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Dovator [93]
3 years ago
6

Solve the system of linear equations Y+2.3=0.45x -2y=4.2-7.8

Mathematics
2 answers:
Natalija [7]3 years ago
4 0

Answer:

2.4,-1.2

Step-by-step explanation:

Zina [86]3 years ago
3 0
Solve the following system using substitution:
{y + 2.3 = 0.45 x
{-2 y = -3.6

In the second equation, look to solve for y:
{y + 2.3 = 0.45 x
{-2 y = -3.6

-3.6 = -18/5:
-2 y = -18/5

Divide both sides by -2:
{y + 2.3 = 0.45 x
{y = 9/5

Substitute y = 9/5 into the first equation:
{4.1 = 0.45 x
{y = 9/5

In the first equation, look to solve for x:
{4.1 = 0.45 x
{y = 9/5

4.1 = 41/10 and 0.45 x = (9 x)/20:
41/10 = (9 x)/20

41/10 = (9 x)/20 is equivalent to (9 x)/20 = 41/10:
{(9 x)/20 = 41/10
{y = 9/5
Multiply both sides by 20/9:
Answer:  {x = 82/9
                {y = 9/5
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Answer:

C

Step-by-step explanation:

y = mx +b  The b is where the graph crosses the y axis.  If you look a the graph it is crossing at 5.  The m is the slope.  It is the change in y over the change in x.  If you start at 5 and go up10 and over 1, you will be on the line.  So our slope is 10/1 which is just 10

5 0
2 years ago
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What is the smallest prime number that can be written as the sum of three different prime
snow_tiger [21]
Prime numbers 2,3,5,7,11,13,17,19,23
so 2+3+5=10 no
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4 0
4 years ago
I will give Brainliest!!
sergey [27]

The value of y in the triangle is 6°.

<h3>How to calculate the value of y in the triangle?</h3>

Firstly, it's important to note that a triangle has the total angles of 180°.

Based on the information, the triangle has interior angle measures of 11y, 10y + 10°, and 10y - 16º.

The value of y in the triangle will be illustrated thus:

11y + 10y + 10 + 10y - 16 = 180

31y - 6 = 180

31y = 180 + 6.

31y = 186

Divide.

y = 186 / 31

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The value of y is 6.

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5 0
1 year ago
The perimeter of a rectangular painting is 324 centimeters. if the width of the painting is 67 centimeters, what is its length?
Nina [5.8K]
I hope this helps you



Perimeter =2 (width +length )


324=2 (67+length )


162-67=length


length =95
6 0
3 years ago
A square with side lengths of 3 cm is reflected vertically over a horizontal line of reflection that is 2 cm below the bottom ed
oksian1 [2.3K]

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Step-by-step explanation:

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Hope it helps <3

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3 years ago
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