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Sedaia [141]
4 years ago
9

X/4+7=12 what is the answer

Mathematics
1 answer:
Nuetrik [128]4 years ago
3 0
X/4+7=12
x/4+7-7=12-7
x/4=5
x/4*4=5*4
x=20
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The difference of 9 times a number and 2 is 67. Which equation below can be used to find the unknown number?
RideAnS [48]
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10 over the power of negative 4

4 0
3 years ago
Please help
Firlakuza [10]

Answer:

Step-by-step explanation:

y = -2/3 x       multiply both sides the first equation by 6

6y = -4x                    Add 4x to both sides.

6y + 4x = 0

<u>-9y +4x = - 40   </u>        Subtract the bottom equation

15y =  - 40                 Divide by 15

y = -40/15

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======================

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4 0
4 years ago
Which equation represents an exponential function that passes through the point (2, 80)?
s2008m [1.1K]

Answer:

D) f(x) = 5(4)ˣ

Explanation:

(x, y) = (2, 80)

Check by inserting x = 2

A) y = 4(x)⁵ = 4(2)⁵ = 128

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C) y = 4(5)ˣ = 4(5)² = 100

D) y = 5(4)ˣ = 5(4)² = 80 - passes

An exponential equation is in a(b)ˣ format, so only f(x) = 5(4)ˣ is an exponential equation which passes the point (2, 80)

5 0
2 years ago
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Lemur [1.5K]
N/100*260=39

260n=3,900

n=3,900/260

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=390/26

=15

39 is 15% of 260.
7 0
3 years ago
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