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2 years ago

If a shirt selling for $18 is marked upto $20 then the % increase is

Mathematics

2 answers:

luda_lava [24]2 years ago

8 0

Answer:

11%

Step-by-step explanation:

it is a simple question, whenever you need to find % increase or % decrease.

always divide the increase as in this case $2 by the original amount which is $18 and multiply it by 100 as you need to take the %.

so,

2/18*100 gives you 11.11% * is multiply

const2013 [10]2 years ago

6 0

Step-by-step explanation:

$20 - $18 = $2

to get % of increase we need to know what % of $18 the $2 are.

$2 ÷ $18 = 0.11111111........

Multiply this number by 100 and you will get the percentage.

0.111111111111........ x 100 = 11.1111111111....%

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AB and BC form a right angle at point B if A = (-3,-1) and B = (4,4) what is the equation if BC

sergejj [24]

Answer:

$7x+5y-48=0$

Step-by-step explanation:

Refer the attached figure .

We are given a line AB

Point A $=(x_1,y_1) = (-3,-1)$

Point B $=(x_2,y_2) = (4,4)$

Formula for slope 'm' when two points are given :

$m=\frac{y_2-y_1}{x_2-x_1}$

Substituting thew values

$m=\frac{4-(-1)}{4-(-3)}$

$m=\frac{5}{7}$

Since we are given that AB is perpendicular to BC

So, By property - perpendicular slopes are negative reciprocals of each other.

$\Rightarrow m_1\times m_2 =-1$

$\Rightarrow \frac{5}{7}\times m_2 =-1$

$\Rightarrow m_2 = \frac{-7}{5}$

So, Slope for line BC : $m_2 = \frac{-7}{5}$

Point B = (4,4)

Formula of equation of line : $y-y_1=m(x-x_1)$

$y-4=\frac{-7}{5}(x-4)$

$5(y-4)=-7(x-4)$

$5y-20=-7x+28$

$7x+5y-20-28=0$

$7x+5y-48=0$

Hence the equation of line BC : $7x+5y-48=0$

5 0

2 years ago

kakasveta [241]

Answer:

Your answer would be A.

Step-by-step explanation:

okay so, with a best fit line, it needs to match up with your points. unless your points go up evenly. its not going to connect to all your points.

5 0

1 year ago

How many digits of PI do you know. Give the numbers.

matrenka [14]

3.1415926535 is the ones I have memorized. Shouldnt need to know more then that

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3 years ago

Read 2 more answers

A stainless steel patio heater is a square pyramid. The length of one side of the base is 22.4 in. The slant height of the pyram

mrs_skeptik [129]

Answer:

93.03 in

Step-by-step explanation:

Height of square pyramid: √slant height² - (1/2 base side length)²

SH = √93.7² - 11.2² = 93.03

8 0

3 years ago

You bought a video game for

Temka [501]

Answer: $0

Step-by-step explanation:

every six months means the game loses 25%*2 per year = 50%

2 years would be 50%*2 = 100%

Therefore, if the game loses 100% of its value in 2 years, it will be free.

7 0

3 years ago