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Ivenika [448]
3 years ago
6

The ratio boy to girl in me.baker social studie class is 2 to 3 if there are 30 total students in class how many girls are in th

e class than boy
Mathematics
1 answer:
julia-pushkina [17]3 years ago
6 0

well we can set up this proportion.

2 boys

---------

3 girls

Now lets add this together to equal a smaller proportion class.

2 boys + 3 girls = 5 students.

We need for their to be 30 students.

So what number can we multiply them by to get 30 students in all when added.

Well we can divide 30 ÷ 5 = 6

so multiply each number.

2 boys x 6 = 12

3 girls x 6 = 18

these two numbers add up to 30 and when this fraction is simplified it is 2/3

So your finally answer is....

12 boys and 18 girls.

Good Luck! :)

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What is 6(x+3)=2(2x+5)
koban [17]

Answer:

x = -4 ;

Step-by-step explanation:

6(x+3)=2(2x+5)

Distribution

6x+18 = 4x + 10

Subtract 4x on both sides

2x+18 = 10

Subtract 18 on both sides

2x = -8

Divided by 2

x = -4

Now if we have to substitute the value of X

6(-4+3)=2(-8+5)

Parenthesis first

6(-1) = 2(-3)

-6 = -6

7 0
3 years ago
The area of triangle ABC is _____.
Marizza181 [45]
I FOUND YOUR COMPLETE QUESTION IN OTHER SOURCES.
 
SEE ATTACHED IMAGE.
 
Using Heron's Formula we can find the area of the triangle.
 A = root (s (s-a) * (s-b) * (s-c))
 s = (a + b + c) / 2
 Where,
 s: semi-perimeter
 a, b, c: sides of the triangle
 Substituting values:
 s = (15 + 16 + 20) / 2
 s = 25.5
 s = 26
 The area will be:
 A = root (26 * (26-15) * (26-16) * (26-20))
 A = 130.9961832
 A = 130 u ^ 2
 Answer:
 
The area of triangle ABC is:
 
C.
 
130 u ^ 2

5 0
3 years ago
Can someone help me with this problem please
Makovka662 [10]

Answer:

Circumference=2πr or πd

So:

3.14 × 6cm

=18.84cm

6 0
2 years ago
Can someone answer this please
Nana76 [90]
Area is trapezium =
A=1/2h(a+b)

84=1/2(6)(7+b)

84=3(7+b)

84=21+3b

3b=84-21

B=63/3

B= 21 cm

I’m sorry if my answer turned out to be wrong but I tried my best so best of luck !!
6 0
2 years ago
Read 2 more answers
Hey anybody plz help me <br><br><br><br><br><br><br> thanks
natita [175]

Answer:

D or 11/12

Step-by-step explanation:

5/8 + 3/4 / -2/3 - 5/6

= 11/8 / -9/6

= 66/72

= 22/24

= 11/12

6 0
2 years ago
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