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Solnce55 [7]
3 years ago
11

2 numbers whose sum is 23 and difference is -81

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
5 0
What are you trying to say?
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It is known that 1.4< square root of 2 <1.5. Find all possible values of the expression 2-square root of 2. How do I find
horsena [70]

Answer:

0.5<2-√2<0.6

Step-by-step explanation:

The original inequality states that 1.4<√2<1.5

For the second inequality, you can think of 2-√2 as 2+(-√2).

Because of the "properties of inequalities", we know that when a positive inequality is being turned into a negative, the numbers need to swap and become negative. So, the original inequality becomes -1.5<-√2<-1.4. (Notice how the √2 becomes negative, too). This makes sense because -1.5 is less than -1.4.

Using our new inequality, we can solve the problem. Instead of 2+(-√2), we are going to switch "-√2" with both possibilities of -1.5 and -1.6. For -1.5, we would get 2+(-1.5), or 0.5. For -1.4, we would get 2+(-1.4), or 0.6.

Now, we insert the new numbers into the equation _<2-√2<_. The 0.5 would take the original equation's "1.4" place, and 0.6 would take 1.5's. In the end, you'd get 0.5<2-√2<0.6. All possible values of 2-√2 would be between 0.5 and 0.6.

Hope this helped!

4 0
3 years ago
Use conversion factors to find the answer, distance tracked in feet after 12 seconds at 87 miles per hour.
Assoli18 [71]
1 hour=3600 seconds
1 mile=5280 feet
87 miles/hr (1 hr/3600 sec)(5280 ft/mile)=127.6 feet/sec

Distance= Rate*time
d=127.6(12)=1531.2 feet (after 12 seconds) 
3 0
3 years ago
What does the slope of a line represent?
timurjin [86]

Answer:

A.  change in a dependent variable

6 0
3 years ago
Read 2 more answers
Can some help me answer this question ASAP
Maru [420]

Answer:

A

Step-by-step explanation:

v + w   //substitute values

-3i + 2 - 4i  //combine like terms

-7i +2

4 0
3 years ago
Kim Lu, a data entry clerk, earns $12.25 per hour. She worked 36 hours last week. She also worked 12
lions [1.4K]

Answer:

549

Step-by-step explanation:

Kim Lu, a data entry clerk, earns $12.25 per hour. She worked 36 hours last week. She also worked 12 hours at a part-time job life guarding at $9.00 per hour. What was Kim's total straight-time pay for both jobs?

12.25 * 36 = 441

12 * 9  = 108

441 + 108 = 549

3 0
1 year ago
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