Answer:
40
Step-by-step explanation:
because 95/100 x 38/1 = 40
The number of total questions in the quiz if, Helen got a 95% on her math quiz. She had 38 questions right is 40.
What is percentage?A percentage, often known as percent, is a division by 100. Percentage, which means "per 100," designates a portion of a total sum. 45 out of 100 is represented by 45%, for instance. Finding the percentage of a whole in terms of 100 is what percentage calculation is. Both manual calculation and the use of internet calculators are options.
Given:
Helen got a 95% on her math quiz,
The number of right questions = 38,
Calculate the total number of questions as shown below,
Percentage = The number of right questions / Total number of questions × 100
95 = 38 / x × 100
x = 38 / 95 × 100
x = 0.4 × 100
x = 40
Thus, the total number of questions is 40.
To know more about percentages:
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Help me pleasee 20 points ! If u can’t see zoom it please help
Answer:
1 hr = $60.20
2 hrs. = $120.40
3 hrs. = $180.40
4 hrs. = $240.80
5 hrs. = $301.00
Step-by-step explanation:
Multiply 60.20 by the number of hours to get your answers.
Ex: $60.20 (amount every hour) x 2 (number of hours) = $120.40
HELP PLEASE ASAP! ILL GIVE BRAINLIEST IF YOU CAN HELP :)
Part 1: Answer the following questions (20 points)
1. Name and describe the components needed to make a complete circuit.
2. Compare and contrast a series and parallel circuit. Give at least one way that they are alike and one way that they are different.
3. Ohm's law is represented by the equation I = V/R. Explain how the current would change if the amount of resistance decreased and the voltage stayed the same.
4. Define resistance and describe what would happen to a light bulb if the voltage increased but the resistance stayed the same.
Part 2: Design your own circuit (40 points)
Design a circuit and draw a circuit diagram using the proper symbols. Your circuit must contain a battery, a light bulb (if you would like to substitute another item that uses electrical power you may), a switch, an ammeter, and a resistor. After you draw your circuit, complete the questions which ask you to describe the circuit that you have created. You may hand draw the circuit and scan or fax the worksheet to submit for grading. Or you may use a draw/paint program to create your circuit in the space provided.
Circuit Diagram:
Question 1: Is the circuit you created a parallel, series or a series/parallel circuit? Support your answer with a description of this type of circuit.
Question 2: What is the purpose of the resistor in your circuit?
Question 3: How does the switch work?
Question 4: Describe the path of the electric current through your circuit.
Question 5: Explain how your battery works. (You may want to look at the Electric Current lesson) What are some possible materials you could use to make your battery?
Answer: part 1
1. You need a Source of electric power (battery or generator), a load to absorb the power (lamp, motor, heating coil) and wiring to connect the load to the power source!
2. they both give off electricity energy, and they are different because they dont release the same amount of energy
3. Current will increase
Explanation:
In Ohm's law the equation for current is current = voltage / resistance.
In order to explain how current is effected when resistance decreases while voltage stays the same, lets represents the situations with some possible inputs.
Let's compare 3 different closed circuits all with a voltage of 10V.
In circuit 1, the resistance is 5 ohm.
In circuit 2, the resistance is 2 ohms.
In circuit 3, the resistance is 1 ohms.
The current of:
Circuit 1 = Voltage / Resistance = 10 V / 5 ohms = 2 Amps
Circuit 2 = Voltage / Resistance = 10V / 2 ohms = 5 Amps
Circuit 3 = Voltage / Resistance = 10V / 1ohm = 10 Amps
As you can see in this representation, as the resistance in a circuit increases while the voltage is constant, the total current is increased.
4. The resistance of a conductor is the ratio of the voltage
between its ends to the current through it.
If the voltage between the ends of a light bulb's filament
increases but the filament's resistance remains constant,
then the current through it increases by the same factor
as the voltage increase. The effect is to cause the light
to emit more light and heat ... both increase proportional
to the square of the voltage ... and possibly to "burn out".
Part 2
1. it's a circuit wherein all the elements are in parallel and a resistance is fitted in series across which a voltmeter is connected to measure potential drop acrossR so as to find the current across the load that is bulb which connected to in series with the resistor
2. A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.
3. The switch simply opens (off) or closes (on) the connection between the two terminals on the switch. When the switch is on, current flows along the black wire through the switch to the light, and then returns to ground through the white wire to complete the circuit.
4. the current runs through the motherboard and into the smaller components or the small internal wiring
5. A battery is made up of three parts. The Cathode (positive end +) , the Anode (negative end -) and the electrolyte. The electrolyte allows electrical charges to travel between the cathode and anode. This chemical reactions creates the flow of electricity supplying the electrical voltage potential to power a circuit.
Typical materials of a battery are as follows
- Anode most often is made of zinc
- Manganese dioxide acting as Cathode.
- the electrolyte between and inside contains ions
I feel like I did this, but Hope this help
!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
C
Step-by-step explanation:
it's an acute angle so it has to less than 90 and 71 just seems like it's too much
13 (2) 2012 Measement/23 of Trapezoids and the figures
-12.5 cm
DI
cm
Tresketch of this crayon represents an irregular polygon. Find the area of the figure
2 cm
21.75m?
<
DE 75m
C. 375 m
Answer:
The answer is 40.5 which is D
Step-by-step explanation:
Which expression is equivalent to 0.5y+10.5+6.5y+0.5-0.5y?
1) 7.5y - 10
2) 6.5y + 10
3) 6.5y - 11
4) 7.5y + 11
Answer:
6.5y + 10
Step-by-step explanation:
I got it right !
Answer:
2) 6.5y + 10
explanation:
I checked it on Iready and it was right
The movie rental store CineStar offers customers two choices. Customers
can pay a yearly membership of $45 and then rent each movie for $2 or they can
choose not to pay the membership fee and rent each movie for $3.50. Which
would you choose and why?*
Answer:
The yearly fee + $2 per movie
Step-by-step explanation:
Because lets say you rent 50 movies per year. Well with the yearly fee its $145. But with no yearly fee and just $3.50 per movie it’s $175.
Someone has at least three belts, all of his belt are white except two all of his belts are brown except two All of his belt are blue except two How many belts does he have
Answer:
Step-by-step explanation step one he has three and two so you have do math.
step two you need to do the math so,tree+two =5.
last step he has 5 so that is it
that is the steps
The graph of an equation drawn through which two points would best represent the relationship between the number of miles and the cost of the trip? Cost and Distance (10,5) and (250, 120) (40, 10) and (250, 145) 160 150- 140- 130 120 - 110- 100- 90 80 (15, 25) and (240, 150) . 70 Cost (in dollars) 60 (60, 25) and (240, 150) 50 40 30 20 10 0 0 20 40 60 80 100 120 140 160 180 200 220 240 260 Distance (In miles) Done-
Answer:
250
Step-by-step explanation:
Plz ve me brainlest
Write the equation of the line in slope intercept form.
Answer:
y = -3/2x
Step-by-step explanation:
Mario's net worth is $8,250.63. His liabilities are $3,222.35. What is the value of his assets?
and another question
Lizzie's net worth is $3,285.22. Her assets are $6,255.85. What is the dollar amount of her liabilities?
Answer:
.
Step-by-step explanation:
Answer:
1) $11472.98
2) $2970.63
Step-by-step explanation:
what is 3x + 4y = -24 in standard form?
Irina plotted the number of participants in a summer camp program on a coordinate plane to create the following scatterplot. Which graph shows the line of best fit for this scatterplot?
Answer: A or the first graph on edge 2021
Step-by-step explanation: Just took the test good luck
Answer:
The first graph (A)
Step-by-step explanation:
What is 14 out of 28 expressed as a fraction?
Answer:
14/28 is already a fraction but if you simplify it will be 1/2 or 50% as a percentage
Answer: 14/28 but 1/2 as a fraction in simplest form
Step-by-step explanation:
14*2=28 this means that 14 is half or one half of 28 which is why 1/2 is 14/28 in simplest form.
Only put 1/2 if you don’t see the fraction 14/28.
Hope this helps
Please help me?!!!!!!!
Answer:
The last one: 12x + 3
Step-by-step explanation:
6 + 4(3x - 2) + 5
6 + 12x - 8 + 5
12x + 6 - 8 + 5
12x + (-2) + 5
12x + 3
Lo is making beaded necklaces. For each necklace, she uses 38 spacers, +4 beads per inch of necklace length. Write an equation to find out how many beads Li needs for each necklace, where x is the length, in inches, of the necklace
Answer:
3x+5 is 130 whereas they have no
A 2 digit number is such that thrice the sum of its digits is less than the value of the number by 8.
When the digits are reversed the number increases by 9.
Find the number.
Answer:
23
Step-by-step explanation:
Let "ab" represent the digits of the number.
"thrice the sum of its digits is less than the value of the number by 8"
The value of the number is 10a+b.
3(a+b) = (10a+b) - 8
3a+3b = 10a+b-8
7a-2b = 8
"When the digits are reversed the number increases by 9"
Value of "ba" = 10b+a
(10b+a) - (10a+b) = 9
9b-9a = 9
b-a = 1
b = a+1
7a-2(a+1) = 8
5a -2 = 8
a = 2
b = a+1 = 3
"ab" = 23
Help me out with this question (geometry)
Answer:
Number C is the answer
Step-by-step explanation:
The real relation between them is <EBF = 1/2 <ABC
square root of x^2 if x Greater or equal to 0
Answer:
greater than 0
Step-by-step explanation:
A peep increased by 25% is a pop. A pop decreased by 40% is a slug, and a slug increased by 100% is a slap. What percent of a peep is a slap
Answer:
A slap is 120% of a peep
Step-by-step explanation:
We shall make use of values here
Let a peep be value of 100
A pop is 100 + 25% of 100
= 100 + 0.25(100) = 125
Pop = 125
A slug is pop deceased by 40%
= 125 - (40% of 125)
= 125-(50) = 75
A slap is a slug increased by 100%
= 75 + (100% of 75)
= 75 + 75 = 150
So now, we want to calculate percent of peep is a slap
That will be;
150/125 * 100%
= 120%
PLS HURRY!!
Pi is 3.14. What is the Golden Ratio?
Answer:
Step-by-step explanation:
Also known as the Golden Section, Golden Mean, Divine Proportion, or the Greek letter Phi, the Golden Ratio is a special number that approximately equals 1.618. ... The Fibonacci sequence is the sum of the two numbers before it. It goes: 0, 1,1, 2, 3, 5, 8, 13, 21, and so on, to infinity.
Answer:
1 + square root of 5 divided by 2
NEED HELP HW PLZ I WILL GIVe BRAINLIEST
Answer:
circles are cool because lines
Jesse drank 3/4
liter of water Monday before going jogging. He drank 3/5
liter of water after his jog. How much water did Jesse drink altogether? Write your answer as a mixed number.
Answer:
1 7/20
Step-by-step explanation:
You want to add 3/4+3/5, but they need to have the same denominator. A common factor for 4 and 5 is twenty, so multiply 3/4 by 5/5 and 3/5 by 4/4. This will give you 15/20 + 12/20. You can add this to get 27/20, or 1 7/20 as a mixed number
which metric unit is used to measure the length of a tennis court
Write 3/8 as a decimal
Pls help extra points and mark brainlist
PLEASE ASNWER ASASP!!!!!!!!!!!! DUE IN 1 MIN!!!!!!!!!! BRAINLEST!!!!!!!!1
Choose Yes or No to tell whether 1 is a solution for the inequality 10p - 8 less than or equal to 12.
Yes
No
simplify the expression (8a^(m+3))^3 * (1/4a^(1−m))^6
Answer:
8a^(15 - 3m)Step-by-step explanation:
Simplifying in steps:
(8a^(m+3))^3 * (1/4 a^(1−m))^6 =(2^3)^3a^(3(m+3)) * (2^-2)^6a^(6(1-m))2^9 a^(3m+9) * 2^(-12) a^(6 - 6m) =2^(9 - 12) a^(3m + 9 + 6 - 6m) =2^3 a^(15 - 3m) =8a^(15-3m) =Answer:
(a^-3m+15)/8
Step-by-step explanation:
In a study of 900 adults, 45 out of the 325 men in the study said that they preferred to rent a movie on DVD rather than going out to a movie theater. What is the approximate percentage of men in this study who prefer to rent a movie on DVD
Answer:
[tex]\%DVD = 14\%[/tex]
Step-by-step explanation:
Given
[tex]Population = 900[/tex]
[tex]Sample = 325[/tex] --- selected adults
[tex]Proportion = 45[/tex] --- those that prefer renting a movie
Required
Represent the proportion as a sample.
This is calculated as thus:
[tex]\%DVD = \frac{Proportion}{Sample} * 100\%[/tex]
[tex]\%DVD = \frac{45}{325} * 100\%[/tex]
[tex]\%DVD = \frac{45 * 100}{325}\%[/tex]
[tex]\%DVD = \frac{45 00}{325}\%[/tex]
[tex]\%DVD = 13.85\%[/tex]
[tex]\%DVD = 14\%[/tex] --- approximated
Olivia hopes to complete 45 of the levels of her computer game by the end of the week. So far, she has completed 23 of the levels. What part of the levels must she still complete to meet her goal?
Answer:
2/15
Step-by-step explanation:
The Students Builds The Rectangular Prism With 3 Layers. what Is The Volume Of The Completed Rectangular Prism, In Cube Centimeters
Answer:
thats a very hard question the aanswer is like 12
Step-by-step explanation:
