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aniked [119]
3 years ago
11

Match the y-coordinate with the given x-coordinate for the equation y = log2x.

Mathematics
2 answers:
In-s [12.5K]3 years ago
5 0

Step-by-step explanation:

y = log2 x

Convert to exponential form

x = 2^y

when x = 8 , 8 = 2^y  so y = 3

          x = 4 , 4 = 2^y so y = 2

the other values are found in the same fashion.

x = 2 , y = 1

x = 1 y = 0

x = 1/2, y = -1


solmaris [256]3 years ago
3 0

Answer:

1,5,3,4,2

Step-by-step explanation:

thats the order of the answers

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Willa says the slope of the graph is - 3. What error did
Yuri [45]

Answer:B

Step-by-step explanation: “she counted the squares instead of using the scale” by looking at the graph the first coordinates are (4,24) and instead of doing that Willa counted the squares.

5 0
3 years ago
mrs. Williams uses the following recipe for crispy rice treats. She decided to make 2/3 of the recipe. 2 cups of melted butter,
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To find how much she needs of every ingredient, multiply every ingredient by 2/3.

Butter: 2•2/3=4/3=1&1/3 cups
Marshmallows: 24•2/3=16 oz
Cereal: 13•2/3= 26/3=8&2/3 cups
3 0
3 years ago
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What is 1997 from 2014????????????
katen-ka-za [31]
What? That doesn't make sence! Any way if you mean 1997 to 2014 how many years.
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3 years ago
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-6 (X -7) +6 (X +5) = 73
AleksAgata [21]

Answer:

No Solution.

Step-by-step explanation:

-6(x-7)+6(x+5)=73

-6x+42+6x+30=73

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4 0
3 years ago
A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past
Vadim26 [7]

Answer:

We conclude that deluxe tire averages less than 50,000 miles before it needs to be replaced which means that the claim is not supported.

Step-by-step explanation:

We are given that a particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past studies of this tire, the standard deviation is known to be 8000.

From the 28 tires surveyed, the mean lifespan was 46,500 miles with a standard deviation of 9800 miles.

<u><em>Let </em></u>\mu<u><em> = average miles for deluxe tires</em></u>

So, Null Hypothesis, H_0 : \mu \geq 50,000 miles   {means that deluxe tire averages at least 50,000 miles before it needs to be replaced}

Alternate Hypothesis, H_A : \mu < 50,000 miles    {means that deluxe tire averages less than 50,000 miles before it needs to be replaced}

The test statistics that will be used here is <u>One-sample z test statistics</u> as we know about population standard deviation;

                                  T.S.  = \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = sample mean lifespan = 46,500 miles

            \sigma = population standard deviation = 8000 miles

            n = sample of tires = 28

So, <u><em>test statistics</em></u>  =  \frac{46,500-50,000}{\frac{8000}{\sqrt{28} } }

                               =  -2.315

The value of the test statistics is -2.315.

Now at 5% significance level, the z table gives critical value of -1.6449 for left-tailed test. Since our test statistics is less than the critical value of z as -2.315 < -1.6449, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that deluxe tire averages less than 50,000 miles before it needs to be replaced which means that the claim is not supported.

4 0
3 years ago
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