If y=2x+2 what is the value of x when: y is 9

Mathematics

2 answers:

soldi70 [24.7K]1 year ago

8 0

Answer:

7/2 or 3.5

step:

make x the subject which is 2x=y-2.then,simplify the 2x into 1x since the question want the value of 1 x which is x=y-2/2.next,change the y into 9(x=9-2/2) and the answer is 7/2 or you can simplify it which makes the ans 3.5

Brrunno [24]1 year ago

4 0

Answer:

x = 3.5

Step-by-step explanation:

y = 2x + 2

9 = 2x + 2

7 = 2x

divide both sides by 2

3.5 = x

Hope this makes sense!

- profparis

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28 squared minus 39x minus 80 equals 0

Rudik [331]

Answer:

x = 704/39 ( <----Fraction)

Step-by-step explanation:

28 squared minus 39x minus 80 equals 0

784-39x-80=0 evaluate the power

704-39x=0 Subtract the numbers

-39x=-704 move the constant to the right hand side and change it's sign

Divide on both side to get x = 704/39

3 0

3 years ago

How do I solve this

Alina [70]

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