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kompoz [17]
3 years ago
11

ANSWER ASAP TEST IN ONLY 45 MINUTES

Mathematics
2 answers:
melomori [17]3 years ago
7 0

Answer:

-2x-15

Step-by-step explanation:

ratelena [41]3 years ago
6 0

Answer: C. -2x-15

Step-by-step explanation: 5 + 5(x – 4) – 7x

5(x-4)-7x+5

(5x-5×4)-7x+5

5x-20-7x+5

5x-7x-20+5

-2x-15

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Here are the first four terms of a sequence.
Nataly_w [17]

Answer:

  • aₙ = 2n² + n + 1

Step-by-step explanation:

We observe that the difference of terms is 4, 7 and 15 and next level difference is 4. It means the sequence is quadratic.

<u>We can compare this with simple quadratic sequence </u>

  • 1, 4, 9, 16

<u>and find out that doubling each term gives us </u>

  • 2, 8, 18, 32

This is close to our sequence, write the terms as follows to find exact rule

<u>The first term: </u>

  • a₁ = 4  = 2*1² + 2 = 2*1² + 1 + 1

<u>The second term</u>

  • a₂ = 11  = 2*2² + 3 = 2*2² + 2 + 1

<u>The third term:</u>

  • a₃ = 22 = 2*3² + 4 = 2*3² + 3 + 1

<u>The fourth term:</u>

  • a₄ = 37 = 2*4² + 5 = 2*4² + 4 + 1

<u>The nth term as per observation above is:</u>

  • aₙ = 2n² + n + 1
8 0
3 years ago
On a hike, Parker noticed that the temperature at the base of a mountain was 69°F. At a point on the mountain that was 2,000 fee
Darina [25.2K]

Answer:

-0.003 %Fahrenheit

Step-by-step explanation:

5 0
3 years ago
It costs $50 to join a bowling club plus a monthly fee, the total costs for the year is $350
kvasek [131]
$25 a month :)  (its too short so i hope you have a lovely day)
5 0
3 years ago
All of the middle school mathletes solve math problems at the same pace. Working together, six mathletes complete all of the sum
guapka [62]

Answer:

5 1/2 hours

Step-by-step explanation:

by a factor of 5 means times 4

6*4=24

22/4=5.5 hours

8 0
3 years ago
Find the sum of 2.5+3.03
Alenkasestr [34]

Answer: 5.53


Step-by-step explanation:

this is a straight forward addition

2.5+3.03 =5.53

to be clear or to specify, use the decimal point to make the sum:

2.5 = 2 + 0.5       and 3.03 = 3 + 0.03

2+3= 5      and  0.5 + 0.03 = 0.53

5 + 0.53 = 5.53 (but this is to long just to make it clear)


5 0
3 years ago
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