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miss Akunina [59]
4 years ago
7

Triangle D E F is shown. Angle E D F is a right angle. The length of D E is 8 and the length of hypotenuse E F is 10. Given righ

t triangle DEF, what is the value of sin(E)? Three-fifths Three-fourths Four-fifths Four-thirds
Help please!!!
Mathematics
2 answers:
Mandarinka [93]4 years ago
5 0

Answer:

A

Step-by-step explanation:

got it right on edg

lina2011 [118]4 years ago
3 0

Answer:

Three-fifths

Step-by-step explanation:

Sin(E) = opposite/hypotenuse

DE is the base/adjacent, EF is the hupotenuse

DF if the opposite/perpendicular use pythagoras theorem to find DF:

10² = DF² + 8²

100 = DF² + 64

DF² = 36

DF = 6

Sin(E) = DF/EF

= 6/10 = 3/5 = 0.6

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Makovka662 [10]

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5 0
3 years ago
Four less than the product of 2 and a number is the same as negative eightteen. Find the number
dolphi86 [110]

Answer:

12

Step-by-step explanation:

4-2x=-18

-4        -4

-2x=-24

-2      -2

x=12

6 0
3 years ago
Which of the following is the solution to the inequality below?
irakobra [83]

Answer:1/3

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :

                    3/2*(x-1/3)-(-5*x)>0  

Step by step solution :

STEP

1

:

           1

Simplify   —

           3

Equation at the end of step

1

:

  3         1      

 (— • (x -  —)) -  -5x  > 0  

  2         3      

STEP

2

:

Rewriting the whole as an Equivalent Fraction

2.1   Subtracting a fraction from a whole

Rewrite the whole as a fraction using  3  as the denominator :

         x     x • 3

    x =  —  =  —————

         1       3  

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:

x • 3 - (1)     3x - 1

———————————  =  ——————

     3            3    

Equation at the end of step

2

:

  3   (3x - 1)      

 (— • ————————) -  -5x  > 0  

  2      3          

STEP

3

:

           3

Simplify   —

           2

Equation at the end of step

3

:

  3   (3x - 1)      

 (— • ————————) -  -5x  > 0  

  2      3          

STEP

4

:

Equation at the end of step

4

:

 (3x - 1)    

 ———————— -  -5x  > 0  

    2        

STEP

5

:

Rewriting the whole as an Equivalent Fraction :

5.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  2  as the denominator :

          -5x     -5x • 2

   -5x =  ———  =  ———————

           1         2    

Adding fractions that have a common denominator :

5.2       Adding up the two equivalent fractions

(3x-1) - (-5x • 2)     13x - 1

——————————————————  =  ———————

        2                 2    

The equation at the end of step

5

:

 13x - 1

 ———————  > 0  

    2    

STEP

6

:

6.1    Multiply both sides by  2  

6.2    Divide both sides by  13  

     x-(1/13)  > 0

Solve Basic Inequality :

6.3      Add  1/13  to both sides

            x > 1/13

7 0
3 years ago
X^2+8x+c <br> Perfect square Trinomial
Anit [1.1K]
We know <span>square of the sum <span>formula</span></span>
(a+b)²=a²+2ab+b²
so we need
x²+8x+c=(x²+2*4*x+4²)-16+c=(x+4)²+c-16,
so for full square we need  c-16=0
c=16
Answer: c=16
4 0
3 years ago
Khan Academy
Pavel [41]

Answer:

Rewriting p(x) as a product of linear factors: \mathbf{f(x)=(x+3)(x-2)(x+6)}

Step-by-step explanation:

The polynomial p(x) = x^3 + 7x^2 - 36 has a known factor of (x + 3)

We need to find other factors.

First we find quotient of  p(x) = x^3 + 7x^2 - 36 divided by (x + 3)

The division is shown in image attached.

The quotient is: x^2+4x-12

Now, factoring the quotient x^2+4x-12

x^2+4x-12\\=x^2+6x-2x-12\\=x(x+6)-2(x+6)\\=(x-2)(x+6)

The other two factors are (x-2)(x+6)

So, Rewriting p(x) as a product of linear factors: f(x)=(x+3)(x-2)(x+6)

4 0
3 years ago
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