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ddd [48]
4 years ago
5

Which equation has the same solution as x^2-6x-13=0?

Mathematics
1 answer:
NeTakaya4 years ago
8 0
x^2-6x-13=0\\\\\underbrace{x^2-2x\cdot3+3^2}_{use:(a-b)^2=a^2-2ab+b^2}-3^2-13=0\\\\(x-3)^2-9-13=0\\\\(x-3)^2-22=0\\\\\boxed{(x-3)^2=22}
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Profit or loss question..please solve this​
Yuki888 [10]

<em>Answer:</em>

<em>I would say he makes 10.5%</em>

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

<em />

<em>Let the price at which the shopkeeper bought the article be 100. </em>

<em>Since he has to make a profit of 30%, he would mark the price as 130. </em>

<em>Now, he allows a discount of 15% i.e. 15% of 130 = 19.5 </em>

<em>The actual discounted price= 130–19.5= 110.5 </em>

<em> </em>

<u><em>He gets 10.5 on 100. The profit percent he makes is 10.5%</em></u>

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3 years ago
Last year the sales at a bookstore were 75% fiction books, and 25% nonfiction books.
natulia [17]
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8 0
4 years ago
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Please answer 27 and 28
valina [46]

Answer:

27: 29.93 Seconds

28: 28 ° Fahrenheit

Step-by-step explanation:

Number #27:

Given:

#1 Lap = 14.76 seconds

#2 Lap = 15.17 seconds

Steps:

1. Use the algorithm method.

      1

14.76

+ 15.17

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Answer: 29.93 seconds  

--------------------------------------------------------------------------------------

Number #28:

Given:

Wind Chill Temperature: - 18 ° F

Actual Temperature: 10 ° F

Steps:

1. Subtract 18 from 10.

Answer: - 28 ° degrees fahrenheit

Note: Whenever there is a negative sign next to a temperature, it means it's below freezing as the below freezing temperature is 0  ° Fahrenheit. This also means subtraction. In this case, you would subtract the negative amount from the positive amount creating an equation, that equation represents the degrees in fahrenheit:

10 - 18

The result should be -28.

This also means that the difference between both temperatures is 28 degrees. Wind chill creates a feeling of higher temperatures even though the actual temperature in the atmosphere was 10 ° F in this specific land structure.

Hope this helps,

-ROR

4 0
3 years ago
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Misha Larkins [42]

Answer:

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Step-by-step explanation:

Straight line is 180 so:

56 + x = 180

x = 124

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3 0
3 years ago
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There were 10 cupcakes on a plate and 7 kids who are trying to share it. How can they share the cupcakes ?
Bess [88]
They can split them in half and throw the rest out so no one gets jealous
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