All categories

2 years ago

How to work out 5-[5+8÷4-1]

Mathematics

2 answers:

NISA [10]2 years ago

8 0

Hey there!

$5 - [5 + \frac{8}{4} - 1] \\ \frac{8}{4} = 2 \\ 5-[5+2 -1] \\ 5+2 = 7 \\ 5 [ 7-1] \\ 7 - 1 = 6 \\ 5 - 6 = -1 \\ Answer: -1$

Good luck on your assignment and enjoy your day!

~ $LoveYourselfFirst:)$

rodikova [14]2 years ago

6 0

PEMDAS (order of operations rules) require that we perform operations in a certain order: anything inside parentheses first, followed by any exponentiation, followed by mult. and div., finally followed by addition and subtraction.

Thus, we must evaluate 5+8÷4-1 first, as it's inside parentheses. Focusing on the division first, we get 5+8÷4-1 = 5 + 2 - 1, or 6.

Then we have 5 - [6], which comes out to -1.

You might be interested in

The initial population of a town is 2600, and it grows with a doubling time of 10 years. Determine how long it will take for the

choli [55]

Answer:

It will take the 20 years for the population to quadruple.

Step-by-step explanation:

Exponential population growth:

An exponential model for population growth has the following model:

$P(t) = P(0)(1+r)^t$

In which P(0) is the initial population and r is the growth rate, as a decimal.

It grows with a doubling time of 10 years.

This means that $P(10) = 2P(0)$ . We use this to find r. So

$P(t) = P(0)(1+r)^t$

$2P(0) = P(0)(1+r)^10$

$(1+r)^10 = 2$

$\sqrt[10]{(1+r)^10} = \sqrt[10]{2}$

$1+r = 2^{\frac{1}{10}}$

$1 + r = 1.0718$

$P(t) = P(0)(1+r)^t$

$P(t) = P(0)(1.0718)^t$

Determine how long it will take for the population to quadruple.

This is t for which P(t) = 4P(0). So

$P(t) = P(0)(1.0718)^t$

$4P(0) = P(0)(1.0718)^t$

$(1.0718)^t = 4$

$\log{(1.0718)^t} = \log{4}$

$t\log{1.0718} = \log{4}$

$t = \frac{\log{4}}{\log{1.0718}}$

$t = 20$

It will take the 20 years for the population to quadruple.

5 0

2 years ago

What’s 7(c+2) if c=9

ddd [48]

Answer:

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

If their food and beverages costs$25.30 and there is an 8% meals tax, how much is the bill

Mashutka [201]

Hey there Unrazed90,

Answer :

100% = $25.30
1% = $25.30 / 100
= $0.253
8% = $0.253 x 8
= $2.024
Total = $25.30 + $2.024
= $27.324
= $27

Hope this helps :D

<em>~Natasha ♥</em>

8 0

3 years ago

The table represents a linear function

Feliz [49]

Answer:

Step-by-step explanation:

.......................

8 0

2 years ago

Read 2 more answers

Gary had a 40% discount for new tires. The sale price of a tire was $96.25. What was the original price of the tire? Round to th

EastWind [94]

If the price after the discount is subtracted is $96.25 then this is what you do

u times 0.40 x 96.25 which is 38.5 so since you are wanting to know what the price was before the discount you would add 38.5 to 96.25 and when you do that your answer is 134.75

but if you are just trying to get the discount from 96.25 you subtract 38.5 from 96.25

8 0

2 years ago