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vlabodo [156]
3 years ago
8

What is the value of 18 - 23.2 ?

Mathematics
2 answers:
Contact [7]3 years ago
4 0

Answer:

-5.2

Step-by-step explanation:

Zolol [24]3 years ago
4 0

Answer:

18 - 23.2 = -5.2

Step-by-step explanation:

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Robert and Elaine ran around the high school track during gym class. robert ran 1/2 of the way around the track in 5/6 minute. L
jok3333 [9.3K]

<u>Answer</u>


Incorrect


<u>Explanation</u>

Unpack the problem:

Let the distance round the track to be X.

Speed is the ratio of distance to time.

Robert run a distance of (1/2)x

Elaine run a distance of (3/4)x


Make a plan:

Finding the speed of each.

Compare their speeds to determine who ran faster than who.


Solution:

Robert's speed =(1/2)x/(5/6)

=1/2×6/5x

= (3/5)x

= 0.6x

Elaine's speed = (3/4)x/(9/10)

= (3/4)×(10/9)x

= (5/6)x

= 0.83333x



<em>Elaine ran faster than Robert. </em>


<u>Look back and explain:</u>

0.83333x > 0.6x

Elaine's speed is higher than Robert's speed.

This shows that Elaine ran faster than Robert.

5 0
3 years ago
Find the image of (−3, 8) after a 270∘ rotation counterclockwise about the origin.
katrin [286]

Answer:

(8, 3)

Step-by-step explanation:

For a 270° rotation, the rule is that (x, y) turns into (y, -x)

In (-3, 8), -3 represents x and 8 represents y.

Our answer is then (y, -x), or (8, 3)

4 0
2 years ago
A factory produces 37,650 T shirts in a 30-day month.
yan [13]
1,255 a day at average
5 0
3 years ago
Read 2 more answers
I need help simplifying this: √289
leonid [27]
The answer is 17 hoped this helped 
6 0
3 years ago
Consider two people being randomly selected. (For simplicity, ignore leap years.)
inna [77]

Answer:

(a) = \frac{144}{133225} \\\\(b) = \frac{1}{365}

Step-by-step explanation:

Part (a) the probability that two people have a birthday on the 9th of any month.

Neglecting leap year, there are 365 days in a year.

There are 12 possible 9th in months that make a year calendar.

If two people have birthday on 9th; P(1st person) and P(2nd person).

=\frac{12}{365} X\frac{12}{365}  = \frac{144}{133225}

Part (b) the probability that two people have a birthday on the same day of the same month

P(2 people selected have birthday on the same day of same month) + P(2 people selected not having birthday on  same day of same month) = 1

P(2 people selected not having birthday on  same day of same month):

= \frac{365}{365} X \frac{364}{365} =\frac{364}{365}

P(2 people selected have birthday on the same day of same month) = 1-\frac{364}{365} \\\\= \frac{1}{365}

7 0
3 years ago
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