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
vampirchik [111]
3 years ago
11

21 + (-21) + (-4) please help me out with this question

Mathematics
1 answer:
max2010maxim [7]3 years ago
4 0

Answer:

-4

Step-by-step explanation:

Adding 21 and -21 cancel each other out so you're left with -4

You might be interested in
Help for
Fed [463]
3 x 5 x 8 =15 x 8 = 120
5 0
3 years ago
Someone please help.
umka21 [38]

Let's go:


\frac{y}{3} = \frac{27}{y} \\\\ y^2 = 27.3 \\\ y^2 = 81 \\\ y = \sqrt{81} \\\ y = 9


I hope I helped you.


8 0
3 years ago
Please help. A trapezoid has base measures of 10 and 14 inches and a height of 6 inches. What is the area?
yaroslaw [1]

Answer:

84 in^2

Step-by-step explanation:

Find the area by first finding the average of 10 and 14 (it is 12) and then multiplying this result (12) by 6:  area of trapezoid = 84 in^2.



6 0
3 years ago
Keisha throws a rock down an old well the distance D in Feet The Rock Falls after T seconds can be represented by D =16t ^ 2 + 6
sesenic [268]

Answer:

<em>1</em><em> </em><em>second</em><em> </em>

Step-by-step explanation:

<em>16t</em><em>^</em><em>2</em><em>+</em><em>64t</em><em>=</em><em>80</em>

<em>16t</em><em>^</em><em>2</em><em>+</em><em>64t-80</em><em>=</em><em>0</em>

<em>64</em><em>^</em><em>2-4</em><em>(</em><em>16</em><em>)</em><em>(</em><em>-80</em><em>)</em>

<em>9216</em>

<em>-64-96</em>

<em>______</em><em> </em><em>=</em><em> </em><em>-5</em>

<em> </em><em> </em><em> </em><em>32</em>

<em>-64</em><em>+</em><em>96</em>

<em>_______</em><em> </em><em>=</em><em> </em><em>1</em><em> </em><em>sec</em>

<em> </em><em> </em><em> </em><em> </em><em>32</em>

7 0
3 years ago
PLS HELP !!!!!!!<br><br> Find the value of x. <br><br> x=
Gre4nikov [31]
The answer to that question is 1
3 0
3 years ago
Other questions:
  • FAST, I'LL GIVVE YOU ALOT OF POINTS
    6·2 answers
  • Pam made 1/2 gallon of tea for 10 people. Each person gets the same amount of tea. How much tea, in gallons, will each person ge
    8·1 answer
  • To decorate the gym for a dance, Zoe cut crepe paper into 10-foot strips. She attached one end of each strip 8 feet up on the wa
    9·1 answer
  • Se quiere diseñar la bandera de un colegio el cual debe tener 1 animal, 1 color de fondo y una palabra representativa. La cantid
    8·1 answer
  • What are the solutions of 3x2 + 14x + 16 = 0?
    15·1 answer
  • Eight rooms in a house need to be painted.<br>Each room can be painted white or<br>yellow.​
    6·1 answer
  • Find the total surface area of this cone.
    14·1 answer
  • Can someone explain how to find the IQR for box plots?
    15·2 answers
  • Can someone please help me with math.
    15·1 answer
  • Solve for y. 9x+5y=7 <br>​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!