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baherus [9]
2 years ago
15

How can you use expressions to find the percent of a number?

Mathematics
2 answers:
luda_lava [24]2 years ago
8 0

Answer:

See below

Step-by-step explanation:

<u>x% of y is found as:</u>

  • 1% of y ⇒ y*1/100 = 0.01y
  • x% of y ⇒ x*0.01y = 0.01xy

<u>So the answer is:</u>

  • 0.01xy
netineya [11]2 years ago
4 0

Answer:

Review how to find the percent of an amount to find the percent of an amount or of a whole we write

Step-by-step explanation:

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Jackson can lay 6000 ft² of tile in 3 h.
Juli2301 [7.4K]

Answer:

2000 ft^2/h

Step-by-step explanation: Because 6000 divided by 3 is 2000


4 0
3 years ago
Read 2 more answers
Exercise 2.4.2: Proving statements about rational numbers with direct proofs. About Prove each of the following statements using
IgorLugansk [536]

Answer:

See Explanation

Step-by-step explanation:

(a) Proof: Product of two rational numbers

Using direct proofs.

Let the two rational numbers be A and B.

Such that:

A = \frac{1}{2}

B = \frac{2}{3}

The product:

A * B = \frac{1}{2} * \frac{2}{3}

A * B = \frac{1}{1} * \frac{1}{3}

A * B = 1 * \frac{1}{3}

A * B = \frac{1}{3}

Proved, because 1/3 is rational

(b) Proof: Quotient of a rational number and a non-zero rational number

Using direct proofs.

Let the two rational numbers be A and B.

Such that:

A = \frac{1}{2}

B = \frac{2}{3}

The quotient:

A / B = \frac{1}{2} / \frac{2}{3}

Express as product

A / B = \frac{1}{2} / \frac{3}{2}

A / B = \frac{1*3}{2*2}

A / B = \frac{3}{4}

Proved, because 3/4 is rational

(c) x + y is rational (missing from the question)

Using direct proofs.

Let x and y be

Such that:

x = \frac{1}{2}

y = \frac{2}{3}

The sum:

x + y = \frac{1}{2} + \frac{2}{3}

Take LCM

x + y = \frac{3+4}{6}

x + y = \frac{7}{6}

Proved, because 7/6 is rational

<em>The above proof works for all values of A, B, x and y; as long as they are rational values</em>

8 0
3 years ago
1<br> 4<br> Joey enlarged a 3-inch by 5-inch photograph on a copy machine. He enlarged it four times. The table below<br> shows
lozanna [386]

Answer:

3) 5.4

Step-by-step explanation:

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[f(x2) - f(x1)]/[x2 - x1]

From the original photograph to the fourth enlargement, the points are (0, 15) and (4, 36.6). Replacing into the equation we get:

[36.6 - 15]/[4 - 0] = 5.4

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3 years ago
Can you help me please?
Fofino [41]

Answer: n=4,-4

Hope this helped

5 0
1 year ago
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C.

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