Answer:
t=-105
Step-by-step explanation:

What we need to do here is to isolate t.
Let's multiply both sides by -15.

7*-15= -105
t=-105
Answer:
The score is 66
Step-by-step explanation:
Say the unknown score is x
Average = Total score/no of occurrence
78 = (x + 76 + 74 + 76 + 80 + 83 + 91)/7
78 × 7 = x + 76 + 74 + 76 + 80 + 83 + 91
546 = x + 480
546 - 480 = x
66 = x
∴ x = 66
Answer:
x = 4
Step-by-step explanation:

Answer:
Step-by-step explanation:
The height of the television is 40 inches and the length is 71.5 inches.
Part A
The part of the right angle triangle that you have been given are the legs which are also the opposite and adjacent sides. You are looking for the hypotenuse
Part B
The Pythagorean theorem is expressed as
Hypotenuse² = opposite side² + adjacent side²
The equation becomes
Hypotenuse² = 40² + 71.5²
Part C
Length ² = 1600 + 5112.25
Length ² = 6712.25
Length = √6712.25
Length = 81.9 inches
Part D
The size of the television is 82 inches