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LuckyWell [14K]
3 years ago
12

Can someone please help me with this which quadratic equation has two solutions or zeros​

Mathematics
1 answer:
ivann1987 [24]3 years ago
4 0
It has to be the second one and it’s part of that answer or maybe it’s the third one
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The total price of an article is $7.02, including tax. If the tax rate is 8%, what is the retail price of the article?
masya89 [10]
Lets price of article = x
Tax  is 8%  of article = 0.08x

x+0.08x=7.02
1.08x=7.02
x=7.02/1.08 
x=6.5
The retail price is $6.50.
4 0
3 years ago
A standard piece of paper is 0.05 mm thick. Let's imagine taking a piece of paper and folding the paper in half multiple times.
tatyana61 [14]

Answer:

(a)g(n)=0.05\cdot 2^n

(b)g^{-1}(n)=\log_{2}20g(n)

(c)43 times

Step-by-step explanation:

<u>Part A</u>

The paper's thickness = 0.05mm

When the paper is folded, its width doubles (increases by 100%).

The thickness of the paper grows exponentially and can be modeled by the function:

g(n)=0.05(1+100\%)^n\\\\g(n)=0.05\cdot 2^n

<u>Part B</u>

<u />g(n)=0.05\cdot 2^n\\2^n=\dfrac{g(n)}{0.05}\\ 2^n=20g(n)\\$Changing to logarithm form, we have:\\\log_{2}20g(n)=n\\$Therefore:\\g^{-1}(n)=\log_{2}20g(n)<u />

<u />

<u>Part C</u>

If the thickness of the paper, g(n)=384,472,300,000 mm

Then:

g^{-1}(n)=\log_{2}20g(n)\\g^{-1}(n)=\log_{2}20\times 384,472,300,000\\=\dfrac{\log 20\times 384,472,300,000}{\log 2} \\g^{-1}(n)=42.8 \approx 43\\n=43

You must fold the paper 43 times to make the folded paper have a thickness that is the same as the distance from the earth to the moon.

3 0
3 years ago
Which Factors would simplify in this expression?
kolbaska11 [484]

Answer:

(x+6)

Step-by-step explanation:

because you have ( x+6) on bottom of the first equation and on the top on the second equation

7 0
3 years ago
Solve 3x + 8 = 2x + 21
iren [92.7K]
<h2>Answer:</h2>

<h3>x = 13 </h3><h2>Step-by-step explanation:</h2>

<h3>3x+8=2x+21</h3><h3>solve for x3x8-2x+21</h3><h3>x8=21</h3><h3>x=21-8=13</h3><h3>solution is x=13/</h3>

<h2>HOPE IT HELPS!!!</h2>

<h2>PLZ I NEED BRAINLIEST!!</h2>

6 0
3 years ago
Read 2 more answers
Slope of M(-2, 3), N(7 -4)
Mila [183]

Answer:

-\frac{7}{9}

Step-by-step explanation:

We find slope by; change in y ÷ change in x,

Change in y = -4 - 3 = -7

Change in x = 7 - - 2 = 9

Slope of line MN = -7 ÷ 9 = -\frac{7}{9}

8 0
3 years ago
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