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balu736 [363]
3 years ago
11

Please help me answer these questions!

Mathematics
2 answers:
sattari [20]3 years ago
7 0
The answer for 15 is 5/6
lesantik [10]3 years ago
7 0
13. 1 inch 
14. 6/16
15.7/9

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Fastest way to solve this? NOT LOOKING FOR THE ANSWER with logical explanation please about how to solve it.
White raven [17]

Answer:

Distance of Tunnel is 500 meters + Train travel rate is 20 meters per second = 25 seconds to pass through the tunnel only therefore the outstanding balance of 35 seconds x 20 meters per second =600 meters Train

Step-by-step explanation:

Total of length of train 600 meters and tunnel (500 meters) is 1,200 meters +30 seconds = TR of 20 meters per second

7 0
2 years ago
The formula for the area of a triangle is . What is the length of the base, b, of a triangle with an area, A, of 110 m2 and a he
vodka [1.7K]

Answer:

b = 22 m

Step-by-step explanation:

The formula for calculating the area (A) of a triangle is

A = \frac{1}{2} bh

multiply both sides by 2 to eliminate the fraction

2A = bh ( divide both sides by h )

b = \frac{2A}{h}, hence

b = \frac{2(110)}{10} = \frac{220}{10} = 22 m


7 0
3 years ago
What is the equation of the line that passes through the point (-5,2 ) and has the slope of -2/5
valina [46]

Answer:

y = -2/5x + 2

Step-by-step explanation:

8 0
3 years ago
9(x +1) +{2y(z -1)}/2<br> Solve for y<br><br> How do you do this? I’m confused
Nezavi [6.7K]
Answer
If only {2y(z-1)} is being divided by two:

9x+9+yz-y

If whole equation is divided by two:

9x+9+2yz-2y over 2

Explanation: In the first instance, you can cancel out the 2 in the numerator and denominator, which leaves you 9(x+1) + {y(z-1)}. You can then simplify to get 9x+9+yz-y

In the second instance, you distribute 9 to what is inside the parentheses, and get 9x+1. You then distribute 2y to what is inside the parentheses within the brackets and get 2yz-2y. You are then left with 9x+9+2yz-2y over 2

8 0
3 years ago
An algebraic expression with 2 variables x+-y
atroni [7]

Answer:

-2y+4x

Step-by-step explanation:

Does this work? Lemme know if you need more

8 0
3 years ago
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