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Harlamova29_29 [7]
3 years ago
15

What are the solutions of the quadratic equation 49x^2=9?

Mathematics
1 answer:
Flauer [41]3 years ago
5 0
<span>Simplifying 49x^2 + -9 = 0
Reorder the terms: -9 + 49x^2 = 0
Solving -9 + 49x^2 = 0 Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '9' to each side of the equation. -9 + 9 + 49x^2 = 0 + 9
Combine like terms: -9 + 9 = 0 0 + 49x^2 = 0 + 9 49x^2 = 0 + 9
Combine like terms: 0 + 9 = 9 49x^2 = 9
Divide each side by '49'. x^2 = 0.1836734694
Simplifying x^2 = 0.1836734694
Take the square root of each side: x = {-0.428571429, 0.428571429}

hope this helps!!</span>
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Evaluate 2/3x + 1/2 for x=3/4 (I just copied the exact question)
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1

Step-by-step explanation:

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6 0
3 years ago
Write the equation of a line that is parallel to the line 2x - 3y = 5 and passes through the point (2, -1)
jek_recluse [69]

Answer:

The equation of the line is 2x - 3y = 7 ⇒ answer A

Step-by-step explanation:

* Lets revise the relation between the parallel lines

- If two lines are equal then their slopes are equal

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- If the slope of the line is m and passing through the point (x1 , y1),

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* Lets solve the problem

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∴ the slope of the line = the slope of the line 2x - 3y = 5

- Rearrange the terms of the equation to be in the form

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∵ 2x - 3y = 5 ⇒ subtract 2x from both sides

∴ -3y = 5 - 2x ⇒ divide two sides by -3

∴ y = 5/-3 - 2x/-3 ⇒ y = 2/3 x - 5/3

∴ The slop of the line is 2/3

∵ The line passes through point (2 , -1)

* Lets use the rule to find the equation of the line

∵ y - (-1)/x - 2 = 2/3

∴ y + 1/x - 2 = 2/3 ⇒ by using cross multiplication

∴ 3(y + 1) = 2(x - 2) ⇒ open the brackets

∴ 3y + 3 = 2x - 4 ⇒ put x an d y in one side

∴ 2x - 3y = 3 + 4

∴ 2x - 3y = 7

* The equation of the line is 2x - 3y = 7

8 0
3 years ago
Suppose you accumulated $500,000, perhaps from many years of saving. You put the money in a savings plan earning 6% compounded m
nata0808 [166]
The monthly interest rate is 6%/12 = 0.5%. The interest earned each month is
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You can withdraw $2500 each month without disturbing the principal amount.
3 0
3 years ago
5 10<br> — = —<br> s 14<br><br> Help!
allsm [11]
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7 0
3 years ago
C. If a &lt; 0 and f(a) &gt; 0, then the point (a, f(a))
professor190 [17]
The answer is: b - lies in quadrant II when graphed.

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3 0
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