The sum of two numbers is twenty-one. one number is eighteen less than two times the other. find the numbers.

Answer:

Step-by-step explanation:

Ans:

−

0.6

Alexandra could make 24 scarves if she spent the whole time knitting, by unitary method.

A single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method.

Now,

Refer to the image attached for the values and information.

Hence, Alexandra could make 24 scarves if she spent the whole time knitting, by unitary method.

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It is False to state that the age distribution of a population is not important when considering the growth rate of that population.

Population growth is the rise in the number of inhabitants in a population or scattered group and it is usually stated in percentage.

Researchers often focus on four primary elements when forecasting changes in population size:

Other factors include:

Age distribution and statistics allow the pace of population growth to rise or decline as it is linked to the level of economic development of a population.  a fast-expanding country's population has a pyramid-shaped age structure, with a higher share of younger people of reproductive age.

Therefore, we can conclude that it is False to state that the age distribution of a population is not important when considering the growth rate of that population.

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Lily, the cheer team's captain, is putting together a performance for a tournament. A routine may be no less than 3 minutes in length and no more than 5 minutes in total. For which the two solutions are the shortest and longest permitted lengths, write an absolute value.

The absolute value for 3 is 3 .

The absolute value for 5 is 5.

The two solutions are the shortest and longest permitted lengths, The absolute value |2x−5|+|2x−3|=2

Absolute value is the non-negative value of a real number x, independent of its sign, is its absolute value (or modulus), | x |.

For example, 5 has an absolute value of 5, and -5 has a value of 5. Another way to think about a number's absolute value is as its distance from zero on the real number line. In addition, the distance between two real numbers is the absolute value of their difference.

Given that,

A routine may be no less than 3 minutes in length and no more than 5 minutes in total.

By absolute value equation

we can get 2x−5|+|2x−3|=m

By solving we get 2 m values they are,

m={-8,2}

Here, -8 we can take but the answer will be in decimal soo we take 2.

|2x−5|+|2x−3|=2

We get

[tex]|4x-8|=2\\|x-2|=1\\|x|=3\\[/tex]

If we take 2x =y

|y−5|+|y−3|=2

[tex]|2y-8|=2\\|y-4|=1\\|y|=5[/tex]

Therefore,

The absolute value for 3 is 3 .

The absolute value for 5 is 5.

The two solutions are the shortest and longest permitted lengths, The absolute value |2x−5|+|2x−3|=2.

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Answer:

The answer is C

Step-by-step explanation:

The first step is to multiply 154 and 63 to find the product. The product of those two numbers is 9702.

So the the equation looks like...

462+ Blank = 9702

The easiest thing to do here is subtract 462 from both sides. So 9702-462 which would equal 9240.

So we'll say that the blank is x so now the equation says...

x = 9240

Answer:

1) 4a x 4b  when a is 2 and b is 2

2) 2a + 4x  when a is 2 and x is 8

Step-by-step explanation:

Answer:

169

Step-by-step explanation:

Answer:

Assume x to be the number of snow globe kits that come in each box.

Then the equation that describes the given situation is

13x - 10 = 172

13x = 182

x = 14

So, the number of snow globe kits that come in each box is 14.

Model is same shape as original with scale factor 2:9.

Ratio of

a. Surface area of model and original is 4:81.

b. Height of model and original is 2:9.

c. Volume of model and original is 8:243.

As given,

Scale factor (a: b)=2:9

Ratio of model and original for

a. Surface area =a²: b²

                         =4:81

b. Height=a :b

              =2:9

c. Volume=a³ :b³

                =8:243

Therefore, model is same shape as original with scale factor 2:9.

Ratio of model and original for

a. Surface area is 4:81.

b. Height  is 2:9.

c. Volume is 8:243.

The complete question is :

A designer builds a model of a canoe. the finished model is exactly the same shape as the original, but smaller. the scale factor is 2:9.

(a) find the ratio of the surface area of the model to the surface area of the original. (b) find the ratio of the height of the model to the height of the original. (c) find the ratio of the volume of the model to the volume of the original.

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Answer: 16

Step-by-step explanation:

Let's say x=Geometric mean.

4*64=x*x

x*x=256    

x^2=256

x=16

Answer:

90

Step-by-step explanation:

In order for Brady to earn a B in his biology course, his test scores must

average at least 80%. On the first 5 tests, he has an average of 77%. There

is one test remaining in the course. What is the minimum score Brady

needs to earn on the last test to receive a B in the class?

The result of the operation is -27 < -18 and the result is true

The inequality expression is given as:

-15 < -6

The operation on the inequality expression is given as:

Subtract 12 from both sides of the inequality.

So, we start by subtracting 12 from both sides of the above inequality

This is represented as

-15 - 12 < -6 - 12

Evaluate the difference

So, we have

-27 < -18

The above inequality is true because -27 is less than -18

Hence, the result of the operation is -27 < -18 and the result is true

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Her change in account is x - 75 dollars.

She makes 3 withdrawals of $25.

Her change in account can be calculated as follows:

Therefore, let's find her change in her account,

Let us say she had x dollars in her account.

She withdraws 25 dollars on three occasions.

Therefore,

total withdrawer = 25 × 3

total withdrawer = 75 dollars

Therefore,

Her change in account = x - 75

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Answer:

Step-by-step explanation:

1. 25x3

2.75

The probability or chance of Tara being selected is 1/29.

Probability is the chance of happening something or the occurrence of something . We can also define the probability as the chance of occurring or the chance of selecting something from the total set of value. It is always ranges from 0 to 1 where 0 is minimum value and 1 is maximum value of probability.

Formula for probability is :

[tex]P(Event) =\frac{ Chance \ of \ occurring \ that \ event}{total \ occurance}[/tex]

where, the total occurrence is the sample space of our given data or we can say the total number of values in the sample space.

In the given question,

Chance of selecting Kenny = 1 / 29

=> P(Kenny is selected) = 1/29

That means sample space consist of 29 values.

Now, P(Tara is selected) = 1 / sample space

=> P(Tara is selected) = 1/29.

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The complete question is :

Kenny and Tara are both members of a population, and a simple random sample is being conducted. If the chance of Kenny being selected is 1/29, what is the chance of Tara being selected?

Answer:

8x¹⁰+203x/50

Step-by-step explanation:

Answer: 4203/50

Step-by-step explanation:

8 x 10 + 4 x 1 + 6 x (1/100)=

80 + 4 + 6/100=

84 + 6/100=

84 + 3/50=

(84 + 3/50)*50/50=     ==> multiply by 50 to remove denominators

(84 * 50 + 3 * 50/50)/50=

(84 * 50 + 150/50)/50=

(4200 + 3)/50=4203/50

Answer:

15

Step-by-step explanation:

30 ÷ 2 = 15

to check, 15 × 2 = 30

Answer:

810

Step-by-step explanation:

382.50-180= 202.5

202.5 / 0.25= 810

Hope this helps!

Answer:

810 miles

Step-by-step explanation:

$180 a week is the fixed cost so we subtract this first.

($382.50 - $180 = $202.50)

The number left is the amount of dollars charged per mile.

So if we divide this number by $0.25, we get how many miles travelled.

($202.50 ÷ $0.25 = 810 miles)

Answer:

True

Step-by-step explanation:

1/200=0.005

Hope It Helps

Sorry If I'm Wrong

Answer:

9y

Step-by-step explanation:

[tex]\bullet\; \tt{(3y)^2} = 3^2y^2 = 9y^2}[/tex]

[tex]\bullet\; \tt y^{-1} = \dfrac{1}{y}\\\\\bullet\;(3y)^2 \times y^{-1} = 9y^2 \times \dfrac{1}{y } = \dfrac{9y^2}{y}\\\\\\bullet \tt \dfrac{y^2}{y} = y\\\\\tt \bullet \dfrac{9y^2}{y} = 9y[/tex]

Answer: If she walks 7.7 klometers each day that would be 53.9 klometers each week

Step-by-step explanation:

Answer:

53.9 kilometers a week

Step-by-step explanation:

7.7 kilometers a day

7 days = 1 week

7 days * 7.7 kilometers = 53.9 kilometers per week

Answer:

72

Step-by-step explanation:

This is clearly multiplication so all you have to do is multiply 24 x 3 and your answer is There are 72 subscribers in week 24

Answer:

Step-by-step explanation:

for the function i get f(x)=1.99x+3

f(x) = 1.99x + 3 for x>0

x≥1

X cannot get to zero it is no allowed by the function I defined

i tried my best

PABc = 3/36

PABc = 1/12.

Two dice are tossed.

Assume that each possible outcome has 1/36.

Let A be the event the probability of getting some of the faces showing is 6.

A = 1,5,5,12,44,23,3

Let B be the event that the face showing one die is twice on the other.

That is,

B =1,22,12,44,23,66,3

There are 36-6=30 events in Bc

However, A and Bc will only be having 3 pairs together = 1,55,13,3

Therefore,

PABc = 3/36

PABc = 1/12.

How many outcomes are possible for the sum of the faces showing?

There are countless outcomes that could occur. The sum of the faces shown has an endless number of outcomes. This is due to the fact that there are an endless number of ways to flip a coin, which will produce various combinations on the faces that are displayed. The sum of the faces and the tails has an endless number of outcomes. There are only two outcomes that can occur while tossing a coin because the total number of outcomes is always even.

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Answer: D

Step-by-step explanation: 2.50xb=80 b= 32 boxes

Answers:    middle box:   1.32

                   middle right box:   -3.3

                   bottom left:   -0.5

                   bottom middle:   0.6

Step-by-step explanation:

[Find out the middle box]

[tex]-1.2[/tex] x [tex]-1.1[/tex][tex]=1.32[/tex]

[Find out the box in the middle right]

[tex]3[/tex] x [tex]-1.1 = -3.3[/tex]

[To Find out the bottom left box - divide each side by three]

[tex]x[/tex] x [tex]3 = -1.5[/tex]

[tex]x = -0.5[/tex]

[Bottom middle box]

[tex]-0.5[/tex] x [tex]-1.2 = 0.6[/tex]

General Rule:

[tex]negative[/tex] x [tex]negative = positive[/tex]

[tex]negative[/tex] x [tex]positive = negative[/tex]

Hope this helps   :)

The new balance in her account will be $150.

We have Alessa.

We have to find the new balance of her account after receiving four $-25 charges.

Account is referred here as a bank account used for the purpose of saving money by the people.

According to the question -

Initial money in Alessa's account = $50

Total money received = $25 x 4 = $100

Therefore, the new balance in her account will be -

$50 + $25 x 4 = $150

Hence, the new balance in her account will be $150.

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Answer:

$6555

Step-by-step explanation:

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day :)

If a carpenter cut the top section of a window frame with a 40º angle on each end. The side pieces each have a 50º angle cut at their top ends, as shown. Yes the side pieces of the frame will be parallel. How i know is that both side are equal or parallel.

The interior angles are the same in measure and the sum of the interior angles have to  be 180°.

The two side  pieces on both the right and left hand side are equal in measure. The sides can be parallel only if the sum of both side angles is equal to 180°

Hence,

One side of the interior angle=40º+50º

One side of the interior angle=90°

Both side of the interior angle=90°+90°

Both side of the interior angle=180°

Hence,

180°=180°, the sides are parallel

Therefore Yes the side pieces of the frame will be parallel. How i know is that both side are equal or parallel.

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The truck driver drive 36.61 miles per hour .

It is given that a truck driver drove 119 miles in 3 1/4 hours .

On simplifying the time , we get

[tex]3\frac{1}{4} =\frac{3\times4+1}{4}\\\\ 3\frac{1}{4} =\frac{13}{4}[/tex]

which means that truck driver drove 119 miles in [tex]\frac{13}{4}[/tex] hours .

Using unitary method , we get

[tex]\frac{13}{4}[/tex] hours is taken by driver to complete = 119 miles

1 hour is taken by driver to complete [tex]=\frac{119\times4}{13} \\[/tex]

                                                                [tex]=36.61 \ miles[/tex]

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Answer: 13 pieces

Step-by-step explanation:

4 m * 100 cm/1 m=

4 * 100/1=

4*100=400 cm.

400/30=

(10+390)/30=

10/30 + 390/30=

1/3 + 13 ==> 13 pieces

Work Shown:

1 meter = 100 cm

4 meters = 400 cm

400/30 = 13.33 approximately

That rounds down to 13

You'll have 400-13*30 = 400-390 = 10 cm of ribbon leftover.