Mixed 3 liters 20% solutions with 2 liters 70% solution. What’s the final concentration,

Answers

Answer 1

Answer:

(3×20%+2×70%)/3+2=40%

Step-by-step explanation:

Assuming the potions are the same type or do mix then probably the concentration of the potion depends on the type of reaction they have to each other.

Yet we can average the percentage of the active ingredient by the principle mentioned above

Answer 2

Answer:

The final concentration is 40%.

Step-by-step explanation:

Let x the concentration of final solution.

3 liters of solution (1) with 20% concentration is mixed with 2 liters of 70% solution producing (3 + 2) = 5 liters of x% mixture.

Now 3 × (20%) + 2 × (70% = 5 (x%)

3 × 0.2 + 2 × 0.7 = 5 (0.1x)

0.6 + 1.4 = 0.05x

2 = 0.5x

x = 2/0.05

= 40%

The final concentration is 40%.


Related Questions

2y3 - 27 + 5y2 + (25 / 5)
What is the value of the expression when y = 2?
a)14
B)0
c)7
d)68

Answers

Answer:

The correct option is A

Step-by-step explanation:

The expression is

2y3 - 27 + 5y2 + (25 / 5)

Substitute the value of y=2 in the expression:

=2(2)³-27+5(2)²+(25/5)

We know that 2³ means multiply 2 three times

2³= 2*2*2=8

Likewise 2²=2*2=4

=2(8)-27+5(4)+(25/5)

=16-27+20+25/5

Now take the L.C.M which is 5

=80-135+100+25/5

Solve the values in the numerator:

=70/5

=14

Thus the correct option is A....

The perimeter of a square is equal to four times the length of its side write the direct variation equation that represents this situation let y be the dependent variable and let x be the independent variable

Answers

Answer:

y = 4x

Step-by-step explanation:

Let x = length of the side = independent variable

Let y = perimeter of the square = dependent variable

y = 4x

What is the scale factor of LMN to OPQ?

Answers

Answer:

The scale factor is 1 because it has not increased or decreased and therefore are congruent

Find the value of x using the laws of sine.​

Answers

Answer:

Rounded to nearest hundredths is 8.75.

Rounded to nearest tenths is 8.7.

Step-by-step explanation:

Law of sines:

[tex]\frac{\sin(A)}{\text{ side opposite to }A}=\frac{\sin(B)}{ \text{ side opposite to }B}[/tex]

Measure of angle [tex]A[/tex] is 28 and the side opposite to it is [tex]x[/tex].

Measure of angle [tex]B[/tex] is 105 and the side opposite to it is 18.

Plug in to the formula giving:

[tex]\frac{\sin(28)}{x}=\frac{\sin(105)}{18}[/tex]

Cross multiply:

[tex]18 \sin(28)=x \sin(105)[/tex]

Divide both sides by sin(105):

[tex]\frac{18 \sin(28)}{\sin(105)}=x[/tex] is the exact answer.

I'm going to type it in my calculator now:

18*sin(28) / sin(105) is what is going in there.

The output is 8.748589074.

Rounded to nearest hundredths is 8.75.

Rounded to nearest tenths is 8.7.

Money in a savings account is compounded continuously over time, t, and is modeled by the function
f(t) = 1000e0.017. What is the rate at which the balance grows?

Answers

Answer:

  1.7% compounded continuously

Step-by-step explanation:

The model used for continuous compounding is ...

  f(t) = Pe^(rt)

where P is the principal amount, and r is the interest rate being compounded. Assuming a typo in your given equation, you have ...

  f(t) = 1000·e^(0.017t)

Matching the various parts of the equation, we see that P = 1000 and r = 0.017 = 1.7%.

The balance grows at a continuous rate of 1.7%.

To find the growth rate of the account balance in the given function, we differentiate it to obtain [tex]f'(t) = 1000 × 0.017e^(0.017t)[/tex], which shows that the balance grows at a continuous compound rate of 1.7% per year.

The student's question refers to a savings account where the money is compounded continuously. We are given the function [tex]f(t) = 1000e^{0.017t,[/tex]that models the account balance over time t. To find the rate at which the balance grows, we can differentiate this function concerning time.

The derivative of the function[tex]f(t) = 1000e^{0.017t[/tex] concerning t gives us [tex]f'(t) = 1000 × 0.017e^{0.017t[/tex]. This represents the rate of change of the account balance at any time t, which is also the growth rate. Therefore, the rate at which the balance grows is 0.017 or 1.7% per year.

Determine if the function is a polynomial function. If the function is a polynomial function, state the degree and the leading coefficient. If the function is not a polynomial, state why. f(x)=(2x+3)^2(3x+5)^2




This is not a polynomial function because there is no leading coefficient.



This is a polynomial function of degree 4 with a leading coefficient of 36.



This is a polynomial function of degree 4 with a leading coefficient of −36.



This is not a polynomial function as the factors are not all linear.

Answers

The given function [tex]f(x)=(2x+3)^2(3x+5)^2[/tex] is a polynomial function of degree 4, with a leading coefficient of 36 determined by multiplying the squares of the leading terms of the binomials.

The function[tex]f(x)=(2x+3)^2(3x+5)^2[/tex] is indeed polynomial. To determine the degree and the leading coefficient of a polynomial, we need to expand the given expression. However, without full expansion, we can deduce the degree by adding the exponents of the individual factors since the bases are polynomials of degree 1 (2x+3 and 3x+5).

Each factor is squared, so [tex](2x+3)^2[/tex] has degree 2 and ([tex]3x+5)^2[/tex]also has degree 2. By adding these, we find that the polynomial's degree is 2+2=4. To find the leading coefficient, we consider the leading terms of each binomial which are 2x and 3x. Squaring these and then multiplying them together [tex](2x)^2 * (3x)^2 = 4x^2 * 9x^2,[/tex]we get 36 as the leading coefficient when x is raised to the 4th power. Therefore, the correct answer is: This is a polynomial function of degree 4 with a leading coefficient of 36.

cos x cos (-x) -sin x sin (-x) = 1. Verify the Identity. Please Show All Steps.

Answers

Answer:

cos x cos (-x) -sin x sin (-x) = 1 ⇒ proved down

Step-by-step explanation:

* Lets revise the angles in the four quadrants

- If angle x is in the first quadrant, then the equivalent angles to it are

# 180 - x ⇒ second quadrant (sin (180 - x) = sin x , cos (180 - x) = -cos x

  tan (180 - x) = -tan x)

# 180 + x ⇒ third quadrant (sin (180 - x) = -sin x , cos (180 - x) = -cos x

  tan (180 - x) = tan x)

# 360 - x ⇒ fourth quadrant (sin (180 - x) = -sin x , cos (180 - x) = cos x

  tan (180 - x) = -tan x)

# -x ⇒fourth quadrant (sin (- x) = -sin x , cos (- x) = cos x

  tan (- x) = -tan x)

* Lets solve the problem

∵ L. H .S is ⇒ cos x cos (-x) - sin (x) sin (-x)

- From the rules above cos x = cos(-x)

∴ cos x cos (-x) = cos x cos x

∴ cos x cos (-x) = cos² x

- From the rule above sin (-x) = - sin x

∴ sin x sin (-x) = sin x [- sin x]

∴ sin x sin (-x) = - sin² x

∴ cos x cos (-x) - sin (x) sin (-x) = cos² x - (- sin² x)

∴ cos x cos (-x) - sin (x) sin (-x) = cos² x + sin² x

∵ cos² x + sin² x = 1

∴ R.H.S = 1

∴ L.H.S = R.H.S

∴ cos x cos (-x) -sin x sin (-x) = 1

The Amboy Kennel Club has held an annual dog show for the last 42 years. During this time he winner of "Best of Show" has been an Alaskan Malamute 21 times, a Great Pyrenees 3 times, and an Siberian Husky 18 times. Determine the empirical probability that the next winner of "Best of Show" will be a Great Pyrenees.

Answers

Final answer:

The empirical probability of a Great Pyrenees winning the 'Best of Show' at Amboy Kennel Club based on past performances is about 7.143%

Explanation:

The subject at hand is empirical probability, which is calculated by dividing the number of times an event has happened by the total number of outcomes. In this case, the event is a Great Pyrenees winning 'Best of Show' and the total number of outcomes is the total number of dog shows.

According to the data provided, the Great Pyrenees has won 3 times out of a total of 42 dog shows. Therefore, the empirical probability can be calculated as follows:

Number of wins by Great Pyrenees = 3Total number of dog shows = 42

The empirical probability is then calculated by dividing the number of wins by Great Pyrenees by the total number of dog shows.

Therefore, the empirical probability of a Great Pyrenees winning is 3/42 = 0.07143. So, we could say that there is a 7.143% chance of a Great Pyrenees winning the 'Best of Show' in the future, based purely on historical data.

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The empirical probability that the next "Best of Show" winner will be a Great Pyrenees is calculated to be 0.0714 or 7.14%.

Empirical probability is calculated based on observed data. In this case, we want to determine the probability that the next winner of "Best of Show" at the Amboy Kennel Club will be a Great Pyrenees.

Here's the breakdown:

The total number of dog shows held: 42.The number of times a Great Pyrenees has won: 3.

The empirical probability (P) is calculated as:

P(Event) = Number of favorable outcomes / Total number of outcomes.

So, the empirical probability that the next winner will be a Great Pyrenees is:

P(Great Pyrenees) = 3 / 42 = 1 / 14 ≈ 0.0714.

Thus, the empirical probability is approximately 0.0714 or 7.14%.

A student stands on a bathroom scale that uses the U.S. system of units. Which
of the following is most likely to be the weight shown on the scale?
A. 85 grams
B. 85 ounces
C. 85 pounds
D. 85 kilograms

Answers

Answer: 85 pounds,

Step-by-step explanation: Americans don't use the other things to measure weight.

60 POINTSZZZ HELLPP!!
Question 1(Multiple Choice Worth 5 points)

(06.07A MC)

What is the length of the third side of the window frame below?

(Figure is not drawn to scale.)


15 inches
27 inches
25 inches
32 inches


Question 2(Multiple Choice Worth 5 points)

(06.07A LC)

Ross calculated the missing side length of one of these triangles using the Pythagorean Theorem. Which triangle was it?


E
F
G
H


Question 3(Multiple Choice Worth 5 points)

(06.07A MC)

The figure shows the location of 3 points around a lake. The length of the lake, BC, is also shown.

(Figure is not drawn to scale.)



Which of the following options is closest to the distance (in miles) between points A and B?
3.46 miles
4.24 miles
4.90 miles
5.92 miles


Question 4(Multiple Choice Worth 5 points)

(06.07A LC)

The legs of a right triangle are 3 units and 8 units. What is the length of the hypotenuse? Round your answer to the nearest hundredth.
8.54 units
9.54 units
11.00 units
24.00 units

1st picture is for question 1 2nd picture 2nd question n 3ed for the 3ed question

Answers

15 inches long add 7+5 to get the full total of miles

The function f(x) = -(x - 20)(x - 100) represents a company's monthly profit as a function of x, the number of purchase
orders received. Which number of purchase orders will generate the greatest profit?
20
O 60
O 80
O 100

Answers

Answer:

The correct option is B

Step-by-step explanation:

Lets put the values in the given function one by one: You will get the answer

f(x)=-(x - 20)(x - 100)

The first option is 20. Substitute the value in the function:

f(x)=-(20-20)(20-100)

f(x)=(- 0)(-80)

f(x)= 0

Second option is 60.

Substitute the value in the function

f(x)=-(x - 20)(x - 100)

f(x)=-(60 - 20)(60 - 100)

f(x)=(-40)(-40)

f(x)=160

Third option is 80:

Substitute the value in the function

f(x)=-(x - 20)(x - 100)

f(x)=-(80 - 20)(80 - 100)

f(x)=(-60)(-20)

f(x)=120

Fourth option is 100:

Substitute the value in the function

f(x)=-(x - 20)(x - 100)

f(x)=-(100 - 20)(100 - 100)

f(x)=(-80)(0)

f(x)= 0

Therefore the values we got are 0, 160, 120, 0

The greatest value is 160.

Thus the correct option is B....

Answer:

B.) 60

Step-by-step explanation:

It takes 36 minutes for 7 people to paint 4 walls.
How many minutes does it take 9 people to paint 7 walls?

Answers

Answer:

49 minutes

Step-by-step explanation:

It would take 49 minutes for 9 people to paint 7 walls.

4 walls need 262 people/minutes (7)(36)

9 people could do that in 49 minutes (441/9)

Answer:

49 minutes

Step-by-step explanation:

first we need to find the rate at which a person paints the walls :

it takes 36 minutes  to paint 4 walls   by 7 people :

so for 7 people the rate at which they paint the walls is : [tex]\frac{4}{36}[/tex] walls/minute

if we simplify we get  [tex]\frac{1}{9}[/tex]

now that was for 7 people , for 1 person the rate is : [tex]\frac{1}{9} \frac{1}{7}[/tex] which is [tex]\frac{1}{63} walls / minute[/tex]

now we have the rate for one person

so for 9 people they will paint [tex]\frac{9}{63} =\frac{1}{7}[/tex] walls/minute

so it takes them 7 minute to paint 1 wall

which means it takes them 7 x7 = 49 minutes to paint 7 walls

Find the measure of stv in the figure

Answers

Answer:

STV = 153 degrees

Step-by-step explanation:

180 - 18 = 162 (angles on a straight line equal 180 degrees)

3q + 15q = 162

18q = 162

q = 162 / 18

q = 9

STV = 15q + 18

       = 135 + 18

       = 153

Hope this helps!

UTV is a straight line, which equals 180 degrees.

This means both angles UTS and STV when added together must equal 180.

3q + 15q +18 = 180

Simplify:

18q +18 = 180

Subtract 18 from both sides:

18q = 162

Divide both sides by 18:

q = 162 / 18

q = 9

Now you have a value for q to solve the angle.

STV = 15q +18

Replace q with 9:

STV = 15(9) +18

Simplify:

STV = 135 + 18 = 153 degrees.

A local restaurant has 20 tables all together with the most popular tables by the window and the salad bar. 5 of the tables are next to the window and another 5 of the tables are next to the salad bar. All of the customers are allowed to seat themselves. If all of the window tables are open, what is the probability that the next two customers will choose to sit at the window?

A. 50%
B. 5.2%
C. 52%
D. 6.2%

Answers

Answer:

B. 5.2%

Step-by-step explanation:

Total number of tables = 20

Number of tables next to window = 5

Number of tables next to salad bar = 5

Probability that the first customer chooses the window table = 5 out of 20 = [tex]\frac{5}{20}[/tex]

When this table is chosen, the total remaining tables are 19 out of which 4 tables are next to windows.

So, now the probability that a customer will choose a window table = 4 out of 19 = [tex]\frac{4}{19}[/tex]

Since the selection of two customers is independent of each other, the probability that two customers will chose the window table will be the product of probabilities of their individual selections.

Therefore, the probability that the next two customers will choose to sit at the window = [tex]\frac{5}{20} \times \frac{4}{19} = 0.052[/tex]

Thus, the probability that the next two customers will choose to sit at the window is 0.052 or 5.2%

the probability of picking rotten apple in a box is 1/100 .if there are 6 boxes containing 1200 apples each how many rotten apple may be picked

Answers

Answer:

[tex]\huge{\boxed{72}}[/tex]

Explanation:

First, find the total number of apples.  [tex]6*1200=7200[/tex]

Now, multiply this by the probability of picking a rotten apple, which is [tex]\frac{1}{100}[/tex].  This is also the same as dividing by [tex]100[/tex], or moving the decimal point two places to the left.  [tex]7200*\frac{1}{100}=72[/tex]

This means that based on the probability given, [tex]72[/tex] rotten apples will be picked.

Number of rotten apple may be picked are 72.

What is probability?

Probability is simply how likely something is to happen. Whenever we're unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are.

Given

Probability of picking rotten apple in a box is [tex]\frac{1}{100}[/tex].

There are 6 boxes containing 1200 apples each

Number of rotten apple may be picked to be find.

Total number of apples  = [tex]6 \times 1200 = 7200[/tex]

Number of rotten apple may be picked = [tex]7200 \times \frac{1}{100}[/tex]

= 72

Number of rotten apple may be picked are 72.

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2(5x+3)=4x+18 how would i solve this problem

Answers

x=2
You have to first distribute the two and then you have to move the variable to one side of the equation and the number to the other. The work is attached below

Answer:

x=2

Step-by-step explanation:

2(5x+3)=4x+18                       Remove the brackets

10x + 6 = 4x + 18                   Subtract 4x from both sides.

10x - 4x + 6 = 4x-4x + 18      Combine

6x + 6 = 18                            Subtract 6 from both sides

6x + 6 - 6 = 18 - 6                 Combine

6x = 12                                  Divide by 6

6x/6 = 12/6                           Do the division

x = 2

For each geometric sequence, write a recusive rule by finding the commom ratio by calculating the ration of consecutive terms. Write an exlicit rule for the sequence by writing each term as the product of the first tern and a power of the common ratio.

n- 1, 2, 3, 4, 5
An- 2, 6, 18, 54, 162

Answers

Answer:

[tex]a_n=2.(3)^{n-1}[/tex]

Step-by-step explanation:

Given sequence is:

2,6,18,54,162

So the common ratio can be found by dividing the second term by first term:

r = 6/2 = 3

The standard formula for geometric sequence is:

[tex]a_n=a_1r^{n-1}[/tex]

Putting the value of r

[tex]a_n=2.(3)^{n-1}[/tex]

So,

[tex]a_1=2.(3)^{1-1} => 2.3^0 = 2*1 = 2\\a_2=2.(3)^{2-1} => 2.3^1 = 2*3 = 6\\a_3=2.(3)^{3-1} => 2.3^2 = 2*9 = 18\\a_4=2.(3)^{4-1} => 2.3^3 = 2*27 = 54\\a_5=2.(3)^{5-1} => 2.3^4 = 2*81 = 162[/tex]

in survey 17/25 of the people surveyed have a cat. what percent of the people surveyed have a cat?

Answers

Answer:

The percentage of the people surveyed that have a cat is 68%

Step-by-step explanation:

we know that

To find the percentage of the people surveyed that have a cat, multiply the given fraction by 100

so

[tex]\frac{17}{25}*100=17*4=68\%[/tex]

The system of equations y=2x-1 and y=-1/4x+3 is shown on the graph below. What is a reasonable estimate for the solution?

Answers

Answer:

Something close to (1.8,2.6)

Step-by-step explanation:

y=2x-1

y=-1/4 x+3

Since y=2x-1 and y=-1/4 x +3 then 2x-1=-1/4 x +3.

I'm going to multiply both sides by 4 to get rid of the fraction:

8x-4=-x+12

Add x on both sides:

9x-4=12

Add 4 on both sides:

9x=16

Divide both sides by 9:

x=16/9 is approximately 1.8 when put into calculator.

Now if x=16/9 and y=2x-1, then y=2(16/9)-1=32/9-1=32/9-9/9=(32-9)/9=23/9.

y=23/9 is approximately 2.6 when put into calculator.

So we are looking for an ordered pair pretty close to (1.8,2.6).

The graph is shown to you so I will put one here as well:

Answer:

A. 1 3/4, 2 1/2

Step-by-step explanation:

The length of an edge of a cube is 4 ft.
What is the volume of the cube?
Enter the answer.
[1] ft3

Answers

Answer:

V = 64 ft^3

Step-by-step explanation:

The volume of a cube is given by

V = s^3 where s is the side length of the cube

V = (4)^3

V = 64 ft^3

Answer:

64 ft

Step-by-step explanation:

Volume=Height*Length*Base

=4*4*4

=16*4

=64 ft

The equation y=mx+b is the slope-intercept form of a linear equation.

Solve y=mx+b for m

Answers

Answer: [tex]m=\frac{y-b}{x}[/tex]

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

[tex]y=mx+b[/tex]

Where "m" is the slope of the line and "b" is the y-intercept.

To solve for the slope "m", you can follow these steps:

- Subtract "b" from both sides of the equation:

[tex]y-b=mx+b-b\\\\y-b=mx[/tex]

- Divide both sides of the equation by "x". Then:

[tex]\frac{y-b}{x}=\frac{mx}{x}\\\\m=\frac{y-b}{x}[/tex]

Which choice shows the coordinates of C’ if the trapezoid is reflected across the y-axis?

A) (-5,3)
B) (3,-5)
C) (5,-3)
D) (-3,5)

Answers

Answer:

A

Step-by-step explanation:

C is located at (5,3).

If you want to reflect this over the y-axis, you need to have the same distance that (5,3) is to the y-axis on both sides.

If you look at your graph you should see that (5,3) is 5 units a way from the y-axis so when you put it on the other side it should be 5 units a way also.

So the reflection will give you (-5,3)

Answer:

C) (5,-3)

See attached image for explanation.

identify an equation in point-slope form for the line perpendicular to y=-1/2x+11 that passes through (4,-8).
A. y+8=2(x-4)
B. y+8+1/2(x-4)
C.y-8=1/2(x+4)
D.y-4=2(x+8)

Answers

Answer:

A. y+8=2(x-4)

Step-by-step explanation:

A line perpendicular to y=-1/2x+11 would have slope +2, which is the negative reciprocal of -1/2.

Starting with the slope-intercept form of the equation of a straight line, find the y-intercept based upon this new line's passing through (4, -8):

y = mx + b becomes  -8 = 2(4) + b.  Then b = -16, and the desired new line is

y = 2x - 16.  

Eliminate answer choices B and C, because 1/2 is not the correct slope.

Choice A is correct.  Note that the result of subbing 4 for x and -8 for y into A:  y + 8 = 2(x - 4) is a true equation:  -8 + 8 = 2(4 - 4)

Also note that y + 8 = 2(x - 4) can be written in slope-intercept form:

y = -8 + 2x - 8, or y = 2x - 16 (same as obtained earlier)

Answer:Y+8=2(x-4)

Step-by-step explanation:

it’s correct I promise

Find the x-intercept of the line whose equation is 8x+2y=4

Answers

Answer:

x = 1/2

Step-by-step explanation:

Plug in 0 for y

8x + 2(0) = 4

Simplify

8x + 0 = 4

8x = 4

Divide both sides

8x/8 = x

4/8 = 1/2

Simplify

x = 1/2

Answer

x = 1/2

Answer:

X=1/2

Step-by-step explanation:

Let f(x) = 9x3+ 21x2^ - 14 and g(x) = 3x + 1. Find "
f (x) over g (x)​

Answers

Answer:

[tex]\frac{f(x)}{g(x)}=3x^2+6x-2-\frac{12}{3x+1}[/tex]

Step-by-step explanation:

The first function is [tex]f(x)=9x^3+21x^2-14[/tex]

The second function is [tex]g(x)=3x+1[/tex].

[tex]\frac{f(x)}{g(x)}=\frac{9x^3+21x^2-14}{3x+1}[/tex]

We perform the long division as shown in the attachment to obtain the quotient as: [tex]Q(x)=3x^2+6x-2[/tex] and remainder [tex]R=-12[/tex].

Therefore:

[tex]\frac{f(x)}{g(x)}=3x^2+6x-2-\frac{12}{3x+1}[/tex]

where [tex]x\ne -\frac{1}{3}[/tex]

Answer:

on the flvs test it is option A

Step-by-step explanation:

Which is the correct calculation for the volume of the pyramid?

Answers

Answer:

h×a²×1/3

Step-by-step explanation:

where h is the vertical height of pyramid a is the length of base ..this formula is applicable for square based pyramid only.

Answer:

1/3 A h.

Step-by-step explanation:

The volume of a pyramid is 1/3 * area of the base * height = 1/3 A h.

So for example the area of a square-based  pyramid = 1/3 s^2 h where s is the length of a side of the square.

What type of triangle can an isosceles triangle be? Secalene acute obtuse isosceles

Answers

An isosceles triangle is the following options, acute and isosceles, which is B and D. Remember that an isosceles triangle has 2 sides that are the same, so its D and every isosceles triangles are acute, not obtuse, so its B.

Hope this helped!

Nate

Answer:

Acute triangle

Step-by-step explanation:

A isosceles triangle is a triangle that has two equal sides.

It would not be a scalene triangle because in scalene triangles all the sides have different lengths.

It might be an acute triangles because all the angles in an acute triangle would be acute angles.

it wouldn't be an obtuse triangle because in an obtuse triangle there is at least one obtuse angle and the other 2 angles would be either acute, right, or obtuse.

It could be an isosceles triangle but that wouldn't make sense since its already an isosceles triangle.

Hope This Helps!!!

Three consecutive integers have a sum of –21. Which equation can be used to find the value of the three numbers?
x+x+x=-21
x+2x+3x=-21
x+(x+1)+(x+2)=-21
x+(x+2)+(x+4)=-21

Answers

Answer:

The third one, x+(x+1)+(x+2)=-21 because x, x+1 and x+2 are three consecutive numbers.

Madison represented the sentence

"The product of 3 and the difference of -4 and the quotient of a number and -2 is at most 5"

by using the inequality 3 (-4 - n/-2) < 5

What is madison's error?

Answers

Answer:

The mistake is that it can be 5.  They forget to include the equals in the less than or equals

Step-by-step explanation:

Start at the inside and work out

quotient of a number and -2

n/-2

difference of -4 and the quotient of a number and -2

-4 - n/-2

product of 3 and the difference of -4 and the quotient of a number and -2

3* (-4 - n/-2)

is at most 5

3* (-4 - n/-2)≤5

The mistake is that it can be 5.  They forget to include the equals in the less than or equals

Answer: C

Step-by-step explanation:

Which of the following is the simplified fraction that's equivalent to 9.315?

A. 9315⁄999
B. 931⁄99
C. 9105⁄333
D. 935⁄111

Answers

For this case we must indicate a fraction equivalent to 9,315.

 We evaluate the fractions:

[tex]\frac {9315} {999} = 9.32432432432\\\frac {931} {99} = 9,40404040404\\\frac {9105} {333} = 27,3423423423\\\frac {935} {111} = 8,42342342342[/tex]

It is observed that the fraction closest to 9,315 is[tex]\frac {9315} {999}[/tex]

If we round 9.315 we have 9.32

If we round[tex]\frac {9315} {999}[/tex] we have 9.32

Answer:

Option A

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