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3 years ago

10

Write an expression for the following situation and solve it. Mr. Simms bought 20 pencils. He used 1/4 of the pencils and then g

ave 4 to his students.

1 answer:

Nitella [24]3 years ago

4 0

Hi!
1/4 of 20 pencils are 5 pencils.
Since he gave away 4 pencils,
Total = 5 + 4 = 9
Mr. Simms use and give away total 9 pencils.

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-1/7÷-5/9<br><br>7/8÷8/9<br><br><br>Show the steps please

Anvisha [2.4K]

So here, the rule "keep,change,switch" works great. so you keep the first fraction the same, switch the division to multiplication and then turn the second fraction upside down
so it looks like this:

-1 * -9= 9
7* 5= 35 = (9/35)

then

7* 9= 63 = (63/64)
8* 8= 64

7 0

3 years ago

Jimmy's backyard is rectangle that is 18 5/6 yards long and 10 2/5 yards wide Jim buy sod in pieces that are 1 1/3 yard long and

g100num [7]

Answer:

111 pieces of soda

Step-by-step explanation:

step 1

Find the area of the rectangular backyard

The area of the rectangular backyard is equal to

$A=LW$

where

$L=18\frac{5}{6}\ yd=\frac{18*6+5}{6}=\frac{113}{6}\ yd$

$W=10\frac{2}{5}\ yd=\frac{10*5+2}{5}=\frac{52}{5}\ yd$

substitute

$A=(\frac{113}{6})(\frac{52}{5})$

$A=\frac{5,876}{30}\ yd^2$

step 2

Find the area of one piece of sod

The area of the rectangular piece of sod is

$A=LW$

where

$L=1\frac{1}{3}\ yd=\frac{1*3+1}{3}=\frac{4}{3}\ yd$

$W=1\frac{1}{3}\ yd=\frac{1*3+1}{3}=\frac{4}{3}\ yd$

substitute

$A=(\frac{4}{3})^2\\\\A=\frac{16}{9}\ yd^2$

step 3

Find the pieces of sod needed

To find out how many whole pieces of sod will Jim need to buy to cover his backyard, divide the area of the backyard by the area of one piece of soda

so

$\frac{5,876}{30} : \frac{16}{9}=\frac{52,884}{480}=110.175$

Round up

111 pieces of soda

8 0

3 years ago

paul asked to order snacks for an office meeting of 180 people. she decides to order desert squares which come in boxes of 24. s

alekssr [168]

Answer:

27 boxses

Step-by-step explanation:

calculations is shown in the picture

7 0

2 years ago

An inequality is given

alexira [117]

Answer:

A
A

Step-by-step explanation:

6 < 3x + 9 ≤ 18

~Subtract 9 to everything

-3 < 3x ≤ 9

~Divide 3 to everything

-1 < x < 3

I will assume the first drop down menu is the first valoue and the second drop down manu is the second value.

Best of Luck!

8 0

3 years ago

What two number can you add to get 20 and multiply to get 28

katrin2010 [14]

The factors of 28 are 1 x 28, 2 x 14, and 4 x 7. None of which add up to 20.

7 0

4 years ago