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Agata [3.3K]
3 years ago
8

What is (3×10) ×8= ------ × (10×8) elementary 5th grade

Mathematics
2 answers:
ipn [44]3 years ago
8 0
Using the property (a\times b) \times c = a \times (b\times c), we know that 3 is the missing number.
Tamiku [17]3 years ago
4 0
This is an example of the commutative property of multiplication.

That property states: (a \times b) \times c = a \times (b \times c)

So using that property, we can figure out that 3 should be in the blank.
You might be interested in
A rectangle has a length that is 4 units longer than the width. If the width is increased by 7 units and the length increased by
Savatey [412]

Answer:

A = (x + 7)(x + 9)

Step-by-step explanation:

Let the width w = x

then length l = w + 4 = x + 4

Area =  length x width

        = x(x+4)

Then the the width is increased by 7 units and the length increased by 5 units.

w = x + 7

l = (x + 4) + 5 =x + 9

A = (x + 7)(x + 9)

5 0
3 years ago
Read 2 more answers
What are the domain and range of f(x) = 2|x -4|? <br> plz i'm in need
mafiozo [28]

Answer:

Domain: (-∞, ∞)

Range: [0, ∞)

Step-by-step explanation:

The domain represents what x can be. In this scenario, we do not have x as a denominator, and there is nothing limiting x, so its domain is (-∞, ∞)

The range represents what f(x) can be, Because |x-4| is in absolute value, the lowest |x-4| can be is 0, and as a result, the lowest value of 2|x-4| is 2*0=0. The maximum value of f(x) is ∞ as an absolute value does not limit the maximum, making the range [0, ∞)

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=5x%20-%2010%20%5Cleqslant%2020" id="TexFormula1" title="5x - 10 \leqslant 20" alt="5x - 10 \le
OlgaM077 [116]
The answer is x = 6
Explanation:
First, you must assume that 5x-10=20. Next, you add 10 to 20, which makes the equation 5x=30. Next, divide 30 by 5, which then makes the equation x=6. When you substitute 6 in the original equation, it works, because 5(6)-10 equals 20.
6 0
3 years ago
PLEASE HELP!? Not that hard.
kobusy [5.1K]
Y = 4x - 1

// Plug this in for variable y in equation [1]

[1] 20x - 5•(4x-1) = 5
[1] 0 = 0 => Infinitely many solutions
8 0
3 years ago
Read 2 more answers
Write the equation of the line in Point-Slope Form
katrin [286]

17.

The point-slope form:

y-y_1=m(x-x_1)

We have slope=m=8, and the point (-5, -3). Substitute:

y-(-3)=8(x-(-5))\\\\\boxed{y+3=8(x+5)}


18.

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (3, 4) and (15, 10). Substitute:

m=\dfrac{10-4}{15-3}=\dfrac{6}{12}=\dfrac{1}{2}

The point-slope form:

\boxed{y-4=\dfrac{1}{2}(x-3)}

or

\boxed{y-10=\dfrac{1}{2}(x-15)}

4 0
3 years ago
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