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kolezko [41]
3 years ago
10

Can you please give me a step by step? thank you!

Mathematics
2 answers:
Svetach [21]3 years ago
4 0

Answer:

-3/2x +2

Step-by-step explanation:

To find slope: y value - y value over x value - x value

5-(-4) = 9

-2 -4 = -6

9/-6 = -3/2 after you divide each by gcf of 3

y intercept : plug in your y and x values (and your slope ) into the equation: y = mx+b (slope intercept form)

point 1 (-2,5): 5 = (-3/2)(-2)+b

                     5 = 3+b (subtract 3 from both sides)

                      2 = b (your y intercept)

lozanna [386]3 years ago
3 0

Answer: y=\frac{-3}{2}x+2

Step-by-step explanation:

1. Find the slope of the two coordinates by using the slope-intercept form:

    Slope intercept form=(y₂-y₁)/(x₂-x₁)

    (-4-5)/(4-(-2))

    (-9)/(4+2)

    -9/6 or -3/2

2. Now that we have the slope for these two coordinates, plug them into the point-slope formula.

    Equation for point-slope: y-y₁=m(x-x₁), where m=slope

    y-5=\frac{-3}{2}(x-(-2)

    y-5=\frac{-3}{2}(x+2)

    y-5=\frac{-3}{2}x-\frac{6}{2}

    y-5=\frac{-3}{2}x-3

(Add 5 to both sides)

    y=\frac{-3}{2}x+2

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Seventh graders collected some gold sand on a class field trip.
satela [25.4K]

Answer:

Class 7A collected 4.8 ounces of pure gold.

Step-by-step explanation:

<u>Key skills required are: Percentages, Multiplication</u>

<u />

  1. We only need the information about Class 7A. They collected 40 oz that contains 12% gold.
  2. In other words, this means that 12% of that 40 oz gold sand is pure gold.

Here we have to do 12% x 40 to find the number of oz of pure gold. We first have to convert 12% into a decimal. Divide it by a 100 (or move the decimal point 2 places to the left) and you will get 0.12.

<em>Do 0.12 x 40 and you will get 4.8</em>

Therefore, there are 4.8 oz of pure gold in Class 7A's gold sand

3 0
3 years ago
-6 = n/2 - 10 show work
valina [46]

Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS.

First, add 10 to both sides

-6 (+10) = n/2 - 10 (+10)

10 - 6 = n/2

4 = n/2

Next, isolate the n. Multiply 2 to both sides

4(2) = n/2(2)

n = 4(2)

n = 8

8 is your answer

hope this helps

5 0
4 years ago
Jose borrowed $20,000 to buy a new speed boat. The interest rate on his loan is 5%. He will pay it back in 3 years. How much int
Fed [463]
There will be $3000 interest. He will pay $23,000 total.
Hope this helps and please give brainliest!
3 0
4 years ago
3.a.Sketch a line through the point
Ierofanga [76]

Answer:

Step-by-step explanation:

Let the equation of the line passing through a point (x', y') and slope 'm' is,

y - y' = m(x - x')

Since x-value increases by 3,

Δx = 3

And y-value decreases by 2,

Δy = -2

Therefore, slope = \frac{\triangle y}{\triangle x}

Slope = -\frac{2}{3}

Equation of the line passing through (-2, 5) and slope = -\frac{2}{3} will be,

y - 5 = -\frac{2}{3}(x+2)

y = -\frac{2}{3}x-\frac{4}{3}+5

y = -\frac{2}{3}x+\frac{11}{3}

y = \frac{1}{3}(-2x+11)

Table for input-output values will be,

x      -2         0         1          2         3

y       5        3.7       3        2.3      1.7    

We can plot these points to get the line on a graph.

7 0
4 years ago
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<h2>NOW FROM THE TOP MAKE IT DROP, THATSA N WAP WAP WAP.</h2>
4 0
3 years ago
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