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3 years ago

Condense to a single logarithm: 4 log9 11 - 4 log9 7.

Mathematics

1 answer:

Natali [406]3 years ago

7 0

Answer: Log9,(11/7)^4

Step-by-step explanation:

according to the rules of logarithm

1)Subtraction sign(-) becomes division(÷),while addition(+)becomes multiplication (x)

2) the number in front of the log figure becomes an indices

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PLEASE HELP RIGHT AWAY WILL MARK BRAINLIEST!

Blababa [14]

Answer:

20/48 = 42%

Step-by-step explanation:

Number of beige tiles

48 - 8 - 6 - 9 - 5
40 - 6 - 9 - 5
34 - 9 - 5
25 - 5
20 beige tiles

Probability (Beige)

No. of beige tiles / Total no. of tiles
20/48 = 42%

3 0

2 years ago

Read 2 more answers

An automobile manufacturer has given its van a 47.2 miles/gallon (MPG) rating. An independent testing firm has been contracted t

7nadin3 [17]

Answer:

The test statistics is $t = -1.7$

The Null and Alternative hypothesis are

$H_o : \mu = 47.2$ and $H_a : \mu \ne 47.2$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 47.2 miles/gallon(MPG)$

The sample size is $n = 250 \ van$

The sample mean is $\= x = 47.0$

The sample standard deviation is $\sigma = 1.9$

The level of significance is $\alpha = 0.02$

Given that the value which the manufacturer gave the automobile is 47.2 and it is believed that this is not correct, then

The Null Hypothesis is

$H_o : \mu = 47.2$

The alternative Hypothesis is

$H_a : \mu \ne 47.2$

The test statistics can be mathematically evaluated as

$t = \frac{\= x- \mu}{\frac{\sigma }{\sqrt{n} } }$

substituting values

$t = \frac{\= 47- 47.2}{\frac{1.9 }{\sqrt{250} } }$

$t = -1.7$

7 0

3 years ago

- m + 62m2 + 1200 simplified

Gekata [30.6K]

3(41x+400) simplified = 123x+1200

3 0

3 years ago

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Last year, about 2,400 people participated in a local Fourth of July parade. This year, about 3,200 people participated. What wa

stich3 [128]

Answer:

800 people a year

Step-by-step explanation:

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3 years ago

An aquarium tank can hold 6300 liters of water. There are two pipes that can be used to fill the tank.The first pipe alone can f

liq [111]

Answer: it will take them 28 minutes to fill the tank.

Step-by-step explanation:

The first pipe alone can fill the tank in 84 minutes. This means that the rate at which the first pipe fills the tank per minute is 1/84

The second pipe can fill the tank in 42 minutes by itself. This means that the rate at which the second pipe fills the tank per minute is 1/42

If they work together, they would work simultaneously and their individual rates are additive. This means that their combined rate of filling the tank would be

1/84 + 1/42

Assuming it takes t hours for both pipes to fill the tank working together, the working rate per minute would be 1/t. Therefore,

1/84 + 1/42 = 1/t

3/84 = 1/t

t = 84/3

t = 28 minutes

6 0

3 years ago

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