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vovangra [49]
3 years ago
7

Find the value of the "?"

Mathematics
1 answer:
Andru [333]3 years ago
3 0

Answer:

45

Step-by-step explanation:

Set up ratios for 2 similar triangles:

20/28=x/x+18

Cross multiply

28x=20x+360

8x=360

x=45

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Is there a way to estimate your semester grade if you don't know your midterm grade? It's a extra credit question for math, and
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No but there's a website where you can calculate what grade you need in order to get a certain grade in the class. Just add the extra credit grade to the grade you have first. 
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Just copy+paste this URL into your search bar:
http://finalexamcalculator.com/
6 0
4 years ago
Pls help
creativ13 [48]
1st one it says "Jackson street is one block east of Washington st and is parallel to it" try figuring out what parallel is then try graphing Jackson st. 
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5 0
4 years ago
Can someone help me with the first question please
snow_lady [41]

Answer:

  (c)  5y -17x +99 = 0

Step-by-step explanation:

The median of a triangle is the line through a vertex and the midpoint of the opposite side. The median of ΔXYZ from vertex Y will be the line through point Y and the midpoint of XZ.

<h3>Midpoint</h3>

The midpoint of XZ is the average of the coordinates of X and Z.

  M = (X +Z)/2

  M = ((1, -2) +(8, -7))/2 = (9, -9)/2 = (4.5, -4.5)

<h3>Line through two points</h3>

The slope of the median can be found using the slope formula:

  m = (y2 -y1)/(x2 -x1)

The slope of line YM is ...

  m = (-4.5 -4)/(4.5 -7) = -8.5/-2.5 = 17/5

The point-slope form of the equation of a line is ...

  y -k = m(x -h) . . . . . . line with slope m through point (h, k)

The line with slope 17/5 through point Y(7, 4) is ...

  y -4 = 17/5(x -7)

Subtracting the right side, and multiplying by 5 gives ...

  5(y -4) -17(x -7) = 0

  5y -17x +99 = 0 . . . . equation of the median through Y

3 0
2 years ago
Nick expects to work 25 hours per week during the next school year For some reason. If he makes $7.85 per hour and works the ent
Dvinal [7]
3:$10,205 is the answer
3 0
3 years ago
Read 2 more answers
Reduce to the lowest terms by canceling -14/9 times -3/7
maksim [4K]

Answer:

2/3

Explanation:

Given the below;

\frac{-14}{9}\times\frac{(-3)}{7}

We can see from the above that 9 is divisible by 3 and that 14 is divisible by 7, let's go ahead and reduce to the lowest term as shown below;

\frac{-14}{9}\times\frac{(-3)}{7}=\frac{-2}{3}\times\frac{(-1)}{1}=\frac{2}{3}

5 0
1 year ago
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