1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veseljchak [2.6K]
3 years ago
10

"to find x in part a, you would need" to solve the equation x 2 – 25 =0. wh

Mathematics
1 answer:
musickatia [10]3 years ago
3 0
X2 - 25 = 0

Add 25 on each side.

x2 = 25

Divide by 2 on each side.

x = 12.5
You might be interested in
I need helppppppppppppp
ohaa [14]
Simplify

4ax+12-3ax=25+3a

ax+12=25+3a

ax-3a=25-12

a(x-3)=13
5 0
3 years ago
100 POINT QUESTION!!! Please help!
Aleksandr-060686 [28]

Answer: Quest 1 final result. (I looked all this up)

(2x -1) * (5x squared - 2x + 6)

_____________________.

4

I could not find the work for part two but I got the answer: x=3,7

5 0
3 years ago
Read 2 more answers
Lucy is using a one-sample t ‑test based on a simple random sample of size n = 22 to test the null hypothesis H 0 : μ = 16.000 c
slega [8]

Answer:

The value of test statistic is 1.338

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 16.000

Sample mean, \bar{x} = 16.218

Sample size, n = 22

Alpha, α = 0.05

Sample standard deviation, s = 0.764

First, we design the null and the alternate hypothesis

H_{0}: \mu = 16.000\text{ cm}\\H_A: \mu < 16.000\text{ cm}

We use one-tailed t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{16.218 - 16.000}{\frac{0.764}{\sqrt{22}} } = 1.338

Thus, the value of test statistic is 1.338

4 0
3 years ago
-8x^2+4x+5=0 using quadratic formula
daser333 [38]
So you want to solve for x?

It would be nice if this would easily factor:
(-4x + 5)(2x +1)  = 0    This will not work!

So you need to use the quadratic formula:
a = -8, b = 4, c = 5

x = \frac{-b+/-  \sqrt{b^{2}-4ac} }{2a}

x = (-4 +/- \sqrt{16-4(-8)(5)})/2(-8)
   = (-4 +/- \sqrt{16 + 160})/-16
   = (-4 +\sqrt{176})/-16
   = 1/4 - \sqrt{11}/4

6 0
3 years ago
PLEASE HURRY !!
irakobra [83]

Answer:

49

Step-by-step explanation:

So it seems theres some sort of pattern. When you mutiply 7 by 3 you get 21. When you multply 5 by 7 you get 35. So basically 7 times 7 would be 49. Correct me if im wrong.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Underage drinking, Part I: Data collected by the Substance Abuse and Mental Health Services Administration (SAMSHA) suggests tha
    8·1 answer
  • 7000 is 10 Times as much as what number
    14·2 answers
  • 18 is what percentage of 25
    9·2 answers
  • Is talking sound energy
    5·1 answer
  • the ratio of the heights of two similar triangles is 6:5 if the perimeter of the larger triangle is 49.2 feet. find the perimite
    14·1 answer
  • Mags is 2 years older than Vector. Which equation will
    9·1 answer
  • Geometry ! No links please
    10·1 answer
  • On your first day in business, 126 people come to eat. They spend about $52 each. About how much money did you earn on your firs
    12·1 answer
  • A robotics company sells robot vacuum cleaners. Since the newest model was introduced a
    11·1 answer
  • What is the probability that the manufacturing unit has carbon emission beyond the permissible emission level and the test predi
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!