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3 years ago

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

Step-by-step explanation:

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

<u />

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

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

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