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Natali5045456 [20]
2 years ago
7

Will give brainlyest to the first correct answer! Easy points

Mathematics
2 answers:
xenn [34]2 years ago
8 0

Answer:

its most likely A

Step-by-step explanation:

Considering it goes at a steady rate with the second variable being reasonably scattered, the level of pure water would obviously go down not up,considering you are adding frogs. than again i havent really reached this degree of mathematics. But through reasoning i beleive it's A

Lisa [10]2 years ago
7 0
I did this problem almost 2 years ago and I’m pretty sure it’s A
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Solve the following quadratic equations
valentinak56 [21]

Answer:

see explanation

Step-by-step explanation:

To solve these equations equate them to zero, that is

x² - x - 42 = 0

Consider the factors of the constant term (- 42) which sum to give the coefficient of the x- term (- 1)

The factors are - 7 and + 6, since

- 7 × 6 = - 42 and - 7 + 6 = - 1 , thus

(x - 7)(x + 6) = 0

Equate each factor to zero and solve for x

x - 7 = 0 ⇒ x = 7

x + 6 = 0 ⇒ x = - 6

Solutions are x = - 6, x = 7

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

x² + x - 6 = 0 ← in standard form

(x + 3)(x - 2) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 3 = 0 ⇒ x = - 3

x - 2 = 0 ⇒ x = 2

Solutions are x = - 3, x = 2

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

x² - 25 = 0 ( add 25 to both sides )

x² = 25 ( take the square root of both sides )

x = ± \sqrt{25} = ± 5

Solutions are x = - 5, x = 5

7 0
3 years ago
Rewrite 8.24 × 10'6 in standard notation.
pshichka [43]
You need to add 6 "0" to the end
8,240,000
5 0
3 years ago
Read 2 more answers
3 packs of soda cost $10 less than 5 packs of soda. write an equation that models this.
Karolina [17]


Cost 1 pack = x

3x + 10 = 5x;

2x = 10;

x = 5.

1 pack cost $5

6 0
3 years ago
Which order pair satisfies 3x-y=8 and x+y=2
GrogVix [38]

Answer:

(2.5, -1/2)

Step-by-step explanation:

Solve the system by substitution 3x-y=8 and x+y=2

lets look at x + y =2

rewrite it as x = 2 - y

so now x is 2- y so we can substitute it in

3(2-y) -y = 8 this is the equation rewritten with x as 2-y, now solve for y

6 -3y - y =8

-6             -6

     -4y  =  2

       /-4     /-4

        y   = -1/2

so now remember  x = 2 - y

use our new y

x = 2 - (-1/2)

x = 2 + 1/2

x = 2 and 1/5 or 2.5

7 0
3 years ago
How many palindromes between 1000 and 9999 inclusive are divisible by 9?
Serhud [2]

Palindromes are numbers that remain the same, when reversed.

There are 10 palindromes divisible by 9 between 1000 and 9999

To do this, we list the numbers divisible by 9 between 10 and 99.

The numbers are:

\mathbf{A = 09,\ 18,\ 27,\ 36,\ 45.\ 54,\ 63,\ 72,\ 81,\ 90,\ 99}

Flip these numbers

\mathbf{B =90,\ 81,\ 72,\ 63,\ 54.\ 45,\ 36,\ 27,\ 18,\ 09,\ 99}

Combine corresponding numbers

\mathbf{AB =0990,\ 1881,\ 2772,\ 3663,\ 4554,\5445,\ 6336,\ 7227,\ 8118,\ 9009,\ 9999}

Rewrite as:

\mathbf{AB =990,\ 1881,\ 2772,\ 3663,\ 4554,\5445,\ 6336,\ 7227,\ 8118,\ 9009,\ 9999}

990 is less than 1000.

So, we have:

\mathbf{AB =1881,\ 2772,\ 3663,\ 4554,\5445,\ 6336,\ 7227,\ 8118,\ 9009,\ 9999}

Count the numbers

\mathbf{n(AB) =10}

Hence, there are 10 palindromes divisible by 9 between 1000 and 9999

Read more about palindromes at:

brainly.com/question/14076732

5 0
2 years ago
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