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
DIA [1.3K]
3 years ago
10

7.

Mathematics
1 answer:
Alenkinab [10]3 years ago
4 0

Answer:

the new area is 1% smaller.

Step-by-step explanation:

the area of a rectangle is length times breadth.

let's call them a and b

Area = a × b

now, a is increased by 10%. that means it is multiplied by 11/10.

because 100% means the whole thing, 1% means a 1/100th part of the whole. and 10% then means 10 times the 1/100th part of 10 × 1/100 = 10/100 = 1/10

if then simmering increases by 10% it means that it is the original 100% plus 10%.

so, it is 100/100 + 10/100 = 10/10 + 1/10 = 11/10

therefore the new length is

a(new) = a(old)×11/10

in exactly the same way, when the breadth is reduced by 10% we get then

breadth(new) = breadth(old)×9/10

so, Area(new) = a(new)×b(new) = a(old)×11/10 × b(old)×9/10

remember, Area(old) = a(old)×b(old)

so, Area(new) = a(old)×b(old) × 11/10 × 9/10 =

= Area(old) × 11/10 × 9/10 =

= Area(old) × 99/100

that means the new area has lost compared to the old area 1/100th of its size. 1/100th = 1%

You might be interested in
A 25 gram sample of a sample that's used for drug research has a k value of 0.1205
ra1l [238]
N=12.5(at time t=t) Here half life
No=25
K=12.05
Simple exponential equation where you need to calculate
Your answer should be 5.75225876
4 0
3 years ago
ZA and ZB are vertical angles. If mZA= (5x – 4) and mZB = (2x – 1)º, then find the value of x. INI​
natulia [17]

Answer:

x = 1

Step-by-step explanation:

It is given that,

∠A and ∠B are vertical angles.

∠A = (5x – 4) and ∠B = (2x – 1)

We need to find the value of x.

We know that, the vertical angles are equal. So,

∠A=∠B

(5x – 4)=(2x – 1)

Taking like terms together,

5x-2x = 4-1

3x=3

x = 1

So, the value of x is equal to 1.

4 0
3 years ago
Which expression is equivalent to 4 square root 6 divided by 3 root 2?
saw5 [17]

Answer:

\sqrt[12]{55296}/2

Step-by-step explanation:

\sqrt[4]{6}/\sqrt[3]{2}=1.2422

\sqrt[12]{27}/2=0.66 <-- not matching with the top expression.

\sqrt[4]{24}/2=1.11<--not matching with the top expression.

\sqrt[12]{55296}/2=1.2422<-- matches!!

\sqrt[12]{177147}/3=0.91<-- not matching with the top expression.

5 0
3 years ago
Equivalent expression 7+3-2=
Oxana [17]

Answer:

Step-by-step explanation:

7+3-2=3+7-2

6 0
3 years ago
Students can buy up to 10 books at the book fair the cost of the books as shown in the graph what is the range of the graph
bogdanovich [222]

The answer is 8 okay

3 0
4 years ago
Other questions:
  • Please help this is my last try
    11·1 answer
  • (Variables on both sides of an equation)
    10·2 answers
  • Jerome’s aunt, who is 51, is three times Jerome’s age. What is Jerome’s age?
    10·2 answers
  • What is b ?<br> -14+6b+7-2b=1+5b
    15·1 answer
  • Which phrase describes the algebraic expression (image)? the product of 8 and 7 more than a number the quotient of 8 and 7 8 tim
    15·1 answer
  • Which number complete the inequality​
    9·1 answer
  • 13w + 9 = 178<br> What’s the first step in solving this equation
    7·2 answers
  • select the procedure that can be used to show the converse of the pythagorean theorem using side lenghths chosen from 6cm, 9cm,
    10·2 answers
  • Diana looks up at an angle of 57 and sees a hot air balloon 150 meters away. To the nearest meter, what is the value of x,
    7·2 answers
  • Between which two numbers will you find 5.634 x 10^2? A. 0.0562 and 0.0563B. 0.0563 and 0.0564C. 562 and 563D. 563 and 564
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!