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Oliga [24]
3 years ago
9

Why are equivalent equations important when solving a system using linear combination?

Mathematics
1 answer:
TiliK225 [7]3 years ago
7 0

Answer:

Linear equations are an important tool in science and many everyday applications. They allow scientist to describe relationships between two variables in the physical world, make predictions, calculate rates, and make conversions, among other things. Graphing linear equations helps make trends visible.

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What is the volume of the pyramid
Vlad1618 [11]

Answer:

A=lw+l(w

2)2+h2+w(l

2)2+h2=14·20+14·(20

2)2+202+20·(14

2)2+202≈1016.84192

Step-by-step explanation:

That might be it,Im sorry tried

6 0
3 years ago
In a sketch, a fountain is drawn 14 yard tall. The actual Fountain will be 68 times as tall. How tall will the Fountain be?
andrew11 [14]
The answer is 952 feet tall.

Here's how you get that:

So since, the fountain is sketched 14 yards tall and the fountain is 68 times as tall, you have to multiply 14 x 68 which = 952 yards tall.
7 0
4 years ago
Read 2 more answers
Solve the system of linear equations by substitution.<br><br> x=2y+7<br> 3x−2y=3
Murljashka [212]
<u>The system of equation</u>
First equation
x = 2y + 7
Second equation
3x - 2y = 3

<u>Substitute x with (2y + 7) in the second equation</u>
3x - 2y = 3
3(2y + 7) - 2y = 3

use distributive property
3(2y) + 3(7) - 2y = 3
6y + 21 - 2y = 3

add like terms
6y - 2y + 21 = 3
4y = 3 - 21
4y = -18
  y = -18/4
  y = -4.5

<u>Substitute y with its value, which is -4.5, in the first equation</u>
x = 2y + 7
x = 2(-4.5) + 7
x = -9 + 7
x = -2

<u>The solution is</u>
<u />(x,y) = (-2, -4.5)
6 0
4 years ago
How many terms are in the algebraic expression 2x - 9 x y + 17 y
Jet001 [13]

I see that they are  3 terms in this equation   2x, 9xy,17y

7 0
3 years ago
The figure shows secants LH and and tangent J intersecting at point L. AHIL is a right triangle. Find m/HLJ, which is
exis [7]

The values of x and y from the given diagram are 47 ad 86 degrees respectively

<h3>Circle theorem</h3>

From the given circle, the triangle HJL is a right triangle.

Determine the value of y

43 = 1/2 <y

<y = 43 * 2

<y = 86 degrees

Since the sum of angle on a straight line is 180 degrees, such that;

x+90+43 = 180

x + 133 = 180

x = 47 degrees

Hence the values of x and y from the given diagram are 47 ad 86 degrees respectively

Learn more on circle theorem here: brainly.com/question/26594685

#SPJ1

3 0
2 years ago
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