Does anyone know this?

Step-by-step explanation:

i think it means that when negative tow crosses the equal sign, as in a calculation,it becomes positive

eg. -2 +z=0

z =2

Answer:

Negative two is equal to negative two

Step-by-step explanation:

Kinda confused as to why you do not understand that expression...

Answer:

8.1796

Step-by-step explanation:

2.86 x 2.86 = 8.1796

Answer:

r = 4.5%

Step-by-step explanation:

Formula:

I = Prt

r = I/(Pt)

Given:

I = 662.29

P = 4205

t = 3.5

Work:

r = I/(Pt)

r = 662.29/(4205 * 3.5)

r = 662.29/14717.5

r = 0.045

r = 4.5%

Answer:

Step-by-step explanation:

Answer:

x=-3, x=1

Step-by-step explanation:

Answer:

$1.85

Step-by-step explanation:

Answer:

1. E

2. D

3. C

4. B

5. E

6. E

7. E

8. E

9. D

Step-by-step explanation:

I hope this helps

Answer:

Brand C

Step-by-step explanation:

Brand A: 1.77/6=$0.30

Brand B: 3.75/12=$0.31

Brand C: 5.24/18=$0.29

Brand D: 7.10/24=$0.30

Based on the price per egg of each brand (calculated above), the best price per egg would be brand C.

Answer:

2

Step-by-step explanation:

It's 2 because as you can see in the botton 4/10 and 8/20, 4 x 2=8 and 10 x 2=20. It's like saying you're multiplying the same thing for the top and bottom of both fractions. So, the two fractions on the top with the juice is getting multiplied by 4.

Answer:

2

Step-by-step explanation:

24÷6=4

knowing this you then divide 8 by 4 to get the numerator

8÷4=2

Answer:

42

Step-by-step explanation:

17 + 25 = 42

Answer:

(a) [tex]Area = (\frac{x}{4})^2[/tex]

Step-by-step explanation:

The question is incomplete. (See comment for complete question).

From the completed question, we have:

[tex]Total\ base\ length = x[/tex]

[tex]n = 8[/tex] --- number of pyramids

Required

An expression for the area of the base

The total base length of the pyramid represents the perimeter of the base.

And since the base is a square, then the following relationship exist.

[tex]Total\ base\ length = 4L[/tex]

Where L represents the length of each side.

This gives

[tex]4L = x[/tex]

Make L the subject

[tex]L = \frac{x}{4}[/tex]

The area of the base is then calculated as:

[tex]Area = L^2[/tex]

[tex]Area = (\frac{x}{4})^2[/tex]

Answer:

A

Step-by-step explanation:

Answer: n squared - 1

Step-by-step explanation:

The relationship between the step number {n} and the total number of small squares in the pattern is -

f(n) = 2ⁿ - 1.

An expression in mathematics is a combination of terms both constants and variables.

Given is a pattern of small squares as described -

Step 1 has 0 squares.

Step 2 has 3 squares : 2 by 2 but missing the lower right square.

Step 3 has 8 squares : 3 by 3 but missing the lower right square.

We can write the general expression for step {n} as -

Step {n} will have : 2ⁿ - 1 squares with missing the lower right square.

or

f(n) = 2ⁿ - 1

Therefore, the relationship between the step number {n} and the total number of small squares in the pattern is -

f(n) = 2ⁿ - 1.

To solve more questions on expressions, visit the link below -

https://brainly.com/question/27911936

#SPJ2

Answer:

x=6   y=9

Step-by-step explanation:

Im sorry if it didn't help! But goodluck!!!!

Answer: 61.58

Step-by-step explanation:

C = 2 π r = 2 · π · 9.8

π = pi

radius times pi (3.14) times 2 (because two radius makes the diameter)

9.8 times 3.14 times 2 = 61.57522in

Now we round.. 61.58

:) I hope this helps!  

Answer:

7664025600

Step-by-step explanation:

I basically just multiplied first then added the sums. Also you can use a calculator to make sure ur answer is right.

Answer:

translation. A transformation in which a graph or geometric figure is picked up and moved to another location without any change in size or orientation is a translation.

Answer:

1) The store selling for 1.1 per 3 lbs

2) $6.24

Step-by-step explanation:

1)

1.1/3 = 0.37

0.78/2 = 0.39

0.37 is cheaper so it's a better deal

2)

[tex]\frac{0.78}{3} =\frac{x}{24} \\\\3x=18.72\\x=6.24[/tex]

Answer:

1.10 for 3 is the better deal.  It will cost $6.24 for the pencils.

Step-by-step explanation:

Do two separate problems but find how much it is for 1 carrot.  So the first is:$1.10 divided by 3 carrots = .366 or 37 cents per carrot.

The second one is: .78 divided by 2 carrots = .39 cents per carrot.

If you break 24 students into groups of 3, that would be 8 groups. 24 divided by 3 = 8.  

8 sets of 3 pencils is .78 x 8 = $6.24

Answer:

1) decrease

2) increase

3) increase

a) 10% circle decrease

b) split the bar into 10 even parts. shade in first square. ⬛⬜⬜⬜⬜⬜⬜⬜⬜⬜

workspace do $3.50×0.10=0.35 $3.50-0.35

c) discount in dallars: $0.35

d) final coat of notebook: $3.15

Answer:

C

Step-by-step explanation:

A 1 2-liter bottle for $0.89

1 liter = .89 /2 = $0.445

B 3 1-liter bottles for $1.50

1 liter = $1.50/3 = $0.50

C 24 0.5-liter bottles for $5.25

1 liter = 5.25 / 12  = $0.4375

D 36 0.25-liter bottles for $4.75

1 liter = $4.75 / 9  = $0.53

Give me brainllest

Answer:

C is the best buy

Step-by-step explanation:

0.89/2 = 0.445

3 * 1 litre bottles = 3 litres

1.50/3 = 0.5

24 * 0.5 litres = 12 litres

5.25/12 = 0.4375

36 * 0.25 liters = 9 liters

4.75/9 = 0.52777777

Answer:

Step-by-step explanation:

Let  n=2α⋅5β⋅m , where  gcd(m,10)=1 . Then, the decimal expansion of  1n  is of the form

0.a1…akak+1…ak+ℓ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯(1) ,

where  k=max{α,β}  and  ℓ  is the least positive integer for which  m∣(10ℓ−1) . In other words,  ℓ  is the order of  10  in the multiplicative group of units modulo  m . So  ℓ∣ϕ(m)  by Lagrange's theorem.

In particular, if  gcd(n,10)=1 , then  α=β=k=0 ,  m=n , and

1n=0.a1…aℓ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯(2)  

Therefore, we know that

117=0.a1…aℓ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯(3)  

Here  ℓ  is the least positive integer for which  17  divides  9…9ℓtimes , and we know that  ℓ  divides  ϕ(17)=16 .

Successively squaring  10  modulo  17  gives

102≡−2(mod17),104≡4(mod17),108≡−1(mod17),1016≡1(mod17) .

So  ℓ=16  in expansion  (3) .

In fact,

a1…a16×17=1016–1.  

a1…a8+a9…a16=108−1 .

The first fact has nothing to do with the denominator  n  being prime. The second fact has everything to do with  n  being prime, and was discovered by E. Midy in  1836 .

Answer: 17.62

Step-by-step explanation:

Answer:

5% of the birds are blue

Step-by-step explanation:

100×5/100

Answer:

volume of cube = side³

volume of cube =(4in)³

volume of cube =64 in³

Answer:

hi

Step-by-step explanation:

Answer:

i think true hehehehehehehhehehehehe

Answer:

True

Step-by-step explanation:

Some people think a long drought may have occurred. However this information is not proven.

Answer:

The total number of miles Beth plans to jog cant go over 12, and she has already jogged for 3 miles, then she needs to jog for another m miles. This can be written mathematically like: 3 + m < 12.

Step-by-step explanation:

Hope this help! :D

15% off........................................

Answer:

55 bricks

Step-by-step explanation:

First find the area of one brick by multiplying 10x6x4, which is 240 cm^3. Then divide that from 13,200 which gives you 55 bricks.

Answer:

55 bricks

Step-by-step explanation:

First, we know they used 13,200 cm^3 of concrete. cm^3 is a volume, so in order to find how many bricks can be made, we must find the volume of each brick. Multiply the dimensions of each brick. 10*6*4=240cm^3. Now, divide 13,200cm^3/240cm^3=55 bricks

Answer:

Kids

Step-by-step explanation:

Because 62 percent of the kids preferred pencil when only 43 percent of the adults preferred pencils.