Find the equation of the line. Use exact numbers.

Y= ___x + ___

[tex] \frac{2x}{y} \: x = - 28 \: y = - 7[/tex]

[tex]2( - 28) \div ( - 7)[/tex]

[tex] \frac{ - 56}{ - 7} [/tex]

[tex] = 8[/tex]

The simplification of the given expression for x= -28 and y =-7 is 8.

Usually, simplification involves proceeding with the pending operations in the expression.

Simplification usually involves making the expression simple and easy to use later.

The given expression is 2x/y.

Substiute the given values;

x= -28 and y =-7

Then, 2x / y = 2(-28) / -7

= -56 / -7

= 8

Hence, the simplification of the given expression for x= -28 and y =-7 is 8.

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Answer:

0.5

Step-by-step explanation:

0.47058824

the 4 is in the tenths place

the 7 makes it turn to a 5

the answer would be 0.5 :)

Answer:

a) 20 ways

b) 10 ways

Step-by-step explanation:

When the order of selection/choice matters, we use Permutations to find the number of ways and if the order of selection/choice does not matter, we use Combinations to find the number of ways.

Part a)

We have to chose 2 objects from a group of 5 objects and order of choice matters. This is a problem of permutations, so we have to find 5P2

General formula of permutations of n objects taken r at time is:

[tex]nPr=\frac{n!}{(n-r)!}[/tex]

Using the value of n=5 and r=2, we get:

[tex]5P2=\frac{5!}{(5-2)!} =20[/tex]

Therefore, we can choose 2 objects from a group of 5 given objects if the order of choice matters.

Part b)

Order of choice does not matter in this case, so we will use combinations to find the number of ways of choosing 2 objects from a group of 5 objects which is represented by 5C2.

The general formula of combinations of n objects taken r at a time is:

[tex]nCr=\frac{n!}{r!(n-r)!}[/tex]

Using the value of n=5 and r=2, we get:

[tex]5C2=\frac{5!}{2!(5-2)!} =10[/tex]

Therefore, we can choose 2 objects from a group of 5 given objects if the order of choice does not matters.

Answer:

20

10

Step-by-step explanation:

just took the test

Answer:

first one is D

second is B

third is B

Step-by-step explanation:

Here is your answer

B) [tex]\huge{10}^{-2}[/tex]

REASON:

0.01

=1/100

=1/

[tex] {10}^{2} [/tex]

=

[tex] {10}^{ - 2} [/tex]

HOPE IT IS USEFUL

Answer: 10 to the negative second power

Step-by-step explanation: To write 0.01 as a power of 10, first notice that 0.01 is a decimal which means that the exponent on our power of 10 will be negative.

To determine the value of the exponent, count the number of places we would need to move the decimal point in order to get 1.0.

In this problem, we would need to move the decimal point 2 places to get 1.0 which means that the exponent on our power of 10 will b -2.

Therefore, 0.01 can be written as 10 to the negative 2nd power.

Answer:

140 ft²

Step-by-step explanation:

The figure is composed of a rectangle and a triangle

note triangle has a base = 16 - 12 = 4 ft

Area = area of rectangle + area of triangle

        = (16 × 8) + ([tex]\frac{1}{2}[/tex] × 4 × 6)

        = 128 + 12

        = 140 ft²

Answer:

Part a) [tex]\frac{AB}{A'B'}=\frac{BC}{B'C'} =\frac{AC}{A'C'}[/tex]

Part b) The dilation is an enlargement, because the sides of the image are larger than the sides of the original figure.(the scale factor is greater than 1)

Part c) The scale factor is [tex]3[/tex]

Step-by-step explanation:

Part a) Write the similarity statement

we know that

If two figures are similar, then the ratio of its corresponding sides is equal

so

[tex]\frac{AB}{A'B'}=\frac{BC}{B'C'} =\frac{AC}{A'C'}[/tex]

substitute the values

[tex]\frac{9}{27}=\frac{12}{36} =\frac{15}{45}[/tex]

[tex]\frac{1}{3}=\frac{1}{3} =\frac{1}{3}[/tex] ----> is true

therefore

the figures are similar

Part b) The dilation is an enlargement, because the sides of the image are larger than the sides of the original figure. (the scale factor is greater than 1)

Part c) we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

Let

z------> the scale factor

x-----> corresponding side of the image

y------> corresponding side of the original figure

so

[tex]z=\frac{x}{y}[/tex]

we have

[tex]x=A'B'=27\ units[/tex]

[tex]y=AB=9\ units[/tex]

substitute

[tex]z=\frac{27}{9}=3[/tex]

The scale factor is greater than 1

therefore

Is an enlargement

Answer:

get it down to a unit rate firstt by dividing the 129.5 by 7 dvds

$18.50

18.5x2=37

the 2 dvds were 37 dollars

Step-by-step explanation:

The basic operation that is used in finding the cost of n number of products is multiplication, if we know the cost of 1 article then we can find the cost of n numbers of articles by multiplying it with the cost of one article. Therefore, the cost price of 2 DVD's is $37.

Amee buys 7 DVDS for $129.50.

Thus,

The cost price of 7 DVDs is $129.50

We need to find the cost price of 2 DVDs.

First let us find the cost price of 1 DVD.

Therefore,

[tex]7 \;\rm{DVD's}= \$129.50\\1 \; \rm{DVD}=\frac{129.50}{7}\\1 \; \rm{DVD}=\$18.5[/tex]

Therefore, the cost price of 2 DVDs is $37.

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Answer:

C. b = -5/3

Step-by-step explanation:

9b2 + 30b + 25 =0

(3b)^2 + 30b +(5)^2  = 0  <---perfect square

(3b + 5)^2 = 0

(3b + 5) = 0

3b = -5

 b = -5/3

Answer

C. b = -5/3

Answer:

C. b = -5/3

Step-by-step explanation:

9b² + 30b + 25 = 0

We can factor: two numbers that add up to 30 and its' product is 225: 15 & 15.

So we have 9b² + 15b + 15b + 25 = 0.

We can change this to (3b + 5) (3b + 5), or (3b + 5)².

This means there is only one solution: 3b + 5 = 0.

This can be turned into 3b = -5 -> b = -5/3.

Answer:

11*w=x

Step-by-step explanation:

x= the amount of money he will have after w weeks

so, 11 times the amount of weeks will give you the amount he has after any number of weeks

Hey there!

When x=12 the equation would look like this: 3 + 5 * 12

Therefore, the answer is 63

Hope this helps you!

God bless ❤️

xXxGolferGirlxXx

To find the largest of two numbers when given their product and sum, we can use the quadratic formula.  Let's denote the numbers as 'a' and 'b'. We know that 'a * b = 24' and 'a + b = 10'. We can rewrite the second equation as 'b = 10 - a' and substitute it into the first equation.  Solving the quadratic equation, we find that the larger of the two numbers is 6.

To find the largest of two numbers when given their product and sum, we can use the quadratic formula. Let's denote the numbers as 'a' and 'b'. We know that 'a * b = 24' and 'a + b = 10'. We can rewrite the second equation as 'b = 10 - a' and substitute it into the first equation.

Substituting 'b' into the equation 'a * b = 24', we get 'a * (10 - a) = 24'. Expanding and rearranging the equation, we have 'a^2 - 10a + 24 = 0'. Solving this quadratic equation, we find that the values of 'a' are 4 and 6. Therefore, the larger of the two numbers is 6.

Answer:

g(x) is the image of f(x) after translated horizontally 2 units to the right

Step-by-step explanation:

∵ f(x) = √x

∵ g(x) = √(x - 2)

∴ The x-coordinate of f(x) becomes (x - 2)

∴ f(x) translated horizontally 2 units to the right

Find the ratio of the known sides.

6/4 = 1.5

The larger triangle is 1.5 times larger than the smaller one.

Area is in square units, so to find the area of the larger triangle square the ratio and multiply that by the area of the known triangle.

1.5^2 x 40 = 90 square cm.

Answer:

D

Step-by-step explanation:

the slope is 12/10 which simplifies to 6/5 and the y intercept is 2

Answer:

Option C. The cost of transporting an automobile for a charge of $1.00 per mile with a pick-up fee of $100

Step-by-step explanation:

we know that          

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]y/x=k[/tex] or [tex]y=kx[/tex]

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

verify each case

case A) The cost of purchasing candy bars at a price of $1.25 per candy bar.      

Let

y------> the cost

x----> the number of candy bars

The linear equation that represent the situation is

y=1.25x -------> represent a proportional relationship

case B) The number of cookies produced in a factory at a rate of 1,000 cookies per hour

Let

y------> the number of cookies

x----> the number of hours

The linear equation that represent the situation is

y=1,000x -------> represent a proportional relationship

case C) The cost of transporting an automobile for a charge of $1.00 per mile with a pick-up fee of $100

Let

y------> the cost

x----> the number of miles

The linear equation that represent the situation is

y=x+100 -------> not represent a proportional relationship

case D) The cost of a field trip to a museum for a group of high school students at a cost of $10.00 per student

Let

y------> the cost

x----> the number of students

The linear equation that represent the situation is

y=10x -------> represent a proportional relationship

Answer: The answer is B.

a yard = 3 feet, a foot =12 in, so 3 yardsx3 feet would be 9 feet, plus the 2 other feet, would be 11, times 12 inches, would be 132 inches.

Answer:

The correct answer is 3 yards 2 feet = 132 inches

Step-by-step explanation:

Points to remember

1 Yard = 3 foot

1 foot = 12 inches

It is given that,  3 yards 2 feet we have to convert it into inches.

To convert into inches

3 yards to feet

we have, 1 Yard = 3 foot

3 yards = 3 * 3 = 9 feet

3 yards 2 feet = 9 feet + 2 feet = 11 feet

11 feet to inches

1 foot = 12 inches

11 feet = 11 * 12 = 132 inches

Answer:

(-x+7) (-2x+5) are the factor of 2x²-19x+35=0

Answer:

292

Step-by-step explanation:

The block is a rectangle with 80 yd length and 66 yd width. We need the perimeter of the block, which is the perimeter of the rectangle.

P = 2L + 2W

P = 2(80 yd) + 2(66 yd)

P = 160 yd + 132 yd

P = 292 yd

To calculate the distance of one lap around Danny's rectangular block (66 yards wide and 80 yards long), we find the perimeter, which is 292 yards.

The question asks about finding the distance Danny must run when doing a lap around his block, which is shaped as a rectangle. To find the distance around a rectangular path, we calculate the perimeter. The formula for the perimeter of a rectangle is 2 * (length + width). Given that the block is 66 yards wide and 80 yards long, the perimeter is 2 *(66 + 80) yards.

First, we add the length and width: 66 + 80 = 146 yards. Then, we multiply by 2: 2 * 146 = 292 yards. Therefore, one lap around Danny's block is 292 yards.

Answer:

[tex]486\ toy\ boxes[/tex]

Step-by-step explanation:

we know that

[tex]1\ ft=12\ in[/tex]

step 1

Convert the dimensions of the boxes to feet

[tex]4\ in=4/12=(1/3)\ ft[/tex]

step 2

Find the volume of the toy boxes

[tex]V=b^{3}[/tex]

[tex]V=(1/3)^{3}=(1/27)\ ft^{3}[/tex]

step 3

Find the volume of the crate

[tex]V=LWH[/tex]

[tex]V=(3)(3)(2)=18\ ft^{3}[/tex]

step 4

Divide the volume of the crate by the volume of the toy boxes to find the number of toy boxes

[tex]\frac{18}{(1/27)}= 486\ toy\ boxes[/tex]

Answer:

Step-by-step explanation:

The first and the last of these functions are exponential functions.  Such functions can be recognized by the constant base and variable exponent found in each:  3^x, (5)^x, in this particular problem.

5x^2 is not an expo function because the base is not constant; this is called a power function.

the exponential function is f(x) = 3^x and 3(5)^x. Therefore, option a and d both are the correct answer.

The correct answers are f(x) = 3^x (choice A) and f(x) = 3(5) (choice D) for exponential functions, then it means you're considering a constant function (f(x) = 3(5)) as a simple form of an exponential function where the base is 3 and the exponent is 5.

This is a valid interpretation, but typically exponential functions are written as f(x) = a^x, where 'a' is a constant, and 'x' is the variable in the exponent.

In this case, if you're considering f(x) = 3(5) as an exponential function, it represents a specific case with a constant exponent.

So, both A and D can be considered as exponential functions depending on the context of the question.

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Answer:  The correct answer is -2,5/2 which is the last answer.

Step-by-step explanation:

* Hopefully the work below helps:)Mark me the brainliest:)!!

Answer:   [tex]\bold{\{-2, \dfrac{5}{2}\}}[/tex]

Step-by-step explanation:

2x² - x - 10 = 0

Replace -x with 4x - 5x and factor using Grouping Method:

2x² + 4x  -5x - 10   = 0

2x(x + 2)  -5(x + 2) = 0

(2x - 5) (x + 2) = 0

2x - 5 = 0   and    x + 2 = 0

2x = 5         and    x = -2

x = 5/2

Answer:

0.78

Step-by-step explanation:

"The probability that a family with 5 children will have at least 2 boys" is equivalent to the complement 1 - P(family will have 1 or 0 boys).

We can use a calculator with statistical functions built in to calculate this probability.  The function needed is for binomial probability:  binom(n, p, x).

P(family will have 1 or 0 boys) = binomcdf(5, 0.5, {0, 1} ) produces two results:  one the probab. of having 0 boys and one the probab. of having 1 boy:  0.03125 and 0.1875.  We add these together, obtaining 0.21875.

Then we subtract this result from 1 to obtain The probability that a family with 5 children will have at least 2 boys:  1 - 0.21875 = 0.78125, which may be reasonably rounded off to 0.78.

Answer:

81.3%.

Step-by-step explanation:

This is  Binomial probability.

Prob( Getting 1 boy) = 5C1 (1/2)^5

= 0.156

Prob ( Getting all girls = 5C5  (1/2)^5

= .031.

So Prob( at least 2 boys = 1 - (0.156 + 0.031)

= 0.813

= 81.3%.

Answer:

[tex]\frac{x}{4}-\frac{111}{4}\\x=2y+7[/tex]

I'm pretty sure this is correct!

Answer:

(- 97, - 52)

Step-by-step explanation:

given the 2 equations

x - 4y = 111 → (1)

2y - x = - 7 → (2)

Rearrange (1) expressing x in terms of y by adding 4y to both sides

x = 111 + 4y → (3)

Substitute x = 111 + 4y into (2)

2y - (111 + 4y ) = - 7 ← distribute and simplify left side

2y - 111 - 4y = - 7

- 2y - 111 = - 7 ( add 111 to both sides )

- 2y = 104 ( divide both sides by - 2 )

y = - 52

Substitute y = - 52 into (3) for corresponding value of x

x = 111 + 4(- 52) = 111 - 208 = -97

Solution is ( - 97, - 52 )

Answer:

Step-by-step explanation:

[tex](-4a^2)(2a^{-3})^{-4}\qquad\text{use}\ (xy)^n=x^ny^n\ \text{and}\ (x^n)^m=x^{nm}\\\\=(-4a^2)\bigg(2^{-4}a^{(-3)(-4)}\bigg)\qquad\text{use}\ 4=2^2\\\\=(-2^2a^2)(2^{-4}a^{12})\\\\=-(2^2)(2^{-4})(a^2a^{12})\qquad\text{use}\ x^nx^m=x^{n+m}\\\\=-2^{2+(-4)}a^{2+12}\\\\=-2^{-2}a^{14}\qquad\text{use}\ x^{-n}=\dfrac{1}{x^n}\\\\=-\dfrac{1}{2^2}a^{14}\\\\=-\dfrac{a^{14}}{4}[/tex]

there is no help!!!!!!!!!!!!!!!!!!!!!!!!!!!!

For this case we must resolve the following expression:

[tex]9 ^ {\sqrt {3}}[/tex]

We have to, by definition:

[tex]\sqrt {3} = 1.732050808[/tex]

So:

[tex]9 ^ {1.732050808} =[/tex]

Evaluating in a calculator we have to:

[tex]9 ^ {1.732050808} = 44.95691576[/tex]

Rounding the obtained expression:

[tex]9 ^ {\sqrt {3}} = 44.9569[/tex]

Answer:

Option C

Answer:

85

Step-by-step explanation:

15 times 6 is 90. This is how much money he spends on 6 DVDs if they're all $15. 90 subtracted by 5 (remember - he gets $5 off his entire purchase, not just each individual DVD) would be 85!

Answer:

B .22

Step-by-step explanation:

The number of people who are male and attended an action movie is 105

There were 479 people who attended

P(male and attended an action movie) = male and attended an action movie

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

                                                                       attended

P(male and attended an action movie)=105/479

                                                               =.219206681

Rounded to two decimal places

                                                               =.22