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koban [17]
3 years ago
15

What are the solution(s) to the quadratic equation x2 – 25 = 0?

Mathematics
2 answers:
DIA [1.3K]3 years ago
7 0
X= 5 and it also equals -5
yanalaym [24]3 years ago
4 0

hi  

x²-25 =  (x+5)  ( x-5)  

As a multiplication can only add up to zero if one of term is  0 ,

there is two solutions  :  

x+5 = 0

x = -5  

and   x-5 = 0

        x = 5  

So two solutions for  x² -25 = 0  which are   -5  and 5

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Answer:

a) What is the amount off the original price?

= $8.4

b) What is the new price for the pair of shoes?

= $33.6

Step-by-step explanation:

a) What is the amount off the original price?

We are told that:

The sale price is 20% off the original price.

Original price = $42

Hence:

$42 × 20%

$42 × 20/100

= $8.4

b) What is the new price for the pair of shoes?

The new price =

0riginal price - Amount off the original price

= $42 - $8.4

= $33.6

The original price = $33.6

8 0
3 years ago
A Man is redecorating his bedroom .he can choose from 5 paint colors 6 beds and 5 dressers how many ways can he choose to design
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8 0
3 years ago
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Fran has 7 sheets of paper for a coloring project. If she only uses 1/3 of a sheet of paper per drawing how many drawings can sh
notka56 [123]

Answer:

21 drawings

Step-by-step explanation:

So lets figure out how many drawings she can make per page. If she make a drawing using 1/3 of the page she can make 3 drawings per page. Now that we know she can make 3 drawings per padge, we can figure out how manyt drawings she can make by multiply the pages by drawings per padge. Let x be the drawings she can make.

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Multiple 7*3

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3 years ago
identify the initial amount,a,and the growth factor,b,in each exponential function.Break b into (1+r)where r is the rate of grow
Alla [95]

Given function : y=1.05(1.46)^x

We need to identify a " initial amount", b "growth factor", r " rate of growth".

We know, exponential growth formula

y=a(b)^x, where a is initial amount, b is growth factor. On comparing with given function let us find values of a and b.

y=1.05(1.46)^x ⇔ y=a(b)^x.

We can see a= 1.05 and b = 1.46.

Now, b=1+r.

Therefore, 1+r =1.46.

Subtracting 1 from both sides, we get

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On converting 0.46 into percentage, we get

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Therefore, intial amount a = a= 1.05 , growth factor b = 1.46, and the rate of growth r= 46%.

5 0
3 years ago
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