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cupoosta [38]
3 years ago
6

What value of x will make this expression equal to 28.1? A) x=0 is the only value that will make the expression equal to 28.1 B)

x=1 is the only value that will make the expression equal to 28.1 C)The expression will equal 28.1 when x=−3.44 D)Any value of x, except when x=−3.44, will make the expression equal to 28.1

Mathematics
1 answer:
Nikolay [14]3 years ago
5 0

Answer:

Any value except -3.44 will make the equation equal to 28.1

Step-by-step explanation:

We are told to multiply the quotient of the fraction by 28.1 to make 28.1. So, it is obvious that the fraction has to simplified to a one. This is possible with any number as whatever the value of x, the numerator and denominator will be equal. But, in the case of -3.44, it will make 5e fraction 0/0, which is undefined and never equal to 1.

I hope this helps

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A road is inclined at an angle of 6°. After driving 5,440 feet
Natalija [7]
<h3>Answer:  B)  569 feet</h3>

========================================================

Work Shown:

sin(angle) = opposite/hypotenuse

sin(6) = a/5440

5440*sin(6) = a

a = 5440*sin(6)

a = 568.634840176034

a = 569 feet, which shows why <u>choice B</u> is the answer.

This value is approximate. Make sure your calculator is in degree mode. One way to check is to compute sin(30) and you should get 0.5

side note: 569 feet is roughly equal to 0.1078 miles.

4 0
3 years ago
Solve for x x^2-10x+25=35
ZanzabumX [31]

Answer:5 + /- sqrt35

Step-by-step explanation:

Rearranging, we get x^2 -10x -10=0

Applying the quadratic formula,

(10 +/- sqrt(10^2 -4*-10))/2

(10+/- 2sqrt35) /2 = 5 + /- sqrt35 as the two roots.

7 0
3 years ago
There is a pair of parallel sides in the following shape.<br> what is the area of the shape? units^2
den301095 [7]

Answer:

A = 15 units²

Step-by-step explanation:

The figure has 1 pair of parallel sides and is therefore a trapezium.

The area (A) of a trapezium is calculated as

A = \frac{1}{2} h (b₁ + b₂ )

where h is the perpendicular height between bases and b₁, b₂ are bases

here h = 3, b₁ = 3 , b₂ = 7 , then

A = \frac{1}{2} × 3 × (3 + 7) = 1.5 × 10 = 15 units²

3 0
2 years ago
F(x) = 3x - 2x²-4<br> g(x) = x² – 3
kvasek [131]

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Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
Find the value of the variables in the figure below
svetlana [45]

Answer:

The answer to your question is:

x = 21

y = 4

∡ = 75° and 105°

Step-by-step explanation:

Process

            3(x + y)° + 5x = 180                  supplementary angles

            3(x + y) = 4x - 9                        corresponding angles

Expanding

           3x + 3y + 5x = 180       (1)           Like terms

           3x + 3y = 4x - 9            (2)        

          8x + 3 y = 180         (1)

    8   (   -x  + 3 y = -9)       (2)           Multiply by 8

       8x  + 3y = 180       (1)

      -8x +24y = -72        (2)                    Elimitation method

               27 y = 108

                  y = 108 / 27

                  y = 4        

         8x + 3 (4) = 180

         8x +12 = 180

               8x    =  168

              x = 21

             

3(21 + 4) = 3(25) = 75°

5(21) = 105°

       

               

6 0
3 years ago
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