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3 years ago

Which expression is equivalent to -9( -2x - 3)

Mathematics

1 answer:

aivan3 [116]3 years ago

7 0

Answer:

-18x+ 27

Step-by-step explanation:

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Which expressions equal 9 when x=4 and y=1/3

Maslowich

B.
$4 \times 2 = 8$
$3 \times \frac{1}{3} = 1$
$8 + 1 = 9$

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3 years ago

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antiseptic1488 [7]

Answer:

57xsqaure-42x=5.5

Step-by-step explanation:

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3 years ago

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saveliy_v [14]

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12%

Step-by-step explanation:

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3 years ago

284.115 simplified in to a number

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Step-by-step explanation:

Really easy dude?

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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

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

Round up

111 pieces of soda

8 0

3 years ago