Help please
Multiply.
-2w(-5-w)

×

Answer:

[tex]\left[\begin{array}{cc}x&y\\1&5\\2&7\\3&9\end{array}\right][/tex]

Step-by-step explanation:

Note that f(x) is typically used in replacement of y. So in reality, to make the question simple to understand, we will replace f(x) with y.

y = 2x + 3

Remember to follow PEMDAS. PEMDAS is the order of operations, and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

~

You are finding a table of value, which results in something similar to:

[tex]\left[\begin{array}{cc}x&y\\1&5\\2&7\\3&9\end{array}\right][/tex]

Proof 1:

Plug in 1 for x in the given equation:

y = 2x + 3

y = 2(1) + 3

y = 2 + 3

y = 5

Proof 2:

Plug in 2 for x in the given equation:

y = 2x + 3

y = 2(2) + 3

y = 4 + 3

y = 7

Proof 3:

Plug in 3 for x in the given equation:

y = 2(3) + 3

y = 6 + 3

y = 9

~

Do this for as much values as you need.

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Matrix multiplication, also known as matrix product and the multiplication of two matrices, produces a single matrix. It is a type of binary operation. If A and B are the two matrices, then the product of the two matrices A and B are denoted by: X = AB.

The multiplication is done by adding the elements obtained by multiplying each element of the lines of the first matrix times the elements of the columns of the second matrix (Line× Column).

[tex]A=\left[\begin{array}{ccc}1&2\\\end{array}\right] _{1*2} \\B= \left[\begin{array}{ccc}4&5&6\\7&8&9\end{array}\right] _{2*3}[/tex]

2=2 yes it is possible to multiply

1*3= order of the resulting matrix

(line*column)

[tex]A*B=\left[\begin{array}{ccc}4+14&5+16&6+18\\\end{array}\right] _{1*3}[/tex]

[tex]A*B=\left[\begin{array}{ccc}18&21&24\\\end{array}\right] _{1*3}[/tex]

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The value of p in the equation is as follows:

The subject of a formula is the variable which is expressed in terms of the other variables.

In other words, the subject of the formula is the variable which is on the left hand side of the formula.

Therefore, let's make p the subject of the formula in the equation xp - rx = ah.

xp - rx = ah

add rx to both sides of the equation

xp - rx = ah

xp - rx  + rx = ah + rx

xp = ah + rx

divide both sides by x

xp = ah + rx

xp / x = ah / x + rx / x

Therefore, the value of p = ah / x + r

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The height of the pole will be 3m (approx.)

We have the ground located 4 m from a pole, its upper part can be seen with an elevation angle of 37°.

We can write the height of the pole as -

h = 4 tan(37°)

h = 4 x 0.75

h = 3 m (approx.)

Therefore, the height of the pole will be 3m (approx.)

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[Question in english -

From a point on the ground located 4m from a pole, its upper part can be seen with an elevation angle of 37°. What is the height of the pole?]

Answer:

=x^2-2x+3x-6

=x(x-2)+3(x-2)

=(x-2) (x+3)

The system of equations that can be used to determine the sale price of the sets of strings, the guitars, and the amps.

3x + 2y + 2z = 472

2x + y = 212

4x + y = 322

The cost of each amp is $51.

An equation is a mathematical statement made up of two expressions connected by an equal sign.

We have,

3x + 2y + 2z = 472 ____(1)

2x + y = 212 ____(2)

4x + y = 322 ____(3)

From (2) and (3) we get,

Multiply 2 on (2).

4x + 2y = 424

4x + y = 322

(-)    (-)   (-)

       y = 102

Now,

2x + y = 212

2x = 212 - y

2x = 212 - 102

x = 110/2

x = 55

Now,

x = 55

y = 102

From (1) we get,

3x + 2y + 2z = 472

3 x 55 + 2 x 102 + 2z = 471

165 + 204 + 2z = 471

2z = 102

z = 51

Thus,

The system of equations that can be used to determine the sale price:

3x + 2y + 2z = 472

2x + y = 212

4x + y = 322

The cost of each amp is $51.

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answer

x=-10

x=0

Step-by-step explanation:

x(x+10) =0

apply zero product property

sorry if this is a straight forward answer

Answer:

The first solution is -10 and the second solution is 0

Step-by-step explanation:

The question is x * (x+10) = 0

When the product of factors equals 0, at least one factor is 0:

x = 0

x+10 = 0 which can be simplified to x = -10 by subtracting 10 from both sides. Thus, the two solutions to x * (x+10) = 0 is -10 and 0.

Answer:

Step-by-step explanation:

Given,

[tex]P = $400 find I\\R = 9%\\\\T = 0.25 years[/tex]

[tex]T=0.25[/tex](Remember 9% = .09 in decimal form)

So We convert it into a decimal form

[tex]\frac{9}{100} =0.09[/tex]

Now we find the Interest,

[tex]I=PRT\\[/tex][tex]I = 400X0.09X0.25\\I=36X0.25\\I=9$[/tex]

9$ is the answer

As per the volume of cylinder, the value of k is 3.06 centimeters.

Volume of cylinder:

According to geometry, the volume of a cylinder is defined as the capacity of the cylinder, which helps to find the amount of material that the cylinder can hold.

Given,

Here the glass pictured to the left can hold a maximum volume of 473 cubic centimeters, which is approximately 16 fluid ounces.

Here we need to find the value of k, in centimeters.

While we looking into the given question we have identified that the value of the following,

Volume of the glass = 473 cubic centimeter

Height of the glass = 16 fluid ounces.

Radius of the glass = k

Then the value of k is calculated by using the volume of cylinder formula,

=> V = πr²h

Here we have to apply the values on the formula, then we get,

=> 473 = π x k² x 16

Apply the value of π = 3.14,

=> 473 = 3.14 x k² x 16

=> k² = 9.41

=> k = 3.06

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Answer: 68.75

Step-by-step explanation:

25 percent equals 0.25

Multiply the decimal by the number to find the percent

0.25*275= 68.75

Answer: 68.75

Step-by-step explanation:

25%/100% = 0.25

275 times 0.25 = 68.75

Answer:

4

Step-by-step explanation:

Answer:

6 7/12

Step-by-step explanation:

"12 1/4 - 5 2/3" is an expression.  It is not said to equal anything.  The "=" sign makes it an equation.  But we can evalute an expression by simplyfying it.  Let's do the subtraction.  We first need to convert one of the fractions so that it has the same denominator as the other.

12 1/4 - 5 2/3 can be written as (12 - 5)+(1/4 - 2/3)

(12 - 5)+(1/4 - 2/3)

(7)+(1/4 - 2/3)        Let's convert both fractions to have denominators of 12 [since 4*3 = 12]

7 + 1/4 - 2/3

7 + (1/4)*(3/3) - (2/3)*(4/4)   [Multiply the tqo fractions by (3/3) and (4/4), repectively.  This is OK since both are the equivalent of multiply by 1.  But it converts the denominators so that we can now add or subtract.

7 + (3/12) - (8/12)

7 - (5/12)

or 6 7/12

Answer:

$7.26 with out tax

Step-by-step explanation:

If beans cost $1.65 per pound and Josh bought $.4 pounds, the you multiply 4.4 * 1.65= 7.26 then you add a $ at the begining

Answer:

Josh payed $7.26 for the green beans.

Step-by-step explanation:

⭐What does "per pound" mean in the context of this problem?

In this problem, we are given the ratio of cost  to pounds.

⭐What is a ratio?

If we want to find how much it costs for Josh to purchase 4.4 pounds of green beans, we need to create a proportion.

⭐What is a proportion?

First, let's create 2 ratios. Let x= the cost for 4.4 pounds:

[tex]\frac{1.65}{1 pound}[/tex] . . . (1)

[tex]\frac{x}{4.4 pounds}[/tex] . . . (2)

Next, set these ratios equal to each other to create a proportion. Make sure the same units stay in the numerator or denominator:

[tex]\frac{1.65}{1 pound} = \frac{x}{4.4 pounds}[/tex]

Then, multiply the LHS and RHS by 4.4 pounds to isolate the "x" variable:

[tex]\frac{1.65}{1 pound} (4.4) = \frac{x}{4.4}(4.4)[/tex]

[tex]\frac{7.26}{1} = x[/tex]

∴ It costs Josh $7.26 for 4.4 pounds of green beans.

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The equation is shown in the graph as (C) g(x) = (1/7)^x - 4.

A relationship between two terms on either side of an equal sign is described by a straightforward equation.

Additionally, addition, basic arithmetic, multiplication, and division are one or more of the four arithmetic calculations that simple equations undertake.

The system of equations can be expressed in three different ways: in point-slope form, standard form, and slope-intercept form.

So, the parent function is therefore known to be:

f(x) = (1/7)^x

Observe that the y-intercept results from evaluating this in zero:

f(0) = (1/7)^0 = 1

The graph's y-intercept is located at y = -3.

As a result, the function was translated downward by 4 units, bringing it to a point 4 units below the y-intercept of the parent function.

Thus, the graphed function is as follows:

g(x) = f(x) - 4

g(x) = (1/7)^x - 4

Therefore, the equation is shown in the graph as (C) g(x) = (1/7)^x - 4.

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Complete question:
What is the equation of the function shown in the graph, given that the equation of the parent function is f(x)=(1/7)^x ?

A. g(x)=(1/7)^x−3

B. g(x)=(1/7)^x−2

C. g(x)=(1/7)^x−4

D. g(x)=(1/7)^x+3

Answer:

The answer is B(3, -1)

Step-by-step explanation:
I did this before.

The completed statement obtained using the proportional relationship between the recipes and the number of bags of snack mix made are presented as follows;'

A proportional relationship is one in which the output variable is a constant multiple of the input variable.

The possible recipe to make 6 bags of snacks obtained froma similar question is presented as follows;

3 cups of granola

1 cup of raisins

1.5 cup of almonds

0.5 cup of cranberries

0.75 cup of chocolate chips

The evaluation of the possible statements in the question that requires completion using proportional relationships of the recipe, are presented as follows;

1. To make 18 bags of snack mix, Sherry needs ___ cups of almonds

18 = 3 × 6

Therefore, the amount ingredients required to make 18 bags of the snack mix is 3 times the amount of ingredients in the recipe, which indicates;

The number of cups of almonds Sherry needs = 3 × 1.5 = 4.5

2. Sherry needs 6 cups of granola to make ___ bags of the snacks

The number of granola required for 6 bags = 3 cups

6 = 2 × 3

The number of bags of the snack mix 6 cups of granola can make is twice the number made by 3 cups, of granola or 2 × 6 = 12 bags of snack mix.

3. If Sherry uses 1 cup of cranberries, she will need to use ___ cups of resins

The number of cups of cranberries in the recipe = 0.5 cups

Number of cups of resins in the recipe = 1 cup of resin

Therefore, 1 cup of resin is required for 0.5 cups of cranberries

2 × 1 = 2 cups of resins will be required for 2 × 0.5 = 1 cup of cranberries

4. The recipe will make ___ bags of snack mix if Sherry  uses only 1 cup of granola

3 cups of granola are required for 6 bags of snack mix

Therefore; 3/3 = 1 cup of granola will be required for 6/3 = 2 bags of the snack mix

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Using Percentage concept, Kareem had $7939 at the end of last year

Percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.

In this problem, we could attempt to use reverse of simple interest formula, however, we can directly find 6.6% of 8500 and subtract it from the principal.

This is calculated as;

6.6/100 = x / 8500

0.066 = x / 8500

x = 8500 * 0.06

x = 561

The investment decreased by $561

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Therefore the solution to this problem is the test statistic for the test  is  -0.487

What is test statistics ?

In statistical hypothesis testing, a test statistic is a statistic that is employed. A hypothesis test is often defined in terms of a test statistic, which is a numerical summary of a data set that can be used to execute the test and reduces the data to one value.

Here,

According to a report on the evening news show, burglaries occurred in 23 out of 197 residences without pets and 10 out of 129 homes with pets.

Let p1 represent the percentage of dog-owning homes who experienced burglaries.

p2 is the population proportion of burglarized homes without canine companions.

Since both population proportions are equal, the null hypothesis (H) is that p1=p2.

A Different Hypothesis, K:p1≠p2 indicates that there is an imbalance between the two population proportions.

The test results that would be utilized in this z-test for proportions with two samples;

                          T.S. = [tex]\frac{(p1^{'} -p2^{'} )-(p1-p2)}{\sqrt{\frac{p1^{'}1-p1^{'}()}{n1} +\frac{p2^{'}(1-p2^{'})}{n2} } }[/tex]~ N(0,1)

where,  p1= sample proportion of households with pet dogs who were burglarized =10/105  = 0.095

p2= sample proportion of households without pet dogs who were burglarized = 24/212 = 0.11

n1= sample of households with pet dogs = 105

n2 = sample of households without pet dogs = 212

So, the test statistics  =  [tex]\frac{(0.0095 -0.11 )-(0)}{\sqrt{\frac{0.095(1-0.095)}{105} +\frac{0.11(1-0.11)}{212} } }[/tex]

                                                                      =  -0.487

Therefore  ,the test statistic for the test is  -0.487

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We know that (D) 3xy is the factor of the given equation (x+y)³-(x³+y³) using the algebraic identity.

An identity element, also known as a neutral element, in a binary operation on a set is a set element that, when the operation is applied, leaves each element of the set untouched.

In algebraic structures like groups and rings, this idea is applied.

The left side of the equation equals the right side of the equation in an algebraic identity.

As an illustration, (a+b)2 = a2+2ab+b2 is true for all values of and b.

So, we have the equation:

(x + y)³ - (x³ + y³)

Now, get factors as follows:
Use the algebraic identity: (a + b)³ = a³ + b³ + 3ab (a + b)

x³ + y³ + 3xy (x + y) - x³ - y³

Simplify one more step to obtain:
3xy (x + y)

Therefore, we know that (D) 3xy is the factor of the given equation (x+y)³-(x³+y³) using the algebraic identity.

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Correct question:

Which of the following is a factor of (x + y)3 - (x3 + y3 )

a. x² + y² + 2xy

b. x² + y² - xy

c. xy²

d. 3xy

The  distance between the shortstop and the pitcher calculated as per the given data is 63.6.

Distance between two consecutive bases = 90 feet

Halfway distance between them will be = 45 feets

therefore, halfway distance between first base and second base = 45 feet

and that between second base and third base = 45 feet

So the distance between the  shortstop and the pitcher using pythagoras theorem

= >SP² = PQ² + QS²

           = 45²  + 45²

            =4050

SP = 63.6

Therefore , the required distance is 63.36feets.

The Pythagorean Theorem, often known as Pythagoras Theorem, is a crucial concept in mathematics that describes how the sides of a right-angled triangle relate to one another. Pythagorean triples are another name for the sides of the right triangle

In essence, the Pythagorean theorem is used to determine a triangle's angle and length of an unknown side. We can derive the base, perpendicular, and hypotenuse formulas using this theorem.

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Answer:

7

Step-by-step explanation:

Experimental probability is based on the actual results of an experiment (gathered by experimenting repeatedly).  

It is calculated by dividing the recorded number of times an event happens by the total number of trials in the actual experiment:

[tex]\boxed{\textsf{Experimental Probability} = \dfrac{\textsf{Number of times an event happens}}{\textsf{Total number of trials}}}[/tex]

As the number of trials increases, we would expect for the experimental probability to get closer to the theoretical probability.

Given:

The experimental probability of drawing a short straw is:

[tex]\implies \sf P(short\;straw)=\dfrac{35}{50}=\dfrac{7}{10}[/tex]

If Laura conducts 10 further trials of the experiment, based on the results in the table, the number of additional trials that will have a result of a short straw being drawn is:

[tex]\begin{aligned}\implies \textsf{Additional trials (short straw)} &=\sf experimental\;probability \times number\;of\;trials\\&= \sf \dfrac{7}{10} \times 10\\&= \sf 7\end{aligned}[/tex]

The question asks for the multiplicative rate of change which has a formula:[ f(x2) / f(x1) ] / (x2 - x1). The answer is 2.

If we want to find the multiplication. Tive rate of change of a function, that just means we need to divide one item by the one that comes before it to find out how much it multiplies Given one change in acts.

A ratio is a divisional comparison of two numbers by dividing the second output by the first one and using the first two outputs, -1/8 and -1/4, we can determine the ratio:

-1/4 ÷ -1/8

When dividing fractions, we multiply by the reciprocal:

-1/4 × -8/1

To multiply fractions, multiply straight across:

(-×-8)/(4×1) = 8/4 = 2.

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Answer:  D

Step-by-step explanation:

Answer: D

Step-by-step explanation:

We are trying to find out how this situation leads to 30 miles for d.

We know he has 14 miles to the gas station, and he has gone an unknown amount in 2 hours, t.

30=Xt+14

Solving for X: 30=X(2)+14

X=8

There are 150 different ways can 30 books be placed on these shelves if the books are all different.

The number of shelves on a bookshelf is 5.

The number of books on one shelf is 30.

The number of books on 5 shelves= The number of books on one shelf *The number of shelves.

which implies that, the total number of books =30*5

By multiplying 30 by 5 we get 150

total number of books =150.

hence, bookshelves have 150 books if books are placed differently.

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David's speed in still water 2 mile per hour , using downstream and upstream concept in river .

What is downstream and upstream in river?

Downstream : Towards the river where flow ends

In this river speed get added in rowing boat speed.

Upstream : Opposite to the flow of river

In this river speed gets subtracted from rowing boat speed.

In given que , one time boat is rowed by David in upstream and got back to original place i.e. case of downstream.

Speed of river = 1mile per hour

Let speed of David = x mile per hour.

Total time taken = 4 hour

As we know time = total distance / speed

Total distance covered by David = 3+3 = 6 miles

In upstream speed = x-1

In downstream speed = x+1

So, time = 3/(x-1 )+ 3/(x+1)

            4/3 = 1/x-1  + 1/x+1

Solving this we get,

2x^2 - 3x - 2 = 0

Solution for this eq will be

x  = 2, -1/2

But speed can't be negative.

So, x= 2mile per hour.

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There are some disadvantages to using this type of data collection is:

"Information available from the question"

In the question:

After gathering data on the effectiveness of company meetings, you decide to conduct a survey to obtain measurable qualitative and quantitative feedback. you will mail a survey to several companies.

To write the disadvantages to using this type of data collection.

Now, According to the question:

There are some disadvantages to using this type of data collection is:

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Answer: Linear

Step-by-step explanation:

Answer:

0.53

Step-by-step explanation:

0.6 because you divide 9 and 17