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3 years ago

Why can you multiply unlike terms but not add them?

1 answer:

4 0

When you’re adding unlike terms think of the term as a last name. You could never add two last names because that wouldn’t make sense. But with multiplying you don’t need to worry about the “last name”.

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Josh created a pattern by using tiles. Twenty tiles were blue. For the rest of the pattern he used equal numbers of red white ti

Ber [7]

Answer: The number of red tiles = 15.

Step-by-step explanation:

Let the number of red tiles be x, and the total tiles be y.

Since, the pattern he used equal numbers of red white tiles, therefore the number of white tiles = x

The number of blue tiles = 20

Forty percent of the pattern was made of blue tiles and 40%=0.40

Therefore,

$0.40y=20\\\Rightarrow\ y=\frac{20}{0.4}\\\Rightarrow\ y=50$

Now, the total number of tiles = $x+x+20=50$

$\Rightarrow\ 2x=50-20\\\Rigjhtarrow\ x=30\\\Rightarrow\ x=15$

The number of red tiles = 15.

3 0

3 years ago

PLEASE HELP DUE TODAY

Mars2501 [29]

Answer:

is it your homework?

Step-by-step explanation:

4 0

3 years ago

NEED HELP ASAP!!! WILL GIVE BRAINLIEST!!!

Olin [163]

Answer:

(6, 6)

Step-by-step explanation:

Each grid square is 2 units. 10 units up from point P is 5 grid squares up, or 3 grid squares above the x-axis. The x-coordinate remains the same (6), and the y-coordinate is the one labeling the 3rd line above the x-axis: 6.

The coordinates of point S are (6, 6).

5 0

3 years ago

Simplify the radical expression.. square root of 128

Vaselesa [24]

Hello,

first we have to descompose the number:

128 | 2
64 | 2
32 | 2
16 | 2
8 | 2
4 | 2
2 | 2
1

So:
$128= 2x2x2x2x2x2x2 \\ 128=2^{6} *2$

Therefore:
$\sqrt{128}= \sqrt{2^{6} *2}$

You must know these properties:

$\sqrt{a*b} = \sqrt{a} * \sqrt{b}\\ \\ \sqrt[b]{x^a}= x^{ \frac{a}{b}}$

then:

$\sqrt{2^{6} *2} \\ =\sqrt{2^{6}}*\sqrt{2} \\ =2^{ \frac{6}{2}}*\sqrt{2} \\ =2^3*\sqrt{2} \\ \boxed{=8*\sqrt{2}}$

6 0

4 years ago

Trying to help daughter solve problem.<br>Where would you place the parentheses?<br>2x4+6-2+8/4=18

tiny-mole [99]

Here the order of operation is very important. I put few parenthesis to show you what is the correct result. First you have to multiply/divide, then u can add/subtract
$(2*4)+(6-2)+\frac{8}{4}=8-4+2=6$

5 0

4 years ago

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