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UNO [17]
4 years ago
9

Each week Sal runs 1.5 miles more than the week before. this week he ran 12 miles. how many weeks ago did he run 4.5 miles?​

Mathematics
1 answer:
Vedmedyk [2.9K]4 years ago
8 0
1.5, 3, 4.5, 6, 7.5, 9, 10.5, 12, he ran 4.5 miles 5 weeks ago
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20 is what percent of 52? Round your answer to the nearest 10th
Bogdan [553]
2/5
Your welcome.......
4 0
3 years ago
What is the answer to simplify 6000-1600
USPshnik [31]

Simplified to its simplest form would be 15/4. The GCD of them all would 400, so you divided them by 400.


8 0
4 years ago
On six books shelves there are 72 books per shelf.How many books are there altogether? If 1/3 of these are non-fiction how many
8090 [49]
<h2>Answer:</h2><h3>Part 1:</h3>

Given:

Total shelves: 6

Books per shelve: 72

Total books = ?

Solution:

Total books: 6 * 72 = 432

                                                           Total books = 432

<h3>Part 2:</h3>

Given:

Fiction books = 1/3 of total books

Solution:

Nonfiction books = Total books - 1/3 of total books

                              =   432 - 1/3 * 432

                               = 432 - 166 = 266

                                           Non- fiction books = 266

6 0
3 years ago
Precalculus PLEASE HELP ME right answers only check all please
Alex_Xolod [135]

Given :

cos(x)cos(\frac{\pi }{7}) + sin(x)sin(\frac{\pi }{7})=-\frac{\sqrt{2}}{2}

We know the identity

cos(x)cos(y) + sin(x)sin(y)=cos(x-y)

We use this property to simplify the left hand side

So  cos(x)cos(\frac{\pi }{7}) + sin(x)sin(\frac{\pi }{7})=cos(x - \frac{\pi }{7})

cos(x - \frac{\pi }{7}) =-\frac{\sqrt{2}}{2})

we know ,

when cos(x) =-\frac{\sqrt{2}}{2}) then

x = \frac{3\pi }{4} , \frac{5\pi }{4}

For  cos(x - \frac{\pi }{7}) =-\frac{\sqrt{2}}{2})

x - \frac{\pi }{7}= \frac{3\pi }{4} and x - \frac{\pi }{7}= \frac{5\pi }{4}

Add \frac{\pi }{7} on both sides

x= \frac{3\pi }{4} + \frac{\pi }{7} and x= \frac{5\pi }{4} +\frac{\pi }{7}

Finally we add 2npi for general solution

So options C  and D  are correct


6 0
3 years ago
Susan and Jamie ordered two small pizzas for lunch. Susan ate
11111nata11111 [884]

Answer:

Susan ate less pizza than Jamie.

Step-by-step explanation:

4/6 = 2/3

6/8 = 3/4

2/3 = 8/12

3/4 = 9/12

8/12 < 9/12

2/3 < 3/4

4/6 < 6/8

6 0
3 years ago
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