1 : 15 - scale
150 / 15 x 1 = 10
120 / 15 x 1 = 8
Dimensions of the drawings = 10 by 8
Answer:
100 red bricks
Step-by-step explanation:
Let's say red bricks is equal to 5x
Gray bricks is equal to 2x
We have an equation
2x + 5x = 140
= 7x = 140
Divide through by 7 to get the value of x
X = 140/7
X = 20
Red bricks = 5(x)
= 5(20)
= 100
Gray bricks = 2(x)
= 2(20)
= 40
Therefore in conclusion the number of red bricks is 100.
28 divided by 4 = 7
so do 7 * 5 which is 35 so they make 35 cookies in 5 seconds
solve for y by subtracting 3x from each side
-4y = -3x+8
divide by -4
y = 3/4 x -2
Answer:
x = 28
m∠ACD = 68°
Step-by-step explanation:
∠BAE ≅∠DAC because they are vertical angles
∠ACD = 180 - 124 = 56°
to find 'x': 56 + 2x + (180 - 4x) = 180
236 - 2x = 180
-2x = -56
x = 28
m∠ACD = 180 - 4(28) = 180 - 112 = 68°
