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Pavel [41]
3 years ago
11

Please help me i’ll give brainliest or whatever its called

Mathematics
1 answer:
kirill [66]3 years ago
7 0

Answer:

<h2>2.6</h2>

Step-by-step explanation:

To solve this, we need to use the Pythagorean theorem to solve this.

The way to solve is by solving for AD by using triangle CAD and then using that result to solve for BD.

3.4² + b² = 6.5²

11.56 + b² = 42.25

42.25 - 11.56 = b²

b = √30.69

b = 5.53985559 or about 5.5

4.9² + b² = 5.5²

24.01 + b² = 30.69

30.69 - 24.01 = 6.68

b = √6.68

b = 2.58456959666 or about 2.6

<h2>EDIT: the other user is incorrect, here's why</h2>

3.4 + 4.5 = 7.9

6.5² + 4.9² = 7.9²

66.26 doesn't equal 62.41

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What adds to 1 and multiples to -90
wariber [46]

Answer:

+10 and - 9

Step-by-step explanation:

If we consider the multiples of - 90

± 1, ± 2, ± 3, ± 5, ± 6, ± 9, ± 10, ± 15, ± 30, ± 90

The combination of multiples which multiply to - 90 and add to + 1 are

+ 10 and - 9

since 10 × - 9 = - 90 and 10 - 9 = 1

6 0
3 years ago
Given the distance between (x,1) and (-2,5) is 2 root 7, find the the value of x. Leave your answer in simplified exact form
Neporo4naja [7]

Answer:

Step-by-step explanation:

Distance = the square root of (x2-x1)2 + (y2-y1)2Added:Distance Formula: Given the two points (x1, y1) and (x2, y2), the distance between these points is given by the formula:square root of x2-x1 squared +y2-y1 squared

8 0
3 years ago
Given that RT ≅ WX, which statement must be true?
wel
The length of TR<span> ≅ The length of XW</span>
4 0
3 years ago
4/w - 10 = 5<br>this is 8th grade<br>​
vovikov84 [41]

Answer:

4/w-10=5

One solution was found :

                  w = 4/15 = 0.267

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    4/w-10-(5)=0

Step by step solution :

Step  1  :

           4

Simplify   —

           w

Equation at the end of step  1  :

  4          

 (— -  10) -  5  = 0

  w          

Step  2  :

Rewriting the whole as an Equivalent Fraction :

2.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  w  as the denominator :

         10     10 • w

   10 =  ——  =  ——————

         1        w  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

4 - (10 • w)     4 - 10w

————————————  =  ———————

     w              w  

Equation at the end of step  2  :

 (4 - 10w)    

 ————————— -  5  = 0

     w        

Step  3  :

Rewriting the whole as an Equivalent Fraction :

3.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  w  as the denominator :

        5     5 • w

   5 =  —  =  —————

        1       w  

Step  4  :

Pulling out like terms :

4.1     Pull out like factors :

  4 - 10w  =   -2 • (5w - 2)

Adding fractions that have a common denominator :

4.2       Adding up the two equivalent fractions

-2 • (5w-2) - (5 • w)     4 - 15w

—————————————————————  =  ———————

          w                  w  

Equation at the end of step  4  :

 4 - 15w

 ———————  = 0

    w  

Step  5  :

When a fraction equals zero :

5.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 4-15w

 ————— • w = 0 • w

   w  

Now, on the left hand side, the  w  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  4-15w  = 0

Solving a Single Variable Equation :

5.2      Solve  :    -15w+4 = 0

Subtract  4  from both sides of the equation :

                     -15w = -4

Multiply both sides of the equation by (-1) :  15w = 4

Divide both sides of the equation by 15:

                    w = 4/15 = 0.267

One solution was found :

                  w = 4/15 = 0.267

Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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If the polygon is below the line, the rotation is a.

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