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balu736 [363]
3 years ago
6

DOING A QUIZ HELP!!!! which one is correct

Mathematics
1 answer:
SpyIntel [72]3 years ago
8 0
I think it’s B.
But I’m sure
I took this class last year and can’t remember
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Solve the system of equations by graphing on your own paper. Write the
Verdich [7]

Answer:

(9, -1)

Step-by-step explanation:

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3 years ago
Graph the linear equation find three points that solve the equation then plot on the graph -x-y=0
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On the y axis it'll just be a straight line running down the middle
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3 years ago
Functions and their Properties<br><br>Practice<br>Need help​
lilavasa [31]

Answer:

g(n-7)=\frac{n^{2}-14n+43}{7n-49}  → (a)

Step-by-step explanation:

We need to evaluate g(n - 7), where

  • g(x)=\frac{x^{2}-7}{7x}

Replace x by (n - 7) to evaluate it

∵ x = (n - 7)

∴ g(n-7)=\frac{(n-7)^{2}-6}{7(n-7)}

→ Let us find (n - 7)²

∵ (n - 7)² = (n - 7)(n - 7) = (n)(n) + (n)(-7) + (-7)(n) + (-7)(-7)

∴ (n - 7)² = n² + (-7n) + (-7n) + 49 = n² + -14n + 49

∴ (n - 7)² = n² - 14n + 49

→ Find 7(n - 7)

∵ 7(n - 7) = 7(n) - 7(7)

∴ 7(n - 7) = 7n - 49

→ Now let us write then in the form above

∵ g(n-7)=\frac{n^{2}-14n+49-6}{7n-49}

→ Add the like terms in the numerator

∴  g(n-7)=\frac{n^{2}-14n+43}{7n-49}

The correct answer is (a)

5 0
4 years ago
Let 4^x-3^(x-1/2)=3^(x+1/2)-2^(2x-1) find x=?
Gekata [30.6K]

4^x-3^(x-1/2)=3^(x+1/2)-2^(2x-1)

4^x  - 3^x * 3^-1/2 = 3^x * 3^1/2 - 2^2x * 2^-1

2^2x  + 2^2x * 1/2 = 3^x * 3^1/2 + 3^x * 3^-1/2

2^2x(1 + 1/2) = 3*x( 3^1/2 + 3^-1/2)

3/2 * 2^2x =  2.3094 * 3^x

ln 1.5 + 2x ln 2 = ln 2.3094 + x ln 3

2x ln 2 - x ln3 = ln 2,3094 - ln 1.5

1.3863 x - 1.0986 x =  0.4315

0.2877x = 0.4315

x =  1.5   Answer




6 0
4 years ago
15.<br> Find the perimeter of the smaller figure given that the two figures are similar.
Maksim231197 [3]
Let: s1 = one of the sides of the larger figure
: s2 = one of the sides of the smaller figure
: p1 = perimeter of the larger figure
: p2 = perimeter of the smaller figure
s1/s2 = p1/p2. The ratio of the corresponding sides is the same as the perimeter of the figures.
p1 = 30 + 30 + 35 + 5 + 10 = 110

s1 = 30 and s2 = 18
p1 = 110 and p2 is ?

s1/s2 = p1/p2
30/18 = 110/?
Crisscross ==== 30*? = 18*110

30*? = 1980
Divide both side by 30 ==== 30*?/30 = 1980/30
? = 66
5 0
3 years ago
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