2 years ago

A rectangle is three times as long as it is wide if it's perimeter is 56cm.find the width of the rectangle

Mathematics

2 answers:

Zina [86]2 years ago

5 0

the length is 3W cm. THerefore, the perimeter is 2*(3W + W) = 8W = 56 So W = 7 cm.

Nataliya [291]2 years ago

3 0

Answer:

I'm answering the question that u have posted in comment.

Step-by-step explanation:

let the age of her daughter be x

now,

3x-6=36

3x=36-6

x=30/3

x=10

so, the age of her daughter is 10years.

hope it helps.

You might be interested in

Answer All please (13 points)

3241004551 [841]

1. 8 because 8+8=16+1=17
2. 15 because 15-3=12
3. 5 because 5 times 3 =15 and 5times 2=10+5=15
4. 6 because 6times 2 =12 +2=14. And 6+8=14
5. 10 because 6times 10=60
6. 4 because 4+7=11 and 4times2=8+3=11

4 0

2 years ago

Solve x2 + 2x = 4 for x by completing the square. x equals plus or minus square root of 5 plus 1 x equals plus or minus square r

steposvetlana [31]

Answer:

x equals plus or minus square root of 5 minus 1

Step-by-step explanation:

we have

$x^{2} +2x=4$

Divide by 2 the coefficient of the x-term

$2/2=1$

squared the number

$1^2=1$

Adds both sides

$x^{2} +2x+1=4+1$

$x^{2} +2x+1=5$

Rewrite as perfect squares

$(x+1)^{2}=5$

take the square root both sides

$x+1=(+/-)\sqrt{5}$

$x=(+/-)\sqrt{5}-1$

therefore

x equals plus or minus square root of 5 minus 1

4 0

2 years ago

PLEASE HELP ASAP I’LL GIVE BRAINLEST ITS ALEKS ALGEBRA 2 MATH

vlada-n [284]

A)
145 - 5d
5d = 145, set equal

29 days to lay all the track

b)
5*19 = 95

145-95 = 50

After 19 days, they have 50 miles to go.

4 0

2 years ago

Read 2 more answers

The graph of the function g(x) is a transformation of the parent function f(x)=x².

Len [333]

Answer:

The answer is c)

Step-by-step explanation:

g(x)=x^2-4

3 0

2 years ago

22x – 54 + 5.736x^4 - 2x^2<br> Standard form

Yuri [45]

Answer:

5.736x^4 - 2x^2 +22x - 54

Step-by-step explanation:

4 0

2 years ago