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3 years ago

Sion 5(7 - 4)2 + 3+ 11.

Mathematics

1 answer:

netineya [11]3 years ago

3 0

Answer:

Step-by-step explanation:

use the order of operations

5 (3) 2 + 3 + 11. solve within parenthesis

15 × 2 + 3 + 11. multiply left to right

30 + 3 + 11. multiply left to right

33 + 11. add left to right

44. add

the order of operations is more commonly known as PEMDAS.

(parenthesis, exponents, multiply and divide, add and subtract)

If you are still confused there is a Brain Pop about PEMDAS. just search "order of operations" on the brain pop website

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A radio-controlled helicopter sells for $20, but needs a lithium battery that costs 25% of that price. A sales tax of 6% will be

Diano4ka-milaya [45]

Answer:

The total cost of the helicopter = $26.5

The cost of lithium battery = $5.

The amount of sales tax = $1.5

Step-by-step explanation:

We have been given that a radio-controlled helicopter sells for $20, but needs a lithium battery that costs 25% of that price.

We can find the price of battery by finding 25% of 20.

$\text{The cost of lithium battery}=\frac{25}{100}\times 20$

$\text{The cost of lithium battery}=\frac{25}{5}$

$\text{The cost of lithium battery}=5$

Therefore, the cost of lithium battery is $5.

Now let us find the sales tax on the cost of helicopter and lithium battery.

$\text{Total sales tax}=\frac{6}{100}\times (20+5)$

$\text{Total sales tax}=0.06\times (25)$

$\text{Total sales tax}=1.5$

Therefore, the total sales tax will be $1.5.

We can find the total cost of helicopter by adding the cost of helicopter, cost of lithium battery and total amount of sales tax.

$\text{The total cost of helicopter}=20+5+1.5$

$\text{The total cost of helicopter}=26.5$

Therefore, the total cost of helicopter will be $26.5.

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3 years ago

In a certain country, the true probability of a baby being a girlgirl is 0.4810.481. among the next sixsix randomly selected bi

Ilia_Sergeevich [38]

Probability of the next six babies being a girl = (0.4810)^6 = 0.0124

Therefore probability of at least one boy in next six births = 1 - 0.0124

= 0.9876 Answer

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3 years ago

WILL GIVE BRAINLIEST 2 hours x 47 mph please show work for brainliest

gtnhenbr [62]

Answer:

2 hours * (47 miles / hour) = 94 miles

multiply the value in miles per hour by the conversion factor '1.609344'.

So, 2.2 miles per hour = 2.2 × 1.609344 = 3.5405568 kilometers per hour.

Step-by-step explanation:

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3 years ago

Jill traveled to Canada and bought a new lamp for $460 Canadian dollars. In U.S. dollars (to the nearest cent) this is equivalen

Stels [109]

This is approx $400 in US dollars when comparing 460 Canadian dollars<span />

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3 years ago

Read 2 more answers

Jackson hate about 8,351 calories worth of food in a week. About how many calories worth of food does he eat every day?

lawyer [7]

Answer:1193 calories

Step-by-step explanation:

First you divide 8351 by 7 since there are 7 days in a week. You get 1193

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3 years ago