational or irrational? Why?

Mars2501 [29]

Answer:

Step-by-step explanation:

2/5 is a rational number and square root of 3 is irrational

4 0

2 years ago

How many dollars are in Fifty pennies

andrew11 [14]

1/2. 50 pennies equals $0.50

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3 years ago

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Solve the equations for all values of x by completing the square x^2+62=-16x

lorasvet [3.4K]

Answer:

$x = \sqrt{2} - 8\\x = -\sqrt{2} - 8$

Step-by-step explanation:

To complete the square, we first have to get our equation into $ax^2 + bx = c$ form.

First we add 16x to both sides:

$x^2 + 16x + 62 = 0$

And now we subtract 62 from both sides.

$x^2 + 16x = -62$

We now have to add $(\frac{b}{2})^2$ to both sides of the equation. b is 16, so this value becomes $(16\div2)^2 = 8^2 = 64$ .

$x^2 + 16x + 64 = -62+64$

We can now write the left side of the equation as a perfect square. We know that x+8 will be the solution because $8\cdot8=64$ and $8+8=16$ .

$(x+8)^2 = -62 + 64$

We can now take the square root of both sides.

$x+8 = \sqrt{-62+64}\\\\ x+8 = \pm \sqrt{2}$

We can now isolate x on one side by subtracting 8 from both sides.

$x = \pm\sqrt{2} - 8$

So our solutions are

$x = \sqrt{2} - 8\\x = -\sqrt{2} - 8$

Hope this helped!

4 0

2 years ago

Jason is playing a trivia game with his friends. At the end of each round, his score updates to the square of 1 less than the pr

mezya [45]

Answer:

8+n^2

Step-by-step explanation:

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2 years ago

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Please help this is due in 20 minutes

Allushta [10]

Answer:

1.SAS, ASA,

2. Not congruent

3.C

4. If you could screenshot the whole page I can give tell you what it is.

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2 years ago