The area of a rectangle is 229.2 m2. If the length is 15 m, what is the perimeter of the rectangle

Answers

Answer 1

Answer:

[tex]\large\boxed{P=60.56\ m}[/tex]

Step-by-step explanation:

The formula of an area of a rectangle:

[tex]A=lw[/tex]

l - length

w - width

We have

[tex]A=229.2\ m^2\\\l=15\ m[/tex]

Substitute:

[tex]15w=229.2[/tex]          divide both sides by 15

[tex]w=15.28\ m[/tex]

The formula of a perimeter of a rectangle:

[tex]P=2(l+w)[/tex]

Substitute:

[tex]P=2(15+15.28)=2(30.28)=60.56\ m[/tex]


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Which of the following is a statistical question?
A.
How many chairs are there per class?
B.
How many sides does a triangle have?
C.
How old is Stella's mother?
D.
Did Jason finish his homework today?

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i believe it could be A. statistics is basically a collection of data, organizations, or an analysis. Im sorry if that is incorrect

Ben says 7 9/100 must be less than 7. 2/10 because 9 hundredths is less than 2 tenths. Do you agree? Draw a line to support your answer

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Yes, I cannot draw a line because this is online. Sorry

You plan to invest $350 $350 in a growth fund that has a rate of 1.5% 1.5% compounded quarterly. How much money will this investment be worth after 50 50 years? Round to the nearest cent.

Answers

Is this a scatterproblem?

If so then 350×((1.5)^4)^50 would be an answer?

Answer:

the answer is 739.91

Step-by-step explanation:

i put this problem for my question and got it right on the test.

good luck!

A used motorcycle is on sale for $3,600. Erik makes an offer equal to 3/4 of this price. How much does Erik offer for the motorcycle?

Answers

2,700 I'm pretty sure.

what is the correct first step to solve this system of equations. 4x-3y=-10, 2x+3y=4

a) add the 2 equations together
b) subtract the 2 equations
c) multiply the second equation by 3
D) divide the first equation by 4

Answers

Answer:

best bet is c

The correct first step is : " add the 2 equations together "

What is Equation?

An equation is a mathematical statement with an '=' symbol between two expressions that have equal values.

Here, given equations are

  4x - 3y = -10

  2x + 3y = 4

In given equation the coefficient of y is equal with opposite sign, so for simplification of these equation we need to add these equation.

Thus, the correct first step is : " add the 2 equations together "

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What is an IQR? Help Please!

Answers

Answer:

in math it should be Interquartile Range

Step-by-step explanation:

Answer:

Interquartile range

Step-by-step explanation:

In descriptive statistics, the interquartile range, also called the midspread or middle 50%, or technically H-spread, is a measure of statistical dispersion, being equal to the difference between 75th and 25th percentiles, or between upper and lower quartiles, IQR = Q₃ − Q₁.

Use the quadratic model y=-4x^2-3x+4 to predict y if x equals 5.

Answers

Answer:

y = - 111

Step-by-step explanation:

Substitute x = 5 into the quadratic for y

y = - 4(5)² - 3(5) + 4 = - 100 - 15 + 4 = - 111

What is the surface area of the regular pyramid?

Answers

You would have to do 18x2 then 14x2.

Answer:

Step-by-step explanation:

Surface area = [tex]lw+l\sqrt{(\frac{w}{2})^2+h^2}+w\sqrt{(\frac{l}{2})^2+h^2}[/tex]

just put the values in the formula h=18,w=14,l=14

- Could I have an explanation along side the answer please?-
What is the answer to :
- 1 5/12 - 7/12

Answers

“Same signs add and keep”

Negative minus negative you add them and keep the negative sign

-1 12/12

12/12= 1

=-2

Or make it into an improper fraction -1 5/12 is also -17/12

17+7= 24

-24/12 = -2

Answer:

-2

Step-by-step explanation:

You need to understand two things about this subtraction. One thing is subtracting from a negative number. The other thing is doing an operation with mixed numerals.

Let's start with subtracting from a negative number.

To subtract, you add the opposite (also called the additive inverse). For example, 4 - 2 is the same as 4 + (-2). In other words, to subtract 2 from 4, you add the opposite of 2 to 4. Now you need to rules of addition of signed numbers.

Let's look at your problem.

-1 5/12 - 7/12

You are subtracting 7/12 from the negative mixed numeral -1 5/12.

Change the subtraction into an addition of the reciprocal. The opposite of 7/12 is -7/12, so to subtract 7/12, you add -7/12.

-1 5/12 - 7/12 =

= -1 5/12 + (-7/12)

Now you are adding two negative numbers.

To add two negative numbers, add their absolute values (meaning ignore the negative signs, just add the numbers), and then the answer is negative.

You need to add

1 5/12 + 7/12

Add the fractional parts: 5/12 + 7/12 = 12/12 = 1

1 5/12 + 7/12 = 1 + 12/12 = 1 + 1 = 2

Now that we added the absolute values, and we have a sum of 2, the final answer for the original problem is -2 since we were adding two negative numbers.

Please help we with all

Answers

Step-by-step explanation:

[tex]1)\ \dfrac{10}{100}=0.10=0.1\\\\2)\ \dfrac{5}{10}=0.5\\\\3)\ \dfrac{6}{10}=0.6\\\\4)\ \dfrac{93}{100}=0.93\\\\5)\ \dfrac{1}{10}=0.1\\\\6)\ \dfrac{40}{100}=0.40=0.4\\\\7)\ \dfrac{56}{100}=0.56\\\\8)\ \dfrac{7}{10}=0.7\\\\9)\ \dfrac{3}{10}=0.3\\\\10)\ \dfrac{98}{100}=0.98\\\\11)\ \dfrac{4}{10}=0.4\\\\12)\ \dfrac{78}{100}=0.78[/tex]

Find the solution to the systems:
x+y=1 and 3y=−3x+3

Answers

Answer: infinitely many solutions

Step-by-step explanation:

First we want to arrange the linear equations such that its in the form

y = ax + b

For the first equation we subtract x from both sides to get:

y= -x + 1

For the second equation we divide by 3 to get:

y = -x + 1

These two equations are the same line so there are infinitely many solutions

The given system of equations have infinitely many solutions.

What is solution of a system of equations?

A solution of a system of equations is a list of numbers i.e. the value of variables that make all the of the equations true simultaneously.

What is slope intercept form of a line?

The slope intercept form of the line is y = mx + b, where m is the slope and b is y intercept.

When the two lines coincide to each other?

If there is no intercept difference between them ( intercept of two lines or system of equations) , then the line coincide to each other.

What is system of  linear equations?

A system of linear equations is a set of equations which are satisfied by the same set of variables.

What is the solution to the system of linear equation?

The solution to a system of linear equation is the point at which the lines representing the linear equation intersect.

A system of linear equations has no solution when the lines are parallel to each other.A system of linear equations has infinitely many solution, when the lines coincide to each other.A system of linear equations has one solutions when the line intersect at a point.

According to the given question

We have , a system of equations

[tex]x + y = 1[/tex]

⇒[tex]y = -x+1..(i)[/tex]

and

[tex]3y = -3x + 3[/tex]

⇒[tex]y = -x + 1..(ii)[/tex]

From equation (i) and (ii) we can see that there is no any intercept difference for the given system of equation. They have same slope and same intercept.

Therefore, the given system of linear equations coincide to each other, so they have infinitely many solutions.

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Z varies inversely with x and directly with y. When x=6 and y=2 z=5 what is the value of a when x=4 and y=9

Answers

Answer:

        15·9

z = --------- = 135/4

         4

Step-by-step explanation:

The general formula here is as follows:

        ky

z = ---------

         x

We must find the value of the constant of proportionality.  To do this, subst. 6 for x, 2 for y and 5 for z and compute k:

        k·2

5 = ---------

         6

Multiplying both sides by 6 results in 30 = 2k.

Thus, k = 30/2, or k = 15.

Our formula becomes:

        15y

z = ---------

         x

if x = 4 and y = 9, we get:

        15·9

z = --------- = 135/4

         4

Answer:

[tex]z=33.75[/tex]

Step-by-step explanation:

We are given that z varies inversely with x and directly with y when x=6 and y=2 then z=5

We have to find the value of z when x=4 and y=9

According to question

[tex]z\propto\frac{1}{x}[/tex]

and [tex]z\proptoy[/tex]

Therefore, we have [tex]z\propto\frac{y}{x}[/tex]

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

k=proportionality constant

Substitute x=6 , y=2 and z=5 then we get

[tex]5=k\times \frac{2}{6}[/tex]

[tex]5=\frac{k}{3}[/tex]

[tex]k=5\times3[/tex]

By division  poperty of equality

k=15

Now, substitute the value x=4,y=9 and k=15 then the value of z

[tex]z=15\times \frac{9}{4}[/tex]

[tex]z=\frac{135}{4}[/tex]

[tex]z==33.75[/tex]

Whats the square of a negative number?

Answers

Answer:

A negative number squared is a positive number. Squaring is multiplying a number by its self.

Step-by-step explanation:

X^2 = x * x

Squaring something is just multiplying it by its self.

A negative times a negative = a positive

A positive times a positive = a positive

A negative times a positive = a negative

A positive times a negative = a negative

- * - = +

+ * + = +

- * + = -

+ * - = -

Here is how my 6th grade teacher helped me to remember it:

If something bad (-) happens to a bad guy (-), that is good.

If something good (+) happens to a good guy (+), that is good.

If something bad (-) happens to a good guy (+), that is bad.

If something good (+) happens to a bad guy (-), that is bad.

I hope I helped!

Let me know if you need anything else!

~ Zoe

Final answer:

Squaring a negative number in mathematics always results in a positive number due to the rule that the product of two negative numbers is positive. Complex numbers introduce the concept of imaginary units, allowing for square roots of negative numbers like the square roots of -1, which are i and -i.

Explanation:

Understanding the Square of a Negative Number

When you square a negative number, the result is positive. This is because according to the rules of multiplication, the product of two negative numbers is positive. For example, the square of -4 is (-4) x (-4), which equals 16. Hence, squaring a negative number always yields a positive result.

Complex Numbers and the Imaginary Unit

In mathematics, we also encounter situations where we need to consider the square of a number that is not positive. This is particularly relevant in the field of complex numbers. Complex numbers include the imaginary unit i, which is defined such that i² = -1. Complex numbers allow for the square roots of negative numbers to exist; for instance, the square roots of -1 are i and -i.

The Significance of the Square of a Negative Number

The concept of squaring a negative number and the resultant positive number is utilized in various branches of mathematics and physics. For instance, in spacetime geometry applied in physics, squaring a negative number can relate to intervals or measurements that factor into theories of relativity.

The formula for calculating annual insurance premiums is _____.

Answers

Final answer:

The formula for calculating annual insurance premiums is based on several factors, including historical data, statistical analysis, and risk assessment.

Explanation:

The formula for calculating annual insurance premiums is based on several factors. Insurance companies use a combination of historical data, statistical analysis, and risk assessment to determine the premium amount. The general formula for calculating insurance premiums is:

Premium = (Average Person's Claims + Costs of Running the Company + Firm's Profits) / Number of Insured Individuals

For example, if there are 100 drivers and the insurance company needs to collect $186,000 to cover the costs of accidents, each driver would pay a premium of $1,860 per year.

The formula for calculating annual insurance premiums is Annual Premium = Base Rate [tex]\times[/tex] Coverage Amount [tex]\times[/tex] Adjustment Factors.

The formula for calculating annual insurance premiums is not a one-size-fits-all equation because it depends on various factors such as the type of insurance, the coverage amount, the deductible, the policyholder's risk profile, and other personal and policy-specific details.

However, a general form of the formula that can be used as a starting point is:

[tex]\[ \text{Annual Premium} = \text{Base Rate} \times \text{Coverage Amount} \times \text{Adjustment Factors} \][/tex]

Here, the base rate is the initial cost of insurance per unit of coverage, which is determined by the insurer based on the type of insurance and the average risk associated with it.

The coverage amount is the total amount of coverage the policyholder is purchasing. Adjustment factors are multipliers that reflect the policyholder's individual risk factors, such as age, health, driving record, credit score, etc.

The growth of a new strain of bacteria is represented by y=79.31(1,48)^x,where x represents the number of days a y represents the number of bacteria.which is the best prediction for the number of bacteria on day 6

Answers

Answer:

Choice D; 833

Step-by-step explanation:

The best prediction for the number of bacteria on day 6 will be given by substituting x with 6 in the exponential growth model;

[tex]y=79.31(1.48)^{x}\\y=79.31(1.48)^{6}\\y=833[/tex]

you bought a video game for 50$,but it loses 25% of its value every six months. how much will the video game be worth after two years​

Answers

keeping in mind that two years is 24 months, and we know that cyclically it's losing 25% every 6 months.

[tex]\bf \textit{Periodic/Cyclical Exponential Decay} \\\\ A=P(1 - r)^{\frac{t}{c}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &50\\ r=rate\to 25\%\to \frac{25}{100}\dotfill &0.25\\ t=\textit{elapsed time}\dotfill &24\\ c=period\dotfill &6 \end{cases} \\\\\\ A=50(1 - 0.25)^{\frac{24}{6}}\implies A=50(0.75)^4\implies A\approx 15.82[/tex]

There are 4 periods of 6 months in 2 years so 50x0.75^4= $15.82

On a coordinate plane, what is the distance between the points (-4, -3) and (-1, 5)? Round your answer to the nearest hundredth.

Answers

Answer:

8.54

Step-by-step explanation:

To find the distance between 2 points

d = sqrt( y2-y1)^2 + (x2-x1)^2)

where (x1,y1) and (x2,y2) are the two points

d = sqrt((5--3)^2+ (-1--4)^2)

  = sqrt((5+3)^2+ (-1+4)^2)

  =  sqrt((8)^2+ (3)^2)

   = sqrt(64+ 9)

    =sqrt (73)

    =8.544003745

Rounding to the nearest hundredth

   =8.54

ANSWER

The distance between the two points is 8.54 to the nearest hundredth.

EXPLANATION

We want to find the distance between the the points (-4, -3) and (-1, 5).

We use the distance formula;

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

[tex]d=\sqrt{( - 1 - -4)^2+(5- - 3)^2}[/tex]

[tex]d=\sqrt{( 3)^2+(8)^2}[/tex]

[tex]d=\sqrt{9+64}[/tex]

[tex]d = \sqrt{73} [/tex]

[tex]d = 8.544[/tex]

To the nearest hundredth the distance is 8.54 units.

A child’s toy harp is in the shape of a trapezoid as shown.
In square inches, what is the area of the harp?

Answers

Hello! your answer is going to be 64 square inches.

The equation to get this is as listed:

[tex]Area = \frac{Base1+Base 2}{2} * Height[/tex]

I hope this helps, and have a nice day!

Answer:

a = 64 ft²

Step-by-step explanation:

a = a + b   (h)

       2

a = 4 + 12/2 (8)

a = 16/2 (8)

a = 8 (8)

a = 64 ft²

A parallelogram-shaped tile has an area if 48 in.2. The base of the tile measures 12in. What is the measure of bits height

Answers

Answer:

height = 4 in

Step-by-step explanation:

The area (A) of a parallelogram is calculated using the formula

A = base × height ← substitute values

48 = 12 × height ( divide both sides by 12 )

4 = height

If f(x) = x+4 and g(x) =x^3, what is (g•f)(-3)

Answers

ANSWER

[tex](g\circ f)( - 3) = 1[/tex]

EXPLANATION

The given functions are

[tex]f(x) = x + 4[/tex]

and

[tex]g(x) = {x}^{3} [/tex]

The composite function,

[tex](g\circ f)(x) = g(f(x))[/tex]

[tex](g\circ f)(x) = g(x + 4)[/tex]

[tex](g\circ f)(x) = ( {x + 4)}^{3} [/tex]

We now substitute x=-3 to obtain:

[tex](g\circ f)( - 3) = ( { - 3 + 4)}^{3} [/tex]

[tex](g\circ f)( - 3) = ( {1)}^{3} = 1[/tex]

Answer:

The answer is 1

if n/5=45/75.find the value of n.

Answers

Start with

[tex]\dfrac{n}{5}=\dfrac{45}{75}[/tex]

Multiply both sides by 5:

[tex]n = \dfrac{45\cdot 5}{75} = \dfrac{45}{15} = 3[/tex]

Answer:

n = [tex]\frac{9}{5}[/tex]

Step-by-step explanation:

Simplify the fraction on the right side

[tex]\frac{n}{5}[/tex] = [tex]\frac{45}{75}[/tex] = [tex]\frac{3}{5}[/tex] ( cross-  multiply )

5n = 15 ( divide both sides by 5 )

n = 3

How old am i if 500 reduced by 3 times my age is 266

Answers

Hey there!

Let's start by making an equation to represent this.

500 - 3a = 266

Reduced by is the same as subtracting, and a represents age.

Subtract 500 from both sides.

-3a = -234

Divide each side by -3.

a = 78

Check.

500 - 3(78) = 266

500 - 234 = 266

266 = 266

You are 78 years old.

Hope this helps!

Answer: Age=78

Step-by-step explanation:

500-(3xAge)=266

500-266=3xAge

(500-266)/3 = Age

Find the area of the polygon.

Answers

Answer:

2,400 cm²

Step-by-step explanation:

You can solve for x because you know that 40cm=x²+4cm:

36 cm = x²

x = 6cm.

Therefore the width is 2(6)²-12, which is 60cm.

So the area is 40 cm x 60 cm, which is 2,400 cm².

find the mode for a data set. 18,24,24,24,25,37,37,46

Answers

Answer:

24 is the mode

Step-by-step explanation:

Mode is the number that is most often seen.

18 is seen 1 time

24 is seen 3 times

25 is seen 1 time

37 is seen 2 times

46 is seen 1 time

24 is the mode because it is seen the most often.

Answer:

24

Step-by-step explanation:

The mode is the number that appears the most times in a data set.  Here, 24 occurs the most (3 times)

What is the solution to the following system of equations?

Answers

Answer:

(3,2)

Step-by-step explanation:

Make sure you use substitution to solve the equation for either x or y first. Then once you have the value of one, plug it into the equation to solve for the value of the other.

The answer is the third one.

PLEASE HELP
Triangle FGH was dilated to create triangle ABC.
What is the scale factor of the dilation?
3
1/3
2
1/2

Answers

Answer:

1/2

Step-by-step explanation:

Triangle FGH was dilated to create triangle ABC

The image is a reduction so scale factor is between 0 and 1

2.5/5 = 3.5/7 = 4.3 / 8.6

= 0.5  

= 1/2

Answer

1/2

The scale factor of the dilation is,

⇒ 1 / 2

What is mean by Triangle?

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

We have to given that;

Triangle FGH was dilated to create triangle ABC.

Hence, For scale factor,

Since, Triangle FGH was dilated to create triangle ABC

So, We get;

The scale factor is,

2.5/5 = 3.5/7 = 4.3 / 8.6

2.5 / 5 = 1/2

3.5/7 = 1/2

4.3/8.6 = 1/2

Therefore, The scale factor of the dilation is,

⇒ 1 / 2

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On a local sports team, 70% of 50 players are right handed. How many right handed players are there?

Answers

Answer: 35

Step-by-step explanation: So first we take 50 and multiply it by 70%. In decimal form, 70%=0.70. This should give you 35 players that are right handed if you multiply 50*0.70

The answer is 35!!!!!!

A prism has the surface area of 100 cm². What sentence describes the effect of measuring the surface area in square millimeters?

A. The Surface area increases

B. The Surface area decreases

C. The surface area stays the same, but the number representing the surface area increases.

D. The surface area stays the same, but the number representing the surface area decreases.

Answers

Answer:

 A. The surface area stays the same, but the number representing the surface area increases.

Answer:

C

Step-by-step explanation:

How do you solve -3x-4>5

Answers

Answer:

x<−3

Step-by-step explanation:

−3x−4>5

Step 1: Add 4 to both sides.

−3x−4+4>5+4

−3x>9

Step 2: Divide both sides by -3.

−3x

−3

>

9

−3

x<−3

Answer:

x < -3

Step-by-step explanation:

We must isolate x.

Start by adding 4 to both sides, obtaining -3x > 9.

Next, divide both sides by -3, remembering to reverse the direction of the > symbol:

-3x       9

------ > -----  ↔  x < 9/(-3), or x < -3

 -3       -3

which equation describes the porportion: the number of chickens (c) is four times as many the number of horses (h) on the farm​

Answers

Answer:

c4:h1

Step-by-step explanation:

Answer:

c=4h

Step-by-step explanation:

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