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4 years ago

#3 please I don't understand

Mathematics

2 answers:

hjlf4 years ago

4 0

7/10 Is Like Dividing 7 By 10 Which (In Decimal Form) Is .70.

Times .7 By .75 Then Add That Result To 7.5

makkiz [27]4 years ago

3 0

Answer is A. 1 and 21/40

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LOOK AT THIS!!!!!!!!!!!!!!!!!!!!!!!

Gelneren [198K]

Answer:

8 x 1^2 = 8

have a good day and be safe

-Hops

8 0

3 years ago

Round 59.09 to the nearest whole number

MariettaO [177]

Answer:

Step-by-step explanation:

It goes to 59 because the number in the decimals place is a 0, for 0-4 you round down and for 5-9 you round up.

8 0

3 years ago

Read 2 more answers

The average daily volume of a computer stock in 2011 was ų=35.1 million shares, according to a reliable source. A stock analyst

Shtirlitz [24]

Answer:

The null hypothesis is $H_o : \mu = 35 .1 \ million \ shares$

The alternative hypothesis $H_a : \mu \ne 35.1\ million \ shares$

The 95% confidence interval is $27.475 < \mu < 37.925$

Step-by-step explanation:

From the question the we are told that

The population mean is $\mu = 35.1 \ million \ shares$

The sample size is n = 30

The sample mean is $\= x = 32.7 \ million\ shares$

The standard deviation is $\sigma = 14.6 \ million\ shares$

Given that the confidence level is $95\%$ then the level of significance is mathematically represented as

$\alpha = 100-95$

$\alpha = 5\%$

=> $\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table

The value is $Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{ \sigma }{\sqrt{n} }$

substituting values

$E = 1.96 * \frac{ 14.6 }{\sqrt{30} }$

$E = 5.225$

The 95% confidence interval confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

substituting values

$32.7 - 5.225 < \mu < 32.7 + 5.225$

$27.475 < \mu < 37.925$

6 0

3 years ago

One pound of candies costs $3.50.<br><br> How much will we have to pay for 4.5 lb?

Inessa [10]

Answer:

$15.75

Step-by-step explanation:

Multiply the cost of one pound, 3.50 times how many we want, 4.5

3.5×4.5=15.75

5 0

3 years ago

Read 2 more answers

Annie visits a redwood forest she is amazed to read that a certain tree trunk has a diameter of 25 feet what is the approximate

babunello [35]

Answer: 78.5 ft

Step-by-step explanation: 25 times 3.14

4 0

3 years ago