Answer:
c
Step-by-step explanation:
Since both equations express y in terms of x we can equate the right sides
3x + 5 = - x + 3 ( add x to both sides )
4x + 5 = 3 ( subtract 5 from both sides )
4x = - 2 ( divide both sides by 4 )
x = - 0.5
substitute x = - 0.5 in either of the 2 equations
using y = - x + 3 then y = 0.5 + 3 = 3.5
solution is (- 0.5, 3.5 ) → c
Answer:
Yes! 0 is an integer with no reciprocal.
Step-by-step explanation:
A number's reciprocal is what you can multiply it by to make 1. For example, the reciprocal of 2 is 1/2. 2*1/2 is 1. However, 0 cannot multiply by anything to make 1.
In ∆ABC, AC = 15 centimeters, m B = 68°, and m C = 24°. What is BC to two decimal places?
Answer provided by our tutors
we are given two angles and one side (which is not between the angles)
we find the angle m A by using 'angles of a triangle add to 180°':
m A = 180 - (m B + m C)
m A = 88°
we can find side BC by using The Law of Sines:
BC/sin A = AC/sin B
BC/sin 88° = 15/ sin 68°
BC = 15*sin 88° / sin 68°
BC = 16.19 cm.
Answer:
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Step-by-step explanation: