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
Fittoniya [83]
3 years ago
6

Help stuck on methods question ​

Mathematics
1 answer:
andreev551 [17]3 years ago
4 0

Answer:

x=3

Explanation:

Let's write an equation for the area of this figure.

This figure can be divided into 2 rectangles, a vertical and horizontal rectangle.

Area of rectangle= length× breadth

Area of vertical rectangle= 6x

Length of horizontal rectangle= (7 -x) cm

Area of horizontal rectangle= x(7-x)

Since total area= 30 cm^2,

6x+ x(7-x)= 30

6x +7x -x^2= 30 (expand)

-x^2 +13x-30= 0 (bring all terms to one side)

x^2 -13x +30= 0 (divide by -1)

(x -10)(x -3)= 0 (factorise)

x -10= 0 or x -3= 0

x= 10 or x= 3

(reject)

We reject x=10 since from the diagram, x cm is less than 6cm.

You might be interested in
3/ [(5)^(1/2) – (3)^(1/2)] simpfily
love history [14]
Usually the easiest way to solve this is by using a calculator. Of course only if your teacher allows you too.
8 0
3 years ago
I need help with ratios.
ra1l [238]
Me toooo! if anyone in these comments could answer my question, that'd be awesome!
6 0
3 years ago
Read 2 more answers
PLEASE HELP! 35 POINTS
nignag [31]
no solution, they are all the same line
4 0
3 years ago
URGENT
harina [27]
 <span>Just list all elements that belong both to A and to B 
A ∩ B = {6,12}</span>
3 0
3 years ago
1. Find the slope of the line.<br><br> 2. Find the rate of change.
d1i1m1o1n [39]

Answer:

the slope of the line is 2 over 1 which means the answer is 2

the rate of change is c

To find the slope of the line you have to go rise over run.

to find the rate of change you have to see how much does the numbers in y go by.

8 0
3 years ago
Other questions:
  • What is 0.0000234 in scientific notation
    6·1 answer
  • Which of the following statements describes one part of completing the square for x2 + 4x = 32?
    7·1 answer
  • If f(x) = x4 + 2x3 – 5x2 – X + 6,<br> what would be the P list of<br> possible rational roots?
    11·1 answer
  • Students in Miss Moseley's fourth grade class are learning multiplication, and they demonstrate mastery by passing assessments.
    8·1 answer
  • Transformation of functions
    6·1 answer
  • What is the factor form of n^-25<br> (n—25)(n-1)<br> (n-5)(n+5)<br> (n+5)(n+5)<br> (n-25)(n+1)
    12·1 answer
  • I only have 4 options which are<br> 38<br> 40<br> 42<br> 46<br> i dont know which one to pick
    13·1 answer
  • Help me please I don't know it​
    14·1 answer
  • A shop tech earns a base pay of ​$19.68 per​ hour, plus​ "time-and-a-half" for overtime​ (time exceeding 40​ hours). If he works
    12·1 answer
  • The sides of the figure below measure 12, 17, and 20 centimeters. Find the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!