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
steposvetlana [31]
2 years ago
8

Find each sum.

Mathematics
2 answers:
Ilya [14]2 years ago
6 0
(3n2-5n+6)+(-8n2-3n-2)
3n2-5n+6-8n2-3n-2
Collect like terms
3n2-8n2-5n-3n+6-2
-5n2-8n+4
yuradex [85]2 years ago
3 0

Answer:

1) C    2) 4, 11, 5

Step-by-step explanation:

Edgenuity, Just got it right

You might be interested in
Given: angle 1 is supplementary to angle 2 and angle 1 is congruent to angle 3.
gregori [183]
 ∠1 and ∠2 are supplementary    // given∠3 and ∠4 are supplementary    // given∠1 ≅ ∠3    // given m∠1 + m∠2 = 180°    // definition of supplementary anglesm∠3 + m∠4 = 180°    // definition of supplementary angles m∠1 + m∠2 = m∠3 + m∠4    // transitive property of equality m∠1 = m∠3    // definition of congruent angles m∠1 + m∠2 = m∠1 + m∠4    // substitution property of equality (replaced m∠3 with m∠1) m∠2 = m∠4    // subtraction property of equality (subtracted m∠1 from both sides) ∠2 ≅ ∠4    // definition of congruent angles


8 0
3 years ago
Which of the following is an example of a variable expense?
olganol [36]

Answer:

Step-by-step explanation:

Rent, wages and car insurance don't vary much.  Grocery expenses depend upon the particular groceries purchased each time one goes to the grocery store, and are least likely to be steady / constant from week to week.

3 0
3 years ago
Jane calculated the circumference of a circle to be 36π. what is the area if the circle
marshall27 [118]

Answer:

103.13

Step-by-step explanation:

A=πr2

C=2πr

A=C2

4π=362

4·π≈103.1324

4 0
2 years ago
A. 1) Given
SCORPION-xisa [38]

<u>Reasons</u>

  1. Given
  2. A midpoint splits a segment into two congruent parts
  3. A triangle with a right angle is a right triangle
  4. HL

8 0
2 years ago
Type the correct answer in the box. express your answer to two significant figures. a reaction between 1.7 moles of zinc iodide
irga5000 [103]

The percent yield of zinc carbonate is 5.91%.

<h3>What is chemical reaction?</h3>

The chemical reaction is the reaction between two reactants which led to the formation of products.

The products are substances which forms after reaction. The reactants are the substances which are original materials.

Given is a reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate.

The given balanced equation is:  Na₂CO₃ + ZnI₂ → 2NaI + ZnCO₃

From given moles of zinc iodide, the moles of zinc carbonate

1.7 moles of ZnI₂ = 1.7 moles of ZnCO₃

Molar mass of zinc carbonate is 125.38 g/mol

Theoretical yield =  1.7 moles of ZnCO₃ x  125.38 g/mol = 213.15 g  ZnCO₃

Theoretical yield is 213.15 g and the actual yield is given as 12.6 g.

percent yield = [ 12.6 g / 213.15 g  ZnCO₃ ] x 100

percent yield = 5.91%

The percent yield of zinc carbonate is 5.91%.

Learn more about chemical reaction.

brainly.com/question/22817140

#SPJ1

7 0
2 years ago
Other questions:
  • The minute hand of a clock is 6 inches long and moves from 12 to 4 o'clock. How far does the tip of the minute hand move?
    14·1 answer
  • What's (20 Times 18) Times 5
    13·1 answer
  • Find the equation for the line is perpendicular to 9x+3y=15 (-3,3)
    8·2 answers
  • The inches of rainfall in the rainforest is represented by the function f(x) = 3(x-2)+ 4. What is the average rate of change bet
    12·1 answer
  • Richard is planning a trip to Italy he thinks he will need $2750 for the trip if the trip is 40 weeks away which is the best est
    8·1 answer
  • Please, somebody, solve this quick and reply with step by step explanation AND provide all steps of working!
    6·1 answer
  • Find x and y in to the diagram​
    9·1 answer
  • Evaluate the following expression.<br> cos870° - sin780º =
    10·1 answer
  • For one English test jason correctly answered 22 questions these correct answers gave him a percent score of 50% In total how ma
    12·1 answer
  • There are 120 people at a party 1/3 of the people leave the party work out the number of people still at the party
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!