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Vlad1618 [11]
3 years ago
11

30x^3 + 20x^2 - 45 - 30 *

Mathematics
1 answer:
Katen [24]3 years ago
7 0

303+202−75Step-by-step explanation:

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A 10-foot ladder leans against a wall with its foot braced 3 feet from wall's base. How far up the wall does the ladder reach?
dlinn [17]
Pythagorean theorem
for a right triangle with legs legnth a and b and hytponuse c
a^2+b^2=c^2

the legnht of th eladder is the hypotnuse
the 3 feet is bottom leg
height is other leg

10=c
3=a
b=?
3^2+b^2=10^2
9+b^2=100
minus 9 both sides
b^2=91
sqrt both sides
b=√91
aprox
b=9.53939


answer is √91 feet or aprox 9.53939
8 0
3 years ago
Solve the quadratic equation below by completing the square. What are the
alexandr1967 [171]

Answer:

the solution is:

Step-by-step explanation:

x2 - 12x + 30 = 23!!

3 0
4 years ago
-2x + |4n - 2|<br> x = -3<br> n = 2
Tresset [83]

Answer:

12

Step-by-step explanation:

4 0
3 years ago
I really need help with this statistical/variable question, i am really struggling and would be super happy if someone could ans
Pani-rosa [81]

Answer:

The 1st one is categorical

The 2nd one is categorical

The third one is quantitive

The fourth one is quantitve

The fifth one is quantitve

Step-by-step explanation:

A quantitative observation is something that is measurable.It represent data

E.x( How many cookies you ate last night)

A categorical observation is something based on your 5 senses that puts you into a specific category. (IT Doesnt have any mathematical phrases in it. It represent groups of a specific topic

E.x( what is your favorite color)

  • The 1st one is categorical
  • The 2nd one is categorical
  • The third one is quantitive
  • The fourth one is quantitve
  • The fifth one is quantitve
7 0
3 years ago
(you can zoom in) Can someone please explain why this is wrong?? ( Pythagorean theorem )
Serjik [45]
20^2 + 13.5^2 = c^2
            582.25 = c^2
          √582.25 = c
                 24.1 = c

hope this helps :)


6 0
4 years ago
Read 2 more answers
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