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Xelga [282]
3 years ago
10

Problem 3

Mathematics
1 answer:
Alex3 years ago
6 0

Answer: Problem 3: 20 laps per day,

Inequality: x >=20 per day

Problem 4: minimum of 8 employees

Step-by-step explanation:

Given that the goal is 600 laps in a month

And a month contains 30days, to achieve 600 laps, we divide 600 laps by 30 days

= 600/30= 20

Reem needs to swim a minimum of 20 laps per day to achieve her goal.

Inequality: x should be greater than or equal to 20 laps daily.

x >= 20

Problem 4:

Given that each employee can paint 85square feet per hour

The building has 1360 square feet and to be completed in two hours

Number of employees to complete the job in one hourwill be 1360/85 = 16

If 16 employees will complete 1360 per hour, then 8 employees will complete the work in 2 hours.

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Which values for a and b make the statement (a + 2)(b – 9) = 0 true?
nignag [31]
I’m pretty sure that is true
6 0
3 years ago
Solve for x <br>21x+6<br>help please ?
OLEGan [10]

subtract 6 from the 21x+6. Then divide by 21. The answer is going to be -6/21

4 0
3 years ago
Read 2 more answers
The question is in the picture. The answer is 14 but I don't know how to get that.
andrezito [222]
Let's convert the problem into Arithmetic progression:
It would be: 5, 9, 13, .... 

Here, a = 5, d = 9 - 5 = 4
We know, S(n) = n/2 [ 2a + (n-1)d ]

Substitute the known values, 
434 = n/2 [ 2(5) + (n - 1)4 ]
434 * 2 = n [ 10 + 4n - 4 ]
868 = 10n + 4n² - 4n
= 4n² + 6n - 868 = 0

d = b² - 4ac
d = 6² - 4(4)(-868)
d = 36+13888
d = 13924

Now, roots = -b +- √d / 2a
= (-6 + √13924) / 2(4)   OR  (-6 - √13924) / 2(4)
= (-6 + 118) / 8   OR  (-6 - 118) / 8
= 112/8  OR  -124/8
= 14 OR -15.5

As number of sticks can't be in negative/decimal or fraction form, -15.5 would be fully rejected.

In short, Your Answer would be 14 [ Remaining root ]

Hope this helps!
7 0
3 years ago
Read 2 more answers
Estimate and then solve 1,029 ÷ 21 = ___. (4 points)
Schach [20]
You’re answer is c.49
i didn’t have to estimate because 21 times 49 gives you 1,029

Hope this is helpful!!!
6 0
3 years ago
Point k is between points H and J, HK=x-5, KJ=5x-12, and HJ=25. Find the value of x
Firdavs [7]
We know that if K is between H and J that HK+KJ=HJ therefore by substitution,  x-5+5x-12=25

6x-17=25

6x=42

x=7
4 0
3 years ago
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