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Brilliant_brown [7]
3 years ago
7

Can anyone help me?!!

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
6 0
Sorry no i cant have a great day tho
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X2 + 4x -9 = (x + a)? +b<br> Find the value of a and the value of b.<br> a =<br> b=<br> ?
Burka [1]

Step-by-step explanation:

x² + 4x - 9

= (x + 2)² - 13

a = 2, b = -13.

4 0
3 years ago
Adrian earns $3600 per month. he spends 1/4 of his income on rent, 2/5 on food, 1/9 on activities, and he saves the rest. how mu
murzikaleks [220]

he saves $860 per month

calculate each of his outgoings

rent = \frac{1}{4} × $3600 = \frac{3600}{4} = $900

food = \frac{2}{5} × $3600 = \frac{2(3600)}{5} = $1440

activities = \frac{1}{9} × $3600 = \frac{3600}{9} = $400

savings = $3600 - ( 900 + 1440 + 400 ) = $860


4 0
2 years ago
Read 2 more answers
Rocco has a weekly reading schedule, reading for 4.5 hours per day on some days and 3.5 hours per day on the other days. He read
AleksAgata [21]

Answer:

x = days he reads for 4.5 hours = 1 day

y = days he reads for 3.5 hours = 6 days

Step-by-step explanation:

Let

x = days he reads for 4.5 hours

y = days he reads for 3.5 hours

x + y = 7 (1)

4.5x + 3.5y = 25.5 (2)

From (1)

x = 7 - y

Substitute x = 7 - y into (2)

4.5x + 3.5y = 25.5 (2)

4.5(7 - y) + 3.5y = 25.5

31.5 - 4.5y + 3.5y = 25.5

- 4.5y + 3.5y = 25.5 - 31.5

-y = -6

y = 6

Substitute y = 6 into (1)

x + y = 7 (1)

x + 6 = 7

x = 7 - 6

x = 1

x = days he reads for 4.5 hours = 1 day

y = days he reads for 3.5 hours = 6 days

4 0
3 years ago
Susan is buying supplies for a party. If spoons only come in bags of 8 and forks only come in bags of 6, what is the least numbe
igor_vitrenko [27]
You can buy 6 bags of forks and 8 bags of spoons. All you simply have to do is find the common multiple of the two. You can just multiply them both if you can’t find any others or it’s easier
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3 years ago
Hipfecndonoeciewqoecneqcoqexoqw;?
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Answer:

jaksmjshebajkan slzns makjzblzisbbsljzbsnkdkx

6 0
3 years ago
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