Answer:
Step-by-step explanation:
multiply these -3/7 times by 3/8: Answer is -9/56
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0.19 is 5% of what number.
1 answer:
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Answer:
Step-by-step explanation:
The tunnel, the ground and the depth of the tunnel form a right angle triangle.
The length of the tunnel is the hypotenuse of the right triangle that has been formed.
Let the length of the tunnel be .
Using the sine ratio, we obtain;
The length of the opposite side is
We substitute the given values to obtain;
We cross multiply to obtain;
Therefore the correct answer is C.
Answer:
9-3x-12
9+6x-7-9x-5
(Group liked terms)
9+6x-9x-7-5
( subtract the numbers ) -7-5= -12
9+6x-9x-12
( add similar elements ) 6x-9x=-3x
9-3x-12
Step-by-step explanation:
Answer:
7 + 4
Step-by-step explanation:
note that ×
= a
Given
(2 + )² = (2 +
)(2 +
)
Each term in the second factor is multiplied by each term in the first factor, that is
2(2 + ) +
(2 +
) ← distribute both parenthesis
= 4 + 2 + 2
+ 3 ← collect like terms
= 7 + 4