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Lubov Fominskaja [6]
3 years ago
5

What are the solutions of the quadratic equation? X2 = 7x + 4

Mathematics
2 answers:
masya89 [10]3 years ago
5 0

x=7/2+-1/2 \sqrt 65\\



Step-by-step explanation:


Ilya [14]3 years ago
4 0

Which are the solutions of the quadratic equation?  

Given: x2 = 7x + 4

x2 = 7x + 4

0 = -x2 + 7x + 4

Answer:  x = (7 + √33) / 2

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Can you help me with this question please? I will reward 20 points for best answer.
swat32

Answer:

Demand: q = -50p + 1200

Supply: q = 40p

Step-by-step explanation:

First let's define our variables.

q = quantity of T-shirts

p = price

We know that when p = 12, q = 600.  When p increases by 1, q decreases by 50.  So this is a line with slope -50 that passes through the point (12, 600).  Using point-slope form to write the equation:

q - 600 = -50 (p - 12)

Converting to slope-intercept form:

q - 600 = -50p + 600

q = -50p + 1200

Similarly, we know that when p = 9.75, q = 600 - 210 = 390.  When p increases by 1, q increases by 40.  So this is a line with slope 40 that passes through the point (9.75, 390).  Using point-slope form to write the equation:

q - 390 = 40 (p - 9.75)

Converting to slope-intercept form:

q - 390 = 40p - 390

q = 40p

5 0
3 years ago
Steven made snack mix he used 1/4 cup of raisins and 2/4 cups of nuts to make 1 serving how many cups to make 5 servings
suter [353]
1 and 1/4 cup of raisins and 2 and 1/2 cups of nuts for a total of 3 and 3/4 cups.
7 0
3 years ago
5. Express "a number x plus the square root of a number y”
Luden [163]

Answer:

x+√y

Step-by-step explanation:

3 0
3 years ago
Which number produces a rational number when added to 0.25
Tatiana [17]

0.65 is the correct one if not up there try 0.45 other possible one

Step-by-step explanation:

A rational number is defined as any number which can be expressed in fractional p/q of two integers, where 'p' is the numerator and 'q' is the denominator. 'q' can never be zero. A rational number can also be expressed as a terminating decimal. So, when 0.25 is added in 0.45 it becomes 0.65 which is rational.

8 0
3 years ago
The circumference of a circle is 3<br> π<br> π m. Find its diameter, in meters.
UkoKoshka [18]

Answer:

it is 8

Step-by-step explanation:

3 0
3 years ago
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