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professor190 [17]
3 years ago
11

Plz help :)))))))))))))))))))

Mathematics
1 answer:
natita [175]3 years ago
8 0
(2 - 7z)(2 + 7z)
= (2)^2 - (7z)^2
= 4 - 49z^2

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Nicolas sold 86 newspapers on Monday 79 on Tuesday and 68 on Wednesday and 83 on Friday how many newspapers did Nicholas sell on
natima [27]

Answer:

75

Step-by-step explanation:

86+79+68+83=316

391-316=75

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Solve the system of linear equations by ellmination. 5x + 9y = -11 3x + 9y = -3 A. (-4,-1) -B. (-1, –4) C. (-4,1) D. (1,-4)​
valentina_108 [34]

Answer:

Step-by-step explanation:

5x + 9y = -11

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5x + 9y = -11

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3 years ago
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ahrayia [7]

Use the factor theorem to determine whether the first polynomial is a factor of the second polynomial x-3;2x^2-4x+30

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4 years ago
Rachel tutors English. for each hour that she tutors, she earns 50 dollars. Let E be her earnings (in dollars) after tutoring fo
n200080 [17]

Answer:

a. E = 50 H b. 950 dollars

Step-by-step explanation:

a. Since Rachel tutors English for 50 dollars for each hours, her rate is 50 dollar per hour. If she tutors for time, H hours, Her earning E = rate × time = 50 × H

E = 50H.

b. If Rachel's earnings after tutoring for 19 hours is gotten by substituting H = 19 into the equation for the earnings, E.

So, E = 50H

E = 50 × 19

E = 950 dollars.

So, Rachel's earnings after 19 hours is 950 dollars.

4 0
3 years ago
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