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zloy xaker [14]
3 years ago
15

Solve the simultaneous equations 5y−4x=8 y+x=7 x= ? y= ?

Mathematics
2 answers:
ddd [48]3 years ago
7 0
Y=4
X=3
5(4)-4(3)=8
4+3=7
inna [77]3 years ago
4 0

Answer:

x=3 y=4

Step-by-step explanation:

5(4)=20

4(3)= 12

20-12=8

4+3=7

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Compute the total and annual returns on the following investment. Twenty years after purchasing shares in a mutual fund for ​$63
lesya [120]

Answer:

  • 76.2% total return
  • 2.87% annual return

Step-by-step explanation:

The total return is the rate of increase over the whole period:

  % change = (11100/6300 -1) × 100% = 76.2%

The annual return is the rate of return that gives this growth over 20 years:

  (1 +r)^20 = 1 +76.2%

  r = 1.762^(1/20) -1 ≈ 2.87%

The total return is about 76.2%; the annual return is about 2.87%.

7 0
3 years ago
Slope intercept form of slope 5 and (2,3)<br><br> explain please!
Bingel [31]

Answer:

<h2>y = 5x - 7</h2>

Step-by-step explanation:

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept

We have the slope m = 5. Therefore we have the equation

y=5x+b

Put the coordinates of a given point (2, 3) to the equation:

x = 2, y = 3

3=5(2)+b

3=10+b            <em>subtract 10 from both sides</em>

-7=b\to b=-7

Finally:

y=5x-7

7 0
3 years ago
A line passes through (1, –5) and (–3, 7).
son4ous [18]
A.  First, find the slope, which  is -0.5, and then insert it into point-slope form, which is y-y1=m(x-x1), or y-1=-0.5(x+5). That's point-slope form.


B.  First, distribute -0.5 to both terms  in the parenthesis, to get y-1=-0.5x-2.5, and lastly add 1 to both sides to get the slope-intercept form of y=-0.5x-1.5
4 0
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KatRina [158]
Area will be length*width
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Reptile [31]
Richard is 29 and teo is 9
6 0
2 years ago
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