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Lena [83]
2 years ago
13

Please help asap thank you!!

Mathematics
1 answer:
aliya0001 [1]2 years ago
3 0

Step-by-step explanation:

all 4 of them are imaginary numbers, as they are all the result of the multiplication of i with a real number.

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Pls help due ASAP....<br> Pls show workings.
Ann [662]

Answer:

We can conclude that the distance from Sandy's Hotel to Trader Joes' Store is:

  • d = 8.06 miles

Step-by-step explanation:

From the coordinate plane, we can clearly identify that:

  • Sandy's Hotel is located at the point (-8, 9)
  • Trader Joes' Store is located at the point (-4, 2)

The distance from Sandy's Hotel to Trader Joes' Store can be calculated such as:

d=\:\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}

The distance between (-8, 9) and (-4, 2)

d=\sqrt{\left(-4-\left(-8\right)\right)^2+\left(2-9\right)^2}

  =\sqrt{\left(-4+8\right)^2+\left(2-9\right)^2}

  =\sqrt{4^2+7^2}  

   =\sqrt{16+49}

    =\sqrt{65}

    =8.06 miles

Therefore, we can conclude that the distance from Sandy's Hotel to Trader Joes' Store is:

  • d = 8.06 miles
8 0
3 years ago
Simplify the expression 4.2(5.1x+6.8)
Dominik [7]

Step-by-step explanation:

Step-by-step explanation:

Expand: 4.2×5.1×x+4.2×6.8

4.2×5.1×x  to (21.42)x

Simplify: 21.42x+4.2×6.8

4.2×6.8 = 28.5628.56

21.42x+28.56

8 0
3 years ago
What is the vertex form of y=-2x^2-8x+10? Give the coordinates of the vertex, state if there is a minimum or maximum, and find t
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First off, let's notice that the squared variable is the "x", that means is a vertically opening parabola.

notice the leading term's coefficient, is -2, is negative, that means the parabola is opening downwards, is facing down, so it goes up up up, reaches the U-turn and then down down down, is a "hump" or a maximum point.

\bf \textit{vertex of a vertical parabola, using coefficients}&#10;\\\\&#10;\begin{array}{lcccl}&#10;y = & -2x^2& -8x& +10\\&#10;&\uparrow &\uparrow &\uparrow \\&#10;&a&b&c&#10;\end{array}&#10;\qquad &#10;\left(-\cfrac{ b}{2 a}\quad ,\quad   c-\cfrac{ b^2}{4 a}\right)&#10;\\\\\\&#10;\left( -\cfrac{-8}{2(-2)}~~,~~10-\cfrac{(-8)^2}{4(-2)} \right)\implies \left( \cfrac{8}{-4}~~,~~10-\cfrac{64}{-8} \right)&#10;\\\\\\&#10;\left( -2~~,~~10+8 \right)\implies (-2~~,~~18)

and the line of symmetry, well is a vertical parabola, mirroring itself at the line x = -2, which is the x-coordinate of the vertex.
7 0
3 years ago
Solve the following system by elimination. <br>4x + 8y = 20 <br>-4x + 2y = -30
weeeeeb [17]
1. y= -1/2x + 5/2
2.y= 2x-15
7 0
3 years ago
Rewrite 6 and 3/4 as a decimal number
scoundrel [369]
Its going to be 6.75

6+3/4= 6.75= 675%
8 0
3 years ago
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