There are 90 teenage girls in the concert hall.
2/5 x 600 = 240
3/8 x 240 = 90
Answer:
1 cupcake = $3.75
1 ice-cream = $4.50
1 doughnut = $1.50
Step-by-step explanation:
2 ice-cream + 1 cup cake = $12.75 ------------ [ 1 ]
1 ice-cream + 2 doughnuts = $7.50 ------------ [ 2 ]
1 cup cake + 1 doughnut + 1 ice-cream = $9.75 ------------ [ 3 ]
From [ 1 ] :
2 ice-cream + 1 cup cake = $12.75
1 cupcake = $12.75 - 2 ice-cream
Substitute [ 1 ] into [ 3 ]:
1 cup cake + 1 doughnut + 1 ice-cream = $9.75
$12.75 - 2 ice-cream + 1 doughnut + 1 ice-cream = $9.75
1 doughnut - 1 ice-cream = -$3 ------------ [ 4 ]
[ 2 ] + [ 4 ] :
3 doughnuts = $4.75
1 doughnut = $1.50
Substitute (1 doughnut = $1.50) into [ 2] :
1 ice-cream + 2 doughnuts = $7.50
1 ice-cream + 2 x $1.50 = $7.50
1 ice-cream + $3 = $7.50
1 ice-cream = $4.50
Substitute (1 ice-cream = $4.50) into [ 1 ]:
2 ice-cream + 1 cup cake = $12.75
2 x $4.50 + 1 cup cake = $12.75
1 cupcake = $12.75 - $9
1 cupcake = $3.75
Step-by-step explanation:
Let width be x
according to question
length = 2x-4
perimeter = 58
now,
perimeter = 2(length + width)
58 = 2(x+2x-4)
58 = 6x-8
6x = 66
x = 11
putting value of x in length
2x-4
= 2 X 11 -5
= 18
hence the dimensions of the rectangle is 18 and 11
Answer:
options?
Step-by-step explanation:
gib options
The x-intercept of -2 gives us an idea that point (-2,0) if found along the line. The y-intercept of -1, tells us that point (0,-1), this also tells us that b = -1.
Now that we have two points, we can solve for slope m
Now that we have both m and b. Substitute these values to the slope intercept form
