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lapo4ka [179]
1 year ago
14

using the substitution y = 3^x, show that the equation 9^x - 3^(x+1) + 2 can be written as (Y-1)(Y-2) = 0

Mathematics
1 answer:
hjlf1 year ago
8 0

Answer:

x=3, y=1

x=3, y=2

Hope this helps!

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22 students is__% of 55<br> Pls show me in steps
kramer

Answer:

40%

Step-by-step explanation:

divide the students by the total

22/55 = P

P = 0.4 = 40%

8 0
3 years ago
(5x)/7 - x/14 = 9/7 solve for the unknown value this is a linear equation​
Ahat [919]

Step-by-step explanation:

\longmapsto \rm \dfrac{5x}{7} - \dfrac{x}{14} = \dfrac{9}{7} \\

\longmapsto \rm  \dfrac{10x + x}{14} = \dfrac{9}{7} \\

\longmapsto \rm  \dfrac{11x}{14} = \dfrac{9}{7} \\

→ 11x(7) = 14(9)

→ 77x = 126

→ x = 126 ÷ 77

→ x = 1.63

7 0
3 years ago
( will give brainlyest)
Arada [10]

Answer: 384 feet

Step-by-step explanation:

     We will simplify and solve -16t² + 160t when t is equal to 4.

-16t² + 160t

-16(4)² + 160(4)

384 feet

8 0
1 year ago
Read 2 more answers
1. Complete this statment: A polygon with all sides the same length is said to be____
Katen [24]

Answer:

Q1. Regular (A)

Q2. 105° (C)

Q3. x=45°

Step-by-step explanation:

Q1. A regular polygon is a polygon with all sides and angles equal.

Q2. The sum of the measure of exterior angles of a polygon is always 360°. Therefore,  360°-255°=105°

Q3. 148°+112°+(2x+10)°+(2x)°+90°= Sum of angles in a pentagon.

<u><em>Note</em></u>: The square at the fifth angle shows that its a right angle which is 90°. Also all the angles are equal to the sum of angles in a pentagon 'cause the polygon has 5 sides ( a pentagon).

Sum of interior angles of a polygon is: (n-2)180°. Where "n" is the number of sides of the polygon.

Therefore the sum of interior angles is (5-2)180°=540°

solving the equation you have;

360°+4x=540°

4x=540°-360°

4x=180°

x=180°/4

x=45°

therefore x=45°

8 0
3 years ago
Find an exact value. cosine of nineteen pi divided by twelve.
zaharov [31]
The answer is -0.083333333333333
4 0
3 years ago
Read 2 more answers
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