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aev [14]
3 years ago
7

A teacher can grade 30 papers in 6 minutes and 100 papers in 20 minutes what is the rate of change

Mathematics
1 answer:
mr Goodwill [35]3 years ago
3 0

Answer:

70

Step-by-step explanation i subtracted but im not good at math so dont take my word for it

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Solve for x −9x+5≤17 OR 13x+25≤−1
arsen [322]

Answer:

(-∞ 2] ∪ [-4/3 ∞ )

Step-by-step explanation:

Given compound inequality,

-9x+5\leq 17\text{ or }13x+25\leq -1

-9x\leq 12\text{ or }13x\leq -26  ( Subtraction property of inequality )

-x\leq \frac{12}{9}\text{ or }x\leq -\frac{26}{13}   ( Division property of inequality )

-x\leq \frac{4}{3}\text{ or }x\leq -2

x\geq -\frac{4}{3}\text{ or }x\leq -2   ( a < b ⇒ - a > - b )

Hence, the solution of the given inequality is,

(-∞ -2] ∪ [-4/3 ∞ )

3 0
3 years ago
Read 2 more answers
The graph shows the amount of money Joe earns each hour he works. Which statement about the graph is not true?
saul85 [17]

Answer: G

Step-by-step explanation: the rate of change is constant, making it a proportional relationship

4 0
3 years ago
Read 2 more answers
1.01&lt;0.99 true,4.5=4.50 true, 3.5&lt;3.39 true?, lastly is 1.51&gt;1.15 true?
kirza4 [7]
No, yes, no, yes

What part of comparing number values do you not understand? Most folks figure out enough about place value to be able to answer this by 3rd grade. If there's something about this question that really stumps you, please advise in the comments.
5 0
3 years ago
What multiplies to -4 and adds up to 7?
devlian [24]
The two numbers are (7+ sqrt(65))/2 and (7- sqrt(65))/2

(7+ sqrt(65))/2+ (7- sqrt(65))/2= 7
(7+ sqrt(65))/2* (7- sqrt(65))/2)= -4.

Hope this helps~
6 0
3 years ago
22+63 is the same as 20 +
puteri [66]

Answer:

65

because 22 + 63 equals 85 and 20+65 equals 85 as well.

hope it helps :)

6 0
3 years ago
Read 2 more answers
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