Answer:
Acute and isosceles
Step-by-step explanation:
Acute triangle because with all sides equal, all the angles are acute
Isosceles triangles have (at least) 2 equal sides. This is actually an equilateral triangle, where all 3 are equal. A scalene triangle has 3 unequal sides.
38 is the correct answer because 80-4=76 then divide that by 76/2 give you 38
X - the unit
3x; 4x; 5x - the lengths of the sides
3x + 4x + 5x = 30
12x = 30 |:12
x = 2.5
3x = 3 · 2.5 = 7.5 cm
4x = 4 · 2.5 = 10 cm
5x = 5 · 2.5 = 12.5 cm
An Easy Way to do this is to write out the sample space.
5 10
5 25
10 5
10 25
25 5
25 10
Then, check which ones, add to over 20
5 25
10 25
25 5
25 10
Therefore, it's 4/6 or 2/3
Answer:
53, 55, 57, and 59
Step-by-step explanation:
Let the numbers be
x, x +2, x +4, and x+6. Then
x + x+2 + x +4 + x + 6 = 224 Combine like terms
4x + 12 = 224 Subtract 12 from each side
4x = 212 Divide each side by 4
x = 53
The four consecutive integers are 53, 55, 57, and 59.
<em>Check:
</em>
53 + 55 + 57 + 59 =224
