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salantis [7]
3 years ago
14

What is the equation for 3.24 and 2.4​

Mathematics
2 answers:
Fudgin [204]3 years ago
6 0
7.776 is the correct answer
Rashid [163]3 years ago
5 0

Answer:7.776

Step-by-step explanation:

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R
wolverine [178]

Answer:

Ivy is 6 years old and Rose is 12 years old.

Step-by-step explanation:

To solve this problem, two variables are necessary since we have two unknown variables: Ivy's age and Rose's age.

Ivy's age will be x

and Rose's age will be y

"Ivy is half as old as her sister":

x=\frac{y}{2}

this will be our <u>fist equation.</u>

"In six years, Ivy will be two-thirds as old as Rose"

in six years Ivy will have x+6 years, and Rose will have y +6 years, so for this sentence we have the equation:

x+6=\frac{2}{3}(y+6)

this will be our <u>second equation.</u>

Substituting the value of x from the first equation into the second, and solving for y(Rose):

\frac{y}{2}+6=\frac{2}{3} (y+6)\\\frac{y+12}{2} =\frac{2}{3} (y+6)\\y+12=\frac{4}{3} (y+6)\\3(y+12)=4(y+6)\\3y+36=4y+24\\36-24=4y-3y\\12=y

Rose is 12 years old.

and Ivy (using the fist equation):

x=\frac{12}{2}=6

Ivy is 6 years old.

6 0
3 years ago
In an effort to estimate the mean of amount spent per customer for dinner at a major Lawrence restaurant, data were collected fo
larisa86 [58]

Answer:

The 99% confidence interval for the population mean is 22.96 to 26.64

Step-by-step explanation:

Consider the provided information,

A sample of 49 customers. Assume a population standard deviation of $5. If the sample mean is $24.80,

The confidence interval if 99%.

Thus, 1-α=0.99

α=0.01

Now we need to determine z_{\frac{\alpha}{2}}=z_{0.005}

Now by using z score table we find that  z_{\frac{\alpha}{2}}=2.58

The boundaries of the confidence interval are:

\mu-z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80-2.58\times \frac{5}{\sqrt{49}}=22.96\\\mu+z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80+2.58\times \frac{5}{\sqrt{49}}=26.64

Hence, the 99% confidence interval for the population mean is 22.96 to 26.64

3 0
3 years ago
A Student with N600 pocket money was spent on the following; Book N50, Pen N80, Maths Set N270, Bag N150, Food N50; the angles t
Vera_Pavlovna [14]
<span>Total pocket money: N600 Spent as follows: Books N50 Pen N80 Maths set N270 Bag N150 Food N50 To find: Angles that pen and food represent on pie chart. Solution: Pie is made on circle, and sum of angles of a circle is 360°. Angle that pen represent = (80/600)*360° = 48° Angle that food represent = (50/600)*360° = 30°</span>
3 0
3 years ago
2+2*3+2*2+4=what is the correct answer?<br> a 12<br> b14<br> c16<br> d32
GaryK [48]

Answer: C

Step-by-step explanation:

2×3=6, 2×2=4, so that leaves you with 2+6+4+4 which adds up to 16

5 0
3 years ago
Read 2 more answers
PLZ HELP!!! Will mark brainliest if answers are correct. I'm being timed I need answer as soon as possible. Also willl give a th
Ket [755]

Answer:

Order Data (least to greatest): 35,40,42,46,47,52

Mean: 43.66

MAD:4.66

Could not figure out Mean of Differences sorry!

Step-by-step explanation:

To find the mean you add all of the numbers and divide by the amount.

To find MAD find the sum of the data values, and divide the sum by the number of data values.

5 0
3 years ago
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