Sup boi i need with this ok

at the county concert the ratio of the number of boys to the number of girls is 2: 7 if there are 250 more girls than boys how many boys are at the concert

i am giveing 13 boi bye

Total number of boys at the concert=100

Step-by-step explanation:

The total number of boys and girls at the concert can be expressed as follows;

Total number of boys (b)=(ratio of boys/total ratio)×total number of boys and girls (t)

where;

Total number of boys=b

ratio of boys=2

total ratio=(2+7)=9

total number of boys and girls=t

replacing;

b=(2/9)×t...equation 1

The total number of girls (g)=Total number of boys (b)+250

g=b+250...equation 2

The value of b in equation 2 is replaced by the value of b in equation 1;

g=(2/9)t+250

And the total number can be expressed as;

Total number (t)=Total number of boys (b)+total number of girls (g)

t=b+g

where;

b=(2/9)t

g=(2/9)t+250

replacing;

t=(2/9)t+(2/9)t+250

t=(4/9)t+250

t-(4/9)t=250

(5/9)t=250

t=250×9/5

t=450

The total number of boys (b)=(2/9)t

replace t with 450

b=(2/9)×450

b=100

Total number of boys at the concert=100

boys

Step-by-step explanation:

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

step-by-step explanation:

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