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3 years ago

7

if kevin took 1/10 of an hour to use 1/2 of package of napkins. how many hours would it take to use 2 packages?

1 answer:

sladkih [1.3K]3 years ago

6 0

Answer:

2/5 hours

Step-by-step explanation:

We can write a proportion to solve

1/10 hour x hours

---------------- = -------------------

1/2 package 2 packages

Using cross products

1/10 * 2 = 1/2 x

1/5 = 1/2x

Multiply each side by 2

1/5 * 2 = 1/2x *2

2/5 =x

2/5 hours

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SpyIntel [72]

Answer:

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Step-by-step explanation:

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6 0

3 years ago

Read 2 more answers

Find the Value of Y! Thank u!!!

Virty [35]

Answer:

my bad if im wrong but i got y=35

Step-by-step explanation:

4 0

3 years ago

Sarah paid a food bill of $13.74 with a $20 bill. How much change was she owed? A. $6.74 B. $5.26 C. $6.26 D. $33.74

zhenek [66]

Change = $20 - $13.74 = $6.26

3 0

3 years ago

Read 2 more answers

What is the equation for an arithmetic sequence with a first term of 8 and a second term of 5? an = 8 − 5(n − 1) an = 8 + 5(n −

Ksju [112]

an =a1+d(n-1)

where d is the common difference

d=5-8

d=-3

a1=8

an =8-3(n-1)

Choice C

6 0

3 years ago

1. Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations

sasho [114]

Answer:

The equation is $y=2x^2+4x-7$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

The point (-4,9) must satisfy this function,

$\Rightarrow a(-4)^2+b(-4)+c=9$

$\Rightarrow 16a-4b+c=9...(1)$

The point (0,-7) must also satisfy this function,

$\Rightarrow a(0)^2+b(0)+c=-7$

$\Rightarrow c=-7...(2)$

The point (1,-1) must also satisfy this function,

$\Rightarrow a(1)^2+b(1)+c=-1$

$\Rightarrow a+b+c=-1...(3)$

We put equation 2 into equation 1 to get;

$\Rightarrow 16a-4b-7=9$

$\Rightarrow 16a-4b=16$

$\Rightarrow 4a-b=4...(5)$

We again put equation 2 into equation 3 to get;

$\Rightarrow a+b-7=-1$

$\Rightarrow a+b=6...(6)$

We add equation 5 and 6 to get;

$5a=10$

$\Rightarrow a=2$

We put $a=2$ into equation 6 to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The equation is therefore $y=2x^2+4x-7$

5 0

3 years ago