Solve the equation. Round to the nearest hundredth. Show work.

[tex]4^{-5x-7} = 6^{2x-1}[/tex]

Answers

Answer 1

Answer:

[tex]x=-0.75[/tex]

Step-by-step explanation:

The given equation is

[tex]4^{-5x-7}=6^{2x-1}[/tex]

We take logarithm of both sides to base 10.

[tex]\log(4^{-5x-7})=\log(6^{2x-1})[/tex]

[tex](-5x-7)\log(4)=(2x-1)\log(6)[/tex]

We expand the brackets to get;

[tex]-5x\log(4)-7\log(4)=2x\log(6)-\log(6)[/tex]

Group similar terms;

[tex]-7\log(4)+\log(6)=2x\log(6)+5x\log(4)[/tex]

[tex]-7\log(4)+\log(6)=(2\log(6)+5\log(4))x[/tex]

[tex]\frac{-7\log(4)+\log(6)}{(2\log(6)+5\log(4))}=x[/tex]

[tex]x=-0.752478[/tex]

To the nearest hundredth.

[tex]x=-0.75[/tex]


Related Questions

Which of the following shows the correct order of the numbers below?

First who answers will get brainlyest

Answers

Answer:

c)

Step-by-step explanation:

if you look at option c it would be correct because 0.75 (3/4) is bigger than 0.7. Then 11/12 is a bigger proportion then 0.75. there for your answer is correct.

Final answer:

The correct order of the numbers given when converted to decimals for easy comparison is 0.7, 3/4 and 11/12, which corresponds to option b: 0.7 < 3/4 < 11/12.

Explanation:

This is a question about comparing and ordering fractions and decimals. To answer this, we first need to convert all the numbers into the same format. We can convert the fractions 11/12 and 3/4 into decimals for easier comparison.

First, to convert 11/12 to a decimal, you'll do the division to find approximately 0.9167. Secondly, 3/4 can be converted to a decimal by performing 3 divided by 4, which equals 0.75. Now, we can easily compare these decimals to 0.7.

From this, we can see that 0.7 is less than 0.75 (3/4) and both 0.7 and 0.75 are less than 0.9167 (11/12). So the correct order of the numbers from least to greatest would be 0.7 < 3/4 < 11/12.

So the correct option is b. 0.7 < 3/4 < 11/12.

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Which expression is equivalent to sqr 400i8j4k6

Answers

I have attached the correct answer. Brainliest will be much appreciated!

HELP CHECK MY ANSWERS, TY!
The graph shows the vertical position of a ball attached to a spring oscillating between a low point and a high point as a function of time.



Select all statements that describe the graph.

Answers

Answer:

That is correct

Step-by-step explanation:

When doing the math you can find that b and d are correct

Answer:

Step-by-step explanation:

Here all the statement describing the graph.

1- the cycle of the graph is 2 second.

2- mid-line of the graph is at y=0

3- amplitude is 24 i.e 12 unit + 12 unit

4- ball is traveling 24 cm in 1 sec. I.e. 12 unit in 0.5 sec and another 12 units in 0.5 sec.

Conrad paid $52.26 for a pair of shoes. Michelle paid $3.89 more for a pair of shoes than Conrad paid for his. How much did Michelle pay for her shoes

Answers

Answer:Michelle paid $56.15 for her shoes

Step-by-step explanation:

Since Michelle paid $3.89 more for her shoes compared to Conrad, who paid $52.26. This means you have to add $3.89 to $52.26.

$3.89+$52.25= $56.15

Final answer:

Michelle paid $56.15 for her shoes, which is $3.89 more than the $52.26 that Conrad paid for his.

Explanation:

The question involves a simple arithmetic calculation to determine how much Michelle paid for her shoes. To find the answer, we will add $3.89, which is the additional amount Michelle paid, to $52.26, which is the amount Conrad paid for his shoes.

Step-by-step calculation:

Conrad's shoe price: $52.26Additional amount paid by Michelle: $3.89Michelle's shoe price: $52.26 (Conrad's price) + $3.89 = $56.15

Therefore, Michelle paid $56.15 for her shoes.

Before she went on a diet, Jenna's waist measured 32.45 inches.After the diet, it measured 26.97 inches.How many inches did Jenna lose?

Answers

Answer:

5.48

Step-by-step explanation:

32.45 - 26.97 = 5.48

Answer:

Jenna lost 5,48

Step-by-step explanation:

Before the diet Jenna's waist measured 32.45 inches.

After the  diet Jenna's waist measured 26.97 inches.

To get the difference between the two measures,  we have to discount the new measure from the previous one.

So,  difference is  26.97 inches-32.45 inches= -5,48. It is negative because she lost inches.

(1CQ) Write the repeating decimal as a fraction .51

Answers

Answer: Your answer is 17/33! Hope this helps. If you need anymore help let me know!

For this case we must indicate the representation in the form of a fraction of the following decimal number:

0.51 periodic number

Option A:

[tex]\frac {17} {100} = 0.17[/tex]

Option B:

[tex]\frac {51} {100} = 0.51[/tex]

Option C:

[tex]\frac {17} {33} = 0.51515151[/tex]

Option D:

[tex]\frac {51} {33} = 1.5454[/tex]

So, the correct option is C

Answer:

Option C

Which equation can be used to find the volume of the right rectangular prisms

A) V = (10)(5)

B) V = (10)(2)

C) V = (10)(5)(2)

D) V = 10(5 + 2)2

Answers

The answer is C because it’s length x width x height

Answer:

C) V = (10)(5)(2)

Step-by-step explanation:

V = (10)(5)(2) To find the volume of a right rectangular prisms, multiply the length times the width times the height. -- V = lwh.

Simplifying the expression results in what binomial expression?

Answers

Answer:

The answer is 2x−5

Step-by-step explanation:

see the image

HELP PLEASE!
Find the exact values of cos and sin for the angle measure. 180 degrees

Answers

Answer:

[tex]\large\boxed{\sin180^o=0\ and\ \cos180^o=-1}[/tex]

Step-by-step explanation:

[tex]\text{Use}\\sin(2\theta)=2\sin\theta\cos\theta\\\\\cos(2\theta)=\cos^2\theta-\sin^2\theta\\\\180^o=2(90^o)\\\\\sin90^o=1\\\\\cos90^o=0\\===================\\\\\sin180^o=\sin(2\cdot90^o)=2\sin90^o\cos90^o=2(1)(0)=0\\\\\cos180^o=\cos(2\cdot90^o)=\cos^290^o-\sin^290^o=0^2-1^2=-1[/tex]

If the outside temperature ranges from -5 degrees c to 40 degrees c, find the range in degrees fahrenheit.

Answers

Answer: -109

Step-by-step explanation:

if you make celcius into fahrenheit,

-5 degrees becomes 23 degrees

40 degrees becomes 104 degrees

-5 + 104 = -109

Answer:

Step-by-step explanation:

A recent survey by the cancer society has shown that the probability that someone is a smoker is P(S)=0.19. They have also determined that the probability that someone has lung cancer, given that they are a smoker is P(LC|S)=0.158. What is the probability (rounded to the nearest hundredth) that a random person is a smoker and has lung cancer P(S∩LC) ?


0.35


0.03


0.02


0.83

Answers

Answer:

P (S∩LC) = 0.03

Step-by-step explanation:

We are given that the probability that someone is a smoker is P(S)=0.19 and the probability that someone has lung cancer, given that they are a smoker is P(LC|S)=0.158.

Given the above information, we are to find the probability hat a random person is a smoker and has lung cancer P(S∩LC).

P (LC|S) = P (S∩LC) / P (S)

Substituting the given values to get:

0.158 = P(S∩LC) / 0.19

P (S∩LC) = 0.158 × 0.19 = 0.03

What is the least common multiple (LCM) of 3 and 7?

Answers

it is 21 :)))))))))))))))

let's find the least common multiple (LCM) of 3 and 7 is 21.

List the multiples of each number.

Multiples of 3: 3, 6, 9, 12, 15, 18, 21, ...

Multiples of 7: 7, 14, 21, 28, 35, 42, ...

identify the common multiples.

The common multiples of 3 and 7 are the numbers that appear in both lists. In this case, the number 21 is the smallest positive integer that appears in both lists Determine the LCM.

the LCM of 3 and 7 is 21.

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David and Tonya each cut a cylinder in half. The cross-section that results from David's cut is a rectangle. The cross-section that results from Tonya's cut is a circle.

Answers

Answer:

Tonya cut the cylinder vertically and David cut it diagonally.

Final answer:

David’s cut along the length of his cylinder resulted in a rectangular cross-section, while Tonya’s perpendicular cut resulted in a circular cross-section. This illustrates principles of geometric cross-sections and plane intersections with solids.

Explanation:

In the problem described, David and Tonya are each cutting a cylinder, a geometric shape. The cuts they make, and the cross-sections they create, depend on the orientation of their cuts in relation to the shape of the cylinder.

When David cuts the cylinder, his cross-section result is a rectangle. This implies that he made a longitudinal cut along the length of the cylinder, essentially splitting it from top to bottom.

When Tonya cuts her cylinder, the cross-section is a circle. This means she made a cross-sectional cut perpendicular to the length of the cylinder, slicing it into two equal half cylinders.

This problem illustrates the principles of geometric cross-sections and plane intersections with solids, which are part of the broader field of study in geometry.

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What is the mean absolute deviation of Dean's homework scores? 70, 95, 35, 90, 85

Answers

Answer:

18.

Step-by-step explanation:

Mean of the values = (70+95+35+90+85) / 5

=  75.

Mean absolute deviation  :-

70 - 75 = |-5|  = 5  (absolute value is taken

95 - 75 = 20

35-75 = 40

90-75 = 15

85-75 = 10

Mean Absolute Deviation = (5 + 20 + 40 + 15 + 10) /  5

= 18.

Answer: 18

Step-by-step explanation: it was correct on ttm

Use the x-intercept method to find all real solutions of the equation.
x^3-11x^2+31x-21=0

Answers

Answer:

c. [tex]x=1,3,\:or\:7[/tex]

Step-by-step explanation:

The given equation is

[tex]x^3-11x^2+31x-21=0[/tex]

To find all real solutions using the x-intercept method, we to graph the corresponding function using a graphing tool.

The corresponding function is;

[tex]f(x)=x^3-11x^2+31x-21[/tex]

From the graph the x-intercepts are

(1,0),(3,0) and (7,0).

Therefore the real solutions are

[tex]x=1,3,\:or\:7[/tex]

Answer:

C. is the answer

Step-by-step explanation:

Find the surface area of the figure

Answers

Answer:

[tex]\large\boxed{S.A.=1,119\ in^2}[/tex]

Step-by-step explanation:

We have:

two triangles with base b = 17in and height h = 7in

two rectangles with length l = 17in and width w = 10in

two rectangles with length l =11in and width w = 10in

one rectangle with length l = 8in and width w = 11in

one rectangle with length l = 15in and width w = 11in

one rectangle with length l = 17in and width w = 11in

The formula of an area of a triangle:

[tex]A_\triangle=\dfrac{bh}{2}[/tex]

b - base

h - height

The formula of an area of a rectangle:

[tex]A_{\boxed{\ }}=lw[/tex]

l - length

w - width

Calculate:

[tex]A_\triangle=\dfrac{(17)(7)}{2}=59.5\ in^2\\\\A_1=(17)(10)=170\ in^2\\\\A_2=(11)(10)=110\ in^2\\\\A_3=(8)(11)=88\ in^2\\\\A_4=(15)(11)=165\ in^2\\\\A_5=(17)(11)=187\ in^2[/tex]

The Surface Area:

[tex]S.A.=2A_triangle+2A_1+2A_2+A_3+A_4+A_5[/tex]

Substitute:

[tex]S.A.=2(59.5)+2(170)+2(110)+88+165+187=1,119\ in^2[/tex]

An amusement park ride has cars that move around a circular track at the rate of 16 revolutions in 20 seconds. To the nearest hundredth, the angular velocity of the cars is radians per second.

Answers

Answer:

[tex]5.03\frac{rad}{sec}[/tex]

Step-by-step explanation:

To find the angular velocity divide the revolutions by the time

so

[tex]\frac{16}{20}=0.8\frac{rev}{sec}[/tex]

Remember that

[tex]1\ rev=2\pi \ rad[/tex]

Convert rev/sec to rad/sec

[tex]0.8\frac{rev}{sec}=0.8*(2\pi)=1.6 \pi\frac{rad}{sec}[/tex]

assume [tex]\pi=3.1416[/tex]

[tex]1.6(3.1416)=5.03\frac{rad}{sec}[/tex]

Answer:

5.03

Step-by-step explanation:

Which system of linear inequalities is graphed?

Answers

Both lines are dotted so no equation should include equal to in it.

The shaded area is on the left side .

The correct answer would be y>2x+1 and x+y = -2

The 3rd answer is correct.

Answer:

y>2x+1 and x+y < -2 represent the graph line.

Step-by-step explanation:

Given : graph .

To find : Which system of linear inequalities is graphed

Solution : We have given graph with two line both lines are dotted line and shaded down.

Equation of line form  : y = mx + b.

Where, m = slope ,  b= y intercept.

Line x+y < -2 less than sign for shaded down and y intercept -2.

and y>2x+1.

Therefore, y>2x+1 and x+y < -2 represent the graph line.

Please help me out.............

Answers

Since the sides are equal the angels have to be equal too

5x-20=2x+37

3x=57

X=19

Fill in the blank to make the the equation true

__________ x 9/5 = -27

Answers

Answer:

-15

Step-by-step explanation:

Multiply the whole equation by the inverse of the multiplier of the blank. Then you get ...

___ × 1 = (-27)×(5/9) = -15

The blank filled with -15 will make the equation true.

We could represent the blank as a variable o make solving the equation easier.
Let’s make the variable x.
Our equation is now x9/5=-27
Now, divide both sides by 9/5 to isolate x.
(Hint, the decimal form of 9/5 is 1.8, so simply divide -27 by 1.8)
-27/1.8=-15
X=-15
Hope this helps!

A father who is 42 years old has a son and a daughter. The daughter is three times as old as the son. In 10 years, the sum of all their ages will be 100 years. How old are the two siblings at present? PLEASE HELP!!!!!!!!!!!!!!!!

Answers

Answer:

The daughter is 36 years old and the son is 12 years old.

12 decreased by twice a number is the same as 8 times the sum of the number and four. What is the number?

Answers

The answer you're looking for is -2

12 - 2×(n)= 8×4+(n)

12 - 2×(-2)=16

8×4+(-2)=16

Need help with Geometry

Answers

Answer:

Answer: 56*pi

Step-by-step explanation:

The easiest way is to find the area of the circle and subtract the area of the sector.

Area of the circle

d = 16 cm              given

d = 2*r                   definition

16 = 2*r                  divide by 2

16/2 = 2r/2

r = 8

Area of the circle = pi * r^2

Area of the circle = pi * 8^2

Area of the circle = 64 pi

Area of the sector

Area of sector = (theta/360) * pi * r^2

Area of sector = 45/360 * pi * 64

Area of sector = 1/8 * pi * 64

Area of sector = 8 * pi

Area of the shaded area

Area of the shaded area = 64 * pi - 8*pi = 56*pi

Note: There is a shorter way, but one can never be confident of getting an angle greater than 180 correct.

360 - 45 = 315

Area of the sector = 315/360 * pi * r2

Area of the sector = 7/8 * pi * 64

Area of the sector = 7 * pi * 8

Area of the sector = 56*pi

True or false (Picture provided)

Answers

Hello!

The answer is: True.

Why?

A counterexample is a way that we can prove that something is not true about a mathematical expression or equation, it could be considered as an exception to a rule, so to check if the answer is true or false, we must prove that a counterexample of the given expression is 0°, so:

The given expression is:

[tex]sinytany=cosy[/tex]

Then,

[tex]sin(0)*\frac{sin(0)}{cos(0)}=cos(0)\\\\0*\frac{0}{1}=1\\\\0*0=1\\0=1[/tex]

We can see that the equation is not fulfilled, so 0° is a counterexample of [tex]sinytany=cosy[/tex] and the answer is true.

Have a nice day!

If the radius of a circle is 14 ft, then the diameter of the circle is _____.

7 ft
28 ft
42 ft
87.92 ft

Answers

Answer:

The answer is 28ft.

Step-by-step explanation:

A radius will always be exactly half of the diameter: meaning, the diameter is double the length of the radius.

A. concave dodecagon

B. Concave hexagon

C. Convex hexagon

D. Convex dodecagon

Answers

Answer:

bro whats the question

Step-by-step explanation:

James thought of a number and divided it by 9.

What can he do to get back his original number?

A) multiply by 9.
B) add 9.
C) divide by 9 again.
D) subtract 9.

Answers

The correct answer is A.

Example: 36 divided by 9= 4 and 4 x 9 = 36

Example: 72 divided by 9= 8 and 8 x 9 = 72

Hope this helps.

To get back the original number after dividing by 9, one should multiply the result by 9, because multiplication and division are inverse operations.

The student's question asks: James thought of a number and divided it by 9. What can he do to get back his original number? The correct answer is (A) multiply by 9. When a number is divided by 9 to undo this operation one must multiply it by 9. This is because multiplication is the inverse operation of division. Therefore, if James wants to obtain his original number back, he should take the result he got after dividing by 9 and multiply it by 9.

the starting salary at a company is $38000 per year.the company automatically gives a raise of 3.5% per year.write the explicit and recursive frmulas for the geometric sequence formed by the salary increase.

Answers

Final answer:

The explicit formula for the salary increases represented as a geometric sequence is a_n= 38,000(1.035)^(n-1), and the recursive formula is a_1= $38,000 and a_n= a_(n-1) × 1.035 for n > 1, reflecting an annual raise of 3.5%.

Explanation:

The starting salary at a company is $38,000 per year with an annual raise of 3.5%. To represent the salary increases as a geometric sequence, we need both explicit and recursive formulas.

The explicit formula for a geometric sequence is an= a1 × r(n-1), where a1 is the first term, r is the common ratio, and n is the term number. In this case, a1= $38,000 and r = 1.035 (since the salary increase is 3.5%, or 0.035 in decimal form, plus the original amount, hence 1 + 0.035). Therefore, the explicit formula is an= 38,000(1.035)(n-1).

The recursive formula defines each term based on the previous term. It can be written as a1= $38,000, an= a(n-1) × 1.035, for n > 1. This means that starting from the second year (when n > 1), the salary is obtained by multiplying the previous year's salary by 1.035.

Please help!!!
The area of the green square is 9 ft2. The area of the yellow square is 25 ft2.
What is the area of the red square (labelled "b" in the diagram)?

Answers

Answer:

the answer is 16Ft^2

Step-by-step explanation:

Square A's area is 9 so take its square root =3

then do the same for Square c =5

then use pythagram theory which is

3^2 + 5^2 = 4^2 = 16

Answer:

area = 16 ft²

Step-by-step explanation:

The area of the green square = 9 ft²

area of the yellow square = 25 ft²

Area of the red square can be computed as follows:

area of a square = L²

Since one side of each triangle forms a part of the triangle knowing the length of sides of the green and yellow triangle can be use to get the sides of the red square and invariably the area.

Green square

L² = 9

square both sides

√L² = √9

L = 3 ft

Yellow square

L² = 25

square both sides

√L² = √25

L = 5 ft

use Pythagoras theorem to get the third side of the triangle which is the b

c² = a² + b²

b² = c²  - a²

a = 3 ft

c = 5 ft

b² =  5² - 3²

b² = 25 - 9

b² = 16

square both sides

√b² = √16

b = 4

Red square

area = L²

area = 4²

area = 16 ft²

A college football stadium holds 45,000 fans. In a random sample of 30 fans, 26 were wearing the colors of the home team. Predict the number of fans who are wearing the colors of the home team.

Answers

Answer:

38,999

Step-by-step explanation:

In your sample you have 26 out of 30. I like to get that number into a percentage, so you do 26 divided by 30

26/30 = .8666

Then you take your total amount of fans, 45,000 and multiply it by your percentage wearing team colors.

45,000 x .8666 = 38,999.97

Since you can't have .97 of a person, your round it down to 38,999.

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