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BlackZzzverrR [31]
3 years ago
13

Some one please help​

Mathematics
1 answer:
n200080 [17]3 years ago
8 0

Answer:

sorry

Step-by-step explanation:

............................

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Solve the system using substitution.
Maru [420]

Answer:

Given: The following system:

4x + y − 2z=18          ......[1]

2x-3y+3z = 21          ......[2]

x-3y=6                      ......[3]

we can write equation [3] as;

3y = x-6                     ......[4]

Multiply by 3 in equation [1] to both sides of an equation we get,

3 \cdot(4x+y-2z)= 3\cdot 18 or

12x+3y-6z=54              ......[5]

Substituting the equation [4] in [2] and [5] we get;

2x-(x-6)+3z=21 or

2x-x+6+3z=21

Simplify:

x+3z=15            .....[6]                       [combine like terms]

12x+x-6-6z =54

Simplify:

13x-6z=60         ......[7]        [Combine like terms]

On Solving equation [6] and [7] simultaneously,

x+3z=15

13x-6z=60

we get the value of x

i.e, x=6

Substitute the value of x in equation x+3z=15  we get

6+3z=15 or

3z=9

Simplify:

z=3

Also, substitute the value of x=6 in equation [3] we get the value of y;

x-3y=6

6-3y=6 or

-3y = 0

Simplify:

y = 0

Therefore, the solution to the system of three linear equation is, (6, 0 , 3)


5 0
3 years ago
A recipe includes 6 cups of flour and 3 cup of shortening. Write the ratio of the amount of flour to the amount of shortening as
Zarrin [17]

Answer:

2 cups of flour : 1 cup of shortening

Step-by-step explanation:

So lets gather our information.

We know it takes 6 cups of flour for the reciepe.

We also know it takes 3 cups of shortening.

To find the ratio, put the two number values in a fraction:

cups of flour/cups of shortening

=

6/3

This says for 6 cups of flour, there are 3 cups of shortening

We can simplyfy this to:

2/1

This says for 2 cups of flour, there is 1 cup of shortening.

<u>Answer:</u>

<u>2/1</u>

Hope this helps! ;)

5 0
2 years ago
Helppppppp<br> Plssssswwww
Irina18 [472]

Answer: No Hope this helps, please consider making me Brainliest.

Step-by-step explanation:

If it is not proportional, it will not cross the origin (I remember this data from the other question you posted). Hope this helps, please consider making me Brainliest.

6 0
1 year ago
Find the 12th term of following geometric sequence 5, 20,80, 320,
vesna_86 [32]
5, 20, 80, 320, 1280, 5120, 20480, 81920, 327680, 1310720, 5242880, 20971520

The 12th term would be 20,971,520
Everything is being multiplied by 4 each time
5 0
3 years ago
Write a formula for fogoh, where f(x) = x + 1, g(x) = - 3x, and h(x) = 5 - X.<br> (fogoh)(x) =
Marina86 [1]

Step-by-step explanation:

f(x) = x + 1

g(x) = -3x

h(x) = 5-x

find fogoh

first we find fog

f(g(x)) = -3x + 1

then we find fogoh = -3(5-x ) +1

= -15 + 3x +1

= 3x -14

3 0
2 years ago
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