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2 years ago

Evaluate the following expression for x = –2 and y = –4.

Mathematics

1 answer:

elena55 [62]2 years ago

4 0

Step-by-step explanation:

check your question again

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3 370 7<br>2 224 6<br>1 730 ?

dezoksy [38]

Ummmm could u ask a question because this makes no sense are you adding subtracting what?

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2 years ago

Solve and show your work for each question.

Harlamova29_29 [7]

Answer:

9/20

Step-by-step explanation:

You set the fraction up at first as 45/100. Then you know that 5 goes into each so you divide by 5 $\frac{45}{100} /5$

45/5=9

100/5=20

You get 9/20, and this is in simplest form.

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2 years ago

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This is a little difficult for me! Can someone explain?

ch4aika [34]

Answer:

We can write sin 21° as 1200 / x and also 0.36 so we can write:

1200 / x = 0.36

1200 = 0.36x

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3 years ago

What is the dimension of the hypotenuse of the accompanying right triangle?

Neko [114]

It's not possible to know, because you're not letting us see
the accompanying right triangle.

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2 years ago

What are the determinants for solving this linear system? 5x + 3y = 17 −8x − 3y = 9 |A| = |Ax| = |Ay| =

valentina_108 [34]

For this case we have the following system of equations:

$5x + 3y = 17\\-8x - 3y = 9$

We can Rewrite the system of equations of the form:

$Ax = b$

Where,

A: coefficient matrix

x: incognita vector

b: vector solution

We have then:

$A=\left[\begin{array}{ccc}5&3\\-8&-3\end{array}\right]$

$x=\left[\begin{array}{ccc}x\\y\end{array}\right]$

$b=\left[\begin{array}{ccc}17\\9\end{array}\right]$

Then, the determinant of matrix A is given by:

$|A|=(5)(-3)-(3)(-8)\\$

$|A|=-15+24$

$|A|=9$

Answer:

The determinants for solving this linear system are:

$|A|=9$

7 0

3 years ago

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