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lina2011 [118]
3 years ago
10

PLS HELP I RLY NEED IT

Mathematics
2 answers:
never [62]3 years ago
5 0

Answer:

cos 60° = 1/2, because the cosine and sine are complements

Step-by-step explanation:

I took the test.

Amiraneli [1.4K]3 years ago
4 0

Answer:

d. cos 60° = 1/2, because the cosine and sine are complements

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What is the value of a? brainliest for right answer
Sholpan [36]

Edit: Nevermind I messed up

4 0
3 years ago
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Okay that it 5^4x-13=125
Novosadov [1.4K]

Answer:

x=86250

Step-by-step explanation:

Rearrange:

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

                    (1/5)^4*x-13-(125)=0

Step by step solution :

STEP

1

:

           1

Simplify   —

           5

Equation at the end of step

1

:

    1                    

 (((—)4) • x) -  13) -  125  = 0

    5                    

STEP

2

:

Equation at the end of step

2

:

    1                

 ((—— • x) -  13) -  125  = 0

   54                

STEP

3

:

Rewriting the whole as an Equivalent Fraction

3.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  625  as the denominator :

         13     13 • 625

   13 =  ——  =  ————————

         1        625  

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 :

3.2       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:

x - (13 • 625)     x - 8125

——————————————  =  ————————

     625             625  

Equation at the end of step

3

:

 (x - 8125)    

 —————————— -  125  = 0

    625        

STEP

4

:

Rewriting the whole as an Equivalent Fraction :

4.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  625  as the denominator :

          125     125 • 625

   125 =  ———  =  —————————

           1         625  

Adding fractions that have a common denominator :

4.2       Adding up the two equivalent fractions

(x-8125) - (125 • 625)     x - 86250

——————————————————————  =  —————————

         625                  625  

Equation at the end of step

4

:

 x - 86250

 —————————  = 0

    625  

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:

 x-86250

 ——————— • 625 = 0 • 625

   625  

Now, on the left hand side, the  625  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  x-86250  = 0

Solving a Single Variable Equation:

5.2      Solve  :    x-86250 = 0

Add  86250  to both sides of the equation :

                     x = 86250

One solution was found :

x = 86250

                 

7 0
2 years ago
Suppose that a student has $150 in a band savings account at the start of the school year. Calculate the change in that savings
Iteru [2.4K]
Total after interest would be $157.5
8 0
3 years ago
A leg of a right triangle measures 12 cm. The hypotenuse of the triangle measures 37 cm. What is the measure, in centimeters of
Setler79 [48]

Answer:

<h2>The answer is 35</h2>

Step-by-step explanation:

Since the triangle is a right angled triangle we can use Pythagoras theorem to find the missing side b

Using Pythagoras theorem we have

a² = b² + c²

where a is the hypotenuse

Substitute the values into the above formula and solve

That's

<h3>{37}^{2}  =  {b}^{2}  +  {12}^{2}  \\  {b}^{2}  =  {37}^{2}  -  {12}^{2}  \\  { b}^{2}  = 1369 - 144 \\  {b}^{2}  = 1225 \\ b =  \sqrt{1225}</h3>

We have the final answer as

<h3>35</h3>

Hope this helps you

8 0
3 years ago
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Find the area of an equilateral triangle with apothem 7 cm. Round to the nearest whole number.
Burka [1]
The answer is 255cm<span>²</span>
5 0
3 years ago
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