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3 years ago

Simplify 7x+42/x^2+13x+42

Mathematics

1 answer:

o-na [289]3 years ago

5 0

2(10x^3+21x^2+21
x^2

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Help !!! Pleaseeeeeeeeee

xxTIMURxx [149]

Answer is 49
Formula is b^2-4(ac)
3^2-4(2*-5) while a=2, b=3, c=-5
9-4(2*-5)
9-4(-10)
9+40
49

Hope this helps!

8 0

3 years ago

Donaldo is trying to figure out the recursive form of the following sequence to understand some of the expenses reported in his

madam [21]

Answer:

a_n=a_{n-1}-9

Step-by-step explanation:

6 0

3 years ago

Is 4 yards bigger than 13 feet

8_murik_8 [283]

1 yard = 3 feet

4 yards x 3 feet = 12 feet

12 feet is less than 13 feet

So False, 4 yards is less than 13 feet

hope this helps

6 0

4 years ago

Read 2 more answers

In how many ways can you select 3 books to bring on vacation from a group of 11 books?

Harlamova29_29 [7]

Answer:

u can select 3 books 9 ways

5 0

3 years ago

A 20 foot ladder leaning against a wall is used to reach a window that is 17 feet above the ground. How far from the wall is the

GarryVolchara [31]

The bottom of the ladder is 10.5 feet away from the wall

Step-by-step explanation:

The given scenario forms a right triangle.

Where

The length of ladder will be the hypotenuse

The wall on which the window is situated will ebt he perpendicular and

The distance between the foot of ladder and the wall will be the base

So,

Hypotenuse = H = 20 foot

Perpendicular = P = 17 feet

Base = B = ?

Using the Pythagoras theorem

$H^2=P^2+B^2\\(20)^2=(17)^2+B^2\\400=289+B^2\\400-289=B^2\\B^2=111\\Taking\ square\ root\ on\ both\ sides\\\sqrt{B^2}=\sqrt{111}\\B=10.53\\Rounding\ off\ to\ the\ nearest\ tenth\\B=10.5$

The bottom of the ladder is 10.5 feet away from the wall

Keywords: Triangle, Pythagoras Theorem

Learn more about Pythagoras theorem at:

#LearnwithBrainly

8 0

3 years ago