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aleksandrvk [35]
3 years ago
15

18 POINTS I need it ASAP !

Mathematics
2 answers:
Lena [83]3 years ago
7 0

Answer:

343

Step-by-step explanation:

\frac{7^{12} * 7^{9}}{(7^{6})^{3}  } is the equation.

1. You can add the two exponents in the numerator --> 7^{21}

2. You can multiply the exponents in the denominator --> 7^{18}

(the equation is now \frac{7^{21} }{7^{18} })

3. Subtract the exponents to get 7^{3}

7^{3} = 343

Nat2105 [25]3 years ago
3 0

Answer:

7 to the power of 3

7 3

Step-by-step explanation:

7 21/ (7 6) 3

7 21/ 7 18

Cross it out and answer is 7 3

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The sum of the first 21 terms of the progression, - 18, - 15,-12.....is?​
katovenus [111]
You can just use the tn formula to solve this tn= t1 + (n-1)d
8 0
3 years ago
In the regular decagon shown, what is the measure of angle 1?
NeX [460]

Answer:

try 36 but im not quite sure

Step-by-step explanation:

im sry if im wrong have a good rest of your day :)

6 0
3 years ago
1
strojnjashka [21]

Answer:

Step-by-step explanation:

3x - 4y = 13 (1)

2x + y = 5 (2)

——————

3x - 4y = 13

4(2x + y = 5) (2) times 4

——————-

3x - 4y = 13

8x + 4y = 20

——————-

11x = 33

x = 33/11

x = 3

Plug x = 3 in (2):

2(3) + y = 5

6 + y = 5

y = 5-6

y = -1

Thus, x = 3 and y = -1

4 0
3 years ago
Which of the following is a quadratic equation that has the roots x = 2 and x = −7? (4 points)
crimeas [40]

Answer:

x^2 + 5x - 14

Step-by-step explanation:

We can assume that if there is 2 options for x, this is a quadratic equation that equals 0.

Therefore, we can put this into brackets as one bracket must equal 0.

(x - 2) (x + 7)

After this we expand, which is a process easier to search up

The answer is:

x^2 + 7x - 2x - 14

We can simplify this to:

x^2 + 5x - 14

x^2 represents x squared in case you were wondering

Therefore, the answer is:

x^2 + 5x - 14

8 0
2 years ago
The product of two exponentail expressionss is x5 y2 z. One of the expressions is x2 y. What is the other expression?
Yakvenalex [24]
I hope this helps you



x^5.y^2.z/x^2.y


x^5-2.y^2-1.z


x^3.y.z
8 0
3 years ago
Read 2 more answers
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