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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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ollegr [7]
If it takes 8 hours to drain 3/5.
How long would it take to drain 5/5

Cross multiplication
8 hours = 3/5
x hours = 5/5

(5/5 × 8) ÷ 3/5
13.3 hours.

Hope this helped
5 0
4 years ago
Solve -2x+9y=11<br> -5x+2y=-34
emmasim [6.3K]
Answer: (8,4)


Explanation:


First start by isolating the x in -2x+9y=11 to get x=4.5y-5.5.


Substitute the x in -5x+2y=-34 for 4.5y-5.5.


Solve for y, get 3.


Substitute the y in -2x+9y=11 for 3, solve for x and get 8.


(8,3)

7 0
3 years ago
The city's budget is 8,000,000. The city actually spends 12,000,000.What is the city's deficit
Anna35 [415]

Hi!

We will subtract the budget with the sum that was actually spent, like this:

8,000,000 - 12,000,000 = -4,000,000

The city's deficit is -4,000,000

Hope this helps!

6 0
3 years ago
Can someone help me with this
Serga [27]

Answer:

4/5, 3/4, 5/7, 2/7, 1/7

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which could be the surface area of a cubic box that contains a baseball that has a diameter of 3 inches: 9 square inches, 18 squ
MrRa [10]

Answer:

<h2>54 in²</h2>

Step-by-step explanation:

Look at the picture.

The edge of the cube is equal to the diagonal of the sphere.

Therefore, the length of the cube's edge is 3 inches.

The formula of a surface area of a cube:

S.A.=6a^2

Substitute a = 3 in:

S.A.=6(3^2)=6(9)=54\ in^2

3 0
4 years ago
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