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jasenka [17]
3 years ago
8

Which expression is equal to -0.4(3/2-1/4)?

Mathematics
2 answers:
Lesechka [4]3 years ago
6 0
I believe it’s c but I could be wrong
mezya [45]3 years ago
3 0

Answer:

The answer is D.

Step-by-step explanation:

The answer is D because the result of the -0.4(3/2-1/4) is -1/2 or -0.5. I checked the answers for everyone, they didn't match except for D, which result also ended in -0.5. You could also open parenthesis and solve like that but I like to compare and double check with the results.

Hope this helped!!

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Please answer this multiple choice question for 23 points and brainliest!!
luda_lava [24]

Answer:

  A.  T = 20°C - (2.8°C/h × 4h)

Step-by-step explanation:

The rate of change of temperature (-2.8°C/h) is multiplied by time (4h) to get the change in temperature (-11.2°C). That change is added to the initial temperature (20°C) to find the temperature after 4 hours.

Only equation A properly expresses this calculation.

In choice B, the rate of change is (wrongly) shown as +2.8°C/h. In the other choices, the combinations of units are nonsense. (What is a °C·h?)

5 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
MrRissso [65]

Answer:

If b is 3, x=-1

Step-by-step explanation:

-2(3x-5)=16

use distributive property

-6x+10=16

take 10 away from both sides

-6x=6

divide both sides by -6

x=-1

6 0
3 years ago
Im working on ratios and proportions and missed some of it. Can anyone help?
Anna35 [415]
So for 1, the way to find one 'part' of the ratio, is to add up the ratio and divide the number from 180 (180 degrees in a triangle). So you would do 7 + 13 + 16 = 36. 180 divided by 36 = 5. Each part represents '5'. So to find the angles, you would do the coefficient multiplied by 5. Therefore, angle DEA is 13 * 5, which is 65 degrees, angle DFA is 16 * 5 = 80 degrees, and angle FDE is 7 * 5, which is 35. You know this is correct because 80 + 35 + 65 = 180 degrees.

For 2, you just have to set up a ratio. So we know that there are 320 cookies for 16 students, so the ratio would be set up as 320:16. So the cookie:student ratio, a.k.a, the number of cookies for each student is going to be the entire ratio divided by 16. We do this because there are 16 students, so to find the amount of cookies for 1 student, we do 16 / 16, which is 1. But of course, this affects the first part of the ratio too, so you do 320 divided by 16, which is 20. So the cookie:student ratio is 20:1. Every 1 student gets 20 cookies. 

For 3, you just have to set up another ratio. If he finds 2 clovers in the first 12 minutes, the clover:minute ratio will be 2:12, or 1:6. This means that for every 6 minutes spent searching, 1 clover will be found. If he spends a total of 180 minutes searching, we can predict the number of clovers he will find by doing a proportion calculation. 180 / 6 = 30. That means we have to multiply 1:6 by 30 to find the number of clovers he will find. We multiply by 30 because 6 * 30 is 180 minutes, and obviously, this will affect the first part of the ratio too. 1 * 30 = 30. So that means the ratio is now 30:180. He will find 30 clovers in 180 minutes.

I hope you get it by now, but if you don't let me know. I'll help you answer the rest of the questions :) 
7 0
3 years ago
Eight more than six times a number added to one more than nine times the number
Nonamiya [84]
Eight more than six times a number added to one more than nine times the number
(8 + 6x) + (1 + 9x)
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6 0
3 years ago
Read 2 more answers
Help please there is actually a question this time
Debora [2.8K]

Answer:

D...

Step-by-step explanation:

Thats on mine and got it right

4 0
3 years ago
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