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3 years ago

Pwease help me anyone. thanks :-) :-) :-) :-) :-) :-) :-) :-)!!!!

Mathematics

1 answer:

adell [148]3 years ago

3 0

A)
$x+3$

b)
$x(x+3)=340\\
x^2+3x-340=0$

c)
$x(x+3)=340\\ x^2+3x-340=0\\
\Delta=3^2-4\cdot1\cdot(-340)=9+1360=1369\\\sqrt{\Delta}=37\\
x_1=\dfrac{-3-37}{2}=-20\\
x_2=\dfrac{-3+37}{2}=17$

It's 17.

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Choose the solutions of the following systems of equations x^2+y^2=6 and x^2-y=6

den301095 [7]

Answer:

The solutions are (-√6,0) and (√6,0)

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Step-by-step explanation:

The equations are:

${x}^{2} + {y}^{2} = 6$

and

${x}^{2} - y = 6$

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$y = {x}^{2} - 6$

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${x}^{2} + ({x}^{2} - 6 )^2= 6$

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3 years ago

What is the center and radius of the circle with the equation x2 + y2 – 10x – 12y + 36 = 0 ?

Gennadij [26K]

X² + y² - 10 x - 12 y + 36 = 0
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4 years ago

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zheka24 [161]

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zimovet [89]

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Step-by-step explanation:

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3 years ago

In a survey of 100 Phoenix high school students, 40 were

melomori [17]

Answer:

40 part-time male students were in the survey.

Step-by-step explanation:

Given:

Total number of students in the Phoenix high school = 100

Number of female student = 40

Number of male student who went to Phoenix Full time = 20 students

Total number of full time students = 50 students

To Find:

Number of part time male students in the survey = ?

Solution:

we know that the total number of students = 100

Now total number of male students = total number of students - total number of female student

Now total number of male students = 100 - 40 = 60 students

Now among these 60 students, 20 males went to Phoenix

Full time

So the remaining male students = 60-20 =40 students

Hence these 40 students are part-time male students

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4 years ago