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Pepsi [2]
3 years ago
12

Solve x2 – 12x + 59 = 0 for x.

Mathematics
1 answer:
mr_godi [17]3 years ago
3 0
59 is a tough bird to deal with; its only factors are 1 and 59.

Thus, forget about factoring.  Instead, use the quadratic formula, or solve the equation by completing the square.

Please note:  x2 is ambiguous.  Please write x^2 to indicate "the square of 2."

Here you have 1x^2 - 12x + 59 = 0, for which a=1, b=-12 and c=59.

Use the quadratic formula:  x=[-b plus or minus sqrt(b^2-4ac)] / (2a)

to find the two roots.  Notice that the "discriminant" b^2 - 4ac will be negative, meaning that your two roots will be "complex."
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julsineya [31]

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12/8 = 1.5 so 9/x = 1.5.

x=6

4 0
3 years ago
Beth and Darcy are each driving a car. They start at the same location and will be driving the same route.
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After 150 miles, Beth will have used 150x  1/30 = 5 gallons, which leaves 10 gallons remaining in the tank.After 150 miles, Darcy will have used 150x 1/25 = 6 gallons, which leaves 10 gallons remaining in the tank. Meaning they will have the same number of gallons left at 150 miles
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3 years ago
What is the measure of the missing exterior angle?
larisa86 [58]

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3 0
3 years ago
The aquarium charges an entrance fee of $5 per child and $12 per adult. On one day, 100 people visited the aquarium. They collec
igor_vitrenko [27]

Answer:

We set up 2 equations

A) C + A = 100

B) 5C + 12A = 780

We multiply A by -5

A) -5C -5A = -500   then we add B

B) 5C + 12A = 780

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Step-by-step explanation:

6 0
3 years ago
Mary owned n sheep and Sam had exactly 4 times as many sheep as Mary. Mary buys 17 extra sheep and Sam sells 8 of his sheep. Sam
vodomira [7]

Answer:

The least value of n is, 9.

Step-by-step explanation:

Let n be the number of sheep in Integer.

Mary(M) owned the number of sheep is n i.e, M = n sheep

Sam(S) had exactly four times as many sheep as Mary , i.e, S = 4 n sheep

As per the given condition Mary buys 17 extra sheep

Now, Mary has total number of sheep, M = n +17 sheep

And Sam sells 8 of his sheep that means he has now,

S = 4n -8

But, Sam still has more sheep than Mary i.e,  4n-8 > n+17

Solve an inequality: 4n-8 > n+17

Add 8 both sides we get;

4n-8+8>n+17+8

Simplify:

4n>n+25

Now, subtract n from both the side, we get;

4n -n>n+25-n

Simplify:

3n>25 or n>\frac{25}{3}=8.33333333

Since n is the number of sheep in integer,

then the least value of n is, 9.  



6 0
3 years ago
Read 2 more answers
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