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Arturiano [62]
3 years ago
11

Help me with my 8th grade math by answering them plz ive been on this fo 2 hours

Mathematics
1 answer:
SOVA2 [1]3 years ago
4 0

The square root of 21 is a decimal or 3 square roots of 3

Are you looking for answers with decimals?

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Question 9 (1 point)
Lisa [10]

Step-by-step explanation:

the answer is on the photo above

3 0
3 years ago
A line has gradient 5.
MAVERICK [17]

Answer:

x = k - 3

Step-by-step explanation:

Given parameters:

  Gradient of the line = 5;

Coordinates; M(x, 8)

                       N(k, 23)

Solution:

If we use the expression for finding the slope of the line, we can solve this problem;

     Slope  = \frac{y_{2} - y_{1}  }{x_{2} - x_{1} }

    where

    x₁ = x    y₁ = 8

    x₂ = k    y₂ = 23

Input the parameters:

       5  = \frac{23 - 8}{k -x }

          15 = 5(k - x)

           3= k- x

           k - x = 3

 Express x in terms of k;

          -x = 3 - k

Multiply through by -1;

          x = -3 + k

          x = k - 3

7 0
3 years ago
Write an equation of the line that passes through (2,-3) and is perpendicular to the line y=-2x-3
Alina [70]

Answer:

y = 1/2 x - 4

Step-by-step explanation:

slope of perpendicular line is 1/2

y +3 = 1/2 (x -2)

y + 3 = 1/2x - 1

y = 1/2x - 4

3 0
3 years ago
find an equation of the line through the given points. give the final answer in slope-intercept form (-2,2) (4,-1)​
Pachacha [2.7K]

to get the equation of any straight line, we simply need two points off of it, let's use the points in the picture below.

(\stackrel{x_1}{-2}~,~\stackrel{y_1}{2})\qquad (\stackrel{x_2}{4}~,~\stackrel{y_2}{-1}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-1}-\stackrel{y1}{2}}}{\underset{run} {\underset{x_2}{4}-\underset{x_1}{(-2)}}}\implies \cfrac{-3}{4+2}\implies \cfrac{-3}{6}\implies -\cfrac{1}{2}

\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{2}=\stackrel{m}{-\cfrac{1}{2}}(x-\stackrel{x_1}{(-2)}) \\\\\\ y-2 = -\cfrac{1}{2}(x+2)\implies y-2=-\cfrac{1}{2}x-1\implies y=-\cfrac{1}{2}x+1

4 0
3 years ago
The scale of a map is 1:1,000,000. What are the real distances between two points if the distance between them on this map is: 1
snow_lady [41]

Answer:

Step-by-step explanation:

Scale= 1:1,000,000

Scaled distance = 1.8 dm

Actual distance = 1.8*1,000,000 = 1,800,000 dm

3 0
3 years ago
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