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Stuck on question number 3
answered
Dec 2, 2024
Mathematics
college
4
votes
45.7k
views
Let z₁=r₁(cosθ₁+isinθ₁) and z₂=r₂(cosθ₂+isinθ₂) be complex numbers. z₁z₂=...? a) r₁r₂(cos(θ₁+θ₂)+isin(θ₁+θ₂)) b) r₁r₂(cos(θ₁-θ₂)+isin(θ₁-θ₂)) c) r₁r₂(cosθ₁cosθ₂−sinθ₁sinθ₂+isinθ₁cosθ₂+cosθ₁sinθ₂) d) r₁r
answered
Nov 7, 2024
Mathematics
high-school
3
votes
13.1k
views
What is the base conjugate acid pair in this balanced equation NH3+HNO3→NH4+ + NO3-
answered
Aug 11, 2024
Chemistry
college
2
votes
52.5k
views
Look at the picture i neeed helppppppppppppp
answered
Jul 17, 2024
Mathematics
college
6
votes
10.8k
views
Interpret the data in the circle graph. If 560 books were sold at the book fair, find the number of the books that were mystery books. If 560 books were sold at the book fair, (Type a whole number.) of
answered
Mar 8, 2024
Mathematics
college
4
votes
214k
views
Chromium(III) oxide reacts with hydrogen sulfide (H2S) gas to form chromium(III) sulfide and water: Cr2O3(s) + 3H2S(g) → Cr2S3(s) + 3H2O(l) To produce 565 g of Cr2S3, (a) how many moles of Cr2O3 are required
answered
Jan 22, 2024
Chemistry
college
1
vote
104k
views
What is the sum of a triangle's angles always equal to?
answered
Jul 27, 2023
Mathematics
high-school
9
votes
20.3k
views
Which fraction is equivalent to fraction with numerator 4 and denominator negative 9? fraction with numerator negative 4 and denominator negative 9 fraction with numerator 9 and denominator 4 fraction
answered
Jan 20, 2023
Mathematics
middle-school
10
votes
190k
views
What Industry is mostly found in East Texas?
answered
Jul 2, 2022
History
high-school
8
votes
101k
views
GIVEN THAT TAN Ꝋ= - 4/3 AND Ꝋ IS IN QUADRANT II, FIND SIN 2Ꝋ
answered
Jan 27, 2022
Advanced Placement (AP)
high-school
0
votes
10.3k
views
Which quotation is punctuated correctly? A."My name is Sandra," she said. B. "My name is Sandra." she said. . C. "My name is Sandra" she said. D."My name is Sandra”, she said.
answered
Dec 24, 2021
SAT
high-school
3
votes
138k
views
Tool Manufacturing has an expected EBIT of $82,000 in perpetuity and a tax rate of 24 percent. The company has $143,500 in outstanding debt at an interest rate of 6.3 percent and its unlevered cost of
answered
Oct 23, 2021
Business
college
4
votes
178k
views
43x + 4 = y is known as
answered
Jul 12, 2021
Mathematics
college
1
vote
42.9k
views
Confused on this question
answered
Jun 20, 2021
Chemistry
middle-school
1
vote
21.8k
views
Find the area of a parallelogram bounded by the y-axis, the line x=3, the line f(x)=1+2x,and the line parallel to f(x) passing through (2, 7).
answered
May 22, 2021
Mathematics
high-school
2
votes
142k
views
What is the value of the expression? 8 1/2 - 2 + 4 3/4
answered
Apr 7, 2021
Mathematics
college
2
votes
164k
views
a recipe uses 1 1/4 cups of milk to make 10 servings. if the same amount of milk is used for each serving, how many servings can be made using 1 gallon of milk? take 1 gallon to be equal to 16 cups. please
answered
Apr 2, 2021
Mathematics
college
6
votes
59.0k
views
In a perfectly competitive market, an orange costs $2. If Farmer Joe sells 10 oranges, what is his total revenue? If he decides to sell 1 more orange, what will be the marginal revenue?
answered
Mar 27, 2021
Business
college
3
votes
65.2k
views
The Don't Bite Me Pest Control Company has 10,000 gallons of insecticide supplies on hand that cost $300,000; a bill from the vendor for $100,000 of these supplies has not yet been paid. The company expects
answered
Mar 9, 2021
Business
high-school
2
votes
76.4k
views
In which section of the article would the author add specific reasons why many have questioned the presidential election process? introduction [paragraphs 1-5] “Step #1: Before Election Day” "Step #2:
answered
Jan 10, 2021
English
middle-school
2
votes
153k
views
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