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zzz [600]
3 years ago
15

Find the sum: (2x^2 + x + 3) + (3x^2 + 2x + 1)

Mathematics
1 answer:
Montano1993 [528]3 years ago
6 0

Answer:

5x^2 +  3x   +4

Step-by-step explanation:

(2x^2 + x + 3) + (3x^2 + 2x + 1)

Combine like terms

(2x^2 + 3x^2 + 2x+ x + 3 + 1)

5x^2 +  3x   +4

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Dan sold 40 concert tickets in 5 days.
olchik [2.2K]

Step-by-step explanation:

The number of tickets sold by Dan the first day is x.

Tickets sold on the 2nd day: x+3

on the 3rd day: x+6

on the 4th day: x+9

on the 5th: x+12

Since the total of tickets sold by Dan is 40:

x+(x+3)+(x+6)+(x+9)+(x+12)=40

5x+30=40

5x=10

x=2

number of tickets sold on the third day: 8

7 0
2 years ago
Directions: Complete each proof using the properties of equality. Not all rows be used.
kicyunya [14]

The answers for 13 and 14 are attached in the file.

7 0
3 years ago
A 5-pack of raffle tickets costs $15.55. What is the unit price?
DochEvi [55]

Answer: if you divide 15.55 by 5 the unit price is $3.11

8 0
3 years ago
The diameter of a circle is 5 ft. Find the circumference to the nearest tenth(urgent)
defon

Answer:

15.71

Step-by-step explanation:

To find the radius, half the diameter because r x 2 = diameter. 5/2 = 2.5

Put in circumference formula C=2πr

c=2 x 3.14 x 2.5

c= 2 x 7.85

c=15.7

Put the value into the circle circumference formula C=2πr

5 0
3 years ago
Use the table below to answer this question:
Tanzania [10]

Answer:

2

Step-by-step explanation:

We can find the average rate of change by using the formula

rate of change = (y2-y1) /(x2-x1)

                         = (5-3)/(1-0)

                         = 2/1

                            =2

8 0
3 years ago
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