3 years ago

Which best explains why the equation 7x + 3 = 7x + 3 has infinitely many solutions?

Mathematics

1 answer:

DochEvi [55]3 years ago

7 0

Answer:

Step-by-step explanation:

both sides are equal to begin with so any x that you put in, will get multiplied by 7 and have 3 added to it

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Determine the value of a if one solution to the quadratic equation is x equals 5 + 3/2 I

Sindrei [870]

The value of a is $\frac{-9}{4}$

Step-by-step explanation:

1. Determine the other solution of x

If one value is 5 + $\frac{3}{2}$ then the other value is 5 - $\frac{3}{2}$

2. Use reverse technique to find the equation

(5 + $\frac{3}{2}$ ) (5 - $\frac{3}{2}$ ) = 0

25 - $\frac{-15}{2}$ + $\frac{15}{2}$ - $\frac{9x^{2} }{4}$ = 0

- $\frac{9x^{2} }{4}$ + 25 = 0

3. The equation is - $\frac{9x^{2} }{4}$ + 25 = 0

4. Find the value of a

a is the number with the variable $x^{2}$ therefore it is - $\frac{9}{4}$

Keyword: quadratic equation, solution

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3 years ago

X > 2 and x < 7 I don't understand

valentinak56 [21]

It means that x value is between 2 to 7 ( more than 2, but less than 7)
In notation, 2 < x < 7 or (2,7).

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3 years ago

If 50x = 500 then

harina [27]

Answer is OD. Equals 10

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When 3 times the number x is subtracted from 20, the result is 14. What number results when 4 times x is added to 5?

Vladimir [108]

Answer:

50.3

Step-by-step explanation:

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3 years ago

Solve: 1/3(9k + 12) = 15

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Step-by-step explanation:

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