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4 years ago

Which shows the expression below simplified?

Mathematics

1 answer:

salantis [7]4 years ago

7 0

Answer:

Step-by-step explanation:

(7 × 10-7) × 0.06

7 × 0.06 × 10^-7

0.42 × 10^-7

4.2 × 10^-8

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A $280 suit is marked down by 30%. Find the sale price.<br> The sale price is $

storchak [24]

Answer:

Step-by-step explanation:

30% * $280

$\frac{}{100}$

= 84

So, the sale price is $84

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3 years ago

Read 2 more answers

Help please due today.

BARSIC [14]

Answer:

A) $\frac{7}{tan55^\circ}$

Step-by-step explanation:

$tan\theta=\frac{opposite}{adjacent}\\ \\tan55^\circ=\frac{7}{BC}\\ \\BC*tan55^\circ=7\\\\BC=\frac{7}{tan55^\circ}$

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3 years ago

8 = 4x + 12 what does x equal

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X = -1. 8 = 4x+12
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3 years ago

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In a symphony orchestra, there are 2 vacancies for cellists only, 4 vacancies for violinists only and 4 vacancies for any of the

matrenka [14]

Answer:

123480

Step-by-step explanation:

We have to choose:

2 cellists from 8 cellists;
4 violonists from 7 violonists;
4 cellists or violonists from 9 remaining musicians (8-2=6 - cellists left, 7-4=3 - violonists left, 6+3=9 - left musicians in total)

1. 2 cellists from 8 can be chosen in

$C_8^2=\dfrac{8!}{2!(8-2)!}=\dfrac{8!}{2!6!}=\dfrac{6!\cdot 7\cdot 8}{2\cdot 6!}=28$

different ways.

2. 4 violonists from 7 can be chosen in

$C_7^4=\dfrac{7!}{4!(7-4)!}=\dfrac{7!}{4!3!}=\dfrac{4!\cdot 5\cdot 6\cdot 7}{4!\cdot 2\cdot 3}=35$

different ways.

3. 4 musicians from 9 can be chosen in

$C_9^4=\dfrac{9!}{4!(9-4)!}=\dfrac{9!}{4!5!}=\dfrac{5!\cdot 6\cdot 7\cdot 8\cdot 9}{5!\cdot 2\cdot 3\cdot 4}=126$

different ways.

In total, there are $28\cdot 35\cdot 126=123480$ differnt ways to fill all vacancies.

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3 years ago

Maryanne is making roast chicken for dinner. It takes 2 1/2 hours to cook. She plans to eat dinner at 6:00pm. At what time shoul

satela [25.4K]

Answer:

3:30

Step-by-step explanation:

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3 years ago