Question 7-9. If you don’t know 7 or 8 could you please just answer 9.

Answer:

320

Step-by-step explanation:

2(-7)²-8(-7)(4)-√4=

98-(-224)-2=

98+224-2=

322-2=

320

Answer:

The greatest number of packets the teacher can make with no items left over is 23.

Step-by-step explanation:

Total number of crayons = 92

Total number of sheets of paper = 23

To find the greatest number of packets the teacher can make with no items left over, find Highest Common Factor (H.C.F) of 92 and 23

92 = [tex]2^2[/tex] × 23

23 = 23

So,

H.C.F(92,23) = 23

Therefore, the greatest number of packets the teacher can make with no items left over is 23.

Answer:

328

Step-by-step explanation:

[tex]\frac{a}{1-r}[/tex] is the equation for the sum of an infinite geometric series, where [tex]a[/tex] is the first term of the infinite geometric series, and r is the common ratio between the terms. Here, we can find the common ratio between any consecutive terms. [tex]\frac{209.92}{262.4} = \frac{4}{5}[/tex]

Therefore, [tex]\frac{a}{1-\frac{4}{5}} = 1640[/tex].

This simplifies to [tex]5a = 1640[/tex]

Therefore, [tex]a = 328[/tex]

Answer:

.2 mph

Step-by-step explanation:

Answer:

P(x) = 35,900 + 2,800(x-1)

Step-by-step explanation:

P(x)

P(1) = $35,900

P(4) = $44,300

Difference in profits

P(4) - P(1)

= P(3)

= $44,300 - $35,900

= $8,400

Rate of change per year = $8,400 / 3

= $2,800 per year

The linear equation

P(x) = 35,900 + 2,800(x-1)

Where

x = number of years

The answer is 17/4 feel free to mark as brainliest:)

Step-by-step explanation:

To find an equation of a line in point slope form when given the slope and a point we use the formula

[tex]y - y_1 = m(x - x_1) [/tex]

where

m is the slope

( x1 , y1) is the point

From the question the point is (-3, -1) and slope 2

The equation is

Hope this helps you

Answer:

Step-by-step explanation:

We know that the  expression for the perimeter is given as

P=2l+2B

now given that the value of the width is =2x

length= 4x

and the breadth=y

P=4x+2y

let us multiply both the length and the width with 2x we have

P=2x(4x+2y)

P=8x^2+4xy

the answer is

D. 8x^2+4xy

Answer:

22.9

Explanation:

Answer:

The answer is Division property of equality

Step-by-step explanation:

Answer:

division property of equality

Step-by-step explanation:

Just took the test on edge

I think the answer is

22.5 meter

it is because 7.5 meter ×4=30m

so 7.5+7.5+7.5=22.5 m

Answer:

Option (4)

Step-by-step explanation:

Table for the points from the graph attached,

      x           y        [tex]x^{2}[/tex]            [tex]y^{2}[/tex]            xy

    2.2       1.8       4.84        3.24       3.96

    3.2       1.8       10.24       3.24       5.76

    3.6        3        12.96         9           10.8

    4.8       3.5      23.04      12.25      16.8

    5.2       6.2      27.04      38.44      32.24

    6.4       4.5      40.96      20.25     28.8

    7.5       7.8       56.25     60.84      58.5

    8.5       6.2      72.25      38.44      52.7

[tex]\sum x=41.4[/tex]

[tex]\sum y=34.8[/tex]

[tex]\sum x^2=247.58[/tex]

[tex]\sum y^2=185.7[/tex]

[tex]\sum xy=209.56[/tex]

n = 8

Formula for the correlation coefficient  [tex]r=\frac{n\sum xy-(\sum x)(\sum y)}{\sqrt{[{n\sum x^2-(\sum x)^2][n\sum y^2-(\sum y)^2]}}}[/tex]

[tex]r=\frac{8(209.56)-(41.4)(34.8)}{\sqrt{[{8(247.58)-(41.4)^2][8(185.7)-(34.8)^2]}}}[/tex]

r = [tex]\frac{1676.48-1440.72}{\sqrt{266.52\times 274.56} }[/tex]

r = [tex]\frac{235.76}{\sqrt{73175.73}}[/tex]

r = [tex]\frac{235.76}{270.51}[/tex]

r = 0.87

r ≈ 0.9

Therefore, Option (4) is the answer.

fourty four percent hope this helps !

Answer:

im pretty sure its C not great at math though

Step-by-step explanation:

Answer:

That is true not false dont get confused

Answer:

[tex]-5<x<2[/tex]

Step-by-step explanation:

We have the inequality:

[tex]|2x+3|<7[/tex]

Use the definition of absolute value:

[tex](2x+3)<7\text{ or } -(2x+3)<7[/tex]

Let's evaluate each case individually.

Case 1)

We have:

[tex]2x+3<7[/tex]

Subtract 3 from both sides:

[tex]2x<4[/tex]

Divide both sides by 2:

[tex]x<2\\[/tex]

Case 2)

We have:

[tex]-(2x+3)<7[/tex]

Divide both sides by -1. Since we're dividing by a negative, flip our sign:

[tex]2x+3<-7[/tex]

Subtract 3 from both sides:

[tex]2x<-10[/tex]

Divide both sides by 2:

[tex]x<-5[/tex]

So, our solutions are, from least to greatest:

[tex]\{x|-5, 2\}[/tex]

We can see that our inequality is a greater than.

Remember, when dealing with absolute value:

When our sign is greater than (or equal to), our solution is an "or" inequality with our solutions being all values less than our lesser solution or all values greater than our greater solution.

When our sign is less than (or equal to), our solution is an "and" inequality with our solution being between our two solutions.

Since our inequality is a less than, our solution is all the values between our lesser solution and our greater solution.

Our lesser solution is -5. Our greater solution is 2.

So, the solution to the inequality is all values between -5 and 2. As a compound inequality, this is:

[tex]-5<x<2[/tex]

And we're done!

Answer:0

Step-by-step explanation: because all of the friends will get 4 apples and 4x9 is 36

Answer:

7.  it's a or c

8. no solution

9. no solution

Answer:

 5y = -2x + 31

Step-by-step explanation:

Given equation:

      y = [tex]\frac{5}{2} x + 3[/tex]

Coordinate  = (-7,9)

Unknown:

Equation of the line perpendicular  = ?

Solution:

The slope - intercept format of a line is given as;

      y = mx + c

where y and x are the coordinates

           m is the slope

           c is the y-intercept

y = [tex]\frac{5}{2} x + 3[/tex]

 From the given equation; slope is [tex]\frac{5}{2}[/tex]

A line perpendicular will have a slope that is negative and the inverse of this;

      slope of perpendicular line  = [tex]-\frac{2}{5}[/tex]

Since y= 9 and x = -7;

  So;

            9 = [tex]\frac{-2}{5} x (-7)[/tex] + C

            9 = [tex]\frac{14}{5}[/tex] + C

           C  = 9 - [tex]\frac{14}{5}[/tex]   = [tex]\frac{31}{5}[/tex]

Now,

       y  =  [tex]-\frac{2}{5}[/tex]x +  [tex]\frac{31}{5}[/tex]

mulitply through by 5;

     5y = -2x + 31

Answer:

0.3 is a Rational Number

Step-by-step explanation:

Answer: I cant understand what you want think you could put it in English?

Step-by-step explanation:

Answer:

y = -3x - 11

Step-by-step explanation:

Use the given slope and point in the point-slope equation. Solving this will give us the y-intercept equation.

Point-slope formula: y - y = m(x - x)

Plug in the slope and point

y - (-5) = -3(x - (-2))

Subtracting negatives will make them positive. Multiply out the -3 to what is in the parentheses.

y + 5 = -3x - 6

Subtract the 5 from both sides

y = -3x - 11

The equation of the line is y = -3x - 11

Answer:

f(3) = 15. Correct: D)

Explanation:

Numeric Value of a Function

The value of a function f(x) when x = a is calculated by replacing the x for a. We have the function:

[tex]f(x)=x^2+5x-9[/tex]

It is required to find f(3), or the numeric value of f when x=3. Replace x for 3

[tex]f(3)=3^2+5(3)-9[/tex]

[tex]f(3)=9+15-9[/tex]

[tex]f(3)=15[/tex]

A) Incorrect. f(3) is not 7

B) Incorrect. f(3) is not 10

C) Incorrect. f(3) is not 9

D) Correct. f(3) =15 as found above.

Answer:

Step-by-step explanation:

a) Si se suman las probabilidades de venta, es decir:

Probabildad de vender 0 auto ( es decir que no vendió) = 0,19

Probabildad de vender 1 auto                                              = 0,38

Probabildad de vender 2 autos                                            = 0,29

Probabildad de vender 3 autos                                            =0,15

Da por resultado:  1,01

1,01 > 1  

Ninguna probabilidad puede ser mayor que

b) LLover y no llover son condiciones excluyentes en relación al evento, es decir en relación a lluvia cualquier día o llueve o no llueve de tal forma

que las dos situaciones conforman el universo completo y deben sumar 1. en este caso el error s que suman 0.92 cando deberían sumar 1

c) No existen probabilidades negativas ( en este caso señalan -0,25 como una probabilidad

d) La probabilidad de sacar una carta de corazones es 1/4 (correcta pues hay la misma cantidad de carta de las cuatro viras  tipo ( diamante, trebo, corazones y el otro).

La mitad de las cartas son negras, de tal modo que 1/2 es correcto valor para esta probabilidad.

La probabilidad de que sea corazones y negra s 1/4*1/2  = 1/8

Luego no hay error en esta aseveración