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forsale [732]
3 years ago
7

Last month, Margo bought a tree that grows 2.5 cm each day. It was 5 cm when she bought it and now it 65 cm tall.

Mathematics
2 answers:
Elina [12.6K]3 years ago
8 0

Step-by-step explanation:

2.5x + 5 = 65

Subtract 5 from both sides

2.5x = 60

Divide 2.5 from both sides

x = 24 days

Radda [10]3 years ago
5 0
You will want this equation to be in y=mx+b, because you already have the slope and y-intercept. X will be the number of days she has had the plant, and Y will be the height of the tree, because it is the variable being affected by the X. The slope, or the M, is 2.5 because this is the number of centimeters the tree grows per day. The y-intercept is 5, because this is the height of the tree originally. So, the equation is Y=2.5X+5. To solve the number of days Margo will have had the plant, plug in 65 (the height of the plant after a certain amount of days) into the Y variable and solve for X. So, 65=2.5X+5. Subtract 5 from both sides to get 60=2.5X, then divide both sides by 2.5 to get X=24. So, she will have owned the plant for 24 days.
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Dovator [93]

Answer:

x=0

Step-by-step explanation:

Hi there!

\displaystyle\frac{2}{3} (6x+30)=5(x+4)-2x

Distribute 2/3 and 5 into the parentheses:

4x+20=5x+20-2x

Combine like terms:

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I hope this helps!

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Delvig [45]

Answer:

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Step-by-step explanation:

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What value will make the equation true -21-?=1.5
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Step-by-step explanation:

Using a negative number to replace the ? turns the minus into a plus sign.

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murzikaleks [220]

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3 years ago
What are the missing coordinates? My teacher said it was (h-m,n), but I’m saying it is (h+m,n). Could anyone help? (16 points)
Afina-wow [57]

The missing coordinates of the parallelogram is (m + h, n).

Solution:

Property of parallelogram,

<em>Diagonals of the parallelogram bisect each other.</em>

Solve using mid-point formula:

$\text{Midpoint} =\left( \frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\right  )

Here x_1=m, y_1=n, x_2=h, y_2=0

              $=\left( \frac{m+h}{2}, \frac{n+0}{2}\right  )

$\text{Midpoint} =\left( \frac{m+h}{2}, \frac{n}{2}\right  )

<u>To find the missing coordinate:</u>

Let the missing coordinates by x and y.

Here x_1=0, y_1=0, x_2=x,  y_2=y

$\text{Midpoint}=\left( \frac{0+x}{2}, \frac{0+y}{2}\right  )

$\left( \frac{m+h}{2}, \frac{n}{2}\right  )=\left( \frac{0+x}{2}, \frac{0+y}{2}\right  )

$\left( \frac{m+h}{2}, \frac{n}{2}\right  )=\left( \frac{x}{2}, \frac{y}{2}\right  )

Now equate the x-coordinate.

$ \frac{m+h}{2}=\frac{x}{2}

Multiply by 2 on both sides of the equation, we get

x = m + h

Now equate the y-coordinate.

$\frac{n}{2} =  \frac{y}{2}

Multiply by 2 on both sides of the equation, we get

y = n

The coordinates are (m+h, n).

Hence the missing coordinates of the parallelogram is (m + h, n).

5 0
3 years ago
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