A student scores the following marks in 10 tests
3,7,x,7,12,9,10,4,2,5
If the mean mark is 6, calculate the value of x.

Answer:

x=4, y=-11. (4, -11).

Step-by-step explanation:

3x+2y=-10

5x+y=9

--------------

3x+2y=-10

-2(5x+y)=-2(9)

--------------------

3x+2y=-10

-10x-2y=-18

-----------------

-7x=-28

7x=28

x=28/7=4

5(4)+y=9

20+y=9

y=9-20=-11

Answer:

3x+5=3x+5

they are both the same line

Answer:

3x+5=3x+5

It is same line

Step-by-step explanation:

Answer:

10

+

g

−

9

>

12

Move the negative in front of the fraction.

10

−

g

9

>

12

Move all terms not containing  

g

to the right side of the inequality.

Tap for more steps...

−

g

9

>

2

Multiply each term in  

−

g

9

>

2

by  

−

1

Tap for more steps...

g

9

<

−

2

Multiply both sides of the equation by  

9

.

g

<

−

2

⋅

9

Multiply  

−

2

by  

9

.

g

<

−

18

The result can be shown in multiple forms.

Inequality Form:

g

<

−

18

Interval Notation:

(

−

∞

,

−

18

)

Step-by-step explanation:

Answer:

81

Step-by-step explanation:

3 to the power of 4, is 3 times 3 times 3 times 3

Answer:

O No solution

Step-by-step explanation:

2x +2 = 2(x+3)

Distributer the 2 on the right side.

2x + 2 = 2x + 6

Subtract 2x from both sides.

2 = 6

2 = 6 is a false statement.

Since we did two legal steps to solve the equation, and we ended up with a false statement, that means this equation has no solution.

Answer: O No solution

Answer:2x3

Step-by-step explanation:

Answer:

Your answer should be B or D.

Step-by-step explanation:

You have to find x. If the first side is 60 degrees and the other is 70 degrees, that means that the last side should be similar to that. yo can use a protractor if you have one, or you can estimate. now for the equation part. once you have the degree for the angle, you need to use the numbers to multiply to get the number. Multiply 8 by all of the numbers. Since the angle is acute, the answer has to be less than 90.

Answer: 4 adults are needed to accompany 32 students.

Step-by-step explanation:

Given: School requires 1 adult to accompany every 8 students on a field trip.

The number of adults are needed to accompany 32 students = [tex]\dfrac{32}{\text{Number of students accompanied by an adult}}[/tex]

[tex]=\dfrac{32}{8}\\\\=4[/tex]

Hence, 4 adults are needed to accompany 32 students.

Answer:

c and d

Step-by-step explanation:

a

Answer:

Step-by-step explanation:

13.98

The altitude of Carlita's kite to the nearest hundredth should be considered as the 13.98 yards when she uses 25 yards of string at an angle of elevation of 56.

Since she uses 25 yards of string at an angle of elevation of 56°

So we know that

cos 56 degrees = 0.5592

Now the altitude is

= (25) (0.5592)

= 13.98 yards

We basically multiplied these two so that the altitude should come.

hence, the first option is correct.

learn more about altitude here: https://brainly.com/question/3590651

Answer:

C. Hope I'm right :)

Step-by-step explanation:

Because 36.05 x 25.05 = 903.0525

Hope I Helped :)

Answer:

ok here is the answer, i didnt copy.

Step-by-step explanation:

the answer is c because search it lol

Answer:

3

Step-by-step explanation:

(6-3) / (2-1) = 3/1 = 3

Answer:

1/3x-5

Step-by-step explanation:

simplify by combining like terms

2/3x - 1/3x = 1/3x

-3 + -2 = -5

Answer:

1/3x - 5

Step-by-step explanation:

2/3x + (-3) + (-2) - 1/3x

2/3x - 1/3x + (-3) + (-2)

2/3x - 1/3x - 3 - 2

1/3x - 5

Answer:

by multiplying the variable k by 11

Step-by-step explanation:

[tex]\frac{k}{11}[/tex] × 11, this cancels out the 11 in the denominator, which isolates the variable

Answer:

Step-by-step explanation:

Divide both sides by 11

Answer:

657

Step-by-step explanation:

Step-by-step explanation:

similarities ratio of circumference = 2πr/2πR = r/R= 77/147= 11/21

plz mark my answer as brainlist plzzzz.hope this will be helpful to you.

Answer:

C

Step-by-step explanation:

Hope I was able to help!! :)

Answer:

10000

Step-by-step explanation:

to know if this answer is correct you have to know the rounding rules:

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 40.

If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. Example: 33 rounded to the nearest ten is 30.

Answer:

168.75

Step-by-step explanation:

so first you have to do 250 times .75. this is because if you times it by .25 it would be a 75% discount. then you have to do 187.5 times .90 to get your answer

Answer:

Step-by-step explanation:

.56 per pound

Answer:

t - 5

Step-by-step explanation:

t is how old Traci is. To find an age that is 5 years younger than her you would have to do t - 5.

Answer:

common difference = 31-18

common difference =13

from,

An=A1 +(n-1)d

A84=18+(84-1)13

A84=1097

Answer:

1097

Step-by-step explanation:

Common Difference:

d=a_2-a_1=(31)-(18)=13

d=a  

2

​  −a  

1

​  =(31)−(18)=13

a_n=a_1+(n-1)d

a  

n

​  =a  

1

​  +(n−1)d

\text{84th term:}

84th term:

a_{84}=18 + (84-1)(13)

a  

84

​  =18+(84−1)(13)

a_{84}=18 + (83)(13)

a  

84

=18+(83)(13)    a_{84}=1097      a  84

​ =1097

Step-by-step explanation:

If you need any explanation, we can communicate normally

Answer:

15x-y=27

Step-by-step explanation:

I think if im wrong my apologies haven't done that in a bit

The weight of Audrey will be 14 pounds based on the given equation formation.

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

Suppose the weight of Asher is x then according to the given question,

x = 3w - 15

And, x = 27

27 = 3w - 15

3w = 42

w = 14 pounds

Hence "Weight of Audrey will be 14 pounds based on the given equation formation".

For more about the equation,

https://brainly.com/question/10413253

#SPJ5

Answer:

Step-by-step explanation:

N⁶ · n⁵ · n⁴ ÷ n³ · n² ÷ n

n¹¹ · n⁴ ÷ n³ · n² ÷ n

n¹⁵ ÷ n³ · n² ÷ n

n⁵ · n² ÷ n

n¹⁰ ÷ n

n⁹

Answer:

1

Step-by-step explanation:

because u didnt have 1 plus its counting down on the numbers so i think its 1

Answer:

27

Step-by-step explanation:

 add 5+5+7+6+4