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3 years ago

Can someone plz help me?!

Mathematics

2 answers:

ivolga24 [154]3 years ago

6 0

Answer:

all work is shown and pictured

Dmitry_Shevchenko [17]3 years ago

3 0

Answer:

x⁶y³z¹²

Step-by-step explanation:

According to the Six Exponential Rules, whenever you have an exponent on the outside of a polynomial, you multiply the exponents.

If you are ever in need of assistance, do not hesitate to let me know by subscribing to my You-Tube channel [USERNAME: MATHEMATICS WIZARD], and as always, I am joyous to assist anyone at any time.

**I have a video that explains all the six exponential rules. It is titled "Six Exponential Procedures". I encourage you to watch the video and gain alot more knowledge from it so you can better understand the concept.

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Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the pre

artcher [175]

Answer: The proportion of new car buyers that trade in their old car has statistically significantly decreased.

Step-by-step explanation:

Since we have given that

p = 48% = 0.48

n = 115

x = 46

So, $\hat{p}=\dfrac{46}{115}=0.40$

So, hypothesis would be

$H_0:\ p=\hat{p}\\\\H_a:p$

So, test value would be

$z=\dfrac{p-\hat{p}}{\sqrt{\dfrac{p(1-p)}{n}}}\\\z=\dfrac{0.48-0.40}{\sqrt{\dfrac{0.48\times 0.52}{115}}}\\\\z=\dfrac{0.08}{0.0466}\\\\z=1.72$

At 10% level of significance, critical value would be

z= 1.28

Since 1.28 < 1.72

So, we will reject the null hypothesis.

Hence, the proportion of new car buyers that trade in their old car has statistically significantly decreased.

6 0

3 years ago

What is the value of f(7)

Lelu [443]

Answer:

7f

Step-by-step explanation:

You move 7 to the left of f.

This makes the exact value of f(7), 7f.

8 0

3 years ago

Simplify the problem.

lesya [120]

Answer:

Option 4: 4¹¹

Step-by-step explanation:

Looking at the problem, I need to work out 4⁴ squared first, which is the same as 4⁸. Then multiply that by 4³ to get 4¹¹. What I did was simply add 3 + (4 * 2), which is 11.

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2 years ago

8 less than one third of x is y.

Andre45 [30]

1/3x - 8 = y <== ur equation

4 0

2 years ago

Read 2 more answers

Write in standard form a)0.00000678 b)3170000

otez555 [7]

Standard Form:

a) 0.00000678