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yaroslaw [1]
3 years ago
12

Exact solutions. X^2-5x-1=0

Mathematics
1 answer:
Romashka [77]3 years ago
7 0

Answer:

x= (5±√29)÷2

Step-by-step explanation:

Quadratic formula:

x= (-b±√b²-4ac)÷2a

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A student solved an equation and got the answer 3=9 how many solutions dose the equation have?
Nady [450]

Answer:

No solutions, 0

Step-by-step explanation:

When you solve a equation and get an answer of n = s (I am just using n and s a placeholders. They that be any number.) where n ≠ s, then there are no solutions to the equation.

3 0
4 years ago
HELP <br> what are the coefficients of 7x^4-9x^3+2x^2
Nikitich [7]

In this case, whenever you see a number directly in front of x, multiplying itself by/with x, it's a coefficient.

That applies to the numbers 7, 9, and 2 if I'm reading this correctly. Hope this helps!

6 0
3 years ago
Ldentify the function shown in this graph.<br> OA.y=3x-2<br> OB. y= 3x+2<br> OC.y= 2<br> OD. y -3x-2
Rudik [331]

Answer:

A.

Step-by-step explanation:

y intercept at (0, -2) and the lines slope is 3

5 0
3 years ago
A circular mirror has a diameter of 12 inches. A circular frame that is 3 inches wide surrounds the mirror. What is the combined
soldi70 [24.7K]

Answer:

176.71 in^{2}

Step-by-step explanation:

The equation to use to find the radius of a circle is r = \frac{d}{2}

The equation to use to find the area of a circle is A = \pi r^{2}

First, add 3 inches to the diameter of 12 inches. You will get 15 inches.

Second, you will want to find the radius. Substitute 15 for d. Solve to get the radius.

r = \frac{15}{2}

r = 7.5

The radius is 7.5 inches.

Next, you substitute 7.5 for r in the area equation. Solve to get the area.

A = \pi (7.5)^{2}

A = 176.71 in^{2}

8 0
3 years ago
The sum of three consecutive multiples of 3 is equal to 6 more than four times the smallest multiple. What is the largest multip
Setler79 [48]

Answer:  (a) 9

<u>Step-by-step explanation:</u>

1st multiple of 3: 1(3x)

2nd multiple of 3: 2(3x)

3rd multiple of 3: 3(3x)

Sum = 4(1st multiple of 3) + 6


1(3x) + 2(3x) + 3(3x) = 4(3x) + 6

 3x  +    6x  +    9x  =  12x  + 6

                        18x  = 12x + 6

                          6x =           6

                            x = 1


Largest (3rd) multiple is: 3(3x)

                                      = 9x

                                      = 9 · 1

                                      = 9

5 0
4 years ago
Read 2 more answers
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