All categories

3 years ago

A quadratic equation is shown below:

Mathematics

1 answer:

Mariulka [41]3 years ago

7 0

hello :

help :
the discriminat of each quadratic equation : ax²+bx+c=0 ....(a ≠ 0) is :
Δ = b² -4ac
1 ) Δ > 0 the equation has two reals solutions : x = (-b±√Δ)/2a
2 ) Δ = 0 : one solution : x = -b/2a
3 ) Δ < 0 : no reals solutions

You might be interested in

How to do n to the power of 6 ÷n to the power of 4

Zielflug [23.3K]

Answer:

n to the power of 2

Step-by-step explanation:

baiscally just subtract 6-4 to get 2

5 0

3 years ago

Read 2 more answers

In his free time, Gary spends 7 hours per week on the Internet and 8 hours per week playing video games. If Gary has five hours

77julia77 [94]

Answer:

D. 30%?

I'm not 100% sure but I think its D. Sorry if it's wrong.

3 0

3 years ago

The perimeter of a rectangular

cupoosta [38]

Answer:

5 ft

Step-by-step explanation:

Since we have a rectangle, we know for sure that perimeter = double the width and double the height. Algebraically, that looks like:

P = 2W + 2H

Let's sub in the given values, P and W:

18 = 2(4) + 2H

Now, let's solve for the height, H:

18 = 8 + 2H

10 = 2H

10/2 = H

5 = H

I hope this helps!

7 0

3 years ago

When making a book cover, Anwar adds an additional 20 square inches to the surface area to allow for overlap. How many square in

e-lub [12.9K]

Answer:

234 square inches

Step-by-step explanation:

We are given that

Length of book, l=11 in

Width of book, w=8 in

Height of book, h=1in

Additional area required to overlap=20 square inches

We have to find how many square inches of paper to make cover of one book.

We know that surface area of cuboid

$S=2(lb+bh+hl)$

Using the formula

Surface area of book

$S=2(11\times 8+8\times 1+1\times 11)$

$S=214 in^2$

Total paper used to make cover of one book

=Surface area of book +additional surface area

= $214+20$

$=234in^2$

Hence, Anwar will use paper to make cover of one book=234 square inches

3 0

3 years ago

What is the answer to this problem

ladessa [460]

3:5 my answer has to be 20 characters so im just typing the rest of this to answer your question.

7 0

4 years ago

Read 2 more answers