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2 years ago

Hii*iiiiiiiijkjkiiiiiiiii æ

Mathematics

2 answers:

lidiya [134]2 years ago

7 0

Hi what’s your name ???

ad-work [718]2 years ago

7 0

Answer:

hello

Step-by-step explanation:

You might be interested in

What is the additive inverse of -5

liraira [26]

Answer:

You should be thinking about a negative number. In fact, you should be thinking about a number that is the opposite of 5! -5! So, the additive inverse of 5 is -5

Step-by-step explanation:

4 0

2 years ago

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Last week, Peter ran 3 1/5 laps around the lake. Isaac ran 1 1/4 times as many laps around the lake as Peter did. How many laps

vlabodo [156]

Answer:

4 laps

Step-by-step explanation:

$3 \frac{1}{5} * 1 \frac{1}{4} =$

$\frac{16}{5} * \frac{5}{4} = \frac{80}{20} =4$

Isaac ran 4 laps.

4 0

3 years ago

Which statement describes the foreign exchange rate?

kiruha [24]

The foreign exchange rate is a rate at which one currency is exchanged for another, and it exists because not all currencies are worth the same. In short, money of one country is worth more than money of a different country.

8 0

3 years ago

Please help ! I’ll mark you as brainliest if correct.

deff fn [24]

Answer:

D = -87
Dx = 174
Dy = -435
Dz = 0
(x, y, z) = (-2, 5, 0)

Step-by-step explanation:

The determinant of the coefficient matrix is ...

$D=\left|\begin{array}{ccc}2&5&3\\4&-1&-4\\-5&-2&6\end{array}\right|\\\\=2(-1)(6)+5(-4)(-5)+3(4)(-2)-2(-4)(-2)-5(4)(6)-3(-1)(-5)\\\\=-12+100-24-16-120-15=\boxed{-87}$

The other determinants are found in similar fashion after substituting the constants on the right for each of the above matrix columns, in turn.

Those determinants are ...

$D_x=\left|\begin{array}{ccc}21&5&3\\-13&-1&-4\\0&-2&6\end{array}\right|=174$

$D_y=\left|\begin{array}{ccc}2&21&3\\4&-13&-4\\-5&0&6\end{array}\right|=-435$

$D_z=\left|\begin{array}{ccc}2&5&21\\4&-1&-13\\-5&-2&0\end{array}\right|=0$

The solutions are ...

x = 174/-87 = -2

y = -435/-87 = 5

z = 0

That is, (x, y, z) = (-2, 5, 0).

6 0

2 years ago

Does anyone know how to solve this?

horsena [70]

Answer:

$x=360$

Step-by-step explanation:

The inscribed angles theorem states that when given a circle, with an angle that has its vertex at the center of the circle, the measure of the angle is congruent to the measure of the arc surrounding it. One can apply this knowledge here by stating the following,

$m$

Substitute,

$x=2\pi$

However, this answer is in radians, it is the literal measurement. One must convert into degrees so that the answer fits the format of the question. The conversion rate to switch between radians and degrees is the following,

$degree=\frac{\pi}{180}radians$

Substitute,

$degree=\frac{180}{\pi}(x)\\\\degree=\frac{180}{\pi}(2\pi)\\$

Simplify,

$degree=\frac{180*(2\pi)}{\pi}\\degree=360$

8 0

3 years ago

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