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
bazaltina [42]
3 years ago
11

What is the percent of decrease from 40 to 30?

Mathematics
1 answer:
Naddika [18.5K]3 years ago
3 0
The percent decrease is 25 because 10 percent is 4 and then 4 x 2 = 8 which is 20
So u need 2 more les which is half of 4 so 5 percent together = 25% decrease
You might be interested in
What is the length x of the right triangle, rounded to the nearest<br> tenth?
Zarrin [17]

Answer:

109.5; B

Step-by-step explanation:

From your identity,

CosA = adjacent/ hypothenus

A represent an arbitrary angle between the sides in question.

In the question above, A=64

Hypothenus is the longest side and adjacent is the side just below the angle .

In the above case,

Hypothenus= X

adjacent =48

This means;

Cos64 = 48 /X

X = 48 / cos64; [ from cross multiplication and diving through by cos64]

X = 48 /0.4383 [ cos64 in radian = 0.4383]

= 109.51

= 109.5 to the nearest tenth.

Note( do your calculation of angle in radian or else, you won't get the answer)

6 0
3 years ago
Anna saves 3 dollars for every 10 dollars she earns.Patrick saves 5 dollars for every 20 dollars he earns.Do the two save money
NNADVOKAT [17]
The two do not save money at the same rate, because if you make common denominators of 20, Anna saves 6 dollars for every 20, while Patrick only saves 5 dollars for every twenty earned. So, Anna ends up saving more than Patrick.
4 0
4 years ago
Solve |2x - 5| = 4 I dont know what you solve for
ICE Princess25 [194]

Hello!

Answer:

\huge\boxed{x = 1/2, 9/2}

|2x - 5| = 4

Solve for the negative and positive expressions:

2x - 5 = 4

2x = 9

x = 9/2

------------

-(2x - 5) = 4

-2x + 5 = 4

-2x = -1

x = 1/2.

Therefore, the solutions are x = 1/2 and 9/2.

6 0
4 years ago
The area of a square mat is 125 square inches. The best approximation of its length is inches. If the length of each side is inc
gtnhenbr [62]
The area of a square is simply the side length squared and we are given that the area is 125 so:

s^2=125

s=√125

s=5√5

Now using the area equation again, and adding 1 inch to s we have:

A=(s+1)^2, and using s found above we have:

A=(5√5+1)^2

A=125+10√5+1

A=126+10√5 in^2

A≈148.36 in^2  (to nearest hundredth of a square inch)
4 0
4 years ago
Read 2 more answers
What is the area of the triangle?
Andrews [41]

Answer:

Can u attach the image pls

7 0
3 years ago
Other questions:
  • If <img src="https://tex.z-dn.net/?f=A%20%3D%20log_%7B5%7D2" id="TexFormula1" title="A = log_{5}2" alt="A = log_{5}2" align="abs
    15·1 answer
  • In a class of 40 students on average 8 will be left handed, if a class includes 12 lefties estimate how many students are in the
    13·1 answer
  • What is the expanded form of 33,169
    5·1 answer
  • How can you find 4 x 754 using two different methods
    14·1 answer
  • During an eruption, a volcano that is 10,000 feet tall shoots a rock into the air with an initial vertical velocity of 220 feet
    11·1 answer
  • This REALLY easy. 10pts.
    6·2 answers
  • What is a the are of a sqeuar with sides of 7/8 ? Use a formula A = s2
    14·1 answer
  • Help asap plsplspls!! :)
    9·1 answer
  • You went to the barber to get your hair cut. The haircut cost $30. You tipped the barber 20%. How much money did you give the ba
    9·1 answer
  • A boat traveled 308 miles each way downstream and back. The trip downstream took 11 hours. The trip back took 22 hours. Find the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!