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zubka84 [21]
2 years ago
5

9x = 63 what is x

middle" class="latex-formula">
Mathematics
1 answer:
tankabanditka [31]2 years ago
5 0

Answer:

x = 7

Step-by-step explanation:

Please give me brainliest :)

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What is the value of n in the equation -1.2(2n+4)+6=-9+4(2n+1)
Shalnov [3]

Answer:

n = 6.2/-10.4=0.5962

Step-by-step explanation:

What is the value of n in the equation. we would make n the subject formula -1.2(2n+4)+6=-9+4(2n+1)

Opening the brackets,

-1.2×2n -1.2×4 + 6= -9 +4×2n + 4×1

-2.4n -4.8 +6 = -9 +8n + 4

-2.4n -4.8 +6 = -9 + 4 + 8n= -5+8n

Collecting like terms

-2.4n-8n = -5+4.8-6

-10.4n =-6.2

n = -6.2/-10.4= 0.5962

Let's check, put n= 0.5962 in the equation

-2.4n -4.8 +6 = -9 +8n + 4

Lefthand side

-2.4×0.5962-4.8+6= -0.230

Right hand side

-9+ 8× 0.5962 +4

=-9 +4.7696 +4

=0.230

Right hand side = left hand side

4 0
3 years ago
Read 2 more answers
Question is in the image
pshichka [43]

Answer:

(x +3)^2 + (y -3)^2 = 3^2

Step-by-step explanation:

Your first task is to find the center.

The longest possible line of the circle goes from (-3,0) to (-3,6)

So the center is at the midpoint of these two points.

The midpoint is at (-3 - 3)/2 , (6+ 0)/2 or (-3,3)

That gives you the center of the circle.

So far what you have is

(x +3)^2 + (y -3)^2 = r^2

Now the distance of the center to the bottom point is (-3,3) to (-3,0)

r^2 = (x2 - x1)^2 + (y2 - y1)^2

x2 = - 3

x1 = - 3

y2 = 3

y1 = 0

r^2 = (-3 - -3)^2 + (3 - 0)^2

r^2 = 3^2

The entire answer is

(x +3)^2 + (y -3)^2 = 3^2

8 0
2 years ago
I am a number between 20 and 30. I am not divisible by 6. and the sum of my factors is 31. What number am I?
Soloha48 [4]
The answer to the question is 25.
5 0
3 years ago
Someone please help, 100 points.
Over [174]
Part 1
Let:
y be the total cost
x be the number of tickets
a be fair admission

Since the fair charges $1.25 per ticket, the equation of the line would look like:

y = 1.25x + a

Since Johnny spent $43.75 and bought 25 tickets, we find a by replacing y with 43.75 and x with 25:

43.75 = 1.25×25 + a

Now solve for a

43.75 = 31.25 + a
43.75 - 31.25 = a
a = 12.50

Going back to the first equation:

y = 1.25x + 12.50


Part 2:
a) Let (9,8) be (x1,y1) and (4,-12) be (x2,y2)
The formula for slope is:
m =  \frac{y2 - y1}{x2 - x1}  \\ m =  \frac{ - 12 - 8}{4 - 9}  \\ m =  \frac{ - 20}{ - 5}  \\ m = 4
b) For the point-slope equation, I'll use (9,8)
Using the formula:
y - y1 = m(x - x1) \\ y - 8 = 4(x - 9)
c) For the slope-intercept form, we solve for y in the point-slope formula:
y - 8 = 4(x - 9) \\ y = 4x - 36 + 8 \\ y = 4x - 28
5 0
3 years ago
Two lines or equations are described in each part. Decide whether each system has one solution, no solution, or infinitely many
Vedmedyk [2.9K]
It has no solution bc there or no point and because its not the same line 
7 0
3 years ago
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