Answer:
5 mph
Step-by-step explanation:
c+15+c=2c+15 mph going down stream.
2.4(2c+15)=60
4.8c+36=60
4.8c=24
a). Area = 54 square units
b). Perimeter = 33.7 units
Vertices of the triangle ABC are A(-4, -2), B(1, 7) and C(8, -2).
(a). Area of the triangle ABC = (Absolute value)
By substituting the values from the given vertices,
Area =
=
= (-54) unit²
Therefore, absolute value of the area = 54 square units
(b). Distance between two vertices (a, b) and (c, d)
d =
AB =
= 10.295 units
BC =
= 11.402 units
AC =
= 12 units
Perimeter of the triangle = AB + BC + AC = 10.295 + 11.402 + 12
= 33.697
≈ 33.7 units
-5/7 + x = -1
(-5+7x)/7 = -1
-5 + 7x = -7
7x = -2
please change the digit as per ur QUESTION
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