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
Kaylis [27]
2 years ago
10

The price of an item yesterday was 130. Today, the price fell to 91 . Find the percentage decrease.

Mathematics
2 answers:
Shalnov [3]2 years ago
7 0

Answer:

30%

Step-by-step explanation:

130-91=39

39 / 130 =0.3

0.3x100=30

and you got the answer!

yKpoI14uk [10]2 years ago
5 0

Answer:

30%

Step-by-step explanation:

percentage decrease has the formular=

decrease/actual number× 100/1

decrease= 130-91=39

percentage decrease= 39/130 × 100

=0.3×100= 30%

You might be interested in
Sandy charges each family that she babysits for a flat fee of $10 for the night and $5 extra per
Pani-rosa [81]
30 = 5x + 10 so x = 4
5 0
3 years ago
Simplify the expression 14 + 5(x+3)-7
Alenkasestr [34]
14 + 5(x+3)-7
14 + 5x +15 -7
5x + 22
8 0
3 years ago
Find the values of x and y
zhuklara [117]

You can use a tangent:

tangent=\dfrac{opposite}{adjacent}

We have opposite = 17 and adjacent = x.

\tan30^o=\dfrac{\sqrt3}{3}

substitute:

\dfrac{17}{x}=\dfrac{\sqrt3}{3}       cross multiply

x\sqrt3=(3)(17)     multiply both sides by √3

x(\sqrt3)(\sqrt3)=51\sqrt3

3x=51\sqrt3      divide both sides by 3

x=17\sqrt3

Use the Pythagorean theorem:

y^2=(17\sqrt3)^2+17^2\\\\y^2=289(\sqrt3)^2+289\\\\y^2=289\cdot3+289\\\\y^2=867+289\\\\y^2=1156\to y=\sqrt{1156}\\\\y=34

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

Other method.

30^o-60^o-90^o triangle.

The sides are in the ratio 1:2:\sqrt3\to17:y:x

Therefore

17:(2\cdot17):(17\sqrt3)\to17:34:17\sqrt3\to x=34,\ y=17\sqrt3

 


4 0
4 years ago
Without using a calculator, fill in the blanks with two
Akimi4 [234]

Answer:

Pretty sure its 7 and 8

Step-by-step explanation:

test it out

5 0
3 years ago
Read 2 more answers
At a local election there were two propositions on the ballot, R and S. Twice as many voters voted "yes" for R as for S. If the
Over [174]

Answer:

c. 130

Step-by-step explanation:

Let call B the quantity of voters who voted yes for both propositions.

From the question we know that twice as many voters voted "yes" for R as for S, that can be written as the following equation:

R+B=2(S+B)

Where R is the number who voted "yes" for R but "no2 for S and S is the number who voted "yes" for S but "no" for R.

Replacing R by 750 and S by 310 and solving for B, we get:

750+B=2(310+B)

750+B=620+2B

2B-B=750-620

B=130

So, 130 voters voted yes for both propositions

7 0
3 years ago
Other questions:
  • The area in square feet of a rectangle field is X squared -100 X +2100. The width, and feet, is X -30. What is the length in fee
    15·1 answer
  • Ashley drove 864 miles in 12 hours, at the same rate how mnay would she drive in 9 hours?
    13·1 answer
  • Given: y varies directly with x and has a constant rate of change of 7. When the value of y is 12, then the value of x would be
    12·2 answers
  • Solve similar triangles (advance)​
    7·1 answer
  • 5 Ib equals how many oz
    8·2 answers
  • Use the number line to add the fraction (pic provided)pls help
    15·2 answers
  • Please help me, im desperate
    11·1 answer
  • 50 points!!
    8·1 answer
  • A. The ratio of the number of boys
    13·1 answer
  • Aku minta tolong dengan ini
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!