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Grace [21]
2 years ago
7

A textbook store sold a combined total of 414 physics and psychology textbooks in a week. The number of physics textbooks sold w

as 68
more than the number of psychology textbooks sold. How many textbooks of each type were sold?
Mathematics
1 answer:
Contact [7]2 years ago
7 0
I am pretty sure the answer is 346 textbooks
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Select the correct answer.
stepladder [879]

Answer:

y = 3x - 3, your answer is D.

Step-by-step explanation:

8 0
3 years ago
!!!PLEASE HELP I'LL GIVE BRAINLIEST AND 30 POINTS!!!
zepelin [54]

If two events are independent, then P(A and B) = P(A) x P(B).

In your situation, you need to solve 0.185 = 0.25 x P(B).

Can you take it from there?

8 0
3 years ago
Prove that the inequality (a+1)·(a+1)>(a−1)·(a−1) is not true for some values of a.
Effectus [21]

Explanation:

Consider the case a = -1. Then the expression becomes ...

  (-1+1)(-1+1) > (-1-1)(-1-1) . . . . test case

  0·0 > (-2)(-2) . . . . . simplified a bit

  0 > 4 . . . . . . . . NOT TRUE

_____

If we subtract the right side from both sides, the inequality becomes ...

  (a+1)(a+1) -(a-1)(a-1) > 0

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  4a > 0

  a > 0

The inequality is only true for positive values of "a". For a ≤ 0, the inequality will not be true.

7 0
4 years ago
Mark ran 213 mi. and Shaun ran 315 mi. Find the difference in the distance that they ran.
Nutka1998 [239]
102 miles you subtract them and get the results
3 0
3 years ago
Round 9,740,399 to the nearest 100,000
Mariana [72]
The answer would be 9,700,000
Hope this helps!!

4 0
3 years ago
Read 2 more answers
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