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2 years ago

(2.5 times 10^-10) (7 times 10^-6)

Mathematics

2 answers:

Dmitry_Shevchenko [17]2 years ago

6 0

Answer:

1.75×10^−15

Step-by-step explanation:

elena-14-01-66 [18.8K]2 years ago

3 0

Answer: 1.75e - 15

Step-by-step explanation:

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HELP...Plz.....Thanks..... :)

Lynna [10]

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A ladder leans against a building that angle of elevation of the latter is 70° the top of the ladder is 25 feet from the ground.

VashaNatasha [74]

Answer:

a. 20.5

Step-by-step explanation:

because this will form a right triangle we can use tan (opposite over adjacent) so an equation we could set up would be tan(70)=25/x

therefore we can just solve the equation which would give us 20.45. so if we round it the answer would be a

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What is equivalent to 2x-7(6)

trasher [3.6K]

-40 i think.............. im not positive but i did my best

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2 years ago

olga nikolaevna [1]

Answer:

Fraction of the original board left = $\frac{2}{15}$

Step-by-step explanation:

Let the length of the board is = l feet

Marty saws off $\frac{1}{5}$ of a wooden board.

Length of the board left = l - $(\frac{1}{5})l$

= $(\frac{4}{5})l$ feet

He saws off $\frac{3}{4}th$ of the remaining board,

Board left = $(\frac{4}{5})l-[(\frac{4}{5})l\times (\frac{3}{4})]$

= $\frac{4}{5}l-\frac{3}{5}l$

= $\frac{1}{5}l$ feet

He finally saws off $\frac{1}{3}$ rd of the remaining board.

Board left = $\frac{1}{5}l-[\frac{1}{5}\times \frac{1}{3}]l$

= $(\frac{1}{5}-\frac{1}{15})l$

= $\frac{2}{15}l$ feet

Fraction of the original board left = $\frac{\frac{2}{15}l}{l}$

= $\frac{2}{15}$

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2 years ago

Which of the following has a solution set of {x | x = 0}?

Oliga [24]

Middle option.

(x + 1 ≤ 1) ∩ (x + 1 ≥ 1)

If you work both sides separately you get

(x ≤ 0) ∩ (x ≥ 0)

which reduces nicely to

{x | x = 0}

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2 years ago

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