Answer:
YX = 22
Step-by-step explanation:
Similar triangles. So,
Cross multiplication
45*(x+8) = 30 * (3x - 9)
45x + 360 = 90x - 270
360 = 90x - 270 - 45x
360 = 45x - 270
360 + 270 = 45x
45x = 630
x = 630/45
x = 14
YX = x +8 = 14 + 8 = 22
Answer:
360mm^2
Step-by-step explanation:
Surface area of a square pyramid= Base area + Lateral area
Base area=10mm × 10mm
=100mm^2
Lateral area = (4) × (1/2) × (10) × √(12) ^ 2 + (5) ^ 2)
= 260 mm^2
Surface area= Base area + Lateral area
=100mm^2 + 260mm^2
= 360mm^2
5 1/4 divided by 16.9 is 0.31
Hello!
Let's put this into a system of equations and have a represent the apples and o represent the oranges.
o=2a+2
0.5o-0.5a=4
Since we can already so what o equals (2a+2) we will substitute it into the second equation and solve for a.
0.5(2a+2)-0.5a=4
1a+1-0.5a=4
1.5a+1=4
1.5a=3
a=2
Now that we know the value of a will put a into the first equation to find o.
o=2(2)+2
o=4+2
o=6
There were 6 oranges and 2 apples.
I hope this helps!
