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
lara [203]
3 years ago
5

A rectangle has width 12 inches and length 16 inches. the width of the rectangle is decreased by 25% and its length is increased

by 25%. how does the area change & by how much?
Mathematics
1 answer:
Romashka [77]3 years ago
3 0
Originally 12 x 16 = 216 inches
Now it’s 9 x 20 = 180 inches

The total area decreases by 36 inches.
You might be interested in
Pls help this is very easy
anastassius [24]

Answer:

20/9

Step-by-step explanation:

Alright, so by using the "keep me, change me, turn me over" method - we can easily solve this:

\frac{8}{9}\div \frac{2}{5}\\=\frac{8}{9}\times \frac{5}{2}\\=\frac{4}{9}\times \frac{5}{1}\\=\frac{4\times \:5}{9\times \:1}\\=\frac{20}{9}

<em>I hope I was of assistance!</em> <em><u>#SpreadTheLove <3</u></em>

4 0
3 years ago
What are the real and complex solutions of the polynomial equation? x^3-8=0. with imaginary numbers
seraphim [82]

Answer:

Solutions are 2,  -1 +  0.5 sqrt10 i  and -1 - 0.5 sqrt10 i

or 2,  -1 +  1.58 i  and -1 - 1.58i

(where the last 2 are equal to nearest hundredth).


Step-by-step explanation:

The real solution is x = 2:-

x^3 - 8 = 0

x^3 = 8

x = cube root of 8 = 2

Note that a cubic equation must have  a total of 3 roots ( real and complex in this case).  We can find the 2 complex roots by using the following identity:-

a^3 - b^3 = (a - b)(a^2 + ab + b^2).

Here  a = x and b = 2 so we have

(x - 2)(x^2 + 2x + 4) = 0

To find the complex roots we solve x^2 + 2x + 4 = 0:-

Using the quadratic formula x = [-2 +/- sqrt(2^2 - 4*1*4)] / 2

= -1 +/- (sqrt( -10)) / 2

= -1 +  0.5 sqrt10 i  and -1 - 0.5 sqrt10 i

4 0
2 years ago
Read 2 more answers
Can Fractions and ratios cannot have zero in the denominator?
labwork [276]
True , is the answer ! :)
4 0
3 years ago
What is f(3) for the quadratic function<br>f(x)=2x2 + x – 12?<br>F -3<br>G 3<br>H 6<br>I. 9​
PolarNik [594]

Answer:

f(3) = 9

Step-by-step explanation:

Wherever you see an x on the right, put a 3 in for that x

f(x) = 2x^2 + x - 12

f(3) = 2*(3)^2 + 3 - 12

f(3) = 2*9 + 3 - 12

f(3) = 18 + 3 - 12

f(3) = 9

5 0
3 years ago
Doug took 93 minutes to answer 31 questions. Click on the equation that can be used to determine the number of questions, q, tha
melisa1 [442]

Answer:

3 questions

Step-by-step explanation:

93/31

5 0
2 years ago
Other questions:
  • from a rope that is 11.5 meters long, two pieces are cut from it that are 1 3\5 and 3 3/10 meters long. what is the length of th
    6·1 answer
  • What are the solutions of the equation x^2 =4? Use of the related function
    10·2 answers
  • The table shows an estimate of costs at Central Texas College for 1 year. What is a reasonable savings goal to meet the cost of
    6·1 answer
  • A square patio has an area of 215 square feet. How long is each side of the patio to the nearest 0.05
    13·1 answer
  • Describe the function
    11·2 answers
  • Pls help will mark brainliest!!!!!!
    11·2 answers
  • Students at a basketball camp each attempted 5 free throws. The camp instructor recorded the number of free throws that each stu
    10·1 answer
  • The zeros of a parabola are 6 and -5. If (-1,3) is a point on the graph, which equation can be solved to find the value of
    14·1 answer
  • Help me help help help help help
    5·2 answers
  • The parabola opens:<br> O left<br> O up<br> O down<br> O right
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!