1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirill115 [55]
2 years ago
14

Solve 4^(2x) = 7^(x−1).

Mathematics
1 answer:
sweet [91]2 years ago
3 0
To solve for x in the given equation, use natural logarithms. Getting the natural logarithms of both sides, will be ln 4^(2x) = ln 7^(x-1). This is also equal to 2x ln 4 = (x-1) ln 7. Rearranging the equation, 2x/(x-1) = ln 7/ln 4. The right side is equal to 1.4037. Thus, the value of x is -2.3539. 
You might be interested in
the length of the shadow of a pole on level ground increases by 90m when the angle of elevation of the sun changes from 58 degre
Anarel [89]

Answer:

The height of the pole is 167 m

Step-by-step explanation:

The given parameters are;

Increase  in the length of the shadow = 90 m

Initial angle of elevation of the Sun = 58°

Final angle of elevation of the Sun = 36°

We have a triangle formed by the change in the length of the shadow and the rays from the two angle of elevation to the top of the pole giving an angle 22° opposite to the increase  in the length of the shadow  

We have by sin rule;

90/(sin (22°)  = (Initial ray from the top of the pole to the end of the shadow's length)/(sin(122°)

Let the initial ray from the top of the pole to the end of the shadow's length = l₁

90/(sin (22°)  = l₁/(sin(122°)

l₁ = 90/(sin (22°) ×(sin(122°) = 283.3 m

Therefore;

The height of the pole = 283.3 m × sin(36°) = 166.52 m

The height of the pole= 167 m to three significant figures.

3 0
3 years ago
Read 2 more answers
Find cot theta if csc theta = <br><br>sqrt17/4 and tan theta &gt;0.​
Lorico [155]

Answer:

tan \theta = 4

Step-by-step explanation:

We know that

cosec \theta = \frac{hypotenuse }{opposite }

Given :

cosec \theta =\frac{\sqrt{17}}{4}\\

So 4 is the opposite side of theta.

tan \theta = \frac{opposite}{adjacent}

We use the Pythagorean theorem to find for the adjacent side.

a = \sqrt{17 - 4^2} = \sqrt{17-16} = 1

Therefore, \ tan \theta = \frac{4}{1} = 4

7 0
3 years ago
PLS SOMEONE HELP ME
Anarel [89]
A and D are 85 degrees
4 0
2 years ago
Which sequence is arithmetic?
MissTica

Answer:

11, 14, 17, 20

Step-by-step explanation:

An arithmetic sequence has a common difference d between consecutive terms.

Consider 2, 6, 18, 54

6 - 2 = 4, 18 - 6 = 12, 54 - 18 = 36 ← no common difference, not arithmetic

Consider 3, 6, 12, 24

6 - 3 = 3, 12 - 6 = 6, 24 - 12 = 12 ← no common difference, not arithmetic

Consider 11, 14, 17, 20

14 - 11 = 3, 17 - 14 = 3, 20 - 17 = 3 ← common difference of 3, so arithmetic

Consider 7, 11, 13, 18

11 - 7 = 4, 13 - 11 = 2, 18 - 13 = 5 ← no common difference, not arithmetic

The arithmetic sequence is 11, 14, 17, 20

3 0
3 years ago
Julie was given a new map of New Hampshire to calculate some distances. The scale is 1 inch = 50 miles. How far is Conway from L
Aloiza [94]

Answer:

Conway is 312.50 miles from Littleton

Step-by-step explanation:

Given

Scale: 1\ in = 50\ mi

See attachment

Required

Distance between Conway and Littleton

The scale distance between Conway and Littleton is 6.25 inches.

So, the actual distance is calculated as:

1\ in = 50\ mi

Multiply both sides by 6.25

6.25 * 1\ in = 50\ mi * 6.25

6.25\ in = 312.50\ mi

<em>Hence, Conway is 312.50 miles from Littleton</em>

7 0
2 years ago
Other questions:
  • Consider the two functions. F(x)=x^2-8x+7
    15·1 answer
  • How turn y more 4 is -36 into math symbols
    9·1 answer
  • Which of the follwing is not a pythagorean triple 10,16 19<br>8,15,17<br>16,63,65<br>11,60,61​
    11·1 answer
  • If ABC=DEF and m &lt;E= 2(m-15)° find m​
    10·1 answer
  • Compare the rates of the following items.
    11·1 answer
  • These box plots show the prices for two different brands of shoes.
    13·1 answer
  • Can anyone help me with this proportion ,please?? I'm having a really hard time trying to solve it
    12·1 answer
  • How do you simplify 18x⁶/27x⁴ ​
    8·1 answer
  • Simple: get the Equation
    12·1 answer
  • Use the formula to find the total sum of the interior angles for a polygon with 15 sides.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!