HELP PLS PLS PLS PLS (6th GRADE HOMEWORK)

24 is 2.5 standard deviations away from the mean.

Now it given that,

mean = 18

standard deviation = 4

value = 24

Let x be the standard deviation away from the mean.

Since we know that,

Mean + Standard deviation * x = Value

Therefore putting the value we get,

18 +  4x = 24

Subtracting 18 both the side,

or, 4x = 24 -18

or, 4x = 6

Dividing by 4 both the side we get,

or, x = 6/4

or, x = 2.25

Hence,24 is 2.5 standard deviations away from the mean.

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Answer:

The answer is D

Step-by-step explanation:

The solution would be like this for this specific problem:

Cost of the computer:

i = 0.117 / 12 

i = 0.00975 

= monthly payment 

= (i * P * (1 + i)^n) / ((1 + i)^n - 1) 

= (0.00975 * $1433 * (1 + 0.00975)^30) / ((1 + 0.00975)^30 - 1) 

= $55.32 

Electricity cost:

= $0.79 * 365.25 * 7 

= $2019.83 

Electricity Percentage: 

= $2019.83 / ($2019.83 + $1659.60) 

= 54.89% 

Electricity: 

= ($0.79 * 365 * 5) + ($0.79 * 366 * 2) 

= $2020.03 

Electricity Percentage: 

= $2020.03 / ($2020.03 + $1659.60) 

= 54.898%

In total, the electricity made up 54.898% of the lifetime cost of the computer.

Answer:

Around 16.73 feet

Step-by-step explanation:

The sine of an angle is the length of the opposite side divided by the length of the hypotenuse. Therefore:

[tex]\sin 42 = \dfrac{x}{25} \\\\x=25\cdot \sin 42\approx 16.73[/tex]

Hope this helps!

Answer:

the answer should be 7.875 I think?Hope this helps.

Step-by-step explanation:

Answer:

A,D,BC

Step-by-step explanation:

Answer:

Step-by-step explanation:

The graph represents the piecewise function:

f(x)=x^2 if x<2(if x is less than 2)  (the parabola was not transformed by any means and represents the parent function y=x^2)

f(x)=5 if 2≥x<4 (if x is greater than or equal to 2, but less than 4)(this is a horizontal line on y=5)

Answer:

THAT GUY SAID IT RIGHTD=

Step-by-step explanation:

Answer:

Step-by-step explanation:

(14/2)^2 = 7^2 = 49

the value of c is 49

Answer:

Answer:

Part A : y²(x + 2)(x + 4)

Part B: (x + 4) (x + 4)

Part C: (x + 4) (x - 4)

Step-by-step explanation:

Part A: Factor x²y²+ 6xy²+ 8y²

x²y²+ 6xy²+ 8y²

y² is very common across the quadratic equation , hence

= y² (x² + 6x + 8)

= (y²) (x² + 6x + 8)

= (y²) (x² + 2x +4x + 8)

= (y²) (x² + 2x)+(4x + 8)

= (y²) (x(x + 2)+ 4(x + 2))

= y²(x+2)(x+4)

Part B: Factor x² + 8x + 16

x² + 8x + 16

= x² + 4x + 4x + 16

= (x² + 4x) + (4x + 16)

= x( x + 4) + 4(x + 4)

= (x + 4) (x + 4)

Part C: Factor x² − 16

= x² − 16

= x² + 0x − 16

= x² + 4x - 4x - 16

= (x² + 4x) - (4x - 16)

= x (x + 4) - 4(x + 4)

= (x + 4) (x - 4)

0.89 expressed as a common fraction would be:

It cannot be reduced further.

Answer:

[tex] \frac{89}{100} [/tex]

Step-by-step explanation:

[tex]0.890[/tex]

This number has 3 decimal places

so,

[tex] \frac{890}{1000} [/tex]

Reduce it.

[tex] \frac{89}{100} [/tex]

Can't be reduce further

Answer:

B. (x, y) → (−x, y), (x, y) → (x + 1, y + 1)

Step-by-step explanation:

Explanation:-

Type of Transformation                       Change to co-ordinate point

Vertical Translation up 'd' units                  ( x, y) → (x , y +d)

Vertical Translation down 'd' units             ( x, y) → (x , y -d)

Horizontal translation left 'c' units              ( x, y) → (x-c , y )

Horizontal translation right 'c' units              ( x, y) → (x +c , y )

Reflection over x -axis                                    ( x, y) → (x  , -y )  

Reflection over y -axis                                    ( x, y) → (-x  , y )  

Given data

A triangle has vertices at B(−3, 0), C(2, −1), D(−1, 2).

a) see above transformation table

i) First  Reflection over y- axis

                 (x, y) → (−x, y)

                ( -3 , 0)  → (3, 0)

Next Horizontal translation right '1' units  and Vertical Translation up '1' units

 (x ,y)  → (x +1 , y+1)

         (3 +1 , 0+1)  

          (4 ,1)      

∴ (-3 ,0) →(4,1)        

b)

  i) First  Reflection over y- axis

                 (x, y) → (−x, y)

                ( 2 , -1)  → (-2, -1)

Next  Horizontal translation right '1' units  and Vertical Translation up '1' units

      (x ,y)  → (x +1 , y+1)

             (-2 +1 , -1+1)  

             (-1 ,0)      

        ∴ ( 2 , -1)  → (-1, 0)  

c)

   i) First  Reflection over y- axis

                (x, y) → (−x, y)

                ( -1 , 2)  → (1, 2)

next  Horizontal translation right '1' units  and Vertical Translation up '1' units

          (x ,y)  → (x +1 , y+1)

        (1, 2)      →  (1 +1 , 2+1)  

                       →     (2 ,3)      

        ∴ ( -1,2)  →  (2 ,3)      

   B(−3, 0), C(2, −1), D(−1, 2) is transformation would produce an image with vertices    B″(4, 1), C″(−1, 0), D″(2, 3)                                  

Answer:

X=5

Step-by-step explanation:

4x²=100

x2=100÷4

x²=25

√x²=√25

x=5

Answer:

Number of child tickets = 9

Number of adult tickets = 36

Number of senior tickets = 27

Step-by-step explanation:

Given:

The ratio of adult tickets to child tickets = 4:1

Ratio of adult  tickets to senior tickets = 4:3

Number of total tickets = 72

Find:

The number of each ticket.

Computation:

Ratio between Adult to senior to child = 4:3:1

So,

Number of child tickets = [1 / (4+3+1)]Total tickets

Number of child tickets = [1 / (8)]72

Number of child tickets = 9

Number of adult tickets = [4 / (4+3+1)]Total tickets

Number of adult tickets = 36

Number of senior tickets = [3 / (4+3+1)]Total tickets

Number of senior tickets = 27

Answer:

c ≅ 35.4 cm.

Step-by-step explanation:

To find the length of the Hypotenuse of a triangle, the formula  a² + b² = c² will need to be used. Therefore:

26² + 24² = c² (c is the hypotenuse)

1252 = c²

√1252 = c

c ≈35.38

Round to tenths place:

c ≅ 35.4 cm. This is the Hypotenuse of the triangle.

Answer: The expression equivalent to -2(4+3x) is D. -8-6x

Answer:

-8 -6x

Step-by-step explanation:

−2(4+3x)

Distribute

-2*4 -2*3x

-8 -6x

Answer:

[tex]y=-4\,x-4[/tex]   which agrees with answer "A" in the list of possible options

Step-by-step explanation:

From the fact that there is a steady rate of increase in the x and in the respective y values (notice that x increases in steps of 1 unit, and at the same time y values increase in steps of "-4" units) the data belongs to the equation of a line.

We can determine that equation using just two pairs of points, like for example (-1, 0) and (0, -4).

We first find the slope using the slope formula for the segment that joints any two points on the plane:

[tex]slope=\frac{y_2-y_1}{x_2-x_1} \\slope=\frac{-4-0}{0-(-1)}\\slope = -4[/tex]

we now write the slope-intercept general form of a line with slope "-4", and solve for the intercept by using the point (0,-4) which should be in the line:

[tex]y=m\.x+b\\y=-4\,x+b\\-4=-4\,(0)+b\\b=-4[/tex]

Therefore the equation for this points is:

[tex]y=-4\,x-4[/tex]

Answer:

Step-by-step explanation:

the answer is c

The statement must be true about parallelogram ABCD is BE ≅ DE option (C) BE ≅ DE is correct because the diagonals of a parallelogram bisect each other.

A parallelogram is a polygon with four sides, opposite sides of the parallelogram are parallel.

The parallelogram ABCD is shown in the figure.

A parallelogram is a type of quadrilateral,

The quadrilateral can be defined as the four-sided polygon in geometry having four edges and four corners.

The parallelogram has two diagonals, AC and BD.

From the property of Parallelogram,

The diagonals of a parallelogram bisect each other.

So, AC and BD bisect each other.

AE = ECBE = CE

The correct answer is BE ≅ DE.

Thus, the statement must be true about parallelogram ABCD is BE ≅ DE option (C) BE ≅ DE is correct because the diagonals of a parallelogram bisect each other.

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Answer:

I-xI=12

-x=12

-x=-12

x=-12 or -12.

{-12, 12}

Answer:

The abswer woudl be 6.4

Step-by-step explanation:

you would divide 4.9 by 2.6 and get 1.884615 and then multiply that by 3.4 to get 6.4

Answer:

Step-by-step explanation:

17 : i 12x^2(4x−3) ,

ii : 5x(x−3y) ,

iii: 5xy^2z(3x^2−5z^2)

18) since the two polynomial are equal then :

2x^3+ax^2+3x-5 = x^3+x^2-2x+a  same remainder x-2 then x=2

2(2)^3+a(2)^2+3(2)-5=(2)^3+(2)^2-2(2)+a     solve for a

-3a=9

a=-3

18 ) x^3+y^3 -125+15xy

       x^3+y^3-(5)^3-3(x)(y)(-5)   then factorize x^3+y^3

       (x+y)(x^2-xy+y^2)- (5)(5)^2-3(x)(y)(-5)   common factor x+y-5

        (x+y-5)(x^2-xy+y^2-5^2-3xy         given x+y=5

          5-5( x^2-xy+y^2-25-3xy) = 0

the value of the expression equal to zero

Answer:

4

Step-by-step explanation:

4 have same sides and sizes

Answer:

B

Step-by-step explanation:

Am equivalent expression would be 2(-3w+(-11))= -6w-22

Sorry for my first answer

Mark wishing brainliest

Answer:

B. 2(-3w+(-11))

Step-by-step explanation:

-3(2w+6)-4=

-6w-18-4=

-6w-22=

2(-3w+(-11))

Answer:

30

Step-by-step explanation:

180 = 90 + x + 20 + x + 10

90 = 2x + 30

x = 30

Answer:

£112 initial + £20= £ 132

Step-by-step explanation:

Initial amount= x

And he received £20, added to initial amount it total to £132

Lets verify the answer:

Answer:

27

Step-by-step explanation:

(57 ÷ 4_1 +57 _20) ÷2

(57÷3 +57 _20) ÷2

(19+57 _20)÷2

(76 _ 20)÷2

(56 ) ÷2

= 28

Mean is the average. Add the minutes together and divide by 10.

86 /10 = 8.6

The answer is c

Answer:

x≤-3      2 ≤x<7  

Step-by-step explanation:

(x^2+x-6) /(x-7) ≤0

Factor the numerator

(x+3)(x-2) / (x-7)≤0

Critical points are

X =-3  X =2  X=7

We need to check the values when

x≤3  -3 ≤ x≤2           2 ≤x<7   x>7  

(x cannot be 7 because then the denominator is zero)

and see when it is less than 0

Substitute a value in and see if factor is positive or negative

x≤-3

(negative)(negative) / (negative) =   negative

-3 ≤x≤2    

(positive)(negative) / (negative) = positive  this range does not work

      2 ≤x<7  

(positive)(positive) / (negative) = negative

x>7

(positive)(positive) / (positive)

Answer:

The second option is the correct answer.

Thank you.

I've answered as fast as I can to answer your question.Hope you understood it.

Pls mark my answer as brainliest and follow me.

Answer:

there is no square root for -1

because it is there only for natural numbers

not sure because i just learned but ik that there isn't any square root for -1

Find the distance between the two x values: -10 to -7 is 3 units, so add to the midpoint: -7 + 3 = -4

The x value is -4

Now do the same for y:

7 to -3 is 10 units

Because the midpoint is less than the end point subtract:

Y = -3 -10 = -13

Y = -13

The endpoint would be (-4, -13)

Answer:

D: 64 x^27 y^125

Step-by-step explanation:

You can use either a calc or your knowledge of cube roots. I will be using knowledge.

You can automatically rule out a and b as if you take the cube root of 12, no whole number comes out. You are left with c and d. Option D is correct because the cube root of 64 is a whole number (4), the cube root of 27 is a whole number (3), and the cube root of 125 is also a whole number(5).