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Arisa [49]
3 years ago
12

the width of a rectangle is three more than half the length. its perimeter is 78 centimeters, find the length and width

Mathematics
1 answer:
cupoosta [38]3 years ago
8 0

Answer:

length=l=21

width = w =18

Step-by-step explanation:

 

78 = 2(2w +3 +w)

 

39 = 2w + 3+ w

 

39= 3w + 3

 

36=3w

 

18 =w

 

l=w+3 =18+ 3=21

 

so dimensions are

 

length=l=21

width = w =18

I think this is the answer, if not i'm so sorry :/

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total of 420 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tic
Gnoma [55]
<span>2x + x = 420
3x = 420
x = 140 Adult tickets </span>
4 0
3 years ago
HELP PLEASE!!
zhenek [66]

Answer:

y = 1/2x + 1.

Step-by-step explanation:

Use the point-slope form of a straight line:

y - y1 = m(x - x1)     (where m=slope and(x1,y1) is a point on line).

y - 3 = 1/2(x - 4)

y = 1/2x - 2 + 3

y = 1/2x + 1.

7 0
2 years ago
Pleasssssssseeee help
astra-53 [7]
Rates like $ per channel is a slope, "m". The added fee is a constant so it's the intercept "b".
y = mx + b

So for the first problem (9)
(a)
y = total cost in dollars
x = number of premium channels
y = 16x + 44
(b) when x = 3 channels
y = 16(3) + 44
y = 92 $

the second problem (10)
(a) every 4 years the tree grows by 12-9=3 ft
So the unit rate or slope will be 3 ft per 4 yrs, (3/4). You can see this also by solving for slope "m" using the given points (4,9) and (8,12).

x = number of years
y = height of tree in ft
y = (3/4)x + b
use one of the points to find the y-intercept "b".

9 = (3/4)(4) + b
9 = 3 + b
9 - 3 = b
6 = b
y = (3/4)x + 6

(b) when x = 16
y = (3/4)(16) + 6
y = 12 + 6
y = 18 ft
5 0
3 years ago
Jenna has at most $100 to spend on clothes. She wants to buy a pair of jeans for $29 and spend the rest on shirts. Each shirt co
maw [93]

Answer:

5 shirts (read explanation)

Step-by-step explanation:

14x+29=100

14x=71

x=5.1

She can buy 5 shirts

8 0
3 years ago
35
jeka94

Answer C

steps

deduct 10 from 26

26-10 which will give us 16

5 0
2 years ago
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