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PilotLPTM [1.2K]
3 years ago
15

Solve these simultaneous equations. Use any method you want 2x+y=22 X-y=5

Mathematics
2 answers:
Vikentia [17]3 years ago
6 0

Answer:

by using substuton method

2x=22-y

x=22-y/2                     equation (i)

so substuting the value x in x-y=5

22-y/2-y=5

22-y-2y/2=5

22-3y=10

22-10/3=y

12/3=y

4=y

now substitute the value of y in equation (i)

x=22-y/2

=22-4/2

=18/2

=9

therefore ,the value of x is 9 and y is 4

Step-by-step explanation:

sveta [45]3 years ago
4 0

Answer:

15 its not 22

Step-by-step explanation:

bec x y is 5 ya

soo 2 x 5 + 5=15

good luck need more

help

just follow me

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Select the correct answer.
Marta_Voda [28]
Remember x is x and f(x) is same thing as y.

f(5) = 4

It is same thing as saying, when x = 5, y aka f(x) should be 4. Aka the point (5,4)

Let’s look at D, if x =5 then f(x)=5? No, it should equal 4. So this is wrong. It is also not linear. So NOT D

Lets look at C, if x =5 then
1/5(5)+3 =
5/5 + 3 =
1+3 =
4

So, f(x) aka y = 4. Is this correct? Yes when x =5, y indeed should equal 4, but it is not linear. So NOT C

Lets look at B, if x=5 then,
2^5 -28 =
32 - 28 =
4

So, f(x) aka y = 4. Is this correct? Yes when x =5, y indeed should equal 4, AND it is linear SO THE ANSWER IS B

Check A too, it gets y=14 so thats wrong as it is not 4.


5 0
2 years ago
A garden is in the shape of a rhombus whose each side is 15 and it's one of two diagonal each 24 find the area of Garden
denis23 [38]

Answer:

Hey there!

A=0.5p\sqrt{4a^2-p^2}

A=216

Hope this helps :)

5 0
3 years ago
Algebra 1 TestNav answers
Rudik [331]
Can you post the image of the question?
So there for i can help
6 0
3 years ago
Evaluate 2 X (6÷2 + 8) -4 work it out pls
Allushta [10]

Answer:

18

Step-by-step explanation:

6 divided by 2 = 3 + 8 = 11

11 x 2 = 22 - 4 = 18

Hope this helps! :>

3 0
2 years ago
What x what x what = 450
garik1379 [7]

Answer:

9x5x10 = 450

Step-by-step explanation:

9x5 = 45

45x10 = 450

4 0
4 years ago
Read 2 more answers
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