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Monica [59]
1 year ago
14

Show how to make a ten to solve 13-7. Write the number sentence.

Mathematics
1 answer:
VARVARA [1.3K]1 year ago
5 0
-7 + 3 + 10 = -4 + 10 = 10 - 4 = 6. 

To turn 13 into 10, you need to break it up into 10 + 3, which does not change the value of 13. Then, you add 3 to -7, which results in -4. Next, you add -4 to 10 (or rather, subtract 4 from 10), which results in 6. 

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Find the distance between the points (-6,7) and (0,8)
natka813 [3]

We can solve this problem by using the distance formula. The distance formula is: \sqrt{(x_{1}-x)^{2} + (y_{1} - y)^{2}} We can now put in values and solve.


\sqrt{(-6-0)^{2} + (7-8)^{2}}


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8 0
2 years ago
If the product of two consecutive integers is decreased by 20 times the greater integer, the result is 442. find the integers
Contact [7]
Let the first integer be x.  Then the next consecutive integer is x+1.

Translating the word problem into symbols, x(x+1)-20(x+1) = 442.

Then x^2 + x - 20x - 20 = 442

or      x^2 - 19x - 462 = 0

Solve by completing the square:

          x^2 - 19x + 90.25 - 90.25 - 462 = 0

           (x-9.5)^2 - 552.25 = 0

Taking the positive square root of both sides, we get x-9.5 = 23.5, or
                                                                                    x        = 33

The two consecutive integers are 33 and 34.

Check:  (33)(34)-20(34) = 442 (as expected).

            
8 0
1 year ago
A mountain climber took 2 minutes to rappel down 60 feet. Which equation shows the correct calculation to show his movement per
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Answer: C

Step-by-step explanation: going down would mean it's negative, so -60, and you're comparing the feet by the amount of minutes so dividing it by 2 which would be -30. so the answer would be c, -60/2=-30

8 0
1 year ago
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4. 298

Step-by-step explanation:

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