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GaryK [48]
3 years ago
7

Fifteen more than half a number is 9?

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
6 0
That in algebraic form would be \frac{1}{2}n + 15 = 9

Subtract 15 to both sids and you get
\frac{1}{2}n = -6

Multiply 2 on both sides and you get
n = -12
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there are 270 at Colfax Middle School, where the ratio of boys to girls is 5:4. there are 180 students at Winthrop Middle School
ruslelena [56]

Colfax:

Add the ratio numbers together:

5 + 4 = 9

Divide total students by that:

270 / 9 = 30

Multiply each ratio by 30:

Boys = 30 *5 = 150

Girls = 30 * 4 = 120


Do the same for Winthrop:

4 +5 = 9

180 /9 = 20

Boys = 20 * 4 = 80

Girls = 20 * 5 = 100


Total students = 270 + 180 = 450

Total Girls = 120 + 100 = 220


Fraction that are girls = 220 / 450 which reduces to 22/45

4 0
3 years ago
Will give brainliest mark plz helpp urgenttt easyy
Finger [1]

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

- 4x + 3y = 12 ( add 4x to both sides )

3y = 4x + 12 ( divide the terms by 3 )

y = \frac{4}{3} x + 4 ← in slope- intercept form

with slope m = \frac{4}{3} and y- intercept c = 4

---------------------------------------------------

Given

- 5x + 3y = - 9 ( add 5x to both sides )

3y = 5x - 9 ( divide the terms by 3 )

y = \frac{5}{3} x - 3 ← in slope- intercept form

with slope m = \frac{5}{3} and y- intercept c = - 3

8 0
3 years ago
Please help equation below
qaws [65]

Answer:

3y √21 + 2 y√15

Step-by-step explanation:

To simply, we open up the bracket

We have this as;

√(189y^2) + √60y

= 3y √21 + 2 y√15

7 0
2 years ago
Defined as bounded by two distinct end points that contain every point on the line between its end points.
Alja [10]
This would be the term referred to as a line segment. I hope this helps!
8 0
3 years ago
Read 2 more answers
What is the y-intercept of 2g(x)+3x=6?
umka21 [38]

The y-intercept is basically the value of the output of the function, g(x), when x=0.

Let's replace g(x) with the variable y to make this look a bit simpler.

2y + 3x = 6

Now, we enter the value of x=0 to get the y-intercept.

2y + 0 = 6

2y = 6

Divide both sides by 2

y = 3

The value of y is 3. Now enter the values of x=0 and y=3 into point-form (x,y) to get (0,3). You should know which answer choice to choose now.

Have an awesome day!

8 0
3 years ago
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