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rewona [7]
3 years ago
13

Write and solve a word problem that can be modeled by difference -4-10

Mathematics
1 answer:
serious [3.7K]3 years ago
5 0
According to the weather station, the temperature was –4 degrees Celsius last night. And today, it is now –10 degrees Celsius.

What was the change in temperature over night?

Answer: 6 degrees Celsius

Solution: 

= -4 – (-10)
= -4 + 10
= 6 degrees Celsius
You might be interested in
28 -4a = 3a -14+2a<br> ------
Greeley [361]
24+14 = 3a + 4a +2a
38 = 9a
——————————
Hope it is helpful.
6 0
3 years ago
Read 2 more answers
|×|=×<br>is the absolute value of x always, sometimes, or never x​
il63 [147K]

Answer:

Sometimes

Step-by-step explanation:

I’ll give you an example so you can understand:

Let’s say x is 4. So plug 4 into the problem:

|4|=4  →  This is a very true statement, where the absolute value of 4 is equal to 4.

Now, let’s say x is -7. So plug -7 into the problem:

|-7|=-7  →  This is a false statement because it’s saying that the absolute value of -7 is -7 which is very untrue.

So |x|=x only works for positive numbers, but not negative numbers. Therefore, |x|=x is the absolute value of x <u>sometimes.</u>

<u />

Hope this helps and answers your question! :)

6 0
3 years ago
I NEED HELP PLEASE!!!
solmaris [256]

Answer:

C

Step-by-step explanation:

cos(theta) is positive in IV quadrant and sin(theta)=sqrt(13^2-5^2)/13=-12/13

7 0
3 years ago
A fruit seller purchased 20 kg of apples at Rs 80 per kg and sold them at Rs 85 per kg. find profit and profit percent​
viktelen [127]

Answer:

Profit = Rs 100

Profit %age = 6.25%

Step-by-step explanation:

Cost Price = Rs 80

Cost Price for 20 kg = Rs 1600

Selling Price = Rs 85

<u><em>Profit for 1 kg</em></u> = Rs 85 - Rs 80

=> Rs 5 (For 1 Kg)

<u><em>Profit for 20 kg:</em></u>

=> Rs 5*20

=> Rs 100

<u><em>Now Profit %age:</em></u>

=> \frac{100}{1600}* 100

=> 0.0625 * 100

=> 6.25%

7 0
3 years ago
Read 2 more answers
In a normal distribution, what is the probability that a randomly selected data value will fall within two standard deviations o
Zepler [3.9K]
The answer is 95%

This is something you should memorize. Specifically it is from the Empirical Rule (or 68-95-99.7 rule) which gives rough approximations of areas under the curve. 
5 0
3 years ago
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