15 milliliters of pure drug are in 500 mL of solution. What is the percent strength of the solution?

Answer: The answer is 10

Step-by-step explanation:

Answer:

The numerator is the top number of a fraction.

your welcome! <3

Answer:

Numerator is on the the top of the fraction

Step-by-step explanation:

x

_     x is the numerator

y

The number of different codes as the letters A or C must come first and digits can be repeated is 2000

Permutations and combinations are a subset of the study of finite, discrete structures that are known as combinatorics. Combinations include the selection of items without respect to order, whereas permutations are precise selections of elements within a set where the order of the elements is significant.  

Here we have,

The locker combination code consists of one letter and 3 digits  

Here we need to find the number of different codes If the letter A or C must come first and digits can be repeated.

Given that the first letters are A and C

Here number of ways that A and C can be chosen at first = 2

As we know Number of digits = 10  [ including 0, 0 to 9 ]

Number of arrangements that can be chosen from 10 digits

= 10 × 10 ×10   [ Since repetition is allowed ]  

Therefore,

The possible number of different codes = 2 × 10 × 10 ×10 = 2000

Therefore

The number of different codes as the letters A or C must come first and digits can be repeated is 2000

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Answer:

I got (-1,-4) and (3,0) When I graphed with Desmos.  I do no see that solution.

Step-by-step explanation:

The expressions given in the questions mean that the least common denominator is the least common multiple.

According to the question,

We have the following information:

We have three questions of fractions which are either in addition or subtraction.

Now, we will only look at the denominators of these fractions. And note that the least common multiple is same as the least common denominator.

For first one, it is 6 and 4:

Each multiple of 6: 2*3

Multiples of 4:2*2

The least common multiple of 6 and 4: 12

The least common denominator is 12.

For second one, it is 7 and 3.

Each multiple of 7: 7

Multiple of 3: 3

The least common multiple of 7 and 3: 21

The least common denominator of 7 and 3: 21

For third one, it is 8 and 2.

Multiples of 8: 2*2*2

Multiples of 2: 2

The least common multiple of 8 and 2: 8

The least common denominator is 8.

Hence, the expressions given in the questions mean that it is the least common multiple.

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Answer:

45.90

Step-by-step explanation:

$60.00 15% off = $51.00

$51.00 10% off = 45.90

Answer:

27.64

Step-by-step explanation:

Answer: 243x^5 + 2025x^4y + 6750x^3y^2 + 11250x^2y^3 + 9375xy^4 + 3125y^5

Step-by-step explanation:

1. To find each term, use BINOMIAL EXPANSION THEOREM (best to look up theorem on your own).

2. Expand the summation (after finding each term).

3. Simplify the exponents for each term.

> 1 • (3x)^5 • (5y)^0 + 5 • (3x)^4 • (5y)^1 + . . . + 1 • (3x)^0 • (5y)^5

4. Simplify.

The population variance of the given data is 3.2.

Given  Σ(x - 38)² = 64 .

We know that the population variance of the data is the square of the standard deviation.

Now the standard deviation for the population is given by

σ =√(Σ(x - 38)² / N)

Again variance = σ ²

Let us first calculate σ .

σ = √(64/20) = √3.2

variance

= σ ²

= (√3.2)²

= 3.2

Therefore the variance of the population is 3.2

In probability theory and statistics, variance is the predicted squared variation of a random variable from its population mean or sample mean. Dispersion, or how far apart from the mean a set of data are from one another, is measured by variance.

A few ideas that use variance include descriptive statistics, statistical inference, hypothesis testing, goodness of fit, and Monte Carlo sampling.

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Answer:

1/2

Step-by-step explanation:

u replace x with -3

=4(2)-³

=4(0.125)

=0.5

=1/2

1. The equation in​ a slope-intercept form describing the relationship is y = -4000x + 27000.

2. The daily sales of Fun Noodles at the price of $5.50 is  5000.

The Pool Fun Company has learned that, by pricing a newly released Fun Noodle at $5, sales will reach 7000 Fun Noodles per day during the summer. Raising the price to $6 will cause the sales to fall to 3000 Fun Noodles per day.

The relationship between sales​ price, x, and the number of Fun Noodles​ sold, ​ y, is linear. The ordered pair are (5, 7000) and (6, 3000).

The equation in slope intercept form describing the relationship is as follows:

1. y = mx + b

where

Therefore,

m = 3000 - 7000 / 6 - 5

m = - 4000

Let's find the y-intercept using (6, 3000)

3000 = -4000(6) + b

3000 + 24000 = b

27000 = b

Hence, the equation is y = -4000x + 27000

2. The daily sales of Fun Noodles at the price of $5.50 can be computed as follows;

y = -4000(5.5) + 27000

y = -22000 + 27000

y = 5000

Therefore, the daily sales is 5000.

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Answer:

Below

Step-by-step explanation:

If she buys a loaf of bread she has   only 6 dollars for tomatoes

   $ 6 / 1.20 $/POUND = 5 POUNDS OF TOMATOES

(8-2) / 1.20 = # TOMATOES

Answer: Force = 300 NewtonsMass = 25 kgAcceleration = Force / Mass = 300 Newtons / 25 kg = 12 metres / second^2.

Second law of Newton

Data:

Newton's second law formula

          F = m * a

We clear for acceleration

  [tex]\boldsymbol{\sf{\dfrac{F}{m}=\dfrac{\not{m}*a}{\not{m}} \iff \ \dfrac{F}{m}=a \longmapsto \ a=\dfrac{F}{a} }}[/tex]

                                                        [tex]\boldsymbol{\sf{a=\dfrac{300 \ N}{25 \ kg} }}[/tex]

We know very well that to find the acceleration, we decompose N= Kg*m/s^2.

                                                        [tex]\boldsymbol{\sf{a=\dfrac{300 \not{kg}*\frac{m}{s^2} }{25 \not{kg}} }}[/tex]

                                                        [tex]\boldsymbol{\sf{a=12 \ \dfrac{m}{s^{2}} }}[/tex]

Answer: tell me the soulation like how do you solve it then I can help

Step-by-step explanation:

A property which is used in the calculation above is: Commutative Property of Multiplication.

The Commutative Property of Multiplication states that when three (3) numbers are multiplied, the end result (output) would always be the same regardless of the way the numbers are arranged and grouped.

This ultimately implies that, re-arranging or regrouping the order of numbers that are being multiplied does not change the end result (output) or product.

Mathematically, the Commutative Property of Multiplication is represented by this mathematical expression:

a · (b) = b · (a)

By applying the Commutative Property of Multiplication to the calculation, we have:

(64⋅25)⋅4 = 6400

64⋅(25⋅4) = 6400

64⋅(100) = 6400

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Answer:
30-2=28+542=570

Step-by-step explanation:

Simplification of the given expression ( a + b ) / ( a - b ) for the given values of a and b is equal to ( 4 / 1 ).

As given in the question,

Given expression:

( a + b ) / ( a - b )

Simplification of the given expression ( a + b ) / ( a - b ) for the value

a = 5 and b = 3 is given by,

( a + b ) / ( a - b ) we get,

( a + b ) / ( a - b )

= ( 5 + 3 ) / ( 5 - 3)

= ( 8 ) / ( 2 )

= ( 4 × 2 ) / ( 2 )

= ( 4 / 1 )

Therefore, simplification of the given expression ( a + b ) / ( a - b ) for the given values of a and b is equal to ( 4 / 1 ).

The complete question is:

Simplify the given expression:

(a + b)/ (a -b) = ?

For a=5 and b=3

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Answer:

m = -5/3

Step-by-step explanation:

Slope is defined as the change in y / change in x or [tex]\frac{y2-y1}{x2-x1}[/tex]

The order of the points don't matter so we can do:

[tex]\frac{-1-(-6)}{5-8}=\frac{-5}{3}[/tex]

-5/3 is as simple as the fraction can be.

The value of one-sixth times quantity x plus 24 end quantity equals negative 6 is -180.

The expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both. Addition, subtraction, multiplication, and division are all possible mathematical operations.

In this case, the expression given will be illustrated as:

1/6x + 24 = -6

Collect like terms

x / 6 = -6 - 24

x/6 = -30

Cross multiply

x = -30 × 6

x = -180

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Answer:

0

Step-by-step explanation:

if we x and y = 0

if we have 3x + 3y= 0

Answer:

2.4

Step-by-step explanation:

The bottom is a right triangle.  You know the 2 legs, you need the hypotenuse.

[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]

[tex]1^{2}[/tex] + [tex]1^{2}[/tex] = [tex]c^{2}[/tex]

1 + 1 = [tex]c^{2}[/tex]

2 = [tex]c^{2}[/tex]

[tex]\sqrt{2}[/tex] = [tex]\sqrt{c^{2} }[/tex]

[tex]\sqrt2[/tex] = c

Now we know the 2 legs for the larger triangle on top.

[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]

[tex]\sqrt{2} ^{2}[/tex] + [tex]2^{2}[/tex] = [tex]c^{2}[/tex]

2 + 4 = [tex]c^{2}[/tex]

6 = [tex]c^{2}[/tex]

[tex]\sqrt{6}[/tex] = [tex]\sqrt{c^{2} }[/tex]

[tex]\sqrt{6}[/tex] = c

[tex]\sqrt{6}[/tex] rounded to the tenths place is 2.4

The equation of a line is y=-1/4x-7, (option 1)

A straight line's general equation is y = mx + c, where m denotes the gradient and y = c denotes the point at which the line crosses the y-axis.

Write the equation in the form y = mx + b to find the slope m and the y-intercept. This will allow you to graph the equation using the slope and y-intercept.

Given:-

Equation of the line is y=4x+8 

The point through which the line passes (-8,4).

here the slope of the line is m1=4

To find the perpendicular line we know the formula

m1*m2=-1

By putting the value of m1 we get m2= -1/4

By using the one-point formula of the line we have

=>(y-y1)=m2*(x-x1)

By putting the values of y1 and x1 we get

(y1,x1)=(-8,4)

=>(y+8)=-0.25*(x-4)

y+0.25x+7=0

Hence the desired equation of the line is y=-1/4x-7

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Answer:

Step-by-step explanation:

l = length

w = width = 2.5

a = area = 12.5

l = a/w = 12.5/2.5 = 5

so the answer is l = 5

By examining the slope at different points, we can see that the slope is constant.

The term slope has to do with a measure of how steep the line of best fit is for a relationship that exists between two variables. In this case, we are considering the relationship between the amount paid and the time taken.

A straight line graph is expected to have a constant slope. To show that the slope is constant, let us look at two points on the graph; (0, 0) (9, 675) and (0, 0) (7, 525)

In the first case;

m = [tex]y_{2} - y_{1} /x_{2} - x_{1}[/tex]

m = 675 - 0/9 - 0

m = 75

In the second case;

m = [tex]y_{2} - y_{1} /x_{2} - x_{1}[/tex]

m = 525 - 0/7 - 0

m = 75

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[tex]{ \purple{ \tt{x = 3}}}[/tex]

[tex]{ \blue{ \sf{ {6}^{2} - x - 12 = 0}}}[/tex]

[tex]{ \blue{ \sf{36 - x - 12 = 0}}}[/tex]

Take 12 as common

[tex]{ \blue{ \sf{ \cancel{12}(3 - x) { \cancel{-12} = 0}}}}[/tex]

[tex]{ \blue{ \sf{3 - x = 0}}}[/tex]

[tex]{ \red{ \boxed{ \green{ \tt \overbrace{ \underbrace{x = 3}}}}}}[/tex]

Answer:

see explanation

Step-by-step explanation:

the median is a segment that goes from the vertex of a triangle to the midpoint of the opposite side.

Then Q is the midpoint of PR

given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint M is

M = ( [tex]\frac{x_{1}+x_{2} }{2}[/tex] , [tex]\frac{y_{1}+y_{2} }{2}[/tex] ) ← midpoint formula

use this formula to find the coordinates of Q

with (x₁, y₁ ) = R (0, 2b ) and (x₂, y₂ ) = P (2a, 0 )

Q = ( [tex]\frac{0+2a}{2}[/tex] , [tex]\frac{2b+0}{2}[/tex] ) = ( [tex]\frac{2a}{2}[/tex] , [tex]\frac{2b}{2}[/tex] ) = (a, b )

---------------------------------------------------

use the distance formula to find the lengths of median MQ and hypotenuse PR of Δ MRP

d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]

with (x₁, y₁ ) = M (0, 0 ) and (x₂, y₂ ) = Q (a, b )

MQ = [tex]\sqrt{(a-0)^2+(b-0)^2}[/tex] = [tex]\sqrt{a^2+b^2}[/tex]

repeat with (x₁, y₁ ) = P (2a, 0 ) and (x₂, y₂ ) = R (0, 2b )

PR = [tex]\sqrt{(0-2a)^2+(2b-0)^2}[/tex]

     = [tex]\sqrt{(-2a)^2+(2b)^2}[/tex]

     = [tex]\sqrt{4a^2+4b^2}[/tex]

     = [tex]\sqrt{4(a^2+b^2)}[/tex]

     = 2[tex]\sqrt{a^2+b^2}[/tex]

then MQ is half PR

The order of least to greatest of given decimal numbers is 3.75, 3.9, 4.2, 4.25, 4.5.

The given decimal number are 4.5, 3.9, 4.25, 3.75, 4.2

Numerical order is a way of arranging a sequence of numbers. This could be in ascending or descending order.

Ascending order: Ascending order means to arrange numbers in increasing order, that is, from smallest to largest.

The order of decimal numbers

Now, least to greatest of decimal numbers is

3.75<3.9<4.2<4.25<4.5

Therefore, the order of least to greatest of given decimal numbers is 3.75, 3.9, 4.2, 4.25, 4.5.

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1) The percentage of students who will get a score below 275 is; 0.15%

2) Yes, any score below 275 is significantly different from the mean.

The empirical rule states that for a normal distribution, 68% of the distribution are within one standard deviation from the mean, 95% are within two standard deviation from the mean and 99.7% are within three standard deviations from the mean.

The formula for z-score is;

z = (x' - μ)/σ

where;

x' is sample mean

μ is population mean

σ is standard deviation

1) We are given;

Population mean; μ = 500

Sample mean; x' = 275

standard deviation; σ = 75

Thus;

z = (275 - 500)/75

z = -3

This is 3 standard deviations from the mean. Thus;

The percentage of students who will get a score below 275 is;

(100 - 99.7)/2 = 0.15%

2) Yes, any score below 275 is more than 3 standard deviations away from the mean and can be considered significantly different from the mean.

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Answer:

Step-by-step explanation: 9091.6

Answer:

9091.6

Step-by-step explanation: