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natita [175]
3 years ago
7

The ratio of boys to girls in a class is 3:5. There are 40 students in the class. How many

Mathematics
1 answer:
Law Incorporation [45]3 years ago
5 0

Answer:

There are 25 girls in the class.

Step-by-step explanation:

Number of girls=5x

Number of boys=3x

Number of students in the class= 5x+3x=8x=40

So, x= 40/8=5

Number of girls= 5x=5*5=25

Therefore, there are 25 girls in the class.

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Determine the slope of the line that passes through the points (0, -5) and (-6, 6).
melamori03 [73]

Hello there,


Slope:

6 - (-5) / -6 - 0

11/-6

<em>Slope=</em> -11/6


<em>Slope intercept form: </em>y = mx + b

-5 = -11/6(0) + b

-5 = b


Answer: y = -11/6x - 5


Hope I Helped!

-Char

7 0
3 years ago
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If BC is 1 <br><br> CD is 2<br><br> DA is 3<br><br> AB is 4,<br><br>what is EF?
Iteru [2.4K]

The length of the side EF will be 1 unit, approximately.

The complete figure is attached below.

<h3>What is Geometry?</h3>

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

The figure is given below.

The length of EF will be

EF = CF – CE

Then the value of CF will be

CF = BC × cos 30

CF = 2 × 0.866

CF = 1.732

Then the value of CE will be

CE = BC × cos 42

CE = 1 × 0.743

CE = 0.743

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EF = 1.732 – 0.743

EF = 0.989 ≈ 1

More about the geometry link is given below.

brainly.com/question/7558603

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6 0
2 years ago
Marisa wants to buy a DVD player that runs for at least $150 ..she has already saved $80, and plans to save an additional $10 ea
Natali5045456 [20]
$80 + $10w ≥ $150

$80 she has already saved + $10 dollars she makes every week must at least be $150
8 0
3 years ago
2-3(x+4)=8<br><br> -6<br> 6<br> 2/3<br> -2/3
RideAnS [48]

Answer:

-6

Step-by-step explanation:

2-3x-12=8

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7 0
3 years ago
What is the slope of 1.5x+4.5y=18 ,and how do you know?​
Cerrena [4.2K]

Answer:

m=-1/3

Step-by-step explanation:

The slope of this line is m=-1/3 because if you use the slope-intercept formula, y=mx+b, m is the slope. If you take this equation and plot two points on a line that has this equation, the slope will be negative if the line forms an obtuse angle on the 0 line. In this case, m=-1/3 as the line goes back 1/3 unit for every unit in this equation. Hope it helps!

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3 years ago
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