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4 years ago

How is using mental math to add with decimals like using mental math to add whole numbers

1 answer:

8 0

Add them up just the same, then add the decimal point in the proper position; once you hit the hundreds position, it is a whole number. I.E. 300=.3

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Plz.. Help me.. True or false?

zimovet [89]

Answer:

$\boxed{\mathrm{False}}$

Step-by-step explanation:

$(p-q)^2$

$(p-q)(p-q)$

Use <em>FOIL</em> method.

$p^2-pq-pq +q^2$

$p^2-2pq +q^2$

6 0

3 years ago

A laundry basket contains socks in several different colors. black 70 white 26 red 4 What is the probability that a randomly sel

Gnom [1K]

Answer:

70/100

Step-by-step explanation:

You have 70 White socks

You have to add 70, 26, and 4.

When you add those, you get 100, making the answer 70/100

4 0

3 years ago

Read 2 more answers

At a concert, 20% of the audience members were teenagers. if the number of teenagers at a concert was 360, what was the total nu

Harlamova29_29 [7]

Answer:

The total number of audience members is 1800.

Step-by-step explanation:

In order to find this, we need to divide the number of teenagers by the percentage share.

360/.2 = 1800

7 0

4 years ago

The solids are similar. Find the surface area of the red solid.

alisha [4.7K]

Answer:

756

Step-by-step explanation:

The ratio of areas is the square of the scale factor.

First, we find the scale factor from the blue solid to the red solid.

scale factor = 6/4 = 3/2

The ratio of areas is the square of the scale factor:

ratio of areas = (3/2)^2 = 9/4

volume of red solid = volume of blue solid * ratio of areas

volume of red solid = 336 m^2 * 9/4 = 756 m^2

Answer: S = 756 m^2

8 0

3 years ago

3(x+4)=3(x)+3(4) distributive property

jok3333 [9.3K]

Answer:

3(x + 4) = 3(x) + 3(4)
3(x + 4) = 3x + 12
3x + 12 = 3x + 12

Subtract 12 from both sides
3x + 12 - 12 = 3x + 12 - 12

3x = 3x
3x - 3x = 3x - 3x
= 0

8 0

2 years ago