Exercise 4.
a) Since Profit (P) is (equal to) Revenue (R) minus Expenses (E) we can write P = R - E and we know that E = $10 million. So P = R - 10
b) appling the fomula written above, we put P = 25 - 10 = $15 million
c) Let's use the inverse formula. From P = R - E we need R, so move R to the left of equal with changed sign and move P to the right of equal with changed sign. We get - R = - P - E so, make it positive... R = P + E
R = 10 + 5 = $15 million
Exercise 5
a) substitute 15 to x... 3.5 * 15 = y
y = 52.5
b) substitute 144 to y
3.5x = 144 and divide both for 3.5 to find x
3.5x/3.5 = 144/3.5 -> x = 144/3.5 circa 41.1
Exercise 6
a) z = -12 * (-7) -> z = 84
b) 108 = -12x -> 12x = -108 -> 12x/12 = -108/12 -> x = -9
Exercise 7
a) y = 15.3 * (-13) -> y = 198.9
b) 15.3x = 351.9 -> 15.3x/15.3 = 351.9/15.3 -> x = 23
Exercise 8
a) y = -11 + 5 -> y = -6
b) 17 = x + 5 -> - x = -17 + 5 -> x = 17 - 5 -> x = 12
Answer:
So, we know that the internal angles of a triangle add up to 180 degrees, yes?
60 degrees plus 50 degrees equals 110 degrees, and subtract 110 from 180, and you get 70 degrees for angle y.
Now, if the triangles are congruent (identical) and the shape you are describing is like an hourglass, then because of the vertical angles theorem, angle x should be 70 degrees too!
Hope I helped!! :)
Answer:
Total walk she did around the pool every morning = 141.3
Step-by-step explanation:
Given - Kriti has a circular swimming pool in her house. The radius of the swimming pool is 22.5 cm. She walks one round every morning before diving in the pool.
To find - How far does she walk around the pool every morning?
Proof -
Given that, the swimming pool is circular in shape.
So,
1 round of circle = Circumference of circle.
As we know that,
Circumference = 
= 
= 141.3
∴ we get
Total walk she did around the pool every morning = 141.3
Answer:
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Answer:
Step-by-step explanation:
Side c = AB can be found using the Pythagorean theorem:
c² = a² + b² = 8² +5² = 89
c = √89 ≈ 9.43
__
Angle B is the complement of angle A, so is ...
B = 90° -A = 90° -58° = 32°
c is approximately 9.43; the measure of angle B is 32°.
