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3 years ago

Earlier we analyzed the revenue earned by the junior class at East High School from their discount card fundraiser. They had

Mathematics

1 answer:

marin [14]3 years ago

4 0

Answer: If the class sold c cards, the inequality that represents their profit goal is [20c - 0.2 > 10,000]

This year’s class sold 520 cards, so they [met] their goal because they sold more than [505] cards.

Step-by-step explanation:

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Simplify this equation Thanks a lot!!!

den301095 [7]

Answer:

-1

Step-by-step explanation:

We need to simplify the given expression . The given expression is ,

$\rm\implies ( 2 \sqrt6 +5)^{2n-1} ( 2\sqrt6 - 5)^{2n-1}$

Here we can see that the power of the both exponent is same that is (2n+1) . Recall the property of exponents ,

$\bf\implies a^m \times b^m = (ab)^m$

Using this property , we have ,

$\rm\implies ( 2 \sqrt6 +5)^{2n-1} ( 2\sqrt6 - 5)^{2n-1}$

This can be written as ,

$\rm\implies\{( 2 \sqrt6 +5) ( 2\sqrt6 - 5)\}^{2n-1}$

Simplifying using ( a+b)(a-b) = a² - b² ,

$\rm\implies\{( 2 \sqrt6)^2 -5^2 \}^{2n-1}\\\\\rm\implies ( 24 - 25)^{2n-1}$

Subtracting the numbers inside the brackets ,

$\rm\implies (-1)^{2n - 1 }$

Now we know that every odd number is in the form of 2n -1 , where n is any integer. Therefore , the power is odd .

Since the base is (-1) , for even power it is 1 and for odd power it is -1 . Therefore the final answer is ,

$\rm\implies\boxed{\quad \red{ -1 }\quad }$

Hence the required answer is (-1) .

4 0

3 years ago

Jody has 2 red marbles, 5 blue marbles, and 9 yellow marbles. What is the ratio of red marbles to blue marbles? A. 16:2 B. 2:16

vesna_86 [32]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

A grocery store sells three different quantities of sugar. A 1-pound bag costs $1.10, a 2-pound bag costs $1.92, and a 3-pound b

Mashcka [7]

$1.10 per pound for the 1-pound bag.
$0.96 per pound for the 2-pound bag.
$0.92 per pound for the 3-pound bag.

As the quantity of sugar increases, the unit cost decreases.

8 0

3 years ago

The perimeter of a rectangle is 90 inches. The length is 8 times the width. What is the length of the diagonal?

german

Answer:

Step-by-step explanation:

The formula for the perimeter of a rectangle is P = 2l + 2w. Since the length is 8 times the width, l = 8w. You can plug this into the equation.

P = 2(8w) + 2w

P = 16w + 2w

P = 18w

Now, plug in the given value for perimeter, and solve for w.

90 = 18w

(90)/18 = (18w)/18

5 = w

Since the width is equal to 5, you can now solve for l.

l = 8w

l = 8(5)

l = 40

The length of the diagonal is equal to 40.

3 0

2 years ago

Let f(x)=x2+17x+72 . What are the zeros of the function? Enter your answers in the boxes.

Bess [88]

Answer:

(x-9)(x-8)

Step-by-step explanation:

3 0

3 years ago

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