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3 years ago

Milena just turned 11 years old. How old was she 2 1/4 years ago?

Mathematics

2 answers:

ankoles [38]3 years ago

5 0

Milena was 9 years and 3 months old

anyanavicka [17]3 years ago

5 0

Answer:

Milena was 8 years and 9 months old.

Step-by-step explanation:

11 - 2 = 9

12 divided by 4 = 3

3 x 1 = 3

12 - 3 = 9

Explanation:

Milena would have been 8 years and 9 months old because 2 years before she had just turned 11 she would have just turned 9. And 1/4 a year before she turned 9 she would have been 8 years and 9 months because 1/4 a year equals 3 months.

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A fruit company delivers its fruit in two types of boxes: large and small. Delivery of 8 large boxes and 4 small boxes has a tot

erma4kov [3.2K]

Answer:

x = 18.5 (large) , y = 6.25 (small)

Step-by-step explanation:

Let's start by assigning variables to each type of box.

The large box we will call "x"

The small box we will call "y"

We know that 8x + 4y = 173 (kilograms)

And 3x + 2y = 68 (kilograms)

Since we set up a system of equations, we can now use elimination, by multiplying the entire bottom equation by -2, to get rid of the "y" variable.

8x + 4y = 173

3x(-2) + 2y(-2) = 68(-2)

-6x + -4y = -136 (side note: notice how the "y"'s would cancel each other out because -4y + 4y equals 0)

Add equations together:

2x = 37

x= 18.5

Now that we have x, just substitute it into any of the equations to get y.

You will see that y = 6.25

Please mark this brainliest, and I hope this helps!

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3 years ago

Consider the positively charged particles seen here. The magnitude of their combined charges is represented by the vector arrow.

gavmur [86]

B)decreases by one; arrow length decreases by 1/3

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3 years ago

Find the value of the expression 4a^4 − 2b^2 + 40 when a = 2 and b = 7

Effectus [21]

Answer:6

Step-by-step explanation:

4(2)^4 − 2(7)^2 + 40

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64-2(49)+40

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3 years ago

Read 2 more answers

HELPPP I WILL BRAINLIST!!

charle [14.2K]

Answer:

Step-by-step explanation:

8 (x -3) +7 = 2x (4 -17)

8(x -3) +7 = 2x (-13) here was the error because the had 13 that is incorrect

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-17 = -26x -8x

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3 years ago

What is the slope of a line that is perpendicular to the line whose equation is 7x−3y=10?

Sonja [21]

Since this equation is already in standard form, there is no need to convert it. Standard form is Ax + By = C. In this equation, 7 = A, 3 = B, and 10 = C. From standard form, Ax + By = C equals negative A over B.

7x + 3y = 10

↓

$\displaystyle\ m= \frac{-7}{-3}$

Then you'd simplify.

$\displaystyle\ m=\frac{7}{3}$

The slope cannot be simplified any more, so this would be the final answer.

<em>- Marlon Nunez</em>

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3 years ago