what is a rectangles area formula

Answer:

[tex]2a^{2} +4ab+2b^2[/tex]

Step-by-step explanation:

(a + b)(2a + 2b)

2a^(2) + 2ab + 2ab +2b^2

[tex]2a^{2} +4ab+2b^2[/tex]

Answer:

6.9

Explanation:

6 4/5 = 6.8 so 1 decimal point higher than that is 6.9 which is still smaller than 7

Answer:

6.9

Step-by-step explanation:

6 4/5 = 6.80

and 6.9 is the only thing between

Answer:

E. 50%

Step-by-step explanation:

The shaded regions in the bottom can be 'moved' to the top since those pieces are the same size and if you do that, they cover the entire top half

Is there any other information? We can't estimate the cost of a 7 minute call if we don't get the information for the amount of money/time. Please update the question fully, thank you!

Answer:

x=-2

Step-by-step explanation:

2x+1=(-3)

-1 on both sides

2x=-4

÷2 on both sides

x=-2

Hope this helps =]

Answer:

32

since 2^-2 is equal to 0.25, you divide 8 by 0.25 which is 32

Answer b=-2

Step-by-step explanation: Simplify  2^2 to 4 so 4−2b=8 then -2b=4 b=-4/2= b-2

Hope this helped :)

​  

Answer:

pretty sure it's 25° :))

Answer: 68%

Step-by-step explanation:

Empirical rule is basically using a bell curve along with mean and SD to find the center percentage. So take the mean right. 100 if you add 15 which is the SD you get 115 or 34.1% from 100 to 115. If you do the same thing but subtract this time 100-15=85 34.1% again from 85 to 100. So 85 to 115 is 34.1%+34.1%=68%

Answer:

c.

Step-by-step explanation:

Please note that the angle A and B are somewhat close to 45deg, so we expect AC and BC to be close in length.

We can drop answer a on that basis.

We can also drop abswer d on the basis that AC is longer than AB there and that cannot be the case in a right triangle.

We can verify that for both b and c the Pythagoras theorem holds, so we need to choose the answer that fits the angles A and B. Te can check the tan of the angle to get the ratio between BC and AC.

tan(48.8deg) ~= 1.1423

1.6/1.4 ~= 1.1429; close enough.

So we choose answer c.

Answer:

B

Step-by-step explanation:

It shows the value of the antique

Answer:a) $5.64  b)  21 ounces of tea leaves

Step-by-step explanation:

Step 1

5 ounces of tea leaves can be bought with  $2.35

1 ounce of tea can be bought with =$2.35/5 =$0.47

12 ounces at the same rate  can be bought with

=12 x $0.47 = $5.64

b) 5 ounces of tea leaves can be bought with  $2.35

? Ounces of tea leaves can be bought with $10

$2.35 =5 ounces of tea

$10 = ? ounces of tea

           = (10 x  5)/2.35

           =50/2.35

=21.27 rrounded to 21 ounces of tea leaves

Answer:

x= [tex]\frac{1}{1028} y[/tex]+[tex]\frac{-339}{514}[/tex]

Step-by-step explanation:

let's solve for x.

y=23x(45)−7x+678

step 1: flip the equation.

1028x+678=y

step 2: add -678 to both sides.

1028x+678+−678=y+−678

1028x=y−678

step 3: divide both sides by 1028.

1028x/1028=y-678/1028

x=1/028 y+-339/514

answer- x= [tex]\frac{1}{1028} y[/tex]+[tex]\frac{-339}{514}[/tex]

good luck :)

have a great day !!

Answer:

108 or 72

Step-by-step explanation:

:) cdhhyvfhjyvfyhgfvhghghhhjbh

do you have S s-n-a-p-c-h-a-t

Answer:

828 rs

Step- -step explanation:

pradeep sold the item for 60 rs less than the cost price

The cost price = amount lost + amount it was sold

60 + 660 = 720 rs

To determine the selling price that would yield a gain of 15%,

15/100 x 720 = 108

108 + 720 = 828 rs

Answer:

a And b same number but different in sign. for example-5+5=0

Answer:350 adult tickets

Step-by-step explanation:752-52=700. Because there were 52 MORE student tickets than adult we have to divide 700. 700÷2=350.

Answer:

4(5x−4y+8)

Step-by-step explanation:

20x−16y+32

Factor out 4.

4(5x−4y+8)

Answer:

4 ) reflexive property of congrunce

5 ) Definition of Equilateral Triangle

Step-by-step explanation:

4) the lines are equal to each other

5) if one triangle is equal to another triangle than they must be the same triangle

Answer

the ticket was 22 dollars

Step-by-step explanation:

Answer:

the answer for this question is D

Answer:

c rectangle I'm pretty sure

Answer:

Step-by-step explanation:

Sum = 20

Product = 5*20 = 100

Factors = 10 , 10   {10*10 = 100 ; 10+10 = 20}

5x² + 20x + 20 = 5x² + 10x + 10x + 10*2

= 5x(x + 2) + 10(x + 2)

= (x + 2)(5x + 10)

Answer:

Step-by-step explanation:

The point-slope form of the equation that describes the line with a slope of m that contains the point (x₀, y₀) is: y - y₀ = m(x - x₀)

m = - 3

(1, 2)  ⇒    x₀ = 1,  y₀ = 2

Therefore:

y - 2 = -3(x - 1)

Answer:

B

Step-by-step explanation:

B

Answer:

Cone

Step-by-step explanation:

A cone's cross sections are either a circle or a triangle

Answer:

Let hardcover book be x

Let paperback book be y

2x+3y=$118....Equation 1

3x+2y=$137.... Equation 2

Solve for x and y using simultaneous equation

Using elimination method

2x+3y=118......×3

3x+2y=137......×2

6x+9y=354

6x+4y=274

9y-4y=80

5y=80

y=80÷5=16

substituting y=16 into equation 1

2x+3(16)=118

2x+48=118

2x=70

x=70÷2=35

Therefore hardcover costs $35 each

paperback cover costs $16 each

Answer:

112.2857143 Or 112 with a remainder of 2

Step-by-step explanation:

 1 1 2

7 7 8 6

− 7    

 0 8  

−   7  

   1 6

 − 1 4

     2

Answer:

I believe the answer is D

Step-by-step explanation: