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d1i1m1o1n [39]
3 years ago
11

I've been looking at answers for 3a+1=-3.6a(a-1) and everyone is calling a minus 1 atimes 1. why?

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
3 0
It has no real solutions. that's why
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Josephine solved a quadratic equation. Her work is shown below.
mariarad [96]

Answer:

Step-by-step explanation:

hello :

5(x + 7)² = 245

(x + 7)² = 49

x=0 is solution but you have other solution -14 because :(-14+7)² = (-7)² =49

here is an solution Step-by-step :

(x + 7)² = 49  means : (x + 7)² = 7²

(x + 7)² - 7²=0   use identity : a²-b² = (a-b)(a+b)

a=x+7  and b= 7

(x+7-7)(x+7+7) = 0

x(x+14)=0

x=0 or x+14=0

so : x=0 or x= -14

7 0
4 years ago
Which statement completes step 4 of the proof?
natulia [17]
Need more information
8 0
3 years ago
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write an expression to represent the area of a pool whose length is 5x + 1 unit and the width is 10 units
STALIN [3.7K]
Area=length x width. Thus you would do 10 x (5x+1). You have to multiply both 5x and 1 by 10 to correctly distribute. So the final equation would be area=50x+10.
5 0
3 years ago
Which graph represents the solution to the given system? y=5x+4; y=5x-3
Mars2501 [29]

Hello from MrBillDoesMath!

Answer:

The lines do not intersect


Discussion:

Where do the lines intersect?

5x + 4 = 5x - 3     =>                   subtract 5x from both sides

4         =       -3      =>  NO WAY! The lines do not intersect


Thank you,

MrB

3 0
3 years ago
A club has a total of $1,520.50 in its bank account. At a budget meeting they decide to set aside 0.28 times the total amount fo
Scilla [17]

To solve this problem, we know from the statement that Initially, the club has $ 152050 in its bank account.

To know the amount of money you want to reserve for the trip, multiply the initial amount by 0.28.

So, we have:

$ 1,520.50 * 0.28 = $ 425.74

Finally, the club will reserve $ 425.74 from its bank account to travel.

3 0
3 years ago
Read 2 more answers
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