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Archy [21]
2 years ago
6

The perimeter of a rectangle is 42 inches. If the width of the rectangle is 9 inches, what is the length?

Mathematics
2 answers:
Leona [35]2 years ago
8 0

Answer:

12 inches

Step-by-step explanation:

let length be L

formula for perimeter of rectangle = 2( length + width )

2( L + 9) = 42

2L + 18 = 42

2L = 24

L = 12 inches

vovangra [49]2 years ago
6 0

Answer:

C

Step-by-step explanation:

2 x length + 2 x width = perimeter

2 x length + 2 x 9 = 42

2 x length + 18 = 42

Subtract 18 from both sides

2 x length = 24

1 length = 12

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Tom [10]

Answer:

its 28

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
on each of 3 days Derrick rode 6.45 km to school 150 meters to the library and then 500 meters back home. how many kilometers di
Alisiya [41]
1,969.35.
first you add them all up (6.45+150+500)=656.45, which is how much he rode in 1 day, no you multiply it by 3. so 3(656.45)=1,969.35 so thats how many km he rode in three days 

6 0
4 years ago
If a turtle can move 1/7 of a km every hour, then how many hours would it take for a turtle to go 5 km?
Paul [167]

Answer:

it take 1/7 km in 1 hour then,

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so, it cover 5 km in 35 hours

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5km -------( 5*7) == 35 hours

5 0
3 years ago
Find the y-intercept and the axis of symmetry of f(x)=ax^2+2ax+3.
Setler [38]

Answer:

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Axis of symetry is -1

Step-by-step explanation:

ax^2+2ax+3 <-- y-intercept

Axis of symetry is -b/2a

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7 0
3 years ago
Simplify the expression:<br> 10j2+9j2
SVEN [57.7K]
They’re both like terms so you add them together normally
10+9=19
so
19j2
8 0
3 years ago
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