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Tasya [4]
3 years ago
10

What is the value of the expression 5 x (4+3)-4

Mathematics
2 answers:
iren2701 [21]3 years ago
7 0
The value of 5x(4+3)-4 is 31
Brums [2.3K]3 years ago
4 0
31 Becuase 4+3 is 7 and 7x5 is 35-4 is 31
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What basic trigonometric identity would you use to verify that sin x +1/ sin x=1 +csc x
SVETLANKA909090 [29]

Answer:  The correct option is (c). \csc x=\dfrac{1}{\sin x}.

Step-by-step explanation:  We are given to select the correct basic identity that we will use to verify the following:

\dfrac{\sin x+1}{\sin x}=1+\csc x.

We have

\dfrac{1+\sin x}{\sin x}\\\\\\=\dfrac{1}{\sin x}+\dfrac{\sin x}{\sin x}\\\\\\=1+\dfrac{1}{\sin x}.

In order to verify the given trigonometric equation, we must have

1+\dfrac{1}{\sin x}=1+\csc x\\\\\\\Rightarrow \dfrac{1}{\sin x}=\csc x\\\\\\\Rightarrow \csc x=\dfrac{1}{\sin x}.

Thus, the required identity that we will use is

\csc x=\dfrac{1}{\sin x}.

Option (c) is CORRECT.

5 0
3 years ago
The ___ of an event is the ratio of occurrences to trials.
Yuki888 [10]

Answer:

Experimental probability

Your Welcome

5 0
3 years ago
Which value of kkk makes 5-k+12=165−k+12=165, minus, k, plus, 12, equals, 16 a true statement?
trapecia [35]

Answer:

k=1

Step-by-step explanation:

Simplify   1/k

   3     2         1

(((—+2)-(—•k))-4)-(—-2)  = 0

   k     k         k

2.1   Subtracting a whole from a fraction

     2     2 • k

  2 =  —  =  —————

       1       k  

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

1 - (2 • k)     1 - 2k

———————————  =  ——————

    k            k  

Simplify  2/k

3     2        (1-2k)

(((—+2)-(—•k))-4)-——————  = 0

   k     k          k  

Simplify 3/k

 3     2        (1-2k)

(((—+2)-(—•k))-4)-——————  = 0

   k     k          k  

5.1   Adding a whole to a fraction

3                      (1 - 2k)

(((— +  2) -  2) -  4) -  ————————  = 0

   k                         k    

6.1   Subtracting a whole from a fraction

       2     2 • k

  2 =  —  =  —————

       1       k  

7.1   Subtracting a whole from a fraction

3 + 2 • k     2k + 3

—————————  =  ——————

   k           k  

8.1       Adding fractions which have a common denominator

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

       2     2 • k

  2 =  —  =  —————

       1       k  

9.1     Pull out like factors :

 2 - 2k  =   -2 • (k - 1)

10.1    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:

-2•(k-1)

———————— • k = 0 • k

   k    

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

The equation now takes the shape :

 -2  •  (k-1)  = 0

Equations which are never true:

10.2      Solve :    -2   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

10.3      Solve  :    k-1 = 0

Add  1  to both sides of the equation :

                    k = 1

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is a product 1/2×5?​
german
1/2 x 5 equals 2.5

hope that helps lol
4 0
3 years ago
Shirley estimated the length of a board to be 18 inches. The actual length is 23 inches. To the nearest tenth of a percent, what
artcher [175]

The percent error of Shirley's estimate is 21.74%

<h3>Calculating pecent error</h3>

Given the following parameters

  • Actual length = 23 inches
  • Estimated length = 18in

% error = actual-estimated/actual * 100

% error = 23-18/23 * 100

% error  = 500/23

% error = 21.74%

Hence the percent error of Shirley's estimate is 21.74%

Learn more on percent error here: brainly.com/question/5493941

5 0
2 years ago
Read 2 more answers
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