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vlabodo [156]
3 years ago
7

Evaluate the expression: for y = 2 + 3x when x=4. What does y=?

Mathematics
1 answer:
lora16 [44]3 years ago
4 0

Answer:

y = 14

Step-by-step explanation:

Plug in 4 as x into the equation:

y = 2 + 3x

y = 2 + 3(4)

Simplify:

y = 2 + 12

y = 14

So, when x = 4, y = 14.

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EASY POINTS! WILL GIVE BRAINLIEST!
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The answer to this question would be 6 and the property would be the identity property

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Please, I need to know how this question is done. please
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8 0
3 years ago
Is anyone knows the answer? Thanks. What line has a slope of 0 and goes through (5, -8)
larisa [96]
Slope = 0
⇒ It is a horizontal like that cuts through the y-axis

At point (5, -8), y = -8
The equation of the line is y = -8

-----------------------------------------------
Answer: y = -8
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8 0
3 years ago
Solve any method: 9x^2+9x=4??
Gala2k [10]
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ax^2+bx+c
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6 0
3 years ago
Read 2 more answers
A leprechaun places a magic penny under a girls pillow. The next night there are 2 magic pennies under her pillow. The following
kiruha [24]

Answer:

<em>After </em><em>47</em><em> days she will have more than 90 trillion pennies.</em>

Step-by-step explanation:

At the beginning there was 1 penny. At the second day the amount of pennies under the pillow became 2.

The amount of pennies doubled each day. So the series is,

1,2,4,8,16,32,.....

This series is in geometric progression.

As the pennies from each of the previous days are not being stored away until more pennies magically appear so the sum of series will be,

S_n=\dfrac{a(r^n-1)}{r-1}

where,

a = initial term = 1,

r = common ratio = 2,

As we have find the number of days that would elapse before she has a total of more than 90 trillion, so

\Rightarrow 90\times 10^{12}\le \dfrac{1(2^n-1)}{2-1}

\Rightarrow 90\times 10^{12}\le \dfrac{2^n-1}{1}

\Rightarrow 90\times 10^{12}\le 2^n-1

\Rightarrow 2^n\ge 90\times 10^{12}+1

\Rightarrow \log 2^n\ge \log (90\times 10^{12}+1)

\Rightarrow n\times \log 2\ge \log (90\times 10^{12}+1)

\Rightarrow n \ge \dfrac{\log (90\times 10^{12}+1)}{\log 2}

\Rightarrow n \ge 46.4

\Rightarrow n\approx 47


8 0
3 years ago
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