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AlladinOne [14]
4 years ago
11

Can someone pls help

Mathematics
1 answer:
Zinaida [17]4 years ago
7 0

Answer:

a) At what time does Bethan arrive home from school?

The answer would be C) 15:30

b) What distance does Siobhan travel each day when going to school and back?

The answer would be D) 16km

Step-by-step explanation:

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Solve by completing the square (Show all work)<br> x2 – 10x + 10 = 35<br><br> Please help!
Keith_Richards [23]

Answer:

x=5+5√2; x=5-5√2

Step-by-step explanation:

To complete the square we need to turn part of the equation into a perfect square trinomial. Remember, in any equation we can do anything we like to the numbers as long as both sides stay equal.

First, let's subtract 10 from both sides.

x^2-10x=25

This does not factor, so we need to turn it into a perfect square trinomial by adding the quantity equal to (b/2)^2. In this case, (b/2)^2 is 25.

x^2−10x+25=25+25

IMPORTANT: You must keep the sides of the equation equal, so we added a 25 to the right side as well to keep the equation true.

From here we can factor, simplify and find our zeroes.

(x-5)(x-5)=50

(x-5)^2=50

x-5=±√50

x=5±√50

√50=5√2

So our final answer is:

x=5+5√2; x=5-5√2

HTH :)

8 0
3 years ago
You bought a new car in 2015 for $32,000 that is depreciating in value by 15% each year. Write a function to represent this situ
Hitman42 [59]

Function: x = years

x = $32,000-15%x

Value of car in 2020:

$8000

4 0
3 years ago
Ivan has 15 yards of green felt and 12 yards of blue felt to make 3 quils if ivan uses th esame total number of yards for each q
Ede4ka [16]
Ivan would use 5 yards of green felt and 4 yards of blue felt.
3 0
4 years ago
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How many cups are in a gallon?
Tpy6a [65]
16 us customary cups are in a gallon
6 0
3 years ago
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Let g be the piecewise defined function shown.
gogolik [260]
For this case we have the following function:
 g(x) =  \left \{ {{x+4} \atop {2-x}} \right.
 For each of the domains we will choose a value.
 We have then:

 For −5 ≤ x ≤ −1
 Let's choose the value of x = -3 
 Evaluating the function we have:
 g(x) = x+4&#10;&#10; g(-3) = -3+4&#10;&#10; g(-3) = 1
 Answer:
 
g(-3) = 1
 
 For −1 < x ≤ 5:
 
Let's choose the value of x = 0
 Evaluating the function we have:
 g(x) = 2-x&#10;&#10; g(0) = 2-0&#10;&#10; g(0) = 2
 Answer:
 
g(0) = 2
5 0
4 years ago
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