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WARRIOR [948]
3 years ago
6

What are the solutions to the quadratic equation x^2-16=0

Mathematics
2 answers:
frutty [35]3 years ago
8 0
Simplifying this, we get:
(x+4)(x-4) = 0
Now, to get 0, we can replace x for one of these things to make 0, so:
x can either be 4, or -4
serg [7]3 years ago
4 0

Answer:

Solution of the quadratic equation x^{2}-16=0 is 4 and -4.

Step-by-step explanation:

The given quadratic equation is x^{2}-16=0

To find the solutions of the quadratic equation, we first need to make the factors of x^{2}-16.

We know that we can write a^{2} -b^{2} =(a-b)(a+b)

So, x^{2} -16 can be written as x^{2} -4^{2}, and it can be further written as (x-4)(x+4).

Now, on solving  x^{2}-16=0 we have,

x^{2}-16=0

x^{2} -4^{2}=0

(x-4)(x+4)=0

So, either x-4=0 or x+4=0

                 x=4   or x=-4

Hence, the solution of the quadratic equation x^{2}-16=0 is 4 and -4.

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Two numbers are in ratio s:t .if the first is a,find the second​
Whitepunk [10]

Answer:

The second number is a*t/s

Step-by-step explanation:

s/t = a / x   Let x be the second number.

sx = at       divide by s

x = at/s

7 0
3 years ago
How do i work this out?
Karo-lina-s [1.5K]

She has 45% of the original amount left

<h3>Ratio and proportions</h3>

Fractions are written as a ratio of two integers

Given the following

Initial amount. = ∈4000


Amount given to her sister = 1/4 * 4000 = 1000

Amount given to her brother = 40% of 3000 = 1200

Amount left = 4000 - (1000+1200)

Amount left = ∈1800

Determine the percentage left

x * 4000 = 1800

x = 1800/4000

x = 0.45

x = 45%

Hence she has 45% of the original amount left

Learn more proportion here: brainly.com/question/19994681

#SPJ1

5 0
2 years ago
Plz help ASAP! Ineed part C this is due tonight lol (a) How many cups of flour are there in 4 servings? How many cups of flour a
Arte-miy333 [17]

Answer:

1 1/4 cups of flour

Step-by-step explanation:

First find the amount for 1 serving.

So you divide the amount of 1 1/2 or 1.50 by 4

1.50/4=.375

Now do .375*7= 2.625 cups of flour

Now you need to subtract the amount you already have which is 4 cups.

2.625-1.50= 1 1/4 cups of flour is what you need left


6 0
3 years ago
Apples cost four times as much as oranges per pound. Apples are $2.80 per pound. How much do oranges cost per pound? *
inessss [21]

Step-by-step explanation:

Apples cost four times as much as oranges per pound.

If the cost of orange =x

then, cost of apples =4x

But,

the costs of apples =2.80$

So,4x=2.80

\tt{ x=\dfrac{2.80}{4} } ⠀

\tt{ x=0.70\$ } ⠀

so,oranges costs for per pound =0.70$

8 0
3 years ago
Find two numbers that can be multiplied to get a product of 0.3.
NemiM [27]
OC (0.6) and OD(0.5)
6 0
3 years ago
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