Ask question

Ask question

All categories

3 years ago

13

Samuel collected 30 signatures from fifth-grade students at his school. He noticed that 3/5 of the signatures were done in penci

l. How many of the signatures were done in pencil?

2 answers:

IrinaK [193]3 years ago

7 0

Answer:

18

Step-by-step explanation:

if you divide 30 by 5 (30/5) and multiply 3 by that number you will get your answer of 18/30 signatures

Iteru [2.4K]3 years ago

3 0

Answer:

30 / 5 = 6.

6x3=18

Step-by-step explanation:

Hope this helped! Have a great day!

You might be interested in

I tried to figure it out but i can't. i need to show the work and i don't know how to do it.

Andreas93 [3]

Integration Formula:

$\int\limits {x}^{n} \, dx =\frac{x^{n+1}}{n+1} + C$

Integrate each term:

$\int\ {x^{2}} \, dx = \frac{x^{3}}{3}$

$\int\ {x} \, dx =\frac{x^2}{2}$

$\int\ {5} \, dx = 5x$

$\int\ {x} \, dx =\frac{x^2}{2}$

$\int\ {2} \, dx = 2x$

Altogether this becomes:

$\frac{\frac{x^3}{3} - \frac{x^2}{2}-5x }{ \frac{x^2}{2}+2x}$

Your limits are 1 and 2. Substitute both numbers into the equation and minus them from each other.

x = 2:

$\frac{\frac{2^3}{3} - \frac{2^2}{2}-5(2) }{ \frac{2^2}{2}+2(2)}$

-

x = 1:

$[tex]\frac{\frac{1}{3} - \frac{1}{2}-5 }{ \frac{1}{2}+2}$ [/tex]

x = 2:

$\frac{\frac{8}{3} - \frac{4}{2}-10 }{ \frac{4}{2}+4}$

-

x = 1: $\frac{\frac{8}{3} - 2-10 }{ 2+4}$

=

-1.212317928

Now convert all the answers to integers and see which one matches -1.212317928:

Because it's a negative number, we know it can only be A or B.

(A) = -1.212317928

(B) = -1.19047619

The answer is A: $-\frac{3}{2} +In\frac{4}{3}$

<h2>(A) - 3/2 = ln 4/3</h2>

7 0

3 years ago

Justin bought 10 pounds of flour for $5. How many pounds of flour did he get per dollar?

FinnZ [79.3K]

2pounds of flour per dollar

7 0

3 years ago

Simplify<br> CLEAR Step By Step Explanation Please. <br> Will Mark Brainliest

siniylev [52]

Answer:

1/x+5

Step-by-step explanation:

1. Rewrite 3x as a difference

x-2/x^2 + 5x-2 - 10

2. Factor out x from the equation, then factor out -2.

x-2/ x+(x+5) - 2(x+5)

3. Factor out x+5 from the expression

x-2/ (x+5)(x-2)

4. Reduce the fraction with x-2

x-2 / (x+5) x-2

1/x+5

8 0

3 years ago

Mixed number 66 2/3 % equals what percent in the simplest form

daser333 [38]

Answer:

$66\frac{2}{3}\% = \frac{2}{3}$

Step-by-step explanation:

Given:

$66\frac{2}{3}\%$

Required

Express in its simplest form

$66\frac{2}{3}\%$

Convert to improper fraction

$66\frac{2}{3}\% = \frac{66*3+2}{3}\%$

$66\frac{2}{3}\% = \frac{198+2}{3}\%$

$66\frac{2}{3}\% = \frac{200}{3}\%$

% means $\frac{1}{100}$

So, we have:

$66\frac{2}{3}\% = \frac{200}{3} * \frac{1}{100}$

$66\frac{2}{3}\% = \frac{200*1}{3*100}$

$66\frac{2}{3}\% = \frac{2*1}{3*1}$

$66\frac{2}{3}\% = \frac{2}{3}$

<em>The expression has been finally simplified</em>

5 0

3 years ago

Which set of ordered pairs is NOT a function? {(0,0), (1,1), (2,2), (3,3)} {(1,2), (3,4), (4,5), (5,6)} {(4,1), (5,1), (6,1), (7

vovikov84 [41]

Do you not have a graph to go with it?

4 0

3 years ago