what is 40 inch squared into feet squared

Answer:

it is 2.5/3.5

Answer:

question 9

92/11 or 8.36

Step-by-step explanation:

angle on straight line is 180

:. 10x+1 + 12x-5 = 180

collect like terms

10x+12x = 180+5-1

22x = 184

divide both sides by the coefficient of x

22x/22 = 180/22

:. x = 180/22(to d lowest form= 92/11)

or 8.36

Answer:

1.27cm

Step-by-step explanation:

Volume(v) =100 cm

Radius(r) =5cm

Height(h) =?

Now,

Volume of cylinder (v) =¶r^2h

100 =22/7*5*5*h

100=78.57h

H=100/78.57

H=1.27cm

Height of cylinder is 1.27cm

Answer:

(13,2)

plss mark me brainliesttt

Answer:

marke me as brainly please

Since the area of B is 9 times the area of A, we know that the sides of B are √9= 3 times the length of the sides of A.

That's how.

There you go

I hope this help you

Answer:#1 is D

Step-by-step explanation:angles must equal 180 and yk that the angle under e is 39 so 180-39 =141

Answer:

Step-by-step explanation:

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

Answer:

v = [tex]\frac{fu}{u-f}[/tex]

Step-by-step explanation:

Given

[tex]\frac{1}{f}[/tex] = [tex]\frac{1}{v}[/tex] + [tex]\frac{1}{u}[/tex]

Multiply through by fuv to clear the fractions

uv = fu + fv ( subtract fv from both sides )

uv - fv = fu ← factor out v from each term on the left side

v(u - f) = fu ← divide both sides by (u - f)

v = [tex]\frac{fu}{u-f}[/tex]

Answer:

a) [tex] \frac{4}{3} [/tex]

b) -1

Step-by-step explanation:

[tex]\boxed{slope = \frac{y1 - y2}{x1 - x2} }[/tex]

where (x₁, y₁) is the first point and (x₂, y₂) is the second point

6a) Slope

[tex] = \frac{7 - 3}{4 - 1} [/tex]

[tex] = \frac{4}{ 3} [/tex]

6b) Slope

[tex] = \frac{6 - 5}{2 - 3} [/tex]

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

= -1

False.

It could be a plane, a line, or no intersection at all. But it can't be a point.

Answer:  x = 0; y = 2; z = 5

Step-by-step explanation:

x+2y+z=9

x-y+3z=13

2z=10

==

Start with the last equation:  2z = 10, therefore z = 5 [easy]

Let's rewrite the second equation with 1) z=5, and 2) rearrange to find x:

x-y+3z = 13

x - y +3*5 = 13

x = y-2

Now use the values for x [(y-2)] and y [5] in the first equation:

X+2y+z=9

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

3y +3 = 9

3y = 6

y = 2

Now that we have y [2] and z [5], let's use the first equation to solve for x:

x+2y+z=9

x + 4 + 5 = 9

x + 9 = 9

x = 0

====

Try the three values (x=0, y=2, and z=5) in any of the formulas.  The result should/will equal the number shown.

Answer:

Answer: c

Step-by-step explanation:

A. ❎

[tex]16 +( 4 \times {5}^{2} ) \\ = 16 + 100 \\ = 116[/tex]

B. ❎

[tex]16 +( 4 \times {5}^{2} ) \\ = 16 \times 100\\ = 116[/tex]

C. ✔

[tex]16 + (4 \times {5}^{2} ) \\ = 16 \times 100\\ = 116[/tex]

D. ❎

[tex]16 + (4 \times {5}^{2} ) \\ = 16 + (4 \times 25) \\ = 16 + 100 \\ = 116[/tex]

[tex]\{-7x-2y=14 \ \ /\cdot3\\\{6x+6y=18\\\\\{-21x-6y=42\\+\{6x+6y=18\\---------\\\\-15x=60 \ \ /:(-15)\\\\\huge\boxed{x=-4}\\\\6\cdot(-4)+6y=18\\\\-24+6y=18 \ \ /+24\\\\6y=42 \ \ /:6\\\\\huge\boxed{y=7}[/tex]

Answer:

Below

Step-by-step explanation:

Here is how to solve this by elimination

Divide both sides by 3

     -7x - 2y = 14

      2x + 2y = 6

Eliminate one variable by adding the equations

      -5x = 20

Divide both sides by -5

      x = -4

Sub in x to -7x -2y = 14

      -7x (-4) -2y = 14

                     y = 7

So, ( x, y ) --> ( - 4, 7 )

Hope this helps! Best of luck <3

Answer:

4.3L of the 40% solution and 5.7L of the 5% solution

Step-by-step explanation:

hope this helps

2(3x + 7) + (2x - 3) =

= 6x + 14 + 2x - 3 =

= 6x + 2x + 14 - 3 = 8x + 11 ← the end

Answer:

9.5

Step-by-step explanation:

9.5x9.5= 90.25 which is the closest you can get without going into further decimals

The control group in the experiment are the classes where the teacher does not greet the students

A control group in an experiment is made up of groups of people that do not receive the experimental treatment.

The purpose of a control group is to allow the researcher study one variable at a time.

Victor is conducting an experiment on if positively greeting children as they enter the classroom reduces problem behaviours.

The experimental treatment here is positively greeting the students.

The group that do not receive this experimental treatment are referred to as the control group.

At the end of the experiment, Victor would compare the behaviours of the students in the control group with the behaviour of those who were part of the experimental group to see if greeting reduced problem behaviours.

To learn more about the control groups, please check : https://brainly.com/question/17602354?referrer=searchResults

[tex]\\ \sf\longmapsto \left(\dfrac{3}{4}\right)^2\times \left(\dfrac{1}{4}\right)^{-2}[/tex]

[tex]\\ \sf\longmapsto \dfrac{3^2}{4^2}\times 4^2[/tex]

[tex]\\ \sf\longmapsto 3^2[/tex]

[tex]\\ \sf\longmapsto 9[/tex]

Answer:

I HOPE IT WILL HELP YOU....

Answer:

$22.33

Step-by-step explanation:

A 20% tip would be 0.20. Multiply the cost by 0.20 to get the tip amount or multiply the cost by 1.20 to get the total amount including tip.

subtotal --> $18.61

tip --> $3.72

18.61 x 0.20 = 3.72

total --> $22.33

Answer:

1 =647

2=223

3=236

4=490

5=3214

۔

Answer:3

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Let me know if I’m correct

hope this helps

[tex]\large\bf\red{ \longrightarrow} \rm \: \frac{x}{ - 9 \: \: \: } \: = \: 60 \\ [/tex]

[tex]\large\bf\red{ \longrightarrow} \rm \:x \: = \: - 9 \: \times \: 60[/tex]

[tex]\large\bf\red{ \longrightarrow} \rm \:x \: = \: - 540[/tex]

Answer:

y= 1/2x-6

Step-by-step explanation:

distribute the 1/2 to parentheses..

7=1/2x+1

..so 1/2x and 1

subtract the one from the seven to get 6

6=1/2x

divide by 1/2 and final answer is x=3

3=x

[tex](a+b)(a-b)=a^2-b^2\\\\(4+2i)(4-2i)=4^2-(2i)^2=\boxed{16-4i^2}[/tex]

Answer:

A

Step-by-step explanation:

We want to simplify the expression:

[tex](4 + 2i)(4- 2i)[/tex]

Notice that this is the difference of two squares. That is:

[tex](a +b)(a-b) = a^2 - b^2[/tex]

We can let a = 4 and b = 2i. Hence:

[tex](4+2i)(4-2i) = (4)^2 - (2i)^2[/tex]

Simplify:

[tex]= (16) - (4i^2) \\ \\ = 16 - (-4) \\ \\ = 20[/tex]

(Note that i² = -1.)

In conclusion, our answer is A.