(j-1)(-3) I need help solving the distributive property.

Answer:

C)

Step-by-step explanation:

To find area, You use the equation (Length × Width). If you need to find the perimeter By using the Area, You need to Divide one of the Equal Sides, since it is a square you can use either length or width, So Since it is a square, You Can also use the Square Root method. Square root is basically Dividing the number by the number it was multiplied by.

EX:

9 × 9 = 81

because

81 ÷ 9 = 9

So, If both the Length and width are 9, You add them together to get eighteen. Though since it's a square, You Can't only Count The Half of the Shape, So you multiply that by two, Leaving you with 36

Answer: C) 36 ft

To solve this equation, we need to fin out how long each side is. To do this, find the square root of 81, since it is a perfect square.

[tex]\sqrt{81 ft} = 9 ft[/tex]

So now we know that each side is 9 feet, we need to find the perimeter of the square using these dimensions.

9 ft · 4 sides = 36 ft of fencing

Therefore, Ariel needs 36 ft of fencing for her garden.

For this case we have the following data:

Available quantity: $ 24

Regular price: r

Sale price:[tex]r-5[/tex]

If we have that Roopesh can not pay more than $ 24, we can write the following inequality, taking into account that the item is sold in [tex]r-5[/tex]:

[tex]r-5 \leq24[/tex]

Clearing r:

[tex]r \leq24+5\\r \leq29[/tex]

Answer:

[tex]r \leq29[/tex]

[tex]r-5[/tex]

The sale price decreases $ 5 and so the regular price is obtained.

Answer:

answer in pic

Answer:

x=-7

Step-by-step explanation:

If a line is parallel to the y-axis, then it is vertical because the y-axis is vertical.

A vertical line is in the form of x=a number.

Since the line we are looking for is 7 units to the left of the y-axis, then the line is x=-7.  -7 is 7 units left of 0.

7 units right would have been x=7.

Answer:

Step-by-step explanation:

A line parallel to y-axis is a vertical line.

A vertical line has an equation x = a, where a is any real number.

The line is 7 units to the left of the y-axis. Therefore  the equation of this line is x = -7 (look at the picture).

Lindsey purchased 72 coss.

Let's break down the problem:

1. Lindsey needs to buy exactly 2 pillets, and each pillet costs $1. So, she spends $2 on pillets.

2. She has $20 in total, and she spent $2 on pillets, leaving her with $20 - $2 = $18.

3. She spends the remaining $18 on coss, and 4 coss cost $1.

To find out how many coss she can buy with $18, we divide $18 by the cost of 4 coss:

$18 ÷ $1 = 18 coss × 4 coss/$1 = 72 coss

So, Lindsey purchases D. 72 coss with the remaining $18.

Complete Question:

0.5 pillets = 1 dollar

4 coss = 1 dollar

Lindsey has $20 to spend. She needs to buy exactly 2 pillets. She spends the remaining amount buying coss. How many coss does Lindsey purchase?

A. 4

В. 5

С. 64

D. 72

Answer: 84 inches, 7 feet tall.

Step-by-step explanation:

4 x 21 = 84 inches

84/12 = 7 feet ( there are 12 inches in 1 foot)

1 MILLIliter, namely one thousandth of a liter, meaning there are 1000 mLs in one liter.

the spoon holds 5 mL, how many are there in 1 liter? namely how many times is 5 in 1000?  simply 1000 ÷ 5 = 200.

The number of spoon that will hold 1 litre of liquid is 200 spoons.

Measurement is use to show the amount of something.

The small measuring spoon holds 5 millilitres . Therefore, the number of spoon that can hold 1 litres  can be calculated as follows;

Let's convert

1000 ml = 1 l

5 ml = 1 spoon

1000 ml = ?

number of spoon = 1000 / 5

number of spoon = 200

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Answer:

40

Step-by-step explanation:

There are 3 red bars

It states we have 24 red notebooks

24/3 = 8

Each bar represents 8 notebooks

We have 5 gold  bars

5*8 = 40

We have 40 gold notebooks

Answer:

40

Step-by-step explanation:

There are 5 gold books for every 3 red books.

You are trying to find the ratio of "x" gold books to 24 red books.

First, divide 24 with 3:

24/3 = 8

The questioner multiply 8 to the ratio's denominator. To solve completely, what you do to the denominator of the fraction, you must do to the numerator. Multiply:

5 x 8 = 40

40 gold notebooks is your answer, making the ratio 40 gold : 24 red.

~

Answer: A. 47

Step-by-step explanation: The answer would be 47 degrees because the 47 degree angle has one mark, and so does x and y. This means that these angles are the same.

Answer:

[tex]RS\ 8,748[/tex]

Step-by-step explanation:

we know that

The simple interest formula is equal to

[tex]A=P(1+rt)[/tex]

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

step 1

Find the rate of interest

in this problem we have

[tex]t=8\ years\\ P=RS\ 3,560\\ A=RS\ 4,272\\r=?[/tex]

substitute in the formula above

[tex]4,272=3,560(1+8r)[/tex]

solve for r

[tex]8r=(4,272/3,560)-1[/tex]

[tex]r=[(4,272/3,560)-1]/8[/tex]

[tex]r=0.025[/tex]

convert to percentage

[tex]r=0.025*100=2.5\%[/tex]

step 2

What will be the simple interest on Rs 6480 in 14 years at the same rate of interest?

we have

[tex]t=14\ years\\ P=RS\ 6,480\\ A=?\\r=0.025[/tex]

substitute in the formula above

[tex]A=6,480(1+0.025*14)[/tex]

[tex]A=6,480(1+0.35)[/tex]

[tex]A=RS\ 8,748[/tex]

Answer:

c = 6t + 19.60

Step-by-step explanation:

   Let t = the time in hours for which Beth rented the bike. Then  

       6t = the rental cost for the bike and

$19.60 = the up-front cost

The expression for the total cost (c) is

c = 6t + 19.60

The expression for the total cost is C = 19.60 + 6t. According to the given statements, time t is the variable term.

An expression is the combination of variables, coefficients, and constants. These are separated by operators like addition or subtraction. Each combination is called a term.

Given that,

Beth rented a bike from Julia's Bikes.

It cost $19.60 plus $6 per hour.

So, here the variable is time because as the time increases the cost also increases.

Consider time = t and the total cost = C

Then, the expression that represents the given statements is

C = 19.60 + 6t

∴ The expression is C = 19.60 + 6t.

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[tex]\bf 60z+50-97z=-37z+49\implies 50~~\begin{matrix} -37z \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~=~~\begin{matrix} -37z \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~+49\implies \stackrel{\textit{the what?!}}{50=49}[/tex]

well, clearly 50 ≠ 49.

but, whenever we get a result of this kind, is just a way to say no solutions.

you can look at it this way, is a system of equations, the equations are

y = -37z + 50

y = -37z + 49

now, notice, since both equations are in slope-intercept form, both equations have the same slope of -37, however, the y-intercept differs, meaning both equations are parallel and never touch each other.

since a solution for them is where they intercept and they never do, no solutions.

The given equation will have no solution.

An equation is a mathematical statement that shows that two mathematical expressions are equal.

Given is an equation,  60z+50-97z=-37z+49

On solving, we get,

0 = -1

Which is not possible.

Hence, There is no solution.  

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Answer:

D. y> 1

The shaded area on the graph is y>1 but since the line is solid it is also equal to 1.

Answer:

y ≥ 1

Step-by-step explanation:

The given line is a horizontal line.

The equation of a horizontal line is y = a, where "a" is a constant.

Here the horizontal drawn at y = 1.

Therefore, the equation of line is y = 1

The solution is shaded above the line, therefore, it is y > 1

The line is a solid, therefore, the inequality that represents the solution is y ≥ 1

Answer: D) y ≥ 1

Answer:

  area ≈ 24π

Step-by-step explanation:

We have solved this problem two ways:

__

Drawing

A drawing of the figure (below) can help you find the radius of circle O. It is about 4.89 inches, so the area of circle O is about ...

  area = πr^2 = π(4.89 in)^2 ≈ 23.9π ≈ 24π . . . .square inches

__

Formulas

There is an interesting relationship between the area of the triangle and the radius of the circumscribing circle:

  r = (abc)/(4A) . . . . . where a, b, c are the triangle side lengths, and A is the triangle area

Heron's formula can tell us the area of the triangle from the side lengths:

  A = √(s(s-a)(s-b)(s-c)) . . . . where s = (a+b+c)/2

For the given triangle with side lengths 4, 5, and 8 (inches), the area can be found as ...

  s = (4+5+8)/2 = 8.5

  A = √(8.5·4.5·3.5·0.5) = √66.9375 ≈ 8.1815 . . . square inches

Then the radius of the circle is ...

  r = (4·5·8)/(4·8.1815) = 4.889 . . . inches

The area of the circle is then ...

  Circle O area = πr^2 = π(4.889 in)^2 = 23.9π in^2

__

The closest answer choice is 3.14×22.

Answer: Answer should be 882.

Step-by-step explanation:

5% =0.05

840*0.05=42

840+42=882

We will have a total of 882 employees.

The percentage is defined as a ratio expressed as a fraction of 100.

For example, If Misha obtained a score of 67% on her exam, that corresponds to 67 out of 100. It is expressed as 67/100 in fractional form and as 67:100 in ratio form.

Last year at this time we had 840 employees.

Since that time our staff has increased by 5%.

We have to determine the employees will we have in total

The total employees = 840 + 5% of 840

The total employees = 840 + 0.05 × 840

The total employees = 840 + 42

The total employees = 882

Hence, there are 882 employees will we have in total.

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Answer:

The correct answer is A. Aimee's graph is correct because the ratio [tex]\frac{2}{3} :1[/tex] is equal to 2:3, which her graph shows in each point.

Step-by-step explanation:

We are given that Aimee noticed her plant grew 2/3 of an inch every week since it sprouted and a graph is drawn to show the plant growth.

We are to determine whether which of the given statements is correct.

The ratio [tex]\frac{2}{3} :1[/tex] is basically equal to 2:3. Therefore, the graph is correct as it shows the same ratio at each point.

For the points (6, 4) and (3, 2) = [tex]\frac{4-2}{6-3} =\frac{2}{3}[/tex]

Answer:

-7 + a = 37

Step-by-step explanation:

The value of 'a' is 44 and the equation for the statement "The sum of -7 and a is equal to 37" is -7 + a = 37

Let's start by writing the equation for the given statement:

-7 + a = 37

To find the value of 'a', we need to isolate 'a' on one side of the equation. We can do this by performing inverse operations. The inverse of subtracting 7 is adding 7. So, we will add 7 to both sides of the equation:

-7 + a + 7 = 37 + 7

On the left side, the -7 and +7 cancel out, leaving us with:

a = 44

Therefore, the value of 'a' that satisfies the given equation is 44.

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Answer:

[tex]\large\boxed{\sqrt{2^2}\cdot\sqrt{2^2}\cdot\sqrt2\cdot\sqrt5\cdot\sqrt7\cdot\sqrt{y^2}\cdot\sqrt{y}}\\\boxed{2\cdot2\cdot y\sqrt{2\cdot5\cdot7\cdot y}}\\\boxed{4y\sqrt{70y}}[/tex]

Step-by-step explanation:

[tex]\begin{array}{c|c}1120&2\\560&2\\280&2\\140&2\\70&2\\35&5\\7&7\\1\end{array}\\\\1,120=2\cdot2\cdot2\cdot2\cdot2\cdot5\cdot7=2^2\cdot2^2\cdot2^2\cdot2\cdot5\cdot7\\\\y^3=y\cdot y\cdot y=y^2\cdot y[/tex]

[tex]\sqrt{1,120y^3}=\sqrt{2^2\cdot2^2\cdot2\cdot5\cdot7\cdot y^2\cdot y}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\=\sqrt{2^2}\cdot\sqrt{2^2}\cdot\sqrt2\cdot\sqrt5\cdot\sqrt7\cdot\sqrt{y^2}\cdot\sqrt{y}\\\\\sqrt{1,120y^3}=\sqrt{2^2}\cdot\sqrt{2^2}\cdot\sqrt{y^2}\cdot\sqrt{2\cdot5\cdot7\cdot y}\qquad\text{use}\ \sqrt{a^2}=a\\\\=2\cdot2\cdot y\cdot\sqrt{2\cdot5\cdot7\cdot y}\\\\\sqrt{1,120y^3}=2\cdot2\cdot y\cdot\sqrt{2\cdot5\cdot7\cdot y}=4y\sqrt{70y}[/tex]

Answer:

The slope is 14/1, meaning you rise 14, then run 1. This is a steep slope.

Step-by-step explanation:

The slope equation is y=mx+b. The "m" in the equation is equal to the slope. In your case, 14 takes the place of the "m", making it the slope.

The slope of the equation y = 14x + 10 is 14, which means the line has a positive slope, indicating a rise of 14 units in y for each unit increase in x. The y-intercept of the line is 10.

The equation given is y = 14x + 10. To understand the slope of this linear equation, we can refer to the formula y = mx + b, where m represents the slope and b represents the y-intercept. In this case, the number 14 is the coefficient of x, which means the slope of the line is 14. This indicates that for each unit increase in x, the value of y will increase by 14 units. Therefore, the line represented by this equation has a positive slope, which tells us that as x increases, y also increases at a constant rate. The slope is important in many fields, including economics, as it measures the relationship between two variables.

The y-intercept is the point where the line crosses the y-axis, which occurs when x equals 0. In our equation, the y-intercept is 10, indicating that the line crosses the y-axis at the point (0, 10).

Answer:

x=7

y=-1

Step-by-step explanation:

When the two equations are solved together, they form simultaneous equations.

x+y=6

x-y=8

Let us use the elimination method. if we add the two equations, we eliminate y.

2x=14

x=7

Let us substitute for the value of x obtained above.

x-y=8

7-y=8

y=7-8

y=-1

Answer:

9

Step-by-step explanation:

hundreds   tens  ones  .  tenths  hundredths  thousandths  ten thousandths

9                   7       2      .    6               5                 8                       0

The 9 is in the hundreds place    

5a+8

Answer is NOT 5a+8

5(a+3) Multiply the bracket by 5

5(a)+5(3)

5a+15

Correct answer is supposed to be: 5a+15

Answer:

The correct answer options are,

A: 0

B: There is one real root with a multiplicity of 2.

Step-by-step explanation:

Discriminant of a quadratic equation ax² + bx + c = 0 is given by,

b² - 4ac

It is given a quadratic equation 9x² + 24x + 16 = 0

To find the discriminant

Here a = 9, b = 24 and c = 16

Discriminant = b² - 4ac

 = 24² - (4 * 9 * 16)

 = 576 - 576

 = 0

The correct options are

A: 0

B: There is one real root with a multiplicity of 2.

The discriminant of the quadratic equation 9x^2+24x+16=0 is 0, which means there is one real root with a multiplicity of 2.

Let's examine the quadratic equation 9x^2+24x+16=0 to find the discriminant and interpret its meaning for the roots of the equation.

A: The discriminant of a quadratic equation in the form ax^2+bx+c=0 is given by the formula b^2-4ac. Substituting the coefficients from our equation (where a=9, b=24, and c=16) into this formula gives us the discriminant:

discriminant = b^2 - 4ac = 24^2 - 4(9)(16) = 576 - 576 = 0.

B: The discriminant tells us about the nature of the roots of the quadratic equation. Since the discriminant is zero, this implies that there is one real root with a multiplicity of 2. Therefore, the quadratic equation has a perfect square factor and the graph of the equation touches the x-axis at one point, indicating that both roots are the same.

Answer:

(2x-7) units

Step-by-step explanation:

[tex]\tt length=\cfrac{area}{width}\\\\\\ length=\cfrac{24x^3-76x^2-28x}{12x^2+4x}=\cfrac{4x(6x^2-19x-7)}{4x(3x+1)}=\\\\\\=\cfrac{6x^2+2x-21x-7}{3x+1}=\cfrac{2x(3x+1)-7(3x+1)}{3x+1}=\\\\\\=\cfrac{(3x+1)(2x-7)}{3x+1}=2x-7[/tex]

The length of the rectangle can be found by dividing the area given as (24x³-76x²-28x) by the width given as (12x²+4x). This simplifies to 2x - 7 units which is the expression for the length of this rectangle.

In mathematics, to find the length of a rectangle when given the area and the width, you have to divide the area by the width. The area A is given as 24x³-76x²-28x square units, and the width w is given as (12x²+4x) units. Following the formula A = lw, where l is length and w is width, the length can be found by rearranging this formula to l = A/w.

Applying this to the given values: l = (24x³-76x²-28x) / (12x²+4x) simplifies to l = 2x - 7 units. Therefore, the expression for the length of the rectangle is 2x - 7 units.

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Answer:

Step-by-step explanation:

[tex]\begin{array}{c|c}x&f(x)\\-7&\boxed{-3}\\-3&5\\2&-4\\4&-8\end{array}[/tex]

From the table we have f(-7) = -3

Answer:

f(-7) = -3

Step-by-step explanation:

Answer:

Option A) y=1000(1.15)^6   2313 bacteria

Step-by-step explanation:

The initial value is 1,000 and the growth factor would be the the 15%.

15% can be rewritten to .15, but you have to have to add 1 for the start to make the equation easier. Thus making the growth factor 1.15

After multiplying 1000(1.15)^6 you will get 2313.06076562 which is simplified to 2,313 bacteria.

Hope this is helpful. :)

The population of the culture 6 days after inoculation is y = 1,000(1.15) 2,313 bacteria.

According to the given statement, a growth medium exists inoculated with 1,000 bacteria.

Bacteria grow at a rate of 15% = 0.15

Add 1 to create it easier = 0.15 + 1 = 1.15

We have to estimate the population of the culture 6 days after inoculation.

[tex]= 1000(1.15)^6[/tex]

= 1000(2.313)

= 2313 bacteria

The population of the culture 6 days after inoculation = 2313 bacteria

Therefore the correct answer is y = 1,000(1.15) 2,313 bacteria.

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Answer: 12

Step-by-step explanation: Multiply the chances of getting a marble, 4, and the chances of spinning the spinner, 3.

4 x 3 = 12

There are 12 outcomes.

Answer:12

Step-by-step explanation:

I did the test

Answer:

Step-by-step explanation:

Unit vector is a vector with mangnitue 1 and we can find out the magnitude of the vector [tex]u = (x , y)[/tex] with the following formula

[tex]magnitude = \sqrt{x^{2}+y^{2}}[/tex]

So in the given options whichever vector has magnitude 1 it will be a unit vector.

So if we put the values in the above mentioned formula

1.Magnitude of option A is not 1 so it is not a unit vector

2.Magnitude of option B is  1 so it is a unit vector

3.Magnitude of option C is  1 so it is a unit vector

4.Magnitude of option D is not 1 so it is not a unit vector

A unit vector is of length 1 and is used to represent the positive direction on an axis in a Cartesian system. In mathematics, the i, j, and k unit vectors denote the positive directions on the X, Y, and Z axes, respectively. The magnitudes of all unit vectors are one, and they are crucial in representing directions in space.

In mathematics, a unit vector is a vector of length 1. The unit vectors in a Cartesian system are typically denoted as i, j, and k. Unit vector i signifies the positive direction on the X-axis, while unit vector j represents the positive direction on the Y-axis. In three-dimensional space, unit vector k denotes the positive direction on the Z-axis.

For example, Consider any vector A in a Cartesian coordinate system (figure 2.16). The scalar x-component of vector A is its dot product with the unit vector i, while the scalar y-component of that vector is its dot product with the unit vector j. This approach effectively expresses A in terms of the unit vectors of the axes. By their very definition, these unit vectors are dimensionless, such as their direction allows precise representations of vectors in space.

In summary, unit vectors essentially establish the directions for the system of coordinates in question. These vectors assist in expressing the direction of physical entities, such as the projection of vector A onto the x-axis or the y-axis. The magnitudes of these unit vectors are always one, so their principal significance comes from the directions they represent.

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[tex]\bf \textit{Product to Sum Identities} \\\\ sin(\alpha)sin(\beta)=\cfrac{1}{2}[cos(\alpha-\beta)\quad -\quad cos(\alpha+\beta)]\qquad \leftarrow \textit{we'll use this one} \\\\\\ cos(\alpha)cos(\beta)=\cfrac{1}{2}[cos(\alpha-\beta)\quad +\quad cos(\alpha+\beta)] \\\\\\ sin(\alpha)cos(\beta)=\cfrac{1}{2}[sin(\alpha+\beta)\quad +\quad sin(\alpha-\beta)][/tex]

[tex]\bf cos(\alpha)sin(\beta)=\cfrac{1}{2}[sin(\alpha+\beta)\quad -\quad sin(\alpha-\beta)] \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ sin(5x)sin(3x)\implies \cfrac{cos(5x-3x)-cos(5x+3x)}{2}\implies \cfrac{cos(2x)-cos(8x)}{2}[/tex]

Answer:[tex] \frac{1}{2}\left ( cos\left ( 2x\right )-cos\left ( 8x\right )\right )[/tex]

Step-by-step explanation:

Solution

[tex]Sin\left ( 5x\right )Sin\left ( 3x\right )[/tex]

We know

[tex] 2sin\left ( a\right )sin\left ( b\right )=cos\left ( a-b\right )-cos\left ( a+b\right ) [/tex]

Applying formula

[tex]Sin\left ( 5x\right )Sin\left ( 3x\right )=\frac{1}{2}\left ( cos\left ( 5x-3x\right )-cos\left ( 5x+3x\right )\right )[/tex]

=[tex] \frac{1}{2}\left ( cos\left ( 2x\right )-cos\left ( 8x\right )\right ) [/tex]