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3 years ago

Which property explains why these two expressions are equal?

1 answer:

7 0

Re-written, I believe the equation is:

(W+23)+5=W+(23+5)

With this, the parenthesis have nothing multiplying into it, so we can drop the parenthesis to get:

W+23+5=W+23+5
Which is the same thing.

So I'd assume it is the Associative property, because you are combining the like terms of 23 and 5.

Hope this helps!

You might be interested in

The surface area of a rectangular prism is 208 cm2. Two of the dimensions are 2cm and 10cm. Find the measure of the other dimens

aliina [53]

Answer:

7 cm

Step-by-step explanation:

SA = 208 cm^2

SA= 2*a*b + 2*a*c + 2*b*c

where:

a= first dimension = 2 cm

b= second dimension = 10 cm

c= third dimension

so we have:

208= 2*2*10 + 2*2*c + 2*10*c

208= 40 + 4c + 20c

208-40= 24c

168=24c

c =168/24

c = 7cm = third dimension

3 0

3 years ago

Does Y= -2/3x + 3 & Y=2/3x + 2 have unlimited solutions?

notsponge [240]

Answer:

x = 3/4

y = 2.5

Step-by-step explanation:

No there is just one.

Equate the ys

-2/3 x + 3 = 2/3 x + 2 Add 2/3 x to both sides

3 = 2/3 x + 2/3x + 2 Combine

3 = 4/3 x + 2 Subtract 2

3-2 = 4/3 x Multiply by 3

1 * 3 = 4x Divide by 4

3/4 = x

====================

y = 2/3 x + 2

y = 2/3 * 3/4 + 2

y = 6/12 + 2

y = 1/2 + 2

y = 2 1/2

y = 2.5

6 0

2 years ago

Translate the shape A four squares right and two squares down.

Kryger [21]

The answer is:
(1,4) into (5,2)
(3,1) into (7,-1)
(1,1) into (5,-1)

5 0

2 years ago

The size 4 soccer ball sean's team uses should weigh no more than 0.37 kilogram and no less than 0.31 kilogram a soccer bag has

SCORPION-xisa [38]

Answer:

the most they could weigh is .74 kilos and the least would be .62

Step-by-step explanation:

7 0

3 years ago

An object is placed 21 cm from a concave lens of focal length 25 cm. what is the magnification?

wariber [46]

The magnification is 0.54

Given,

The distance between object and concave lens, u = -21 cm

Focal length of the concave lens, f = -25 cm

Let m be the magnification.

m = v/u

Here v is the position of image.

We have to find v first.

By using lens equation we can determine v.

That is,

1/f = 1/v – 1/u

So,

- (1/25) = 1/v – (-1/21)

- (1/25) = 1/v + 1/21

1/v = - (1/25) – 1/21

1/v = (-25 – 21) / (21 x 25)

1/v = - (46/525)

Therefore v = - (525/46)

v = -11.41 cm

Now we have to find magnification, m.

m = v/u

= (-11.41) / (-21)

= 0.54

Here magnification is 0.54

Learn more about concave lens here: brainly.com/question/12944945

#SPJ4

6 0

2 years ago