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4 years ago

100 is 20% of what number?

Mathematics

1 answer:

Rus_ich [418]4 years ago

8 0

Answer:

500

20%=100

100%= 5×100=500 (cause 100 is 20%, and in 100% is five 20% so...)

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P and Q are points on the line y= 2 -4x complete the coordinates of P and Q, P(0, ) Q( ,0)

docker41 [41]

(d): y=2-4x
P(0;y) belongs to (d)
=> y=2-4*0
= 2
So P(0;2)
Q(x;0) belongs to (d)
=> 0=2-4*x
<=> x=1/2
So Q(1/2;0)

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4 years ago

Whoever answers this God Bless You!!!

Illusion [34]

Answer:

Plz as i have exams

Step-by-step explanation:

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3 years ago

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3 years ago

Write an equation that represents a relationship between the independent and dependent quantities from the table. Identify the r

swat32

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2 years ago

Ryan bought a new computer for $2,100. The value of the computer decreases by 50% each year. When will the

noname [10]

Answer:

After 2.80 years the price drops to 300 $

Step-by-step explanation:

Ryan bought a new computer for $2,100.

Price of computer = 2100 $

The value of the computer decreases by 50% each year.

Let p(n) be the price of computer after n years.

$\texttt{Price of computer after 1 year =}2100-\frac{50}{100}\times 2100=0.50^1\times 2100\$\\\\\texttt{Price of computer after 2 years =}0.50^2\times 2100\$\\\\\texttt{Price of computer after 3 years =}0.50^3\times 2100\$\\\\\texttt{Price of computer after n years =}0.50^n\times 2100\$$

Now we need to find n when price is 300 $.

0.50ⁿ x 2100 = 300

0.50ⁿ = 0.143

n log (0.5) = log 0.143

n x -0.301 = -0.845

n = 2.80

After 2.80 years the price drops to 300 $

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3 years ago