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3 years ago

Solve the system of equations is given below 2x+3y=18 x+7y=31

Mathematics

1 answer:

Veronika [31]3 years ago

3 0

{2x + 3y = 18
x + 7y = 31}

2x+ 3y = 18
x=31-7

2(31-7)+3y=18

y=4

x=31-7*4
x=3

(x,y) = (3,4)

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<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B49%7D%20" id="TexFormula1" title=" \sqrt{49} " alt=" \sqrt{49} " align="absmiddle

VARVARA [1.3K]

$\sqrt{49} =\sqrt{7^2} =7$

<h3><em>Hope I helped you!</em></h3><h3><em>Succes!</em></h3>

6 0

4 years ago

3. 28/ч - 2x3 =<br> Answer

jeka94

Answer:

28/4 - 2x^3 = 7- 2x^3

Hope this helps!

4 0

3 years ago

Read 2 more answers

Help me please

morpeh [17]

Answer:

16820.16 dollar.

Step-by-step explanation:

future =present value *(1+i)^n

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7 0

2 years ago

Suppose the total weight of the fish caught stayed the same but instead of 100 fish caught during the weeklong fishing trip only

Paha777 [63]

The weight of each fish would be multiplied by 10.

Assume the first time, the weight was 800 lb. Since there were 100 fish caught, the weight of each fish would be 800/100 = 8 lb.

This time, however, only 10 fish were caught. The weight would be 800/10 = 80 lb.

80 = 8(10), so the weight is 10 times more.

4 0

4 years ago

Find the area of the polygon with the coordinates (1, 2), (3, 2), (3, 0), and

wlad13 [49]

Answer:

4 sq. units

Step-by-step explanation:

Since the polygon has 4 vertices, hence the polygon is a quadrilateral with four sides and four angles.

We can see that for this polygon, opposite sides are parallel and equal to each other.

To find the area of the polygon, we have to first get the length of the polygon and then the width of the polygon, hence:

The length is the distance between (1, 2) and (3, 2):

$length=\sqrt{(3-1)^2+(2-2)^2} =2\ units\\$

The breadth is the distance between (3, 2) and (3, 0):

$length=\sqrt{(3-3)^2+(0-2)^2} =2\ units\\$

Since length = breadth, hence this is a square.

Area= length * breadth = 2 * 2 = 4 sq. units

5 0

3 years ago