All categories

3 years ago

Please help me on this problem and explain it step by step on how I could get the answer in order to get marked as brainliest!

Mathematics

2 answers:

Alla [95]3 years ago

6 0

Answer:

589.6 feet per minute

Step-by-step explanation:

half an hour is 30 minutes, you would then divide 450/30=15 which that total will be your speed or mph, then you multiply 88*15=589.6

adoni [48]3 years ago

5 0

Answer:

to find the speed per min all i did was divide 450 feet by 60 mins b/c that's how many mins are in an hour and that give me 7.5 so that would be 7.5 feet per min

Step-by-step explanation:

You might be interested in

Pleasee help me it’s almost dueee !!!

DENIUS [597]

Answer:

0,3,1

Step-by-step explanation:

3 0

3 years ago

How do I work out this

Ivenika [448]

Answer & Step-by-step explanation:

1.5 litres = 1500ml

Small Milk Carton

300ml x 5 = 1500ml

£1.20 x 5 = £6

Large Milk Carton

500ml x 3 = 1500ml

£1.40 x 3 = £4.20

The best value for 1.5l (1500ml) is to purchase 3 large milk cartons, as it's cheaper (by £1.80) than buying a small milk cartons.

7 0

2 years ago

A skydiver falls 288.52 feet in four seconds. The skydiver fall feet per second.

Veronika [31]

Answer:

72.13

Step-by-step explanation:

72.13

4|288.52

5 0

3 years ago

Whats the factors of 13

ivann1987 [24]

13 can only be divided evenly by 1 and 13. its a prime number

6 0

3 years ago

Last question was inncorrectly typed:1.A sample of students who has taken a calculus test has a mean =78.2, mode =67, median 67.

vampirchik [111]

Answer:

(A) The data set of the sample of students who has taken a calculus test is right skewed.

(B) The average of female students in the class is 66.

Step-by-step explanation:

(A)

For a left skewed distribution the Mean < Median < Mode.

For a right skewed distribution the Mean > Median > Mode.

For a symmetric distribution the Mean = Median = Mode.

Given: Mean = 78.2, Median = 67 and Mode = 67

In this case the mean of the data is more than the median and mode.

$Mean = 78.2>Median = Mode = 67$

Thus, the data set of the sample of students who has taken a calculus test is right skewed.

(B)

Total number of student ( $n$ ) = 35

Combined average ( $\mu_{c}$ ) = 70

Number of male student ( $n_{M}$ ) = 20

Average of male students ( $\mu_{M}$ ) = 73

Number of female student ( $n_{F}$ ) = 15

Average of female students = $\mu_{F}$

The formula to compute the combined average is:

$\mu_{c}=\frac{n_{M}\mu_{M}+n_{F}\mu_{F}}{n_{M}+n_{F}}$

Compute the value of $\mu_{F}$ as follows:

$\mu_{c}=\frac{n_{M}\mu_{M}+n_{F}\mu_{F}}{n_{M}+n_{F}}\\70=\frac{(20\times73)+(15\times\mu_{F})}{20+15}\\ 70\times35=1460+(15\times\mu_{F})\\\mu_{F}=\frac{2450-1460}{15} \\=66$

Thus, the average of female students in the class is 66.

8 0

4 years ago