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elena-s [515]
3 years ago
15

Please help. Explain please.

Mathematics
2 answers:
Mazyrski [523]3 years ago
5 0
That is asking for the sum of the equation 2n+1

up to 5

2(1) + 1 = 3
2(2) +1 = 5
2(3) +1 = 7
2(4)+1 = 9
2(5)+1 = 11

3+5+7+9+11 = 35

answer is 35
Sunny_sXe [5.5K]3 years ago
4 0
When n = 1, 2(1) + 1 = 3

When n = 2, 2(2) + 1 = 5

When n = 3, 2(3) + 1 = 7

When n = 4, 2(4) + 1 = 9

When n = 5, 2(5) + 1 = 11

Sum = 3 + 5 + 7 + 9 + 11 = 35

----------------------------------------------------
Answer: 35
----------------------------------------------------
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Solve for X <br><br>Explain if possible :)
sweet-ann [11.9K]

The two labeled angles are alternate interior angles, and as such, they are the same.

From this result you can build the equation

15x-2 = 13x+2

and solve it for x: subtract 13x from both sides to get

2x-2=2

and add 2 to both sides to get

2x = 4 \implies x = 2

Check: if we plug the value we found we have

13\cdot 2 + 2 = 26+2 = 28 = 15\cdot 2 - 2 = 30-2

So the angles are actually the same, as requested.

4 0
3 years ago
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Scrat [10]
The answer would be 14/15

Find a common denominator that both of the fractions can use. An easy way to do this is simply multiply the denominators together. So for 3/5 you would multiply by 3 to get the fraction 9/15 and then multiply 1/3 by 5 to get 5/15. Add both 9/15 and 5/15 to then get 14/15.
4 0
3 years ago
Read 2 more answers
In their last game, the school football team scored an equal number of points in each of the first three quarters, then 14points
Ksenya-84 [330]

Answer:

10 points

Step-by-step explanation:

Points scored in each of the first 3 quarter = x

Total points scored in the first 3 quarter = x + x + x

= 3x

Points scored in the fourth quarter = 14

Total points scored = 44 point

Total points scored = Total points scored in the first 3 quarter + Points scored in the fourth quarter

44 = 3x + 14

Subtract 14 from both sides

44 = 3x + 14

44 - 14 = 3x + 14 - 14

30 = 3x

Divide both sides by 3

x = 30/3

= 10

x = 10 points

Points scored in each of the first 3 quarter = x = 10 points

The school football team scored 10 points points in the first quarter

7 0
3 years ago
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vivado [14]

Answer:

\boxed{\sf Parallelogram}

Step-by-step explanation:

A parallelogram has opposite parallel sides and it is a quadrilateral.

7 0
3 years ago
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4(2-4x)-3x=65 Whats the answer and how did you solve it?
IRINA_888 [86]

Answer:

x= -3

Step-by-step explanation:

Distribute 4(2-4x) which leaves you with 8-16x-3x=65

combine the like terms which leaves you with 8-19x=65

subtract 8 from both sides 8-19x-8=65-8 which leaves you with -19x=57

lastly divide -19 from both sides which leaves you with x= -3

3 0
3 years ago
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