3 years ago

Find m …………….. ………….. …………..

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

7 0

Answer:

Hope this helps I'm not sure if its correct though, it must be correct anyway. So yea.

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Which statement is not true? X squared equals 100 if and only if X equals 10 orX equals -10. If X squared equal 100 then X equal

mamaluj [8]

Answer:

the second statement is not true

Step-by-step explanation:

If x squared equals 100, it doesn't mean necessarily that x is positive ten, since you can get 100 also by squaring the value (-10):

(-10) $(-10)^{2} = (-10) x (-10) = 100$

The second statement is ignoring the possibility of x being a negative ten which also gives 100 as answered when squared.

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3 years ago

Need help with a math question

Mekhanik [1.2K]

Answer:

$z =3\sqrt{13}$

Step-by-step explanation:

In the figure you can identify up to 3 straight triangles.

To solve the problem, write the Pythagorean theorem for each triangle.

Triangle 1

$13^2 = z^2 + x^2$

Triangle 2

$z^2 = y^2 + 9^2$

Triangle 3

$x^2 = y^2 + 4^2$

Now substitute equation 2 and equation 3 in equation 1 and solve for y.

$13^2 = y^2 + 9^2 + y^2 + 4^2$

$13^2 = 2y^2 + 9^2 + 4^2$

$169 = 2y^2 + 81 + 16$

$2y^2 =72$

$y^2 =36$

$y =6$

substitute the value of y in the second equation and solve for z

$z^2 = 6^2 + 9^2$

$z^2 = 36 + 81$

$z^2 = 117$

$z = \sqrt{117}$

$z =3\sqrt{13}$

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3 years ago

If I have 25 cookies and 100 friends how many pieces would each friend get if I eat 3 cookies (please put in fractions)

Svet_ta [14]

Answer:

they would each get 1/4 of a cookie

Step-by-step explanation:

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Ainat [17]

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4 years ago

A school is planning an event to raise $1,000 for charity. The cost of organizing the event is $200. The tickets are priced at $

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if they already have 200 then the "must collect" 800 to reach 1000

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