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3 years ago

PLEASE HELP ME SIMPLIFY THIS PLEASE SHOW WORK TO! THANK YOU! 5.3x - 9 + 7.6x

Mathematics

1 answer:

irinina [24]3 years ago

6 0

Answer:

12.9x-9

Step-by-step explanation:

5.3x-9+7.6x

5.3x+7.6x = 12.9x

=12.9x-9

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Ellen said she spent half her money for lunch and half of what was left for a movie. She now has $1.20. How much did she spend f

goldenfox [79]

Answer: She spend $1.20 for lunch.

Step-by-step explanation:

Let the total amount be 'x'.

Half of her money spend for lunch be $\dfrac{x}{2}$

Half of her money left for a movie be $\dfrac{x}{2}$

Amount she has now = $1.20

So, According to question, it becomes ,

$\dfrac{x}{2}=1.20\\\\x=1.20\times 2\\\\x=\$2.40$

Hence, Amount she spend for lunch is $\dfrac{x}{2}=\dfrac{2.40}{2}=\$1.20$

Therefore, she spend $1.20 for lunch.

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3 years ago

Juan made $200 after working 10 hours. Jill made $300 in 15 hours. Who makes more money per hour?

kirill115 [55]

Answer:

A. They make the same amount

Step-by-step explanation:

You can use the cross multiplication method to find the answer:

$ hrs

200 × 10

300 15

200 × 15 = 3000

300 × 10 = 3000

8 0

3 years ago

PLEASE HELP STRAIGHTAWAY:

LUCKY_DIMON [66]

Answer:

2 times

Step-by-step explanation:

6 0

4 years ago

9/10 written as a sum of unit fractions like the Egyptians used to use.

Alexeev081 [22]

1/2+1/3+1/15 is how it would be written as

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3 years ago

While she was on holiday,Olga measured the temperature at the same time every day. Here are the results. Work out the median: Th

alukav5142 [94]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the required data are not given.

I will use the following data as an illustration of how to calculate median and range.

We have:

$x: 11, 13, 14, 15, 18, 20$

Calculate range

Identify the highest and the least

$Highest = 20$

$Least = 11$

So, the range is:

$Range = Highest -Least$

$Range =20-11$

$Range =9$

Calculate the median

The number of data we are using is 6 (i.e. even).

So, the position of the median item is:

$Median =\frac{1}{2}(n+1)$

$Median =\frac{1}{2}(6+1)$

$Median =\frac{1}{2}*7$

$Median =3.5th$

A decimal result implies that the median is the mean of the integer values before and after the result.

In this case, the median is the mean of the item at 3rd and 4th positions.

So:

$Median = \frac{14+15}{2}$

$Median = \frac{29}{2}$

$Median = 14.5$

3 0

3 years ago