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vladimir2022 [97]
2 years ago
15

I need help with these two, can someone pls help meI need this ASAPno links pls ​

Mathematics
1 answer:
Anestetic [448]2 years ago
3 0
5x+4+8x-3=79
13x=79-1
x=6
DBC=34
ABC=45

6x+20+2x+4 = 180
8x = 156
x=19.5
TQS=137
RQS=43
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If the 7th of an AP is equal to 11 times the 11th term, find the 18th term
Zina [86]

Answer:

-33 or 33

Step-by-step explanation:

The seventh term of an AP is written as:

a + 6d

The eleventh term of an AP is written as:

a + 10d

If the 7th term is 11 times the 11th term, then;

a + 6d = 11(a + 10d)

Expand to get:

a + 6d = 11a + 110d

11a - a = 6d - 110d

10a =  - 104d

\frac{a}{d}  = -   \frac{104}{10}

\frac{a}{d}  = -   \frac{52}{5}

We must have a=-52 and d=5

Or

a=52 and d=-5

For the first case, the 18th term is :

- 52 + 5 \times 17 = 33

For the second case,

52 - 5 \times17 =  - 33

3 0
3 years ago
Need help with these two questions
WITCHER [35]

Answer:


Step-by-step explanation:

Answer:(A)= (-x^11)/(y^7)

(B)= (1/12xy^5)


Step-by-step explanation:

(A) (3x^3y^-2)(-2x^-3y^2)^-5/(6x^7y^-5)

[(3x^3y^-2)(-2x^15y^-10)]/(6x^7y^-5)

(6x^18y^5)/(-6x^7y^12)

(-6x^11)/(6y^7)

(-x^11)/(y^7)

(B) [(12x^-3y^5)/(x^-4)]^-1

(1/12xy^5)

7 0
3 years ago
rajendra has 14 4/5 pounds of trail mix he is putting them into bags out 1 1/2 pounds each does he have enough trail mix complet
sukhopar [10]
Rajendra has enough trail mix to fill 8 bags with approximately 2 extra

14 4/5 = 14.8
1 1/2 = 1.5

14.8 / 1.5 ~ 10
7 0
3 years ago
Read 2 more answers
Solve p-|5|x|-3|=-20
Nookie1986 [14]

Answer:

Step-by-step explanation:

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3 0
2 years ago
5 crackers cost 30p what will 15 cost
SOVA2 [1]
90p. 15 / 5 is 3 so you need to times the 30p by 3. 30 x 3= 90.
3 0
3 years ago
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