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Free_Kalibri [48]
3 years ago
8

How to find the area of a circle​

Mathematics
1 answer:
tekilochka [14]3 years ago
7 0

Answer:

use Pi

Step-by-step explanation:

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What is the missing constant term in the perfect square that starts with x^2 -20x
lidiya [134]

Answer:

Missing constant: 100

Step-by-step explanation:

perfect square  (a - b)^2 = a^2 - 2ab + b^2

In this case

20x = 2 * x * 10

and

10^2 = 100

so

(x - 10)^2 = x^2 - 20x + 100

7 0
3 years ago
If you spend $50 (including shipping) at an online store, you recieve a $10 gift card. You want to purchase CDs that cost $12 ea
Crazy boy [7]

Four CDs must be bought to receive a gift card from an <em>online</em> store.

<h3>How to determine the least number of CDs to be bought to receive a gift card</h3>

The <em>total</em> costs are equal to the sum of the <em>shipping</em> cost and the total related to the number of <em>acquired</em> CDs (n). The number of gift cards (m) is equal to the total costs divided by <em>minimum spent</em> money, that is, $ 50. We need to solve the following inequation to find the minimum quantity of CDs:

(12 · n + 5)/50 > 1

12 · n + 5 > 50

12 · n > 45

n > 45/12

n > 3.75

Four CDs must be bought to receive a gift card from an <em>online</em> store.

To learn more on inequalities: brainly.com/question/20383699

#SPJ1

7 0
2 years ago
How do you change y=x^2-10x-6 into vertex form
In-s [12.5K]

Converting to vertex form is actually pretty simple so I think you might find something to help you out here. :)

https://mathbitsnotebook.com/Algebra1/Quadratics/QDVertexForm.html

3 0
3 years ago
Simplify.<br><br>x⁴y²/x²y*6​
CaHeK987 [17]

Answer:

x^2y^-4

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If RT=36, find the value of x
Talja [164]

Answer:

4

Step-by-step explanation:

So we know that RT is 36.

Note that RT is the combined length of RS and ST. Therefore:

RT=RS+ST

Substitute. RT is 36, RS is 6x+1 and ST is x+7:

36=(6x+1)+(x+7)

Combine like terms and add:

36=7x+8

Subtract 8 from both sides:

28=7x

Divide by 7:

x=4

So, our answer is 4 :)

8 0
3 years ago
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