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
makvit [3.9K]
3 years ago
9

the length of a rectangle is 4cm longer than the width. the perimeter is 80cm. find the length and the width.

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
7 0

Answer:

I think it is 20cm

Step-by-step explanation:

divide 80 by 4 =20 cm

You might be interested in
The volume of a hemisphere is 144 pi. Find the radius and total surface area.
sineoko [7]
Formula of the Volume of a hemisphere:
V = \frac{2}{3}\pir³
144\pi = \frac{2}{3}\pir³
Multiply by 3 to cancel fraction in the right side
144\pi × 3 = 2\pi r³
432 \pi = 2\pir³
Divide by 2\pi on either sides to isolate r³
\frac{432 \pi }{2 \pi } = \frac{2 \pi }{2 \pi }r³
2\pi and 2 \pi cancel out
216 = r³
Take cube root to find the radius
\sqrt[3]{216} = \sqrt[3]{r^3}
6 = r
Radius is 6 units

The formula of the surface area of a hemisphere is:
S.A = 2\pir² + \pir²
       = 2\pi(6)² + \pi(6)²
       =2\pi × 36 + 36\pi
       = 72\pi + 36\pi
       = 108\pi units²  (in terms of \pi)
       ≈ 339.12 units²

Surface area = 108\pi units
8 0
3 years ago
Help due today please ​
horsena [70]

Answer:

<em>angle ABD =</em><u><em>55 degree</em></u>

<em>angle BCD= </em><u><em>125 degree</em></u>

Step-by-step explanation:

angle ABD and angle DBC are supplementary angles.

Hence, angle ABD +angle DBC = 180 --equation 1

angle ABD = (2x+15) ---equation 2

angle BCD = (4x+45) ------equation 3

ABD+DBC=180

(2x+15) + ( 4x+45 ) = 180

2x+4x+15+45=180

6x+60=180

6x=180-60

6x=120

x=120/6=20

angle ABD= 2x+15= 2(20) +15

                              =40+15= 55 degree

angle BCD= 4x+45 = 4(20) +45

                                = 80+45= 125 degree

Hence, angle ABD =55 degree

            angle BCD= 125 degree

<em>Hope this helps.</em>

7 0
2 years ago
Omg please help me ASAP I reallly need my 100 backkkkkkkk
serg [7]
19, cuz 4x19 is 76 and 72<76
5 0
2 years ago
Read 2 more answers
Math question????????
mixer [17]

Answer:

Answer C

Step-by-step explanation:

7 0
2 years ago
Draw image of triangle abc under a dialtion whose center is p and scale factor is 1/2
artcher [175]

Answer:

.............................................

4 0
3 years ago
Other questions:
  • What is the value of 0.75 - 0.6? write your answer as a fraction in lowest terms.​
    12·2 answers
  • If y = 2x 3, find the value of y when x=-3
    7·1 answer
  • A line passes through the point (0, 5) and has a slope of - 1/2 . Which is the equation of the line in slope-intercept form?
    13·1 answer
  • What is another way to write this number? 300+70+ 5/10+8/100
    7·2 answers
  • The museum admission is $14 and a student is 10$ how much will it cost for one class
    9·1 answer
  • Need help on function tables. Thx
    12·1 answer
  • Sarah has to pay a one-time $300 deposit for her apartment. Each month she pays $700 for rent. How much would Sarah pay for “n”
    12·1 answer
  • A spinner is divided Into eight equal sections and each section contains a number from 1 to 8 what is the probability of the spi
    11·1 answer
  • Irrelevant answers will be reported. DUE TODAY!!!
    8·1 answer
  • Hugh bought some magazines that cost $3.95 each and some books that cost $8.95 each. He spent a total of $47.65. Let m represent
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!