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2 years ago

The difference of the square of a number and 10 is equal to 3 times that number. Find the negative solution.

Mathematics

1 answer:

Harrizon [31]2 years ago

3 0

Answer:

-2

Step-by-step explanation:

Let's call the number x. The statement tells us that

x^2 - 10 = 3x, or

x^2-3x-10 = 0

Factoring:

(x-5)(x+2) = 0. Here, we see that there are two solutions: x = 5 and x = -2. So, the negative solution is x = -2.

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Please help I don’t understand

Sauron [17]

Answer:

-1.96312>-2.2360

Step-by-step explanation:

first find - $\sqrt{5}\\$

which is -2.2360679775

now round it to match the lenth of the other problem

-1.96312...

-2.2360...

now remember that the bigger the negitive number, the smaller it really is,

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2 years ago

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xxMikexx [17]

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1 year ago

Match the following terms by evaluating the expression for x=-6

Scorpion4ik [409]

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3 years ago

Solve for 50 points<br> x^(2)=100

Eddi Din [679]

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3 years ago

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terry opened a savings account in December with $132 and saved $27 each month beginning in January the value of terrys account i

liq [111]

Let S be the amount in a savings account.
Let m be the number of months.

General equation
S = 132 + 27m

Specific question
July is the 7th month of the year including both January and July.
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S = 132 + 189
S = 321

Reasonableness?
Good question. You could estimate an answer.
Start with 150 dollars and say that you add 25 a month.
7 * 25 = 175
S = 150 + 175 = 325 All of this was done in my head. Since the exact answer obtained using the formula is 321, I think that's pretty reasonable using my estimate is a guide.

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3 years ago