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Dahasolnce [82]
3 years ago
8

Could someone please help me with this?

Mathematics
2 answers:
jeka57 [31]3 years ago
3 0

Answer:

Line = 180 degrees

137 is angle

x = unknown

180-137 = x

<em>x = 43</em>

Afina-wow [57]3 years ago
3 0

Answer:

137 degrees. find x

Step-by-step explanation:

= Angles on a straight line

= 180

= angles on a straight line - 137 degrees

= 180 degrees - 137 degrees

= 43 degrees

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681/4 i dont know this
ankoles [38]

Answer:

170.25

Step-by-step explanation:

It's a bit tricky to do not on plain paper, but here:

Just assume the long division symbol looks right

  _1_7_0_.25

4 ) 681

    -4

     2 8

     -2 8

          0  1

The remainder is "1", so you'll just have to write that as either a fraction or decimal, whatever is assigned.

Fraction: 170 1/4

Decimal: 170.25

7 0
3 years ago
Read 2 more answers
Hii! I need some help, would anyone mind helping me?
Kisachek [45]

Step-by-step explanation:

{x}^{2}  - 14x  - 25 {y}^{2}  + 100y = 76

Factor by grouping,

( {x}^{2}  - 14x)   - (25 {y}^{2}  - 100y) = 76

Complete the square, with the x variables,

( {x}^{2}  - 14x + 49)  - (25 {y}^{2}  - 100y) = 125

Factor out 25 for the y variables

( {x}^{2}  - 14x + 49) - 25( {y}^{2}  - 4y) = 125

Complete the square

( {x}^{2}  - 14x + 49) - 25( {y}^{2}  - 4y + 4) = 25

Simplify the perfect square trinomial

(x - 7) {}^{2}  - 25(y - 2) {}^{2}  = 25

Make the right side be 1 so divide everything by 25.

\frac{(x - 7) {}^{2} }{25}  -  (y - 2) {}^{2}  = 1

Here our center is (7,2).

8 0
2 years ago
Which number should be added to both sides of the equation to complete the square x^2-10x=7
mixer [17]

Answer:

  25

Step-by-step explanation:

The number that needs to be added is the square of half the x-coefficient:

  (-10/2)^2 = 25

_____

Adding that gives ...

  (x -5)^2 = 32

  x = 5 ± 4√2

5 0
3 years ago
B - (- 7) =-1<br> what is b?
irina1246 [14]

B-(-7)= -1

First negative multiply by negative is POSITIVE.

So: B+7= -1

Subtract 7 from both sides

B= -7-1

B= -8.

Answer: -8.

To Check Answer: Plug in the variable of B in the original equation.

So: -8-(-7)= -1

-8+7= -1

-1= -1

If the Solution works out the answer is right.

4 0
3 years ago
Read 2 more answers
0.985 rounded to the nearest tenth
GarryVolchara [31]
They always try to trick you with this.  Remember anything 5 or above would round up, anything 4 and under would round down.  So look for the tenth place.  that's the 9.  The number to the right is 8 which is greater than 5.  That means round up.  You can't round it to 0.1 because that takes it back down.  So you just move it over.  The answer is 1.0.
8 0
3 years ago
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