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I need you help in math

Mathematics

1 answer:

MArishka [77]3 years ago

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The answer is c bc cats+fish=8 and 8/20 is 0.4 and 2/5=0.4 too

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a 3 pound tub of butter at n dollars per pound costs $3.85. select the equation that most accurately depicts the word problem

Oksi-84 [34.3K]

<span>the equation that most accurately depicts the word problem is
3xn=$3.85
proof
n=</span>
<span>n=$3.85/3=$1.28
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</span>

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3 years ago

Read 2 more answers

a roller skating rink offers a special rate for birthday parties. On the samr day, a party for 10 skaters cost $107 and a party

olga nikolaevna [1]

Answer:

$119

Step-by-step explanation:

Let

x -----> the number of skaters

y -----> the cost for birthday parties

we have the points

(10,107) and (15,137)

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{137-107}{15-10}$

$m=\frac{30}{5}=6\ \frac{\$}{skater}$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=6\\point\ (10,107)$

substitute

$y-107=6(x-10)$

step 3

Convert to slope intercept form

$y-107=6x-60$

$y=6x-60+107$

$y=6x+47$

step 4

How much would a party for 12 skaters cost?

For x=12 skaters

substitute the value of x in the equation and solve for y

$y=6(12)+47$

$y=\$119$

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