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Olenka [21]
4 years ago
7

Find the value of 3x+2 when 7+ x =5 Please Help me !!

Mathematics
2 answers:
solniwko [45]4 years ago
8 0
X = -2

3(-2) + 2 = -4
Nastasia [14]4 years ago
8 0
7+x=5 would be x= -2. Therefore, if you substitute -2 in for x in 3x+2, you would get -4 as your answer.
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What is the equation of the circle with center (0, 0) that passes through the point (–4, –6)?
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Answer:

Option 4: x^2+y^2 = 52

Step-by-step explanation:

Given

Centre at origin

Point on circle = (-4, -6)

The distance between origin and point on circle will be the radius of the circle

So,

r = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}\\r= \sqrt{(-4-0)^2+(-6-0)^2} \\r = \sqrt{(-4)^2+(-6)^2}\\r = \sqrt{16+36} \\r = \sqrt{52}

As the center is at origin the standard equation will be:

x^2+y^2 = r^2\\

Putting the value of r

x^2+y^2 = (\sqrt{52})^2\\x^2+y^2 = 52

Hence, last option i.e. Option 4 is correct ..

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3 years ago
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3 0
3 years ago
A box has 1 red marble, 1 blue marble, and 4 green marbles of the same shape and size. Dan draws a marble randomly from the box,
lora16 [44]

Answer:

2/3 or 66.66..%

Step-by-step explanation:

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8 0
3 years ago
Jill has a rectangular garden that measures 12 by 14. She wants to increase the area to 225 by increasing the width and length b
antoniya [11.8K]

Answer:

are you sure it is 225 because when i add 2 to both sides it is 14 by 16 which when you multiply it becomes 224

Step-by-step explanation:

8 0
3 years ago
Julia has read her favorite book 6 times,This is 3 times more than her Kami.How many times has Kami read the book?
motikmotik

Answer:    The answer is:  " 2 " .  

_______________________________________________

        → Kami has read the book "<u>  2 (two)  </u>" times.

_______________________________________________

Step-by-step explanation:

_______________________________________________

Let "J" represent the number of times julia has read the book.

Let "K" represent the number of times Kami has read the book.

J = 6 ;  

J = 3K ;  

Solve for "K" ;

J = 6 = 3K ;

→ 6 = 3K ;

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Divide each side of the equation by "3" ;

to isolate "K"  on one side of the equation; & to solve for "K" :

→  3K / 3  =  6 / 3 ;

to get:

  K = 2 .

_______________________________________________

 The answer is:  " 2 " .

        → Kami has read the book "<u>  2 (two)  </u>" times.

_______________________________________________

8 0
3 years ago
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