1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
In-s [12.5K]
2 years ago
14

The length of a rectangle is 3cm greater than its width. the perimeter of the rectangle is 34cm. find its length.​

Mathematics
2 answers:
Sergeeva-Olga [200]2 years ago
7 0

Answer:

length: 10 cm and width: 7 cm

Step-by-step explanation:

Let the width be x

then the length will be x + 3

perimeter of rectangle: 2 ( length + width )

<u>using the formula</u>:

2 ( x + 3 + x ) = 34

2 ( 2x + 3 ) = 34

4x + 6 = 34

4x = 28

x = 7

The width is 7 cm

Length:

x + 3

7 + 3

10 cm

mamaluj [8]2 years ago
4 0

Answer:

10cm

Step-by-step explanation:

The formula for perimeter is:

P=2(l+w)

Let the width of the rectangle be x then the length would be...

3+x

Now, let's plug these values into the equation and solve. (Note we are also given perimeter is 34 cm):

34=2(x+3+x)\\34=2(2x+3)\\Distribute\ the\ 2\ to\ each\ term\ in\ the\ parentheses\\34=2(2x)+2(3)\\34=4x+6\\Subtract\ 6\ from\ both\ sides\\4x=28\\Divide\ both\ sides\ by\ 4\\x=7

And since the length is x+3 then it is...

x+3=7+3=10cm

You might be interested in
You have to help meeee
polet [3.4K]

1) 10 × 10 × 10
2)10000


5 0
3 years ago
Write the quadratic equation that has roots -1-rt2/3 and -1+rt2/3 if its coefficient with x^2 is equal to 1
weeeeeb [17]

The equation of the quadratic function is f(x) = x²+ 2/3x - 1/9

<h3>How to determine the quadratic equation?</h3>

From the question, the given parameters are:

Roots = (-1 - √2)/3 and (-1 + √2)/3

The quadratic equation is then calculated as

f(x) = The products of (x - roots)

Substitute the known values in the above equation

So, we have the following equation

f(x) = (x - \frac{-1-\sqrt{2}}{3})(x - \frac{-1+\sqrt{2}}{3})

This gives

f(x) = (x + \frac{1+\sqrt{2}}{3})(x + \frac{1-\sqrt{2}}{3})

Evaluate the products

f(x) = (x^2 + \frac{1+\sqrt{2}}{3}x + \frac{1-\sqrt{2}}{3}x + (\frac{1-\sqrt{2}}{3})(\frac{1+\sqrt{2}}{3})

Evaluate the like terms

f(x) = x^2 + \frac{2}{3}x - \frac{1}{9}

So, we have

f(x) = x²+ 2/3x - 1/9

Read more about quadratic equations at

brainly.com/question/1214333

#SPJ1

7 0
1 year ago
What is 4 1/2 pint to quart?
Ivanshal [37]

There are two pints every quarter.

So let's convert pints to quarter

   \frac{4\frac{1}{2} }{2} =\frac{\frac{9}{2} }{2} = \frac{9}{4}

There 4 1/2 pint is to 9/4 quarter.

Hope that helps!

p.s. look at my diagram to help you remember

5 0
2 years ago
Please hurry, I'll give brainly
mrs_skeptik [129]

Step-by-step explanation:

there should 90 value

the value of triangle is 90

3 0
3 years ago
Read 2 more answers
In the figure above, sin 52=17/c. Based on the figure, which of the following equations is also true
hram777 [196]

Answer:

c. Cos 52 = 17/c

Step-by-step explanation:

sin(x) = cos(90-x)

3 0
3 years ago
Other questions:
  • Twelve added to the sum of a number and two is forty four
    13·2 answers
  • Please help me!! Just 13-18
    9·1 answer
  • How to do a double number line
    5·1 answer
  • The length of a rectangle is 3 feet more than twice the width. The perimeter is 128 feet. Find the length and width.
    11·2 answers
  • Explain how to write a function rule from the table below.<br><br> x :2 4 6<br> y :1 0 –1
    11·2 answers
  • What is the mad of 45.1
    12·1 answer
  • the length of a rectangle is 4 more than the width, if the perimeter of the rectangle is 100 feet find the length width and area
    8·1 answer
  • At park junior high 10% or 160 of the students play a musical instrument how many students attended the school? Which statements
    12·2 answers
  • 1. (2,7); m=-4<br> What’s the answer?
    15·1 answer
  • The eighth grade field trip to the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!