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coldgirl [10]
3 years ago
11

Which algebraic expression represents the word expression "three times the square of a number, n, subtracted from 54"?

Mathematics
1 answer:
sveta [45]3 years ago
3 0

Answer:

54 - 3n²

Step-by-step explanation:

Square of a number n = n²

Three times the square of n = 3*n² = 3n²

Expression:

54 - 3n²

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3^(7−2x) = (1/27)^(−8)<br> Solve the exponential equation for x
Tomtit [17]

Answer:

Step-by-step explanation:

Your first job is to make the bases the same. Once you have done that, you can equate the powers.

(1/27) ^ (1 /- 3) = 3

(1/27)^(1/-3)(24)

3^24 = 3^(7 - 2x)

24 = 7 - 2x                   Subtract 7 from both sides

17 = -2x                        Divide by -2

-8.5 = x

8 0
3 years ago
Find the missing lengths. Leave your answers as radicals in simplest form.
Aleksandr-060686 [28]

Answer:  

y = 5√2/2

x = 5

Step-by-step explanation:

First find y using the tan method: opposite/adjacent

tan(45) = 5√2/2 ÷ y

y = 5√2/2 ÷ tan(45)

y = 5√2/2

Then find x using the pythagoris theorem: c^2 = a^2 + b^2  

x = √ (5√2/2)^2 + (5√2/2)^2

x = 5

4 0
3 years ago
How u do dis ............
Norma-Jean [14]

i’ll try to help.

angle 3 and angle 1 are congruent angles, so they both equal 75°.

angle 1 and angle 5 are corresponding angles, so they both equal 75°. (it’s bc they’re positioned the same.

soooo the answer to that is 75° for angle 5. (not really great at explaining) also hope that the answer is right it should be.

5 0
4 years ago
write an algebraic expression for each verbal expression... 1. the sum of a number and ten 2. 15 less than k 3.the product of 18
erica [24]

Answer:

Step-by-step explanation:

N+10

K-15

18*2

6+(2*m)

3*n+8

(5*n)-17

2+(y^2)

(G^4)-9

7 0
3 years ago
Simplify 4x+5/6x^2-x-12 - 5x/6x^2-x12
Marizza181 [45]
<span> i think its -x+5/6x^2-x-12  but i might be wrong.....</span>
6 0
3 years ago
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