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
Lady_Fox [76]
3 years ago
5

Identify the percent of change as an increase or a decrease 20 to 30.

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
4 0

Answer:

50% increase.

Step-by-step explanation:

(New Value - Initial Value)/(Initial Value) * 100 = percentage increase or decrease

(The formula)

You might be interested in
Identify all factors of the expression 〖4x〗^2+17x-15.
Basile [38]

The factors of given expression are: -5 and 3/4

Step-by-step explanation:

Given equation is:

4x^2+17x-15

Making pairs for the mid-term 17x by factoring the product of co-efficient of 4x^2 and 15

4x^2+20x-3x-15

= 4x(x+5) - 3(x+5)

=(4x-3)(x+5)

Now

4x-3 = 0\\4x = 3\\x = \frac{3}{4}

x+5 = 0\\x = -5

Hence,

The factors of given expression are: -5 and 3/4

Keywords: Quadratic equation, factors

Learn more about quadratic equation at:

  • brainly.com/question/10435836
  • brainly.com/question/10541435

#LearnwithBrainly

8 0
3 years ago
If line AD is a tangent to circle B at point C, and m∠ABC = 55º, what is the measure of ∠BAD?
4vir4ik [10]
The tangent AD at point C forms a right angle to circle B, such as ∠ACB=90° and ∠ABC=55°.

We also know that the summation of all angles in a triangle is 180°. Thus we have the expression below:
180°=∠ABC + ∠ACB + ∠BAD
180°=55°+90°+∠BAD
∠BAD=35°

Therefore, the answer is 35°.

7 0
3 years ago
Read 2 more answers
Tucker bought a new speaker priced at $45 and the sales tax is 7%. What is the total cost of the speaker after tax?
OleMash [197]
The total cost is $41.85


Amount Saved = 45 x 7 / 100
Amount Saved = 315 / 100
Amount Saved = $3.15 (answer).
In other words, a 7% discount for a item with original price of $45 is equal to $3.15 (Amount Saved).
Note that to find the amount saved, just multiply it by the percentage and divide by 100.
3 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through (-3, -1) and has a slope of 2/5 ? Put your answer in slope-intercept form.
Scrat [10]

Answer:

  a.  y = 2/5x + 1/5

Step-by-step explanation:

In point-slope form, the equation of a line with slope m through point (h, k) can be written

  y = m(x -h) +k

Then a line with slope 2/5 through the point (-3, -1) will have point-slope equation ...

  y = (2/5)(x +3) -1

This can be simplified to the desired form:

  y = 2/5x +6/5 -1 . . . . . . eliminate parentheses; next, collect terms

  y = 2/5x + 1/5

8 0
3 years ago
Read 2 more answers
Tatami mats are used as a floor covering in Japan. one possible layout uses four identical rectangular mats and one square mat.
Basile [38]
So by definition, area is equal to the length (x) times the width (y). The area of the square mat is = x × y, or xy
If the area of<span> the rectangular mat is twice that of the square mat, the area of the rectangular mat would have to be = 2 </span>× x × y<span>
This can be written as 2x </span>× y, making the length of the rectangular mat twice that of the square mat's length, and the width the same as the square mat's width.<span>

</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • 6÷2(1+2)<br> I WILL GIVE 15 PTS TO CORRECT PERSON
    6·1 answer
  • Which is the result of the following equation<br><br> 3x ^2-9=0
    5·2 answers
  • 30 PTS!!!!!!!!!!! HELP FAST PLEASE!!!!!! WILL GIVE BRAINLIEST!!!!!
    14·1 answer
  • (b+3)/7=(b-3)/6 What number = B?
    9·1 answer
  • A sixth-grade basketball team has 3 centers,
    10·1 answer
  • Find the product of 28 and 4. ONLY type in the number.
    7·1 answer
  • Biologists estimate that the number of animal species of a certain body length is inversely proportional to the square of the bo
    14·1 answer
  • Help plz this question is so hard for me but I hope someone can solve it plz.
    7·2 answers
  • 1In a card game, there are 49 cards, 7 of each color of the rainbow (red, orange, yellow, green, blue, indigo,violet). The cards
    6·1 answer
  • The scatter plot presents Ray’s monthly electricity bills and the amount of time Tay spent at home from January through August.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!