preform the operation indicated (x^2+7x-9)-(3x^2-2x+11)

Answer:

-21. -19.-17

Step-by-step explanation:

Let x be the smallest

x+2 next smallest

x+4 be the largest

4*(x) = 18+6(x+4)

Distribute

4x = 18+6x+24

Combine like terms

4x = 42+6x

Subtract 6x from each side

-2x = 42

Divide by -2

-2x/-2 = 42/-2

x = -21

x+2 = -19

x+4 = -17

Answer:

- 21, - 19, - 17

Step-by-step explanation:

Let y be the smallest no.

& y + 2 next smallest no.

& y + 4 be the largest no.

= 4 * (y) = 18 + 6 * (y + 4)

4y = 18 + 6y + 24

4y - 6y = 42

- 2y = 42

= - 21

The other 2 numbers are:

y + 2

= - 19

y + 4

= - 17

Hope this helps!

Answer:

7 hours

Step-by-step explanation:

(62-13)/7=7

Answer:

2,8,8

Step-by-step explanation:

The class interval 20 <h < 30  contains the median.

To find the interval in which median is lies, first we have to find the cumulative frequency.

The table is,

Height range                   frequency                     Cumulative frequency

0<h < 10                               1                                        1

10 <h < 20                            9                                        1 + 9 = 10

20 <h < 30                           7                                       10 + 7 = 17

30 <h < 40                           13                                       17 + 13 = 30

                                      Sum = 30

Since, the sum of frequency is even. So that the median is ,

                    [tex]\frac{\frac{n}{2} th +(\frac{n}{2} +1)th}{2} =\frac{15th +16th}{2}[/tex]

From observing table, 15th and 16th term lies in cumulative frequency of 17.

Thus, the class interval 20 <h < 30  contains the median.

Learn more about the class interval here:

https://brainly.com/question/7587748

Answer:

1/2 litros es igual a la capacidad que le pidió su mamá.

Step-by-step explanation:

Para encontrar la respuesta debes escribir 0.5 como fracción. Para hacerlo, el numerador es el número original sin el punto decimal y para definir el denominador debes determinar cuántos digitos decimales tienes. En este caso, el número tiene un dígito decimal, por lo cual el denominador es 10. De acuerdo a esto:

0.5 se escribiría como [tex]\frac{5}{10}[/tex] y esta fracción se puede simplificar porque los dos números son divisibles entre 5:

5/5= 1

10/5= 2

Por esto, 0.5= [tex]\frac{1}{2}[/tex]

Esto significa que 1/2 litros es igual a la capacidad que le pidió su mama.

Answer:

w = -7z/2

Step-by-step explanation:

We need to solve for w in terms of z.

The equation given is:

5w + 9z = 2z + 3w

Collect like terms:

5w - 3w = 2z - 9z

2w = -7z

w = -7z/2

Answer:

option A (-7/2z)

Step-by-step explanation:

Answer:

a. 2.5  

b. 2.333

c. 2.85

Step-by-step explanation:

A) 1. subtract -x on both sides              2. to get 3x-1/2=7  

3. Add 1/2 on both sides                    4. to get 3x=7.5    

5. divide 3 on both sides                   6. To get... x=2.5

B)1. Same process.                               2. x+2=13/3        

3. x=13/3-2                                         4. x= 2.33(repeating)

C) 1. same process.                           2. 2x-x/3=3+7/4

3. 2x-x/3=4.75                                  4. Isolate -x/3  

5.-x/3=4.75-2x                                    6. multiply both sides by 3          

7. -x=14.25-6x                                      8. 5x=14.25

9. x= 2.85

* remember to distribute the 3 to each variable.

Answer:

8 + (5W)/ 4

Step-by-step explanation:

Plug in 2 for x

2 * 2 * 2 + (5W)/(2 + 2)

8 + (5W)/ 4

Answer:

9 is the greater x and 2 is the lesser x

Step-by-step explanation:

I really don't know how to explain without simply writing it out for you, which I really can't do. But there's the answer lol

Answer:

x = 2, x = 9

Step-by-step explanation:

Given

x² - 11x + 18 = 0

Consider the factors of the constant term (+ 18) which sum to give the coefficient of the x- term (- 11)

The factors are - 9 and - 2 , since

- 9 × - 2 = + 18 and - 9 - 2 = - 11 , thus

(x - 9)(x - 2) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 2 = 0 ⇒ x = 2 ← lesser value

x - 9 = 0 ⇒ x = 9 ← greater value

Answer:

5x+30

Step-by-step explanation:

simply add each side together:

(x+13)+(3x+2)+8+2+(x+5)

=5x+30

Answer:

The 99th tower contains 9900 blocks.

Step-by-step explanation:

From the question given, we were told that the nth tower is formed by stacking n blocks on top of an n times n square of blocks. This implies that the number of blocks in n tower will be:

n + n²

Now let us use the diagram to validate the idea.

Tower 1:

n = 1

Number of blocks = 1 + 1² = 2

Tower 2:

Number of blocks = 2 + 2² = 6

Tower 3:

Number of blocks = 3 + 3² = 12

Using same idea, we can obtain the number of blocks in the 99th tower as follow:

Tower 99:

n = 99

Number of blocks = 99 + 99² = 9900

Therefore, the 99th tower contains 9900 blocks.

Answer:

A≈113.1in²

Step-by-step explanation:

Radius: 6in

Solved for area

Shape: Circle

Formula: A=πr2

1: Use the formula πr (r) to calculate the the area.

2: We are looking for the area.

3: 6 inches for radius to find the area

Answer: A≈113.1in²

Hope this helps.

Ani will put this in a translator

Step-by-step explanation:

Answer:

No, if 4 teachers chose 24 students from 1 class to go then the teachers will not be 25% of the passengers.

Step-by-step explanation:

Given: If 4 teachers chose 24 students from 1 class to go then the teachers will be 25% of the passengers.

To find: if the given statement is correct or not

Solution:

Total number of teachers = 4

Total number of students = 24

Total number of passengers = Total number of teachers + Total number of students = 4 + 24 = 28

Here,

25% of Total number of passengers = [tex]\frac{25}{100}(28)=7\neq 4[/tex]

So, if 4 teachers chose 24 students from 1 class to go then the teachers will not be 25% of the passengers.

Answer:

8

Step-by-step explanation:

Expression:

(-B)2

Let's substitute the value of B into this expression:

B = -4

(-B)2

[-(-4)]2

Notice how there are two negative signs int this expression:

[-(-4)]2

Well, there is an invisible 1 behind the first negative sign.

[-(-4)]2

[-1(-4)]2

All we have to do now is multiply:

[-1(-4)]2

(4)2

(4)2

= 8

Therefore, the value of the expression is 8.

Answer:

no solutions

Step-by-step explanation:

−2(x−7)+3(x+5)=x+9

Distribute

-2x +14 +3x +15 = x+9

Combine like terms

x + 29 = x+9

Subtract x from each side

x+29 -x = x+9-x

29 = 9

This is never true so there are no solutions

Answer:

It is wrong Problem

Step-by-step explanation:

-2x+14+3x+15=x+9

x+29=x+9

????

Answer:

Step-by-step explanation:

Answer:y=x+8x+15

Step-by-step explanation:

Answer:

1=0.70  2=0.25  3=-0.30  4=0.125  5=0.233333333 6=0.636363636 7=-0.6

Step-by-step explanation:

Calculator and anything over 10, just move the decimal back one space!

Step-by-step explanation:

X × 3 + 4 = 22

X × 3 = 22 - 4

X × 3 = 18

X = 18 /3

X = 6

Answer:

about 30.26

Step-by-step explanation:

tan-1 7/12 = 30.26

Answer:

Average

Step-by-step explanation:

If a and b are the lengths of the bases, then a+b/2 is the length of the midsegment of the trapezoid.

Answer:

11) D, 12) D

Step-by-step explanation:

if you do the math it works

Answer:

(B) Write Negative 3 and one-third as Negative StartFraction 10 over 3 EndFraction, and find the reciprocal of StartFraction 4 over 9 EndFraction as StartFraction 9 over 4 EndFraction. Then, rewrite Negative 3 and one-third divided by StartFraction 4 over 9 EndFraction as Negative StartFraction 10 over 3 EndFraction times StartFraction 9 over 4 EndFraction. The quotient is Negative 7 and StartFraction 6 over 12 EndFraction = Negative 7 and one-half.

Step-by-step explanation:

To find the quotient of the division:

[tex]-3\dfrac13 \div \dfrac49[/tex]

Step 1: [tex]\text{Write}$ $ -3\dfrac13$ as $ -\dfrac{10}{3}[/tex]

[tex]-3\dfrac13 \div \dfrac49 = -\dfrac{10}{3} \div \dfrac49[/tex]

Step 2: Find the reciprocal of  [tex]\dfrac94[/tex]

[tex]-\dfrac{10}{3} \times \dfrac94\\=-7\dfrac12[/tex]

Answer:

b

Step-by-step explanation:

Answer:

6 : 5

Step-by-step explanation:

Each set takes Krutika 72 minutes.

Each set takes Natasha 1 hour.

Let us convert that to minutes:

1 hour = 60 minutes

Therefore, expressing the times it takes Krutika and Natasha as a ratio:

72 : 60

Divide by 6

12 : 10

Divide by 2

6 : 5

The ratio is 6 : 5

Answer:

f = 6, g = 8

Step-by-step explanation:

The area of Δ ADE = 60 - 48 = 12 cm²

Thus

[tex]\frac{1}{2}[/tex] AD × 4 = 12, that is

2AD = 12 ( divide both sides by 2 )

AD = 6 = f

The area of ABCD = 48 cm² , thus

fg = 48 , that is

6g = 48 ( divide both sides by 6 )

g = 8

Thus f = 6 and  g = 8

Answer:64

Step-by-step explanation: because 2 multiplied by 2 is 4 four multiplied by 2 is eight as the pattern continues 32 multiplied by 2 is 64.

Answer:

2+2=4

4+4=8

8+8=16

16+16=32

32+32=64

Answer:Initiation fee is $400 while monthly fee is $10

Step-by-step explanation:

Let the initial fee be x which is fixed while the monthly fee be y

At the end of 5 months, 450 was paid

This means that;

x + 5y = 450 ••••••••(i)

At the end of 10 months, $500 was paid

Mathematically, this means that;

x + 10y = 500•••••••••••(ii)

now we solve both equations simultaneously to get the value of x and y

our equation ii can be rewritten as;

x + 5y + 5y = 500

we can now insert equation i directly into this

450 + 5y = 500

5y = 500-450

5y = 50

y = 50/5

y = $10

From x + 5y = 450

let’s insert the calculated value of y

x + 5(10) = 450

x + 50 = 450

x = 450-50

x = $400

Answer:

414 9/16 m³

[tex]414\frac{9}{16}m^{3}[/tex]

Step-by-step explanation:

The volume of a Rectangular prism is calculated as Length × Width × Height

From the attached diagram,we can see that

The length = 8 3/8 m

The width = 6 m

The height =8 1/4 m

Converting the mixed fraction to improper fraction in other to simplify it better

The length = 67/8 m

The height = 33/4 m

The volume of the rectangular prism =

67/8 m × 6m × 33/4m

= (13266/32)m³

= 6633/16 m³

= 414 9/16 m³

= [tex]414\frac{9}{16}m^{3}[/tex]