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sladkih [1.3K]
4 years ago
11

Simplify the expression: 6 + 8j - 9j + -5j - 3

Mathematics
1 answer:
dangina [55]4 years ago
8 0
So first you’ll combine the J’s.
8j - 9j = 1j
+ -5j
Which will be -4j.
That makes: 6 + -4j - 3
So you can subtract 6-3 to make 3.
Which makes 3 + -4j
That’s the answer!
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nick have collection of 80 cars.3/5 of his toys are bus.the rest are cars and bike.the number of cars are the three time the num
stiks02 [169]

Answer:

24 cars

Step-by-step explanation:

out of 80 toys, 3/5 are buses- 80 * 3/5 is 48 so there are 48 buses

80 - 48 is 32, 32 of the rest of the toys are cars and bikes

we know that there are 3 times as many cars than bikes, so to find out how many cars and bikes there we can do 3n + n, where n is the number of bikes it also equals 4n

32 = 4n; n = 8

there are 8 bikes, so there are 24 cars

8 0
3 years ago
Is it true 4 and -4 have a sum of 0
mafiozo [28]

Answer:

Yes, 4 + -4 = 0.

Think of it like a number line: The number four is 4 units to the right of the center which is 0, and the number negative four is 4 units to the left of the center. When you add them together, those distances cancel out, and you just get 0.

3 0
3 years ago
If the ratio of boys to girls in the is 8:5, can you determine how many students are in the class in all? Explain why or why not
alexandr1967 [171]
If the ratio of boys to girls in a class is 8:5 you will not be able to tell how many students are in the class because there could be 8 boys and 5 girls in the class or there could be 16 boys and 10 girls.
8 0
3 years ago
What is bigger 15 % or 1/5 ?
vaieri [72.5K]
1/5 is greater because 
10/50
20/100

15% is only 15/100
6 0
3 years ago
1. Which is closest to the length of<br> GH<br><br> A. 7.6<br> B. 10.2<br> C. 13.6<br> D. 15.8
Oksanka [162]

Answer:

C. 13.6

Step-by-step explanation:

a^2+b^2=c^2

64+121=185

square root of 185 = 13.6

5 0
3 years ago
Read 2 more answers
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