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3 years ago

Please help need to get to 80%

Mathematics

1 answer:

Shalnov [3]3 years ago

3 0

Answer:

$\frac{1}{6}$

Step-by-step explanation:

First, start by converting 4 feet to inches. Note that 1 foot = 12 inches.

Set up a unit converter:

$4\ ft(\frac{12\ in}{1\ ft})$

The ft cancel out leaving us with:

$4*12\ in=48\ in$

Now, we can set up a scale factor...

$\frac{drawing}{real\ length}=\frac{8}{48}=\frac{1}{6}$

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I've tried to get the answer for this 13 times now (not joking), plzzz help: write a formula that represents the number of peopl

gtnhenbr [62]

Answer:

2820 seats
aₙ = 3n + 9

Step-by-step explanation:

This is an AP with:

The first term a₁ = 12
Common difference d = 3
Number of terms n = 40

Number of the seats:

Sₙ = 1/2*n(a₁ + aₙ) = 1/2n(2a₁ + (n - 1)d)
S₄₀ = 1/2*40(12*2 + 39*3) = 2820 seats

Formula of nth term:

aₙ = a₁ + (n - 1)d
aₙ = 12 + (n - 1)*3 = 12 + 3n - 3 = 3n + 9
aₙ = 3n + 9

6 0

3 years ago

Justin deposited $2,000 into an account 5 years ago. Simple interest was paid on the account. He has just withdrawn $2,876. What

sdas [7]

Answer: $8.76\%$

Step-by-step explanation:

The formula to find the final amount after getting simple interest :

$A=P(1+rt)$ , where P is the principal amount , r is rate of interest ( in decimal )and t is time(years).

Given : Justin deposited $2,000 into an account 5 years ago.

i.e. P = $2,000 and t= 5 years

He has just withdrawn $2,876.

i.e. we assume that A = $2876

Now, Put all the values in the formula , we get

$(2876)=(2000)(1+r(5))\\\\\Rightarrow\ 1+5r=\dfrac{2876}{2000}\\\\\Rightarrow\ 1+5r=1.438\\\\\Righhtarrow\ 5r=0.438\\\\\Rightarrow\ r=\dfrac{0.438}{5}=0.0876$

In percent, $r=0.0876\times100=8.76\%$

hence, He earned $8.76\%$ of interest on account.

6 0

3 years ago

Justin won 20 games, tied 8 games & lost 14. What is Justin's ratio of total games to tied games? Please show how you get th

drek231 [11]

Total games= 20+8+14
=42 games
Fraction of tied games= 8/42
reduce the fraction so that it's 4/21
The ratio would be 4:21

6 0

3 years ago

What fraction of this shape is shaded?

Inessa05 [86]

I think it would be 1/16

3 0

3 years ago

Read 2 more answers

The manager at Gabriela's Furniture Store is trying to figure out how much to charge for a book shelf that just arrived. The boo

Setler [38]

The manager should sale the bookshelf for $235.20

Step-by-step explanation:

Wholesale price of book shelf = $147.00

Mark up = 60% of original price

$Mark\ up=\frac{60}{100}*147.00\\\\ Mark\ up=\frac{8820}{100}\\Mark\ up=\$88.20$

Total = Wholesale price + Mark up

$Total= 147.00+88.20\\Total=\$235.20$

The manager should sale the bookshelf for $235.20

Keywords: mark up, percentage

Learn more about percentages at:

#LearnwithBrainly

5 0

3 years ago