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
Nezavi [6.7K]
3 years ago
11

Please answer this correctly

Mathematics
2 answers:
gtnhenbr [62]3 years ago
8 0

Answer:

The dimensions are 4 millimetres by 10 millimetres

Step-by-step explanation:

The area of the first rectangle is 5*8=40 square millimetres. Let's call the width of they yellow rectangle w, and the length l. Now you can set up the following system of equations:

l*w=40

2l+2w=28

Isolate one of the variables to substitute:

l=40/w

2(40/w)+2w=28

80/w+2w=28

Multiply both sides by w:

80+2w^2=28w

Move everything to one side:

2w^2-28w+80=0

Factor the quadratic:

2(w^2-14w+40)=0

2(w-10)(w-4)=0

w=4 or 10

l= 10 or 4

Hope this helps!

Reil [10]3 years ago
3 0

Answer:

4 and 10

Step-by-step explanation:

l*w=40

2l+2w=28

l=40/w

2(40/w)+2w=28

80/w+2w=28

80+2w^2=28w

2w^2-28w+80=0

2(w^2-14w+40)=0

2(w-10)(w-4)=0

w=4 or 10

l= 10 or 4

You might be interested in
PLEASE HELP ME THANKS SO Much
allochka39001 [22]

9514 1404 393

Answer:

  (b)  x = 7, AB = 9, AC = 12

Step-by-step explanation:

ΔAEB ~ ΔCDB so corresponding sides are proportional.

  AB/CB = AE/CD

  (x+2)/(x -4) = 12/4

  x +2 = 3(x -4) . . . . . . multiply by x-4

  x +2 = 3x -12 . . . . . . eliminate parentheses

  14 = 2x . . . . . . . . . . . add 12-x

  7 = x . . . . . . . . . . . . . divide by 2

AB = x +2 = 7 +2 = 9

BC = x -4 = 7 -4 = 3

AC = AB +BC = 9 +3 = 12

__

In summary, ...

  x = 7, AB = 9, AC = 12 . . . . . matches the 2nd choice

_____

<em>Additional comment</em>

Please note the other choices make no sense.

  (a) AB = x +2 = -5 +2 = -3 ≠ -9

  (c) AC = 2x-2 = 2(7) -2 = 12 ≠ 9

  (d) segment lengths are never negative in a geometrical figure

8 0
2 years ago
Is the equation equal to, greater than, or less than the dividend?<br><br> 12 divided by 1/4
svp [43]
Greater I’m pretty sure
4 0
3 years ago
which choice is the explicit formula for the following geometric sequence 0.5,-0.1, 0.02, -0.004, 0.0008
defon

Hello,

Answer is C

a_1=0.5=\dfrac{1}{2} \\\\a_2=-0.1=-\dfrac{1}{10} =a_1*(-\dfrac{2}{10} )=a_1*(-\dfrac{1}{5} )\\\\a_3=0.02=\dfrac{2}{10^2} =a_2*(-\dfrac{2}{10} )=a_2*(-\dfrac{1}{5} )=a_1*(-\dfrac{1}{5} )^2\\...\\a_n=a_1*(-\dfrac{1}{5} )^{n-1}\\\\\boxed{a_n=0.5*(-0.2)^{n-1}}\\

8 0
3 years ago
An angle in an isosceles triangle measures 30°. What could the measures of the other two angles be? Consider all options.
34kurt

Answer:35

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Worth 50 Points!!
Naddika [18.5K]
Hello There!

These statements are not equal. If you solve them, you will not get the same value.

Hope This Helps You!
Good Luck :)
7 0
2 years ago
Other questions:
  • Find the value of the power.<br><br><br> 4th to 3rd power
    13·1 answer
  • An article reported the ages of 12 CEOs
    5·1 answer
  • June's flower bed has a length of 8 feet and a width of seven eighths feet. Is the area of the flower bed larger, smaller, or eq
    11·2 answers
  • 24 slices of cheese for $7.44 or 90 slices of cheese for $28.80 <br><br> witch is better to buy?
    15·1 answer
  • A chain weighs 10 pounds per foot. How many ounces will 4 inches weigh?
    7·1 answer
  • If 1 is a root of the equation <br><img src="https://tex.z-dn.net/?f=5x%5E%7B2%7D%20%2Bkx%20-%203%20%3D%200%20%20%20" id="TexFor
    5·1 answer
  • ??????????????????????????????????????????????????????????
    14·1 answer
  • Please help me with this.​ also click image
    11·1 answer
  • On the map below, all numbered streets run parallel to each other. Both 3rd and 4th streets are intersected by King Avenue.
    12·2 answers
  • Find the sum of the first 10 terms of the given sequence.-3,-15,-75,375,-1875
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!