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ss7ja [257]
3 years ago
13

Y=9x+7,y=3x-11 i need to solve theeqayions by substition and show the work

Mathematics
1 answer:
djyliett [7]3 years ago
4 0
Times the second equation by 2 to get y=9x-33 and then subtract 
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120 beats per 45 seconds
fomenos

Answer: 120 beats per 45 seconds

Step-by-step explanation:

8 0
3 years ago
Below are a picture of parallel railroad tracks intersecting the parallel edges of a road.
asambeis [7]
X= 130 degrees since 180 is the total minus 50 from above
7 0
3 years ago
Mervin has some cartons of milk. He sold 2/5 of milk in the morning. He sold 3/4 of the remainder in the afternoon. 24 more cart
sergejj [24]

2/5 were sold in the morning. This is equal to 40% of the total.  That leaves 60% leftover.

 

3/4 were sold in the afternoon. This is equal to 75% of the 60% leftover or 45% of the total (.6x.75).

 

The difference between the two sales is 24 cartons or 5% (45%-40%). If 5% is equal to 24 then you can cross multiply to see what is the equivalent number of cartons out of 100%.

 

5/100 = 24/x

5x = 24(100)

5x = 2400

x = 480

 

ANSWER: 480 cartons

6 0
3 years ago
A bank charges a service fee of 70.50 per month for a checking acount
timurjin [86]

The months till the account stability is terrible is 1.3 months.

<h3>What is account stability?</h3>
  • In banking, the account stability is the amount of coins you have were given available on your checking or economic financial savings account.
  • Your account stability is the net amount available to you anyways deposits and credit score had been balanced with any costs or debits.
  • Your economic organization account balance suggests you methods a brilliant deal coins you have were given on your account.
  • That coins is there for you withdraw or depart in place, likely with a view to collect interest payments on it.
  • The answer isn't always truely yes, though, because of the truth your balance might not be exactly what it seems.
  • The available balance can be taken out of the account in cash at an ATM or with a economic organization teller.
  • The debit card transfers coins from the coins inside facet the checking account.

To learn more about account stability from the given link:

brainly.com/question/13387881

#SPJ13

4 0
11 months ago
ID: A
snow_tiger [21]

Answer:

13.63 miles per hour

Step-by-step explanation:

100 yards / 15 sec  converted to miles per hour

<u>100 yards</u> x <u> 60 sec</u>   x  <u> 60 min</u>   x  <u> 1 mile     </u>    =  13.63 miles/hr

   15 sec        1 min          1 hr           1760 yards

the mistake on Mrs Dukes is the conversion from miles to yards.

1 mile = 1760 yards NOT 5280 yards

7 0
2 years ago
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