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Kruka [31]
2 years ago
7

Deandre downloaded 8 apps onto his tablet in 12 seconds. at this rate, how many apps could be downloaded in one minute?

Mathematics
1 answer:
lilavasa [31]2 years ago
5 0

Answer:

40 apps

Step-by-step explanation:

12 sec ⇒ 8 apps

1 min = 60 sec

therefore, 60 sec ⇒ `60 x 8 / 12 = 40 apps

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A park has a grinkgo tree a dogwood tree and 2 blue spruce trees the blue spruce trees are 8 years old the grinkgo tree is 2 yea
enot [183]

Answer:

The age of the grinkgo tree is 10 years old and the age of the dogwood tree is 4 years old

Step-by-step explanation:

Let

x -----> the age of the grinkgo tree

y -----> the age of the dogwood tree

z -----> the age of the blue spruce tree

we know that

x=3y-2 ------> equation A

z=8 ----> equation B

x=\frac{1}{2}(y+2z)

substitute the value of z

x=\frac{1}{2}(y+2(8))

x=\frac{1}{2}(y+16) -----> equation C

equate equation A and equation C and solve for y

3y-2=\frac{1}{2}(y+16)

6y-4=(y+16)

6y-y=16+4

5y=20

y=4

Find the value of x (equation A or equation C)

x=3(4)-2=10

therefore

The age of the grinkgo tree is 10 years old and the age of the dogwood tree is 4 years old

7 0
3 years ago
Heeelllppp me please :)
Sophie [7]
The common ratio is 3.

I hope this helps!
4 0
2 years ago
In factored form please help
Brilliant_brown [7]

Answer:

3rd option

Step-by-step explanation:

\frac{3x^2-3}{x^2-5x+4} ( factorise numerator and denominator )

3x² - 3 ← factor out 3 from each term

= 3(x² - 1²) ← x² - 1 is a difference of squares and factors in general as

a² - b² = (a - b)(a + b)

x² - 1

= x² - 1²

= (x - 1)(x + 1) , then

3x² - 3 = 3²(x - 1)(x + 1) ← in factored form

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

x² - 5x + 4

consider the factors of the constant term (+ 4) which sum to give the coefficient of the x- term (- 5)

the factors are - 1 and - 4 , since

- 1 × - 4 = + 4 and - 1 - 4 = - 5 , then

x² - 5x + 4 = (x - 1)(x - 4)

then

\frac{3x^2-3}{x^2-5x+4} = \frac{3(x-1)(x+1)}{(x-1)(x-4)} ← in factored form

3 0
1 year ago
In three days, Karen ate 1/3 of a large bag of chips during
Alexandra [31]

Answer:

Karen asked for the manager

Step-by-step explanation:

Karen asked for the maneger because that is what karens do. you’re lucky that you are not black, becuase she would falsely accuse you of murder after slightly bumping into her on accident.

6 0
2 years ago
Simplify.<br><br><br><br> If d = –3, evaluate –d.<br><br><br><br> –3<br><br> 1<br><br> 0<br><br> 3
AnnZ [28]
-d would equal 3. just flip its around right?
7 0
2 years ago
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