10 I think cause if they have 13 in total & ask for 3 then 13-3=10
Answer:
b. 1:3
Step-by-step explanation:
To find the hypotenuse of the first triangle, use a^2 + b^2 = c^2
c = sqrt (5^2 + 12^2)
c = 13
From here, since they are similar, you can set up a proportion
13:39
1:3
Answer:
1350 mm²
Step-by-step explanation:
The area of each square face is the square of the edge length:
... face area = (15 mm)² = 225 mm²
There are 6 square faces on a cube, to the total surface area is 6 times that of one face:
... cube area = 6 × face area = 6×225 mm² = 1350 mm²
Answer:
B. (2, 7)
Step-by-step explanation:
(1) 5x + 3y = 31
(2) 2x + 3y = 25 Subtract (2) from (1)
3x = 6 Divide each side by 3
x = 2 Substitute in (2)
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4 + 3y = 25 Subtract 4 from each side
3y = 21 Divide each side by 3
y = 7
The solution is (2, 7).
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<em>Check:
</em>
(1) 5×2 + 3×7 = 31
10 + 21 = 31
31 = 31
(2) 2×2 + 3×7 = 25
4 + 21 = 25
25 = 25
Answer:
7/3
Step-by-step explanation:
(7-0)/(9-6)