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4 years ago

Can distributive property be used to rewrite 6 x (10 - 5)?

Mathematics

2 answers:

kirza4 [7]4 years ago

8 0

Answer:

Yes

Step-by-step explanation:

6(10 - 5)

Can be written as

6(10) - 6(5)

Both simplify to 30

Luden [163]4 years ago

6 0

Answer:

Step-by-step explanation:

6(10-5)=60-30=30

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4 years ago

If y varies directly as x and x=2 when y=−4, find y when x=−6.

kakasveta [241]

Answer:

Equation: x × -2 = y

Solution: y = 12

Step-by-step explanation:

if (x = 2) is (y = -4) then (x = 1) is (y = -2) so if (x = -6) is (y = 12) if we follow the equation [x × -2 = y] which was found using the first set of variables and dividing each by 2.

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3 years ago

What is the justification for each step in solving the inequality?

Fed [463]

Step-by-step explanation:

$3x+\frac{5}{8}\geq 4x-\frac{1}{2}$

Subtract 5/8 on both sides

To subtract 5/8 we make the denominators same

$3x\geq 4x-\frac{1*4}{2*4}-\frac{5}{8}$

Addition or Subtraction property of order is used

$3x\geq 4x-\frac{9}{8}$

Subtract 4x on both sides

Addition or Subtraction property of order is used

$-x\geq -\frac{9}{8}$

Now divide both sides by -1

Multiplication or Division property of order is used

$\frac{-x}{-1} \geq \frac{-\frac{9}{8}}{-1}$

Multiplication or Division property of order is used

$x\leq \frac{9}{8}$

5 0

4 years ago

If f(x)= 3x^2 + 3x^1/2 +3x what is the value of f(-9)

Dahasolnce [82]

Answer:

216 + 9i

Step-by-step explanation:

Given: f(x) = 3x² + 3 $x^{1/2}$ + 3x

When x = -9, f(x) equals to;

3(-9)² + 3(-9 $)^{1/2}$ + 3(-9)

243 + 3(3i) - 27

243 + 9i - 27

216 + 9i

4 0

3 years ago

A sound wave has a frequency of 627 hz and a wavelength of 3.25 m. what is the speed of the wave?

Dovator [93]

Answer:

2037.75m/s

Step-by-step explanation:

To calculate the speed of a wave, you need to multiply the wavelength by the frequency. In this case, 627*3.25=2037.75m/s. Hope this helps!

8 0

3 years ago