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3 years ago

3x + 7 = 25 how much it is

Mathematics

2 answers:

Zinaida [17]3 years ago

6 0

Answer:

Step-by-step explanation:

3x+7=25

We need too first make both sides even.

Subtract 7 from both sides first

3x+7=25(-7)

3x=18

Now divide to isolate x

3x=18/3

x=6

Alexxandr [17]3 years ago

3 0

Answer:

x = 6

Step-by-step explanation:

$3x+7=25\\3x=25-7\\3x=18\\x=\frac{18}{3}\\ x=6$

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bazaltina [42]

Answer:

x=17

Step-by-step explanation:

5 0

3 years ago

If the zeroes of a quadratic function, G, are 4 and -2, what is the equation of the axis of symmetry of G

MAVERICK [17]

9514 1404 393

Answer:

x = 1

Step-by-step explanation:

The axis of symmetry is the vertical line halfway between the zeros.

x = (4 -2)/2

x = 1 . . . equation of axis of symmetry

4 0

3 years ago

Which equation represents the circle described? (in picture)

Sedaia [141]

You are right. In circle equation we have =r² so the correct answer will be C od D. But we have to calculate the center of a circle.

$x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24$

Complete the square:

$x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2$

And we have:

$(x^2-8x)+(y^2-6y)=-24\\\\(x^2-8x+4^2)-4^2+(y^2-6y+3^2)-3^2=-24\\\\
(x-4)^2+(y-3)^2-16-9=-24\\\\(x-4)^2+(y-3)^2-25=-24\quad|+25\\\\\boxed{(x-4)^2+(y-3)^2=1}$

So the answer is C (the same left side of equation).

6 0

4 years ago

Round 14,620 to the nearest ten thousand

DanielleElmas [232]

The ten thousandth number in 14,620 is 1

the number to the right of 1 is 4

4>5

The answer is 10,000

5 0

3 years ago

Solve the problem please

Molodets [167]

Answer:

x = 9±sqrt(7)

Step-by-step explanation:

3(x-9)^2 =21

Divide each side by 3

3/3(x-9)^2 =21/3

(x-9)^2 =7

Take the square root of each side

sqrt((x-9)^2) =±sqrt(7)

x-9 =±sqrt(7)

Add 9 to each side

x = 9±sqrt(7)

4 0

3 years ago

3x + 7 = 25 how much it is​

3x + 7 = 25 how much it is