Answer:
31
Step-by-step explanation:
Depth Changes:
1. down 25 feet
2. down 10 feet
3. up 7 feet
4. down 3 feet
Answer:
The first three terms is 64, 32, 16
Step-by-step explanation:
Given
Number of participants = 64
Decrement = 1/2
Required
Find the first three terms
To calculate the first three terms, we make use of the following formula;
Current Term = Previous Term - 1/2 * Previous Term
The first term = Initial number of participants
First Term = 64
Second Term = First Term - 1/2 * First Term
Second Term = 64 - 1/2 * 64
Second Term = 64 - 32
Second Term = 32
Third Term = Second Term - 1/2 * Second Term
Third Term = 32 - 1/2 * 32
Third Term = 32 - 16
Third Term = 16
Hence, the first three terms is 64, 32, 16
The formula of cylinder: 兀r^2×altitude
Take 兀 as 3.14
In this case,the equation will be:
兀1.5^2×3.5
=2.25兀×3.5
=7.875(3.14)
=24.7275
≈24.74
Thus the answer is B.24.74 m3.
hope it helps!
Answer:
<em>Multiply the bottom equation by -3/2 then add the equations.
</em>
<em>Multiply the top equation by-3. then add the equations
</em>
<em>
</em>
Step-by-step explanation:
Given the simultaneous equation
2x- 6y=6 ... 1
6x - 4y = 2 ... 2
To eliminate a variable, we have to make the coefficient of one of the variable to be the same.
Multiply equastion 1 by -3
-6x+18y= -18
6x - 4y = 2
Add the result:
-6x + 6x + 18y-4y = -18+2
18y-4y = -18+2
14y = -18
y = -9/7
Another way is to Multiply the bottom equation by -3/2 then add the equations.
Multiplying equation 2 by -3/2 will give;
6x(-3/2) - 4y(-3/2) = 2(-3/2)
-9x + 6y = -3
Add to equation 1;
2x- 6y=6
-9x + 2x + 0 = -3+6
-7x = 3
x = -3/7
Hence the correct two options are;
<em>Multiply the bottom equation by -3/2 then add the equations.
</em>
<em>Multiply the top equation by-3. then add the equations
</em>
<em>
</em>
<em></em>
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