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padilas [110]
3 years ago
10

Chin correctly translated the following phrase into an algebraic expression. “One-fifth less than the product of seven and a num

ber” which represents chin’s phrase?
Mathematics
2 answers:
Harrizon [31]3 years ago
6 0

<em>Answer:</em>

<h2>D is the answer on Edgen.</h2>

<em>Step-by-step explanation:</em>

7n - 1/5

kirill [66]3 years ago
3 0

Let's assume the number be x.

So, product of seven and a number can be written as 7*x.

Now the given statement is “One-fifth less than the product of seven and a number” which means we need to take out 1/5 from 7x. Hence, it can be converted into an algebraic expression as follows:

7x-\frac{1}{5}

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The correct answer of the given expression above would be the last option. We just solved this using the distributive property.
So: <span>(a - 3)(a - 5)
a^2 -3a -5a + 15
a^2 -8a + 15
Hope this is the answer that you are looking for. Have a great day!</span>
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2 years ago
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Natali [406]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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If a simple harmonic motion is described by x = 3 cos(πt), starting from t = 0 s, what is the first occurrence of a value of t f
poizon [28]

Answer:

The first occurence of t for which x = 0 is t = 0.5.

Step-by-step explanation:

The harmonic motion is described by the following equation.

x(t) = 3\cos{\pi t}

What is the first occurrence of a value of t for which x = 0?

This is t when x(t) = 0. So

x(t) = 3\cos{\pi t}

3\cos{\pi t} = 0

\cos{\pi t} = \frac{0}{3}

\cos{\pi t} = 0

The inverse of the cosine is the arcosine. So we apply the arcosine function to both sides of the equality.

\arccos{\cos{\pi t}} = \arccos{0}

\pi t = \frac{\pi}{2}

t = \frac{\pi}{2 \pi}

t = \frac{1}{2}

t = 0.5

The first occurence of t for which x = 0 is t = 0.5.

3 0
3 years ago
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vredina [299]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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