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3 years ago

When the distributive property is applied, which number completes the statement correctly?

Mathematics

1 answer:

maxonik [38]3 years ago

7 0

-7, because you distribute it to both -4 and 3.2, which means you're multiplying it to both.

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Explain if the combination of iron and copper sulfate is an example of a chemical reaction

zysi [14]

Answer:

Yes it is.

Step-by-step explanation:

When we mix Fe(iron) to CuSO⁴ (Copper sulphate), Iron removes copper from CuSO⁴ and makes FeSO⁴. This happens because iron is more reactive than copper. We cannot remove iron from this solution now until any stronger element is added.

6 0

3 years ago

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Sin (3x) dx = ? find the integral

AVprozaik [17]

Answer:

$\displaystyle \displaystyle \int {sin(3x)} \, dx = \frac{-cos(3x)}{3} + C$

General Formulas and Concepts:

Calculus

Antiderivatives - Integrals

Integration Constant C

Integration Property [Multiplied Constant]: $\displaystyle \int {cf(x)} \, dx = c \int {f(x)} \, dx$

Trig Integration: $\displaystyle \int{sin(x)} \, dx = -cos(x) + C$

U-Substitution

Step-by-step explanation:

Step 1: Define

$\displaystyle \int {sin(3x)} \, dx$

Step 2: Identify Substitution Variables

u = 3x

du = 3dx

Step 3: Integrate

[Integral] Rewrite: $\displaystyle \frac{1}{3}\int {3sin(3x)} \, dx$
[Integral] U-Substitution: $\displaystyle \frac{1}{3}\int {sin(u)} \, du$
[Integral] Trig Integration: $\displaystyle \frac{1}{3}[-cos(u)] + C$
[Expression] Multiply: $\displaystyle \frac{-cos(u)}{3} + C$
[Expression] Back-Substitute: $\displaystyle \frac{-cos(3x)}{3} + C$

8 0

3 years ago

29. A painter leans a ladder against the side of a

Lerok [7]

Answer:

16.3 feet (to the nearest tenth)

Step-by-step explanation:

Use Pythagoras theorem

Length = sqrt(3^2+16^2) = sqrt(9+256) = sqrt(265) = 16.3 ft.

5 0

4 years ago

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Which expression is NOT equivalent to 40 + 20

Ber [7]

The correct answer is:
* drumroll please*
4(10+16)

I hope that helps mi amor! ❤️

4 0

3 years ago

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Need help asap! The graphs below have the same shape. what is the equation of the red graph?

musickatia [10]

Answer:

B. $g(x) = x^{3} - 5$

Step-by-step explanation:

The graph of f(x) is the graph of g(x) translated 5 units downwards.

8 0

3 years ago