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serious [3.7K]
3 years ago
6

7x + 4y = 5 7x + 4y = 12

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
5 0

Answer:

No answer

Step-by-step explanation:

Let's say I would like to eliminate x in order to find the value of y.So I multiply the second equation by (-1), but than I also eliminate y. Therefore, this system of equations doesn't have a solution.

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2^x + 3^y = 9<br>2^x+1 - 3^y+1=8<br>find x and y​
Taya2010 [7]

Suppose :

2^x = t ..**&**.. 3^y = u

_____________________________

t + u = 9 × 3 3t + 3u = 27

=====》

2t - 3u = 8 2t - 3u = 8

+ __________

5t = 35

5 × t = 5 × 7

t = 7

&

u = 2

________________________________

Thus :

2^x = 7 ===》 x = Log _ 2 { 7 }

3^y = 2 ===》 y = Log _ 3 { 2 }

8 0
3 years ago
What are 91.6%,0.91,11/12,0.917,9.2% least to greatest
erik [133]

Answer:

9.2, 11/12, 91.7, 91.6, .91

Step-by-step explanation:

7 0
3 years ago
Write each equation in standard form. y=0.5x+3
dimulka [17.4K]
The equation in standard form is 0.5x-y=-3.
6 0
2 years ago
a walking path across a park is represented by the equation y=-2x-7. A new path will be built perpendicular to this path.The pat
jonny [76]

Answer:

The equation that represents the new path is y=(1/2)x-2

Step-by-step explanation:

step 1

Find the slope of the give line

we have

y=-2x-7

so

the slope m is equal to

m=-2

step 2

Find the slope of the perpendicular line to the given line

Remember that

If two lines are perpendicular, then their slopes are opposite reciprocal of each other

so

we have

m=-2 -----> slope of the given line

therefore

The slope of the perpendicular line is equal to

m=1/2

step 3

With m=1/2 and the point (-2,-3) find the equation of the line

y-y1=m(x-x1)

substitute

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

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

y=(1/2)x-2 -----> equation that represent the new path

8 0
3 years ago
Read 2 more answers
Please Help I Don't Understand.
lyudmila [28]

BE and CD are parallel, so the triangles ABE and ACD are similar. Then the following relation holds:

AE/AD = AB/AC

10/(10 + 8) = x/(x + 6)

Solve for x :

10 (x + 6) = x (10 + 8)

10x + 60 = 18x

8x = 60

x = 60/8 = 7/5

6 0
2 years ago
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