Will give correct answer brainlyist

Answer:

y is 31

Step-by-step explanation:

we need to substitute first

x + y = 10

x= -21 so...

-21 + y = 10

now we need to add 21 on both sides of the equation, we are adding because  21 because we want that 21 gone, and it's the oppisite of subtracting

-21 + 21 + y = 10 + 21

0 + y = 10 + 21

y= 31

Check:

x+y=10

-21 + 31= 10

10 = 10 correct!

Hope this helped!

Answer:

I think the answer is 15/28

Step-by-step explanation:

Multiple: 3/4* 5/7 = 3 · 5  4 · 7 = 15/28

Answer: 21/20

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Answer:

-1.9f-18

Step-by-step explanation:

Evaluate like terms. (0.4f-2.3f) & (-13-5)

-2.3f+0.4f-13-5 = -1.9f-18

Answer:

The population mean

Step-by-step explanation:

Sample Mean is the mean of of the selected samples while the population Mean is the mean of all the population. The mean of the sampling distribution of the sample mean is equal to the mean of the original distribution (that is the sample mean is equal to the population mean).

The mean of the sample means is always approximately the same as the population mean

Answer:

Between 2.5 and 3.5, you have 2.56, 3.2376, and 3.001

Step-by-step explanation:

THE PROCESS:

If you wish to find 3 decimals that are in between 2 other decimals, first select 2 decimals that have some distance between them (one being larger in value than the other).

The number of decimals found between them will depend on the magnitude of the difference between the initial 2 decimals.

You can then pick out 3 or more decimals between these 2 numbers.

THE EXAMPLE:

2.5 and 3.5

The difference between these two values is 1. Many decimals can be found within this single unit.

2.56 is a decimal, 3.2376 is another decimal, 3.001 is a decimal too.

All these decimals fall between 2.5 and 3.5 above.

You should find many more decimals just between these two numbers.

Once the value of the decimal is greater than 2.5 and less than 3.5, it falls within this range.

It could be a number in one decimal place, a number in two decimal places, a number in three decimal places, and so on.

Step-by-step explanation:

2 Triangles are congrant So AB = DE

so,5 X +2 = 8X _10

3x = 12

X=4 ⇒....1

FE = BC

so,3y -7 = 8

3 y = 15

y= 5 ⇒ . ... 2

Answer:

i am pretty sure the answer is c

Answer:

11

Step-by-step explanation:

7/8 divided by 1/8 = 7 & 2^2 = 4. Simplified, you would have 7 + 4, or 11

9514 1404 393

Answer:

  x = √66

Step-by-step explanation:

In a geometry like this, the right triangles are all similar. Then the length of the long side to the hypotenuse is ...

  6/x = x/(6+5)

  6·11 = x²

  x = √66

_____

Additional comment

The relation g=√(ab) gives the geometric mean (g) of the two numbers 'a' and 'b'. In this geometry, there are three geometric mean relationships.

  long side = geometric mean(long segment, hypotenuse) . . . x = √(6·11)

  short side = geometric mean(short segment, hypotenuse) . . . y = √(5·11)

  altitude = geometric mean(long segment, short segment) . . . BD = √(6·5)

Answer:

2d-5

Step-by-step explanation:

Take out or divide everything in the expression by -4

So, (-8d+20) ÷ -4 = 2d-5

To check your answer, multiply:

-4 × (2d-5) = -8d+20

The linear expression in one variable -8d + 20 can be written as -4(2d - 5) after factoring -4 from it.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

It is given that:

The linear expression in one variable is:

= -8d + 20

Here d is the variable

Taking common as - 4 from the linear expression:

= -4(2d - 5)

Thus, the linear expression in one variable -8d + 20 can be written as -4(2d - 5) after factoring -4 from it.

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Answer:

22

Step-by-step explanation:

(6x4)-2

multiply the number of vans by the number of player in each van which equals 24 then subtract the 2 goal keepers which equals 22.

Answer:maintenance

Step-by-step explanation:is the correct answer

Oil change is considered to be a part of routine maintenance.

Technically speaking, maintenance in industrial, commercial, and residential installations refers to functional inspections, servicing, repairing, or replacing necessary devices, equipment, machinery, building infrastructure, and supporting utilities.

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Answer:

10%

Step-by-step explanation:

Since the question is not complete, I will be solving for probability of 3 9s

To solve this, we would be using the principle of combination, and thus

A deck of 52 hours has 4 nines, the probability that it contains at least 3 9s is mathematically represented by the equation.

P ( x ≥ 3 ) = ( 48 C 10 · 4 C 3 ) / ( 52 C 13 ) + ( 48 C 9 · 4 C 4 ) / ( 52 C 13 )

Remember I told us were going to be using the principle of combination. Well then

nCr = n!/r!(n - r)!

Now, applying the above stated formula to the equation, we have

48C10 = 48!/10!(38!)

4C3 = 4!/3!(1!)

52C13 = 52!/13!(39!)

48C9 = 48!/9!(39!)

4C4 = 4!/4!(0!)

Solving for each independently, we find that

= 0.0412 + 0.588 = 0.1

Answer:

6.5

Step-by-step explanation:

Answer:

1/ab^5 is your answer

Step-by-step explanation:

Answer:

[tex]\frac{1}{b^2}[/tex]

Step-by-step explanation:

Use the laws of exponents to find an equivalent value of b^-2.

The negative law of exponents states that a number with a negative exponents is equal to the reciprocal of that number to the positive exponent.

Basically:

[tex]a^-1 = \frac{1}{a^1}[/tex]

Using this law, you can then simplify b^-2. The reciprocal of b^-2 is 1/b^-2, and by the negative law of exponents, b^-2 changes to a positive exponent:

[tex]b^-2 = \frac{1}{b^2}[/tex]

Answer:

Step-by-step explanation:

the line's equation would be

y = 1/3x -6

so just graph a line using this equation

hope this helps <3

Answer:

x = - 3

Step-by-step explanation:

[tex]9(x + 2) = x - 6 \\ \\ 9x + 18 = x - 6 \\ \\ 9x - x = - 6 - 18 \\ \\ 8x = - 24 \\ \\ x = \frac{ - 24}{8} \\ \\ x = - 3[/tex]

Answer:

X=-3

Step-by-step explanation:

Hope this helps

It has the steps too

Answer:

Division property of equality

Step-by-step explanation:

to find n you would have to divide 16 by 8 which gives you 2

Answer:

42 tickets.

Step-by-step explanation:

To make a profit, the PTA will need to earn at least $251, because it spent $250 on the dance. so we can divide 251/6 = 41 remainder 5, which means we need to sell 42 tickets.

Answer:

The PTA must sell 42 tickets to make a profit.

Step-by-step explanation:

To solve this problem, we will have to construct an inequality in which $250 is less than our solution.

Let [tex]s[/tex] = student tickets

Since each student ticket is priced at $6.00, the money raised by the student tickets can be represented by the expression:

[tex]6s[/tex]

Since it will cost the PTA $250.00 for the dance, the profit will have to be equal to anything greater than $250.00.

Set up your inequality:

[tex]250<6s[/tex]

Divide both sides of the inequality by the coefficient of [tex]s[/tex], which is [tex]6[/tex]:

[tex]41.7=s[/tex]

As you can see, we are left with a decimal, but we will have to round to the nearest whole number as the tickets can only be represented as whole numbers:

[tex]42=s[/tex]

Therefore, the PTA must sell 42 tickets in order to make a profit.

-

You can check your work by substituting the solved value for the tickets into the inequality:

[tex]250<6s[/tex]

[tex]250<6(42)[/tex]

[tex]250<252[/tex]

And since $252 is greater than $250 (represents a $2 profit), our solution is correct.

Answer:

Step-by-step explanation:

I=PRT/100

I=3000*5.4*6                                                                                                                            

       100

97200/100=972.

I=$972

Answer:

44.958

Step-by-step explanation:

Answer:

Y= -1.5x - 3

Step-by-step explanation:

Answer:

0 zero

Step-by-step explanation:

anything multiplied by 0 is zero

Answer:

Total children = 52

Step-by-step explanation:

The question says that "The ratio of boys to girls in the school play is 5 to 8. There are 32 girls participating in the play. How many children participate in the school play? "

Let there are 5x boys and 8x girls in a school play.

Total no of girls participating in the play = 32

ATQ,

8x = 32

x = 4

Boys = 5x

= 5(4)

= 20

Total children = boys + girls

= 20 + 32

= 52

Hence, there are 52 children participating in the school play.

The equivalent expression of [tex]\frac{5}{m}-\frac{m+8}{m^{2} - 4m}[/tex] is [tex]\frac{4(m-7)}{m(m-4)}[/tex]

The expression can be simplified as follows:

[tex]\frac{5}{m}-\frac{m+8}{m^{2} - 4m}[/tex]

[tex]\frac{5}{m}-\frac{m+8}{m^{2} - 4m} = \frac{5(m^{2} - 4m)-m(m+8)}{m(m^{2} - 4m)}[/tex]

Therefore,

[tex]\frac{5(m^{2} - 4m)-m(m+8)}{m(m^{2} - 4m)}=\frac{5m^{2} - 20m-m^{2}-8m}{m(m^{2}-4m )}[/tex]

Simplifying further,

[tex]\frac{5m^{2} - 20m-m^{2}-8m}{m(m^{2}-4m )}=\frac{5m^{2}-m^{2}-20m-8m }{m(m^{2}-4m )}[/tex]

[tex]\frac{5m^{2}-m^{2}-20m-8m }{m(m^{2}-4m )} = \frac{4m^{2} -28m}{m(m^{2}-4m)}[/tex]

[tex]\frac{4m^{2} -28m}{m(m^{2}-4m)} = \frac{4m(m-7)}{m^{2}(m-4) }[/tex]

Finally,

[tex]\frac{4m(m-7)}{m^{2}(m-4) }=\frac{4(m-7)}{m(m-4)}[/tex]

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