Answer:
1 calculator cost £12
120 divided by 10 = 12
now 8 x 12 = £96
8 calculators cost £96
Step-by-step explanation:
Answer:
A = 45
B = 90
C = 45
Step-by-step explanation:
Isosceles triangles have two side that are the same and two angles that are the same. Since one angle, B, is a right angle, 90°, that means the other 2 angles, A & C, added together equal 90°.
Divide 90 by 2 and you 45° for both A and C.
Answer:
y=3
Step-by-step explanation:
<span>D = 180 * (n -2)
D = 180n -360
180n = D +360
n = (D / 180) + 2
So, the answer is "A"
And we can test this with a square, sum of angles = 360
n = (D / 180) +2
n = (360 / 180) +2
number of sides = 4
correct
Source:
http://www.1728.org/polygon.htm
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Step-by-step explanation:
Use the distance formula:
d² = (x₂ − x₁)² + (y₂ − y₁)²
d² = (-3 − -12)² + (-8 − -11)²
d² = 9² + 3²
d² = 90
d = 3√10
