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iVinArrow [24]
2 years ago
14

when 7 times a number is decreased by 13, the answer is the same as 5 times the number is increased by 5. what was the number?

Mathematics
2 answers:
Aliun [14]2 years ago
6 0

Answer:

I got 9.

Step - By - Step Explanation:

7x - 13 = 5x + 5

7x = 5x + 18

2x = 18

x = 18 ÷ 2 = 9

x = 9

Brilliant_brown [7]2 years ago
5 0
58
7(x) - 13 = 5(x) + 5
7x - 91 = 5x + 25
7x - 5x - 91 = 25
2x - 91 = 25
2x = 25 + 91
2x = 116
x = 58
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Construct the exponential function that contains the points (0,2) and (3,54)
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The exponential function that passes through (0,2) and (3,54) is a growth function

The exponetial function is y = 2 * 3^x

<h3>How to construct the exponential function?</h3>

The points are given as:

(x,y) = (0,2) and (3,54)

An exponential function is represented as:

y = ab^x

Substitute the points in the equation

2 = ab^0 and 54 = ab^3

Solve 2 = ab^0

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Substitute 2 for a in 54 = ab^3

54 = 2b^3

Divide by 2

27 = b^3

Take the cube roots of both sides

b = 3

So, we have:

y = ab^x

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y = 2 * 3^x

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brainly.com/question/24077767

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Which number replaces the box to make this a true number sentence?
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Graph the system of equations on your graph paper to answer the question.
scZoUnD [109]
<span>y=x-4
y=-x+6 
---------------------
Substitute x - 4 for y in </span>y=-x+6 
x-4=-x+6<span>
--------------------------------
Add X on each side
</span><span>x-4+x</span>=-<span>x+6+x
</span>2x - 4 = 6
--------------------------------------
Add 4 on each side
<span>2x-4+4</span>=<span>6+4
</span>2x = 10
------------------------------------------------
Divide by 2 on each side
2x ÷ 2 = 10 ÷ 2
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Now we have X
================================================================
To find Y we substitute 5 for x in y=<span>x-<span>4
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-----------------------------------------------------
Your answers are Y = 1 and X = 5

8 0
3 years ago
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