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jolli1 [7]
3 years ago
12

Karen traveled 480 miles in 6 hours. She then increased her speed by 20 miles. How long did it take her to travel the next 560 m

iles?
Mathematics
1 answer:
ivanzaharov [21]3 years ago
3 0

Answer:

Step-by-step explanation:

480 divided by 6 is 80, so she was initially traveling at 80 mph.

She then increased her speed by 20 mph, therefore making it 100 mph. (Someone arrest her already.)

560 divided by 100 is 5.6 hours.

0.1 of an hour is 6 minutes.

0.6 of an hour is therefore 36 minutes.

Your answer is 5 hours and 36 minutes.

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Need to find the sum of 50
Bumek [7]

Answer:

4600

Step-by-step explanation:

This is an arithmetic sequence with common difference d between consecutive terms.

d = - 2 - (- 6) = 2 - (- 2) = 6 - 2 = 4

The sum to n terms of an arithmetic sequence is

S_{n} = \frac{n}{2}[ 2a + (n - 1)d ]

where a is the first term

here a = - 6, d= 4 and n = 50, hence

S_{50} = \frac{50}{2} [ (2 × - 6) + (49 × 4) ]

                           = 25 ( - 12 + 196 )

                           = 25 × 184

                           = 4600

6 0
4 years ago
Given [12 -13 17 -22] [x y] = [7 -51] what is |Ay|?<br> Please help
grin007 [14]

Answer:

Step-by-step explanation:

It's not c or d. It's not much but I hope it helps.

5 0
3 years ago
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george completed 3/5th of work in 9 days with the help of paul he completes remaining work in 4 days.In how many days paul alone
IRINA_888 [86]
If George completed 3/5 of work in 9 days, it means that he needs 3 days to finish 1/5th of the work.

The remaining part is 2/5 because 1-3/5=2/5. 2/5 is also 6/15

From this, how much did George do? in the first 3 days he did 1/5th and then one more day was left, during which he did 1/5/3=1/15th.

So he did in total 1/15+1/5=1/15+3/15=4/15.
this means that Paul did the rest of 6/15, so Paul did 6/15-4/15=2/15.

So we know that he does 2/15 in 4 days, which means that every two days he can do 1/15 of the work

so he would need 15 times 2 days to finish the work - 30 days!
6 0
3 years ago
Please help!!!<br> i don’t understand this
Inessa05 [86]

Answer:

B. is your answer.

Step-by-step explanation:

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3 years ago
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Marina86 [1]

Answer:  3t²(2st⁷ - s⁶ - 2t⁵)

<u>Step-by-step explanation:</u>

5s⁶t² + 6st⁹ - 8s⁶t² - 6t⁷     <em>5s⁶t² and - 8s⁶t² are like terms which = -3s⁶t² when combined</em>

=          6st⁹ - 3s⁶t² - 6t⁷      <em>next, factor out the GCF of 3t²</em>

=      3t²(2st⁷ - s⁶ - 2t⁵)

5 0
4 years ago
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