Answer:
8x
Step-by-step explanation:
at least thats waht i think it is
Answer:
X would most likely be 10
Step-by-step explanation:
Isolate one variable in the system of equations. Use substitution to create a one-variable equation. Then, set the quadratic equation equal to zero and find the discriminant. If the discriminant is negative, then there are no real number solutions. If the discriminant is zero, then there is one real number solution. If the discriminant is positive, then there are two real number solutions.
<em>Answer:</em>
<em>Submarine submerges at the rate of =5m/min
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<em>descend starts from = 20m
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<em>submarine have to reach = -250m
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<em>Distance between above sea level to below sea level = 250 + 20 = 270m
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<em>time taken to reach 270 m = 270/5= 54 minutes
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<em>Step-by-step explanation:</em>
<em>Hope this helps:)</em>
Answer:
SU = 70
Step-by-step explanation:
First, we need to find the value of x. Since M is the midpoint of SU, that means that SM = MU, therefore:
x + 15 = 4x - 45
15 = 3x - 45
60 = 3x
x = 20
We know that SU = SM + MU = (x + 15) + (4x - 45) = 5x - 30 and that x = 20 so SU = 5x - 30 = 5 * 20 - 30 = 100 - 30 = 70.