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
butalik [34]
3 years ago
11

Simplify the following expression. -21 - (-11)

Mathematics
1 answer:
Bumek [7]3 years ago
6 0

Answer:

-10

Step-by-step explanation:

well you know that

(-)(-)=(+)

so we have

-21-(-11)\\\\=-21+11\\\\=-10

You might be interested in
A rancher has a roll of fencing to enclose a rectangular area. The table shows how the area that the rancher can enclose with th
Free_Kalibri [48]
Checking for each option

Option A: A(w) = -w^2+200w

Substitute w = 10 and check if we'd get 900 as the answer
A(10) = -(10)^2+200(10) = -100+2000 = 1900

Option B: A(w) = -w^2+100w
Substitute w = 10 and check if we'd get 900 as the answer
A(10)=-(10)^2+100(10)=-100+1000=900

Option C: A(w)=w^2+40w
Substitute  w = 10 and check if we'd get 900 as the answer
A(10) = 10^2+40(10)=100+400=500

Option D: A(w) = w^2+90w
Substitue w = 10 and check if we'd get 900 as the answer
A(10)=10^2+90(10) = 100+900=1000

Answer: Option B



8 0
3 years ago
Read 2 more answers
You sketch a right triangle that has a hypotenuse of 13 centimeters, and one leg that is 8 centimeters. How many centimeters is
olasank [31]

Hello from MrBillDoesMath!

Answer:

sqrt(105)

(which is approximately 10.25 centimeters )

Discussion:

Call the unknown leg"a". From the Pythagorean theorem

8^2 + a^2 = 13^2            => subtract 8^2 = 64 from both sides

a^2  = 13^2 - 64              => as 13^2 = 169

a^2  = 169 - 64 = 105     => take the square root of both sides

a = sqrt(105) which is approximately 10.25 centimeters

Thank you,

MrB

8 0
3 years ago
Read 2 more answers
Anyone know this?I need helppp
Fittoniya [83]

Answer:

nope sorry

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
In the number 36,802 if the 8 was replaced with a 2 would the value increase or decrease
stepan [7]

Answer:

decrease

Step-by-step explanation:

4 0
3 years ago
Which graph shows the solution to the following inequality?<br>4d- 6 &lt; 18 <br>PLEASE HELP​
kenny6666 [7]

Answer:

answer a

Step-by-step explanation:

4d-6 < 18

  • Let's isolate d on one side of the equation. Ignore the inequality for now. We'll deal with that later.

4d-6=18\\4d-6+6=18+6\\4d=24\\\frac{4d}{4}=\frac{24}{4}\\ d=6

  • Now, I'm going to bring back the inequality or < symbol. I only removed it when simplifying and isolating d, but if this confuses you, just do your math and keep the inequality there.

d < 6

  • On a number line, this would include every number <em>less than </em>6, due to the < (less than) symbol. This disqualifies answers b and d because they are showing every number <em>greater than </em>6. But, how do we decide between answers a and c?
  • If a line has point at its beginning, 6, then that means that every number <em>less than or equal to</em> [ ≤ ] 6 is being shown, but our equation just says <em>less than </em>[ < ] 6, so answer a is our correct answer.
4 0
4 years ago
Read 2 more answers
Other questions:
  • Find the magnitude and direction of the vector. Round the length to the nearest tenth and the degree to the nearest unit. Diagra
    7·1 answer
  • 55 is 40% of what number
    15·1 answer
  • Does anyone know the anwser its urgent
    6·2 answers
  • The table shows conversions of common units of length.
    15·2 answers
  • Find the distance between points M(-7,5) and Z(2,-3)
    7·1 answer
  • Does anyone know the answer?
    10·1 answer
  • Find the perimeter of the figure.
    10·2 answers
  • 1. The factors of a2 - 9 are
    13·1 answer
  • Kellen read 93 pages in 3 days. How many pages did he read per day?
    12·2 answers
  • han want to buy a $30 ticket to a game, but the pre-oder tickets are sold out, he knowns there will be more tickets sold the day
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!