A; electronic devices are protected from power surges by having insulated wires.
The option that does not state a principle related to why ground wires are an effective safety device is:
A. Electronic devices are protected from power surges by having insulated wires.
Insulated wires protect electronic equipment against power surges, however, this has nothing to do with the usefulness of ground wires as a safety precaution.
The idea of earth wires is to provide a safe conduit for electrical currents to go into the Earth, avoiding harmful electrical potential from building up.
Thus, options B, C, and D all state principles that are directly related to the effectveness of ground wires as a safety device.
Hence, the correct answer is A.
Learn more about the insulated wires here:
https://brainly.com/question/3264493
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Which sum or difference is modeled by the algebra tiles
Answer:
i believe the answer that you picked is right ....i think ^^
A box of 6 glue sticks costs $8.95. How much will it cost to buy 5 glue sticks?
Sophia went out to eat dinner, and the meal cost $40.00. If Sophia received a 35% discount, what was
total value of the discount?
$12.60
$14.00
$15.20
$16.80
Sub
Answer:
The total value of the discount is $14
Step-by-step explanation:
40 x 0.35 = 14
NEED HELP SOLVING PLEASE
How many solutions are there to: 8x + 7 = 7 + 8x.
Answer: X make the equation true
Step-by-step explanation:
Adults in Turkey have mean caloric intake of 3500 calories per day (Wikipedia) with a standard deviation of 500 calories. A sample of 25 Ankara University students has an average intake of 3400 calories per day. Is this enough evidence to conclude that Ankara U. students average is not 3500 calories per day? Assume the distribution is normal.
A. State the null and alternative hypotheses.
B. What is the value of the test statistic?
C. Specify the rejection region?
D. State the conclusion.
Answer:
A) Null hypothesis; H0: μ = 3500
Alternative hypothesis;Ha μ ≠ 3500
B) t = -1
C) the rejection region will be;
p-value < 0.05
D) Conclusion is that there is no sufficient evidence to support the claim that Ankara U. students average is not 3500 calories per day.
Step-by-step explanation:
We are given;
Population mean; μ = 3500
Population standard deviation; σ = 500
Sample mean; x¯ = 3400
Sample size; n = 25
We want to find enough evidence to conclude that Ankara U. students average is not 3500 calories per day.
Thus, the hypothesis is defined as;
A) Null hypothesis; H0: μ = 3500
Alternative hypothesis;Ha μ ≠ 3500
B) sample size is less than 30, thus we will use a t-test.
Formula for the test statistic is;
t = (x¯ - μ)/(σ/√n)
t = (3400 - 3500)/(500/√25)
t = -100/(500/5)
t = -1
C) since the sample is small, let's assume a significance level of 0.05.
Thus,the rejection region will be;
p-value < 0.05
D) from online p-value from t-score calculator attached using;
t = - 1; DF = 25 - 1 = 24; significance level = 0.05 and two tailed hypothesis, we have;
p-value ≈ 0.3273
This is greater than the significance value of 0.05.
Thus, we will fail to reject the null hypothesis and conclude that there is no sufficient evidence to support the claim that Ankara U. students average is not 3500 calories per day.
Zelda rode her bike at a steady rate of 12 miles per hour for 3
Answer:
36miles
Step-by-step explanation:
Given parameters:
Rate = 12mph
Time = 3hr
Unknown:
Distance = ?
Solution:
The given rate amount is the speed. Speed is the distance divided by the time.
It is mathematically expressed as:
Speed = [tex]\frac{distance}{time}[/tex]
Distance = Speed x time
Distance = 12 x 3 = 36miles
Edward deposited $10,000 into saving accounts 2 years Ago. The simple interest rate is 2%. How much money did Edward earn in interest.
Answer:
the answer is someone else can
Answer:
S = P (r)(t)
Step-by-step explanation:
S = Simple interest
P = Principle
r = rate
t = time
S = (10000 x 2%)x2
Work brackets first 10000 x 2% = 200
then 200 x 2 = 400
S = 400
p(n) = -8n^2 + 9n, Find p(10)
Answer:
first
put the value of p(10) in the place n,
2-multiply -8×10^2+9×10
3-:- -8×100+90
4:-800+90=710ans
HELP ASAP!!! Question: Write 20 pounds for $4 as a unit rate.
Answer:
20 pounds divided by 4
Step-by-step explanation:
3x – 5 =-10
6. To solve the equation in the box for the
value of x, Michele started by adding 5 to both
sides. To get the correct answer, what must
Michele do next?
A divide both sides by 10
B. divide both sides by 3
C. multiply both sides by 10
D. multiply both sides by 3
After adding 5 to both sides what did Michele get? Let's see
[tex]3x-5 + 5 = -10 + 5\\3x= -5[/tex]
If she wants to find the value of [tex]x[/tex] then she needs to have only the variable [tex]x[/tex] on the left hand side. What she must do so that [tex]3x[/tex] becomes just [tex]x[/tex]? What do you have to do to the number 3 so it becomes a 1? That's right, she must divide by 3!
So, after dividing both sides by 3:
[tex]\frac{3x}{3} = \frac{-10}{3} \\\\\boxed{x=\frac{-10}{3}}[/tex]
Thus, the correct answer is letter B
qustion to give kagimatoby a brainly
Answer:
wdym
Step-by-step explanation:
HELP ASAP! I WILL GIVE 20 POINTS AND MARK AS BRAINLIEST!
Answer:
p=3m
Step-by-step explanation:
Given congruent triangles ΔABC ≅ΔDEF where AB = 11, BC = 5, and DE = 6x-7. Find the value of x.
Answer: Congruent angles are angles that have the same measure. ... y = 67 x = 180 – 67 = 113. 2. x = ______ y = ______. 3x – 5 = 127. +5 +5. 3x = 132 ... Find the measure of the angle and give the reason for knowing it. ... Solve for the unknown values: ... 2) AD. 3) AB. 4) BC. 24. In ΔABC, If CA ≅ CB and m∠A = 50, find the m∠B.
Answer:
x = 3
Step-by-step explanation:
Since the triangles are congruent then corresponding sides are congruent, that is
DE = AB , substitute values
6x - 7 = 11 ( add 7 to both sides )
6x = 18 ( divide both sides by 6 )
x = 3
Pls help answer correctly for brainliest pls and 50 points
If x = 4 then 2x + 6 =
If b = 12 then 2(3b + 1) =
If x = 5 then x^2 + 4 =
If x = 2 then 9x + 13 =
If x = 5 then 4x - 1 =
If x = 3 then 4x - 3 =
If s = 6 then 9 + 3s =
If x = 4 then 3x - 4 =
If n = 8 then 3(n + 1) =
If n = 6 then 5(n - 5) + 16 =
Answer:
Just substitute
Answers in order of questions
147429311992782721Hope this helped. Please mark as brainliest!
Answer:
lol whyd you delete my answer
Step-by-step explanation:
ashley's tricycle has two different wheel sizes: one larger wheel and two smaller wheels. As Ashley travels the distance between her house and her neighbor's house on the tricycle, the larger wheel rotates 4 times, and each of the small wheels rotate 12 times. If half the circumference of the larger wheel is 2 inches more than the circumference of one of the smaller wheels, what is the distance, in inches, traveled by the tricycle between ashley's house and her neighbor’s house?
A. 4 inches
b. 48
c. 60
d. 16
Answer:
the answer is D have a nice day!
what is the measure
Answer:
Step-by-step explanation:
t+t+10+t+20=180
3t+30=180
3t=180-30=150
t=150/3=50
t+20=50+20=70
exterior angle=180-70=110°
Amanda opened a lemonade stand on her street. It costs her $10.75 to buy the supplies each day, and she sells lemonade for $1.50 a cup. If she wants to make at least $50.00 in profits (sales - expenses) each day, what is the minimum number of cups of lemonade Amanda needs to sell? Input your answer as a whole number.
Answer:
41
Step-by-step explanation:
i rounded the 40.5 to 41.
Solve for m
b= 1/2mv
Answer: m = 2b/v
Step-by-step explanation:
What is the value of x?
Answer:
5
Step-by-step explanation:
6x+12 = 9x-3
3x = 15
x= 5
2. Which expression is equivalent to 3(4x + 10 = 2+3)?
Answer: ask ggle it gives you the answer
Step-by-step explanation:
6th grade math look at the pictures
Answer:
use a calculator.
Step-by-step explanation:
Answer:
2. 17.624
3. 9.72
4. 14.3
5. 2.11
8. 5,105.16
10. 124.7
Step-by-step explanation:
An item is regularly priced at $80, Ryan bought it at a discount of 5% off the regular price. How much did Ryan pay?
Answer:
16
Step-by-step explanation:
divide by 5
Answer:
$76
Step-by-step explanation:
5% of $80 is $4
$80-$4= $76
Which would describe a translation 2 unis left and one unit up
Answer:
(2, 1) or (1, 2)
Step-by-step explanation:
I not sure :3 I think its most likely (1, 2)
Find the value of the missing angle in the triangle below:
Answer:
85°
Step-by-step explanation:
x+32°+63°=180°(being sum of interior angle of triangle)
x=180°-95°
:. x=85°
4a2 - 1
c) 2а – За – 2
Iliana was part of a group that was working on changing 0.ModifyingAbove 4 with bar to a fraction. Each member of the group had a different answer. Which answer is correct?
Two-fifths
StartFraction 4 Over 10 EndFraction
StartFraction 4 Over 9 EndFraction
StartFraction 9 Over 4 EndFraction
Answer: 4/9
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
edge 2021
What is tan(x) equal to?
1
2
sin(x)
cos(x)
sin(x)/cos(x)
Answer: sin(x) / cos(x)
Step-by-step explanation: This is just a trigonometric identity you should have memorized :)
Ginger cut 9 yards of fabric into pieces that are yard long. How many -yard pieces did she make from the 9 yards of fabric?
A. 2 1/4
B. 8 3/4
C. 13
D. 36
Answer: c i think
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
You compare the happiness of people forced to smile with those of people forced to frown. Both groups have the same number of participants. The mean happiness level in the smile group is 20. The mean happiness level in the frown group is 19. The standard deviation of both groups is 20. The effect size is:_________
Answer:
0.05
Step-by-step explanation:
The Effect size = (Difference in Means) / (Standard deviation)
= (20 - 19) / 20
= 1/20
= 0.05
