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bearhunter [10]
2 years ago
12

how many numbers have this property: when you subtract 297 from it, you get the same number but in reverse.

Mathematics
1 answer:
jasenka [17]2 years ago
8 0

9514 1404 393

Answer:

  60

Step-by-step explanation:

Consider the number with digits x, y, z. Its value will be 100z+10y+z. We want the same value when we reverse the digits after subtracting 297.

  100x +10y +z -297 = 100z +10y +x

  99x -99z = 297 . . . . . subtract 100z+10y+x-297

  x -z = 3 . . . . . . . . . . . . divide by 99

The first digit of the number is 3 more than the last digit. There are 60 such numbers. The first digit may be 4..9, and the middle digit may be 0..9.

  401, 502, 603, ..., 906; 411, 512, 613, ..., 916, ..., 491, 592, 693, ... 996

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Complete the steps to solve for x.
mylen [45]
Answer: 11

Explanation:

(4/5)x - (1/4)x = 11
(16/20)x - (5/20)x = 11
(11/20)x = 11
7 0
2 years ago
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If an object is dropped from a tower, then the velocity, V (in feet per second), of the object after t seconds can be obtained b
Amiraneli [1.4K]

Answer:

259.6 ft/sec

Step-by-step explanation:

it is a universal standard that acceleration due to gravity is 32ft/sec^2.

Now it can be verified by equation,

V(f) = V(i)+at (1st equation of motion derived by Newton's three laws of motion)

where,

V(f) is final velocity

V(i) is initial velocity

a is acceleration which is constant and have value 32ft/sec^2

t is time which is given as 7.8 seconds

In the given case, initial velocity that is V(i) will be 0ft/sec. Because, on dropping, object will start to move under the influence of gravity from zero speed.

So,

V(f) = 0 +(32) (7.8)

V(f) = 249.6 ft/sec

Now the condition is given that you have to add a constant 10 to the answer.

so, V(f) = 249.6 + 10

      V(f) = 259.6 ft/sec

5 0
3 years ago
Annie needs $30 to buy a coat. She has saved $12 and plans to work as a babysitter to earn $6 per hour. Which inequality shows t
algol [13]
Annie's total earnings from her initial savings, $12, and from babysitting should be equal or more than 30. Annie's total earnings from babysitting may be expressed as $6n. The inequality should be,
 
                                           12 + 6n <span>≥ 30

Solving for x,
                                             6n </span><span>≥ 30 - 12
</span><span>
                                        6n </span>≥ 18    ;     n <span>≥ 3
</span><span>
Thus, the answer is the second among the choices. 

</span>
6 0
3 years ago
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which of the following graphs shows a negative linear relationship with a correlation coefficient r close to -0.5
Yuri [45]

Answer:

go awnser My questtion i posted and the awnser is B

Step-by-step explanation:

5 0
2 years ago
36/48 in simplest form
babunello [35]
Well you can simplify them by dividing by there greatest common factor. 
In this case they can both divide by 12!
Thats the biggest number they can divide by...
Soo..
36 ÷ 12 = 3 
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48 ÷ 12 = 4 

So your answer is 3/4!

Good Luck! :)
3 0
3 years ago
Read 2 more answers
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