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Vanyuwa [196]
3 years ago
14

If the discriminate of a quadratic equation is 28 describe the roots

Mathematics
1 answer:
katrin2010 [14]3 years ago
7 0
B) two real roots is the answer because it is bigger than 0.
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Jimmy's cedar trunk is in the shape of a rectangular prism and has a volume of 3/4 cubic yard. How many cubic blocks with a side
gizmo_the_mogwai [7]

Answer: 6 blocks

Step-by-step explanation:

Given

Volume of the rectangular prism is V=\dfrac{3}{4}\ yd^3

Length of the cubic block is a=\dfrac{1}{2}\ yd

Volume of each cubic block is

\Rightarrow V_o=\left (\dfrac{1}{2}\right)^3\\\\\Rightarrow V_o=\dfrac{1}{8}\ yd^3

Suppose, n blocks are required to measure the volume of Prism

\Rightarrow V=nV_o\\\\\Rightarrow \dfrac{3}{4}=n\cdot \dfrac{1}{8}\\\\\Rightarrow n=\dfrac{3\times 8}{4}\\\\\Rightarrow n=6\ \text{blocks}

Thus, 6 blocks are required to measure the volume of prism.

7 0
3 years ago
Please Help!!<br><br> What should be done 10x ^ 2 - 8x to create a perfect square ?
Pani-rosa [81]

Answer: 10x^2-8x+16

Step-by-step explanation:

Use the formula (b/2)^2

then plug in values:

(-8/2)^2 = -4^2 = 16

ans: 10x^2-8x+16

hope this helps

4 0
2 years ago
9 km and 597 m is equal to which of the following? (Please show the work tysm
bekas [8.4K]

e 95,970 l dont know any work just looked it up sorry

5 0
3 years ago
If 1000 square centimeters of material is available to make a box with a square base and an open top, find the largest possible
guapka [62]
<span>The area of the base is x^2> The height is h. Each side of the box has area xh. There are 4 sides of the box so the total surface area of the box is x^2+4xh and that is equal to 1000. Solve that equation for h: x^2+4xh = 1000 h = (1000-x^2)/4x so the Volume = x^2[(1000-x^2)/4x] Simplify and get V = 250x-x^3/4 The volume will be a maximum when its first derivative is 0. V' = 250-3/4x^2 Set to 0 and solve. x=18.26 Now plug into the volume function to find the maximum volume: V=250(18.26)-(18.26)^3/4 V= 4564.35 - 1522.10 =3042.25</span>
6 0
3 years ago
Read 2 more answers
Which algebraic expression is equivalent to the expression below?
Anna007 [38]

Answer:

\boxed {52x - 45} (Choice B)

Step-by-step explanation:

Solve the following expression:

9(5x - 5) + 7x

-Use <u>Distributive Property</u>:

9(5x - 5) + 7x

45x - 45 + 7x

-Combine like terms:

45x - 45 + 7x

\boxed {52x - 45}

6 0
3 years ago
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