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4 years ago

How can I change 19/4 in a mixed number

2 answers:

7 0

Or you could easily divide the denominator (4) into 19 and get your answer. since 4 doesnt go into 19 evenly there is going to be a decimal. so see how mang places the decimal goes out to. EX: tenths, hundredths, thousandths ect. after you have calculated that answer. put the number over tne value. for EX: 3 hundreths would be 3 over a 100. ect. nect calculate how many wholes there are and you good. Last EX: 2 wholes and 3 over 100..really simple, but I may have made it sound a tad confusing. but its really simple.

ivolga24 [154]4 years ago

5 0

19/4 can also be written as 16/4+3/4 so the mixed fraction will be 4+3/4...in other words 4 3/4. And to check it, you can multiply the denominator (here, 4) by the whole number(here, 4) and then add the numerator(here, 3)
Which adds up to 19/4! :)

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A diver is standing on a platform 7 ft above the pool.

VikaD [51]

Answer:

13 ft

Step-by-step explanation:

We assume your height formula is intended to be ...

h(t) = -16t² +20t +7

This will have its maximum value at ...

t = -b/(2a) = -20/(2(-16)) = 5/8

The height at that time is ...

h(5/8) = (-16(5/8) +20)(5/8) +7 = 10(5/8) +7 = 106/8 = 53/4 = 13 1/4 . . . ft

To the nearest whole foot, the diver will reach a height of 13 ft above the pool.

_____

<em>Additional comments</em>

The standard form quadratic can be described as ...

f(x) = ax² +bx +c

The extreme value occurs at ...

x = -b/(2a)

This can also be written as ...

f(x) = (ax +b)x +c

which can make it easier to evaluate for some numerical value of x.

6 0

3 years ago

Jessie served 19 pints of orange juice at her party. How many quarts of orange juice did she serve?

Reika [66]

Answer:

9.5

Explanation:

1 pint is 0.5 of a quart so if you multiply 0.5 by 19 it will be 9.5 quarts. Hope this helps..

3 0

3 years ago

Oliver completed his project in no more than twice the amount of time it took Karissa to complete her project. Oliver spent 4 1/

Kryger [21]

Answer:

first you find out what is amount of time that k is then
divide, multiply, subtract, and then you add if you want to

Step-by-step explanation:

5 0

4 years ago

Suppose μ1 and μ2 are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of bra

Stella [2.4K]

Answer:

The 95% confidence interval would be given by $-23.44 \leq \mu_1 -\mu_2 \leq -8.16$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X_1 =114.1$ represent the sample mean 1

$\bar X_2 =129.9$ represent the sample mean 2

n1=5 represent the sample 1 size

n2=2 represent the sample 2 size

$s_1 =5.08$ sample standard deviation for sample 1

$s_2 =5.37$ sample standard deviation for sample 2

$\mu_1 -\mu_2$ parameter of interest.

Confidence interval

The confidence interval for the difference of means is given by the following formula:

$(\bar X_1 -\bar X_2) \pm t_{\alpha/2}\sqrt{\frac{s^2_1}{n_1}+\frac{s^2_2}{n_2}}$ (1)

The point of estimate for $\mu_1 -\mu_2$ is just given by:

$\bar X_1 -\bar X_2 =114.1-129.9=-15.8$

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n_1 +n_2 -1=5+5-2=8$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,8)".And we see that $t_{\alpha/2}=\pm 2.31$