2 years ago

Helppp i literally dont understand this at all

Mathematics

1 answer:

Ksju [112]2 years ago

3 0

Answer:

D. Substitution

Step-by-step explanation:

I don't know how to explain it other than that they substituted the 50° angle into the original equation.

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in a wood there are 420 silver birch trees, 160 oak tees and 300 wild cherry trees. what is the percentage of the oak trees give

elena-14-01-66 [18.8K]

Answer:

18.2%

Step-by-step explanation:

The total number of trees in the wood = 420 + 160 + 300

= 880 trees

∴ The percentage of the oak trees = $\frac{160}{880} * \frac{100}{1}$

= $\frac{2 * 100}{11}$ %

= $\frac{200}{11}$ %

= 18.181818...%

In 1 decimal place = 18.2%

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3 years ago

Simplify 14 +{ -2 + 3 [ 1 +3 ( -6 -2 ) ] }

gregori [183]

ANSWER: -57
14+{−2+3[1+3(−6−2)]}
= 14+{−2+3[1+3(-8)]}
= 14+{−2+3[1+(-24)]}
= 14+{−2+3[1-24]}
= 14+{−2+3[-23]}
= 14+{−2+[-69]}
= 14+{−2-69}
= 14+(-71)
= 14 - 71
= -57

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2 years ago

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morpeh [17]

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