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3 years ago

14

45 + 89.23568 = 67.09876543456 - ?

2 answers:

jeka943 years ago

4 0

I believe the correct answer would be 134.23568, forgive me if I am wrong

katrin2010 [14]3 years ago

3 0

Hi

45 + 89.23568 = 67.09876543456 - ?
First, let's add
134. 23568 = 67.09876543456 - ?
Now let's be smart just for a second :)
We gonna replace this sign ? by x (x means the number we're looking for)
134. 23568 = 67.09876543456 - x
We are solving x, right ? So let's equal it.
Now, we have
-x = 67.09876543456 - 134.23568
You got it ? I hope so :)
Now we subtract
-x = 67.136915
Now we have the number but we can not NEVER left the x with a negative sign, never :)
To eliminate the negative sign we must divide both sides by -1
-x/-1 = 67.136915/-1
x/ = -67. 136915
That's the answer :)

If you have further question about the answer just let me know :)
Thanks !

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Suppose line segment AB has one endpoint at A(0, 0). What are the coordinates of B if (5, 3) is 1/3 of the way from A to B?

prisoha [69]

Answer:

$B(x_2,y_2)= (20,12)$

Step-by-step explanation:

Given

$A = (0,0)$

$Ratio; m : n = 1 : 3$

$Point\ at\ 1 : 3 = (5,3)$

Required

Coordinates of B

This question will be answered using line ratio formula;

$(x,y) = (\frac{mx_2 + nx_1}{m + n},\frac{my_2 + ny_1}{m + n})$

In this case:

$(x,y) = (5,3)$

$(x_1,y_1) = (0,0)$

$m : n = 1 : 3$

Solving for $(x_2,y_2)$

$(x,y) = (\frac{mx_2 + nx_1}{m + n},\frac{my_2 + ny_1}{m + n})$ becomes

$(5,3) = (\frac{1 * x_2 + 3 * 0}{1 + 3},\frac{1 * y_2 + 3 * 0}{1 + 3})$

$(5,3) = (\frac{x_2 + 0}{4},\frac{y_2 + 0}{4})$

$(5,3) = (\frac{x_2}{4},\frac{y_2}{4})$

Comparing the right hand side to the left;

$\frac{x_2}{4} = 5$ -- (1)

$\frac{y_2}{4} = 3$ -- (2)

Solving (1)

$x_2 = 5 * 4$

$x_2 = 20$

Solving (2)

$y_2 = 3 * 4$

$y_2 = 12$

Hence;

$B(x_2,y_2)= (20,12)$

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Read 2 more answers

Please help me solve this.

Vlada [557]

Answer:

<h2>I think that is a FORMULA.</h2>

it can't be solved if we don't know the values of atleast one of the x and y.

Hope this helps.

Good luck ✅.

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