What's half an hour mean?

Answer:

21

Step-by-step explanation:

btw is it LDC or GCD?

Answer:

-3x - 2y + 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

3 + 5x - 4y + 2y - 8x

Step 2: Simplify

Answer:

3+5x−4y+2y−8x is the equivalent ti 3-3x-2y

Step-by-step explanation:

3+5x−4y+2y−8x

3+5x-8x-4y+2y

3-3x-2y

9514 1404 393

Answer:

  (c) 5 +15/4 +45/16 +135/64 +...; 20

Step-by-step explanation:

The first term of this geometric series is 5. The common ratio (r) is 3/4. The sum of the infinite series is ...

  5(1/(1 -r)) = 5/(1 -3/4) = 5/(1/4) = 20 . . . series sum

Of course, the terms are ...

  5 + 5(3/4) +5(3/4)² + 5(3/4)³ + ...

  = 5 + 15/4 + 45/16 +135/64 + ... . . . series

Together, these observations match choice C.

Answer:

Tangent ratio is the ratio of opposite side to adjacent side of a right triangle. Same as the sine and cosine ratios, tangent ratios can be used to calculate the angles and sides of right angle triangles.

Step-by-step explanation:

Answer:

(x, y) ––> (x – 2, y – 1)

Step-by-step explanation:

Two units left would make it (x – 2, y).

Then two units down would make it (x – 2, y – 2)

Then one unit up would make it (x – 2, y – 1)

Answer:

independent variable is s and the dependent variable is c

Step-by-step explanation:

Answer:

is not the top it is this

Step-by-step explanation:

The equation c=0.09s  represents the amount c  (in dollars) of commission a salesperson receives for making a sale of s dollars.

The independent variable is s

.

The dependent variable is c

.

Answer:

No solution.

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

Where the 2 lines intersect is the solution set to the systems of equations.

If the 2 lines are parallel, then they will have no solution.

If the 2 lines are the same, then they will have infinite amount of solutions.

According to the graph, our lines are parallel. Therefore, we have no solution.

Here is the full question:

[tex]The \ shell \ of \ the \ land \ snail \ Limocolaria \ martensiana \ has \ two \ possible \ color[/tex][tex]forms: \ streaked \ and \ pallid. \ In \ a \ certain \ population \ of \ these \ snails, \ 60\% \ o f \ the[/tex][tex]individuals \ have \ streaked \ s hells.\ 16 \ Suppose \ that \ a \ random \ sample \ of \ 10 \ snails[/tex][tex]is \ to \ be \ chosen \ from \ this \ population. \ F ind \ the \ probabilit y \ that \ the \ percentage \ of[/tex]

[tex]streaked-shelled \ snails \ in \ t he \ sample \ will \ be[/tex]

[tex](a) 50\%. \ (b) 60\%. \ (c) 70\%.[/tex]

Answer:

(a) 0.2007

(b) 0.2510

(c) 0.2150

Step-by-step explanation:

Given that:

The sample size = 10

Sample proportion= 60% 0.6

Let X represents the no of streaked-shell snails.

[tex]X \sim Binom (n =1 0, p = 0.60)[/tex]

The Probability mass function (X) is:

[tex]P(X =x)= (^n_x) p^x(1-p)^{n-x}; x = 0,1,2,3...[/tex]

The Binomial probability with mean μ = np

= 10 * 0.6

= 6

Standard deviation σ = [tex]\sqrt{np(1-p)}[/tex]

= [tex]\sqrt{10*0.6*(1-0.6)}[/tex]

= 1.55

The probability that the percentage of the streaked-shelled snails in the sample will be:

a)

[tex]P(X = 0.5) = ^nC_x p^x (1 -p) ^{(n-x)}[/tex]

[tex]= ^{10}^C_5 * (0.6)^5(1-0.6)^{10-5}[/tex]

[tex]= \dfrac{10!}{5!(10-5)!} * (0.6)^5(1-0.6)^{10-5}[/tex]

= 0.2007

b)

[tex]P(X = 0.6) = ^nC_x p^x (1 -p) ^{(n-x)}[/tex]

[tex]= ^{10}^C_6 * (0.6)^6(1-0.6)^{10-6}[/tex]

[tex]= \dfrac{10!}{6!(10-6)!} * (0.6)^6(1-0.6)^{10-6}[/tex]

= 0.2510

c)

[tex]P(X = 0.7) = ^nC_x p^x (1 -p) ^{(n-x)}[/tex]

[tex]= ^{10}^C_7 * (0.6)^7(1-0.6)^{10-7}[/tex]

[tex]= \dfrac{10!}{7!(10-7)!} * (0.6)^7(1-0.6)^{10-7}[/tex]

= 0.2150

Answer: 2 batches

Step-by-step explanation: 2 2/3 divided by 1 1/3 = 2

Answer:

33 is a composite number ;)

Step-by-step explanation:

tan(2x) = sin(2x)/cos(2x) = 2sinxcosx/(cos^2x - sin^2x).

Dividing the num- and denominator by sinxcosx, we get

2/(cosx/sinx - sinx/cosx) = 2/(cotx - tanx)

cotA + cotB = cosA/sinA + cosB/sinB

We just add them like fractions, with a common denominator of sinAsinB

(cosAsinB + sinAcosB)/sinAsinB

Note that sinAcosB + sinBcosA = sin(A+B)

Therefore we have

sin(A+B)/sinAsinB

Answer:

-6 14/15

Step-by-step explanation:

Answer:

The solution to the equation [tex]\frac{1}{4}x+2=\frac{-5}{8}x-5[/tex] is [tex]\mathbf{x=-8}[/tex]

Option A is correct option.

Step-by-step explanation:

What is the solution to the equation [tex]\frac{1}{4}x+2=\frac{-5}{8}x-5[/tex]

Solving the equation

[tex]\frac{1}{4}x+2=\frac{-5}{8}x-5[/tex]

Subtracting 2 on both sides

[tex]\frac{1}{4}x+2-2=\frac{-5}{8}x-5-2\\\frac{1}{4}x=\frac{-5}{8}x-7[/tex]

Adding 5/8x  on both sides

[tex]\frac{1}{4}x+\frac{5}{8}x=\frac{-5}{8}x-7+\frac{5}{8}x\\\frac{2x+5x}{8}=-7 \\\frac{7x}{8}=-7[/tex]

Multiply both sides by 8/7

[tex]\frac{7x}{8}\times \frac{8}{7}=-7 \times \frac{8}{7}\\x=-8[/tex]

So, we get x = -8

The solution to the equation [tex]\frac{1}{4}x+2=\frac{-5}{8}x-5[/tex] is [tex]\mathbf{x=-8}[/tex]

Option A is correct option.

Answer:

D sound

Step-by-step explanation:

i belive is sound

Answer:

sound

Step-by-step explanation:

speakers make sound waves, not motion, light, or heat.

Answer:

$5.28

Step-by-step explanation:

There are 16 table spoons in a cup, and since the entire recipe calls for 2 cups, 32 table spoons would be needed. If each lemon yields about 2 tablespoons, then that means 16 lemons would be needed. To get the price, we multiply 0.33 x 16, and get 5.28.

Answer:

94

Step-by-step explanation:

Answer:

94

Step-by-step explanation:

Answer:

2x^2-7x-4

Step-by-step explanation:

=2x^2-8x+x-4

=2x^2-7x-4

Answer:

Child ticket

Step-by-step explanation:

Cost per senior citizen = $10.50

Cost per adult = $15.75

Cost per child = $8.25

Since the cost of the 2 additional ticket is $16.50

Then the only ticket of which two can be purchased with that amount is :

$16.50 / 2

= $8.25

Cost of children ticket.

The human-year age of a dog that is 6 years old is 42.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that most pets age at a different rate than their human companions. For example, a 3-year-old dog is often considered to be 21 in human years.

The human-year age of a dog that is 6 years old will be,

3 years old dog = 21 human gae

6 year old dog = 21 x 2 = 42 human age

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Answer:

[tex]D = 3\sqrt{2}[/tex]

Step-by-step explanation:

Given

[tex](x_1,y_1) = (3,-4)[/tex]

[tex](x_2,y_2) = (6,-7)[/tex]

Required

Determine the distance between the two points

Distance (D) is calculated as:

[tex]D = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]

Substitute values for x's and y's

[tex]D = \sqrt{(6 - 3)^2 + (-7 - (-4))^2}[/tex]

[tex]D = \sqrt{(6 - 3)^2 + (-7 +4)^2}[/tex]

[tex]D = \sqrt{(3)^2 + (-3)^2}[/tex]

[tex]D = \sqrt{9+9}[/tex]

[tex]D = \sqrt{18}[/tex]

Express as 9 * 2

[tex]D = \sqrt{9*2}[/tex]

Split:

[tex]D = \sqrt{9}*\sqrt{2}[/tex]

[tex]D = 3*\sqrt{2}[/tex]

[tex]D = 3\sqrt{2}[/tex]

Step-by-step explanation:

i think is the answer is d

Northern Italy is described in the passage of trade fairs in France.

Option A is the correct answer.

Trade fairs, also known as trade shows or exhibitions, are events where companies showcase their products or services to potential customers, partners, and investors.

We have,

The region described in the passage is not mentioned directly, but it can be inferred that the trade fairs in France, Germany, and Holland were part of a larger trading network that extended from Egypt to the Baltic.

Based on this information, we can eliminate options B, C, and D.

Northern Italy was also an important region for trade and finance during this time period, but it is not explicitly mentioned in the passage.

Therefore,

The most likely answer is Northern Italy.

Thus,

Northern Italy is described in the passage of trade fairs in France.

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Answer:

The better value is 5pounds for $11

Step-by-step explanation:

2.75×5= $13.75

so the 5 pounds for $11 would be better because the other option would cost $13.75 for the same amount

Answer:

buying the box for $11 is the better option

2.75×5=13.75

so 5 pounds separately would be $13.75

Answer:

[tex] \frac{6}{7} x - \frac{2}{5} y + \frac{5}{7} (y + x) \\ = ( \frac{6}{7} + \frac{5}{7} )x + ( \frac{5}{7} - \frac{2}{5} )y \\ = \frac{11}{7} x + \frac{15}{35} y \\ = \frac{11}{7} x + \frac{3}{7} y \\ = \frac{1}{7} (11x + 3y)[/tex]

Answer:

The answer is below

Step-by-step explanation:

develop an estimate for each of the following situations.

(a) The cost of a 500- mile automobile trip, if gasoline is $4.00 per gallon, vehicle wear and tear is $0.65 per mile, and our vehicle gets 25 miles per gallon.

(b) The total number of hours in the average human life, if the average life is 75 years.

(c) The number of days it takes to travel around the equator using a hot air balloon, if the balloon averages 100 miles per day, the diameter of the earth is ~4,000 miles.

Solution:

a) The total trip = 500 mile

Cost of wear and tear = $0.65 per mile = $0.65 * 500 mile = $325

25 miles takes 1 gallon of gasoline at a cost of $4 per gallon

Cost of gasoline = $4 per gallon * 500 miles / 25 miles per gallon = $80

cost of a 500-mile automobile trip = Cost of wear and tear + Cost of gasoline = $325 + $80 = $405

b) Average life of human = 75 years.

1 year = 365 days, 1 day = 24 hours

Average life of human in hours = 75 years * 365 days * 24 hours =657000 hours

c) Diameter of earth = 4000 miles

Distance of equator = diameter of earth = 4000 miles

100 mile per day

number of days for the balloon to travel round the earth = 4000 miles / (100 mile per day) = 40 days

Step-by-step explanation:

Realistic domain: t >= 0 (as time is non-negative)

When t = 0,

v(0) = -3(0)² + 73(0) + 50 = 50.

Hence Jennifer started with $5000.

Vertex = -b/2a = -(73)/2(-3) = 73/6.

When t = 73/6

v(73/6) = -3(73/6)² + 73(73/6) + 50 = 494.08.

The maximum value is $49,408.

Answer:

C and D

89 _> 12.50t -14

+14 +14

103 _> 12.5t

/12.5 /12.5

8.24 _> t

Answer:

[tex]2 \cos ^{2} (4x) - 1 = 0 \\ \cos ^{2} (4x) = \frac{1}{2} \\ \cos(4x) = \sqrt{ \frac{1}{2} } \\ 4x = { \cos }^{ - 1} ( \sqrt{ \frac{1}{2} } ) \\ x = \frac{ { \cos}^{ - 1} ( \sqrt{ \frac{1}{2} } )}{4} \\ x \isnt \: \frac{\pi}{2} [/tex]

Answer:

Step-by-step explanation:

Given the expression x - 5y = -15

x intercept occurs at y = 0

Substituting y = 0 into the expression

x - 5(0) = -15

x - 0 = -15

x = -15

Hence the x-intercept occurs at (-15, 0)

y intercept occurs at x = 0

Substituting x = 0 into the expression

0 - 5y = -15

-5y = -15

y = -15/-5

y = 3

Hence the y-intercept is at (0, 3)

Answer:

decrease 40%

Step-by-step explanation:

20/50 * 100 = 40