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marissa [1.9K]
2 years ago
8

What is the sum of 2x^2-5x-2and 4x^2-6x+8

Mathematics
1 answer:
rjkz [21]2 years ago
6 0

Step-by-step explanation:

this should be correct but im not 100%sure

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A 4 foot tree was planted in 2012 outside a high school. The tree grew continuously by 22% each year from that point. Find out w
Brut [27]

Answer:

The height of the tree in 2020 was of 19.63 feet.

Step-by-step explanation:

Exponential equation for growth:

The exponential equation for the growth of an amount has the following format:

H(t) = H(0)(1+r)^t

In which H(t) is the amount after t years, H(0) is the initial amount and r is the growth rate, as a decimal.

A 4 foot tree was planted in 2012 outside a high school.

This means that H(0) = 4

The tree grew continuously by 22% each year from that point.

This means that r = 0.22

Find out what the height of the tree was in 2020.

2020 is 2020 - 2012 = 8 years after 2012, so this is H(8).

H(t) = H(0)(1+r)^t

H(t) = 4(1+0.22)^t

H(4) = 4(1.22)^t

H(4) = 4(1.22)^8 = 19.63

The height of the tree in 2020 was of 19.63 feet.

6 0
3 years ago
HeLPPP
sveta [45]

Answer:

1/2 is the answer. i just took the quiz

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The diagram shows a sector of a circle of radius 4 cm.<br> work out the length of the arc abc
Zielflug [23.3K]
Need to know the angle for this I think?
3 0
3 years ago
HELPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
zvonat [6]

<u>Let's take this step-by-step:</u>

  • Part (a)

         The mathematical name of this shape is a <u>right trapezoid </u>

              ⇒ <em>It is a trapezoid since the image shows a quadrilateral that </em>

<em>                   has two parallel sides and two non-parallel sides. It is a right </em>

<em>                   trapezoid because it has two rights angles</em>

  • <em>Part (b)</em>

<em>           </em>The cube has <u>6</u> faces

               ⇒ <em>faces are the individual flat surfaces of an object</em>

<em>                    ⇒by looking at a picture of a cube, we see it has 6 sides</em>

<em>                        ⇒ (I attached an image of a cube below)</em>

Hope that helps!

5 0
2 years ago
Which expression is equivalent to (-7) (-7) (-7)
Virty [35]
I think the answer is -7x(-7)x(-7)
5 0
3 years ago
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