Help plz. If u know the answer also show work for how you got it plz. Thanks!
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Related Questions
Jessica's parents are always telling her to turn off the lights when she leaves her room. The fixture in Jessica's room requires four bulbs that each use 75 watts of
electricity when they're on.
a. Jessica's parents estimate that she leaves the lights on unnecessarily for 2.5 hours per day. How many watt-hours of electricity are used by these bulbs during 2.5
hours?
b. Approximately how many kilowatt-hours of electricity are used in a year to keep these bulbs lit for 2.5 hours per day?
C. At a cost of $0.12 per kilowatt-hour, how much money is wasted per year by keeping these lights on unnecessarily? Round to the nearest dollar.
d. If five million people keep lights on as Jessica does, how much is wasted in unnecessary electric expenses?
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Answer:
Step-by-step explanation:
4*75 = 300 watts ( her light)
a) 2.5*300=750 w/h
b) 365*750 = 273.75 Kw/h
c) (0.12)*273.75 = $32.85
d) 32.85 * 5,000,000 = $164,250,000.00
Answer:
a.) 750
b.) 273.75
c.) $33.00
d.) $165,000,000.00
Complete the table using division to figure out the ratios that are equivalent to 40/28.
? ? 40
? ? 28
Answers
Answer:
[tex]\frac{40}{28} =\frac{20}{14} =\frac{10}{7}[/tex]
Step-by-step explanation:
[tex]\frac{40}{28} =\frac{20}{14} =\frac{10}{7}[/tex]
first divide both the numerator and the dnominator by 2,
then by 4.
Place the samples in order from the sample with the greatest variation to the sample with the least variation.
a sample of
20 women
a sample of
5 women
a sample of
45 women
a sample of
60 women
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Answer:
1. a sample of 60 women
2. a sample of 45 women
3. a sample of 20 women
4. a sample of 5 women
Step-by-step explanation:
In ΔOPQ, the measure of ∠Q=90°, OP = 7.2 feet, and PQ = 5.5 feet. Find the measure of ∠P to the nearest degree.
Answers
Answer:
40
Step-by-step explanation:
DeltaMath
The area of a circle, in terms of π , is 72 π m2. Find the value of the radius. Give your answer as a simplified surd.
Answers
Answer:
R=3rad2
Step-by-step explanation:
Area of circle: pi r^2
72pi=pir^2
r^2=72
r=6rad2
Rick wants to use multiplication to solve {k} = 7 \div \dfrac13k=7÷ 3 1 k, equals, 7, divided by, start fraction, 1, divided by, 3, end fraction. Which multiplication equation can Rick use? Choose 1 answer: Choose 1 answer: (Choice A) A \dfrac13\times{k} =7 3 1 ×k=7start fraction, 1, divided by, 3, end fraction, times, k, equals, 7 (Choice B) B \dfrac13={k}\times7 3 1 =k×7start fraction, 1, divided by, 3, end fraction, equals, k, times, 7 (Choice C) C \dfrac13\times7 = {k} 3 1 ×7=kstart fraction, 1, divided by, 3, end fraction, times, 7, equals, k
Answers
Answer: (a)
Step-by-step explanation:
Given
Equation is
[tex]k=\dfrac{7}{\frac{1}{3}}[/tex]
Write the cross-multiplication of the given equation i.e.
[tex]\Rightarrow \dfrac{1}{3}\times k=7[/tex]
This corresponds to the option (a).
Answer:
C
Step-by-step explanation:
ITS C BECAUSE I WASTED A MISTAKE BC OF THE OTHER GUY ON TOP
DONT USE HIS
JUST USE MINE
DONT NEED AN EXPLANATION NOOOOB
will mark brainliest please help!!
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Answer:
The range was same in both classes
Also on this one I’m having trouble
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Answer:
try just 10. without the (-)
2. If curves the length of a circle's diameter were laid out along the circle end to end, how many of them would fit on the circle? (1) more than I but less than 2 (2) more than 2 but less than 3 (3) more than 3 but less than 4 (4) more than 4 but less than 5 by the length of its diameter that ratio is closest to.
If someone could answer this quickly I will mark them brainleast.
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girl if im being honest i dont know Step-by-step explanation:
Find the volume of the cone, round your answer to the nearest hundredth. Use 3.14
for t.
9
-2-0
units
Answers
Answer: 37.7un^3
Step-by-step explanation:
Volume = 1/3πr^2h
=1/3×π×22×9
=12π
= 37.699111843078 feet3
Please HELPPPP I need this right now!
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Answer:
The radius will be half of your diameter so,
since 26 is your diameter half of that is = 13 is your new radius.
Now finding the area:
13^2 = 169
169 x 3.14 = 530.66 cm2 is your area.
Formula of an area of a circle:
πr^2
pi(3.14 or 22/7 depending on whatever they tell you to use for pi) x radius being squared
Which of these is part of the prime factorization of 630?
3 with a tiny 2 x 7
5 with a tiny 3
3 with a tiny 3
5 with a tiny 2 x 7
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Answer:
I don't really get the answer choices but I can show you how I did my work using factor trees.
I put astericks(*these) around the prime #'s(what's in the circles).
630
^
2.* 315
^
5. * 63
^
3.* 21
^
7*. 3*
hope this helps!!
23. Assuming the green is flat, what is the radius of the green?
Answers
Answer:
60
Step-by-step explanation:
[tex]r^{2} +32^{2} = (r+8)^{2}[/tex]
[tex]r^{2} +1024=r^{2} +16r + 64[/tex]
[tex]960 = 16r[/tex]
[tex]60=r[/tex]
HELP ASAP, LINKS AND ABSURD ANSWERS WILL BE REPORTED! I WILL MARK BRAINLIEST!!
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What are the graph coordinates of the vertex of the graph function y=x^2+6x-11
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Answer:
(3-2) hope it helps sorry if wrong it should be right
Answer:
(-3, -20)
Step-by-step explanation:
Which problem can be solved with 6divided 1/2
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Answer:
D
Step-by-step explanation:
6 ounces ÷1/2 ounce slices
Help due soon please help
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Answer:
y=5
Step-by-step explanation:
Suppose that a new employee starts working at $7.72 per hour and receives a 5% raise each year. After time t, in years, his hourly wage is given by the equation y=$7.72(1.05)t. Find the amount of time after which he will be earning $10.00 per hour.
After what amount of time will the employee be earning $10.00 per hour?
Answers
Answer:
substitute 10 for y (y=10) and solve for t
2.17
Step-by-step explanation:
I think the equation is written wrong because assuming that his wage increases at the end of each year, the beginning of the first year wages should be 7.72, not 0.
recommended correction
y=7.72 + (1.05)t
What is m
A: 19°
B: 68°
C: 112°
Answers
Answer:
m<N=68
Step-by-step explanation:
opposite angles of the parallelogram are equal(or congruent):
4x+36=6x-2
6x-4x=36+2
2x=38
x=38/2=19
the sum of the angles of the parallelogram =360
4x+36=4(19)+36=112 angle P
6x-2=6(19)-2=112 angle M
let Q= N=x
2x+112+112=360
2x=360-224
2x=136
x=136/2=68
What is the perimeter of a quadrilateral with vertices at (5,2),
(10,2), (5,5), and (10,5)? PLZZ SHOW WORK AND RIGHT!
Answers
Answer:
16
Step-by-step explanation:
Draw a picture!
Length1 goes from (5, 2) to (10, 2)
since the y coordinate is the same
L1 = (10 - 5) = 5
Length2 goes from (5, 5) to (10, 5)
since the y coordinate is the same
L2 = (10 - 5) = 5
Width1 goes from (5, 2) to (5, 5)
since the x coordinate is the same
W1 = (5 - 2) = 3
Width2 goes from (10, 2) to (10, 5)
since the x coordinate is the same
W2 = (5 - 2) = 3
-----------------------
Perimeter
p = 5 + 5 + 3 + 3
p = 16
The perimeter of quadrilateral is 16 units.
What is quadrilateral?A closed quadrilateral has four sides, four vertices, and four angles. It is a form of polygon. In order to create it, four non-collinear points are joined. Quadrilateral interior angle sums are always equal to 360 degrees.
Given coordinates,
(5,2), (10,2), (5,5), and (10,5)
let A, B, C, and D be the points of coordinates (5,2), (10,2), (5,5), and (10,5) respectively.
Length1 goes from (5, 2) to (10, 2)
since the y coordinate is the same
AB = (10 - 5) = 5
Length2 goes from (5, 5) to (10, 5)
since the y coordinate is the same
BC = (10 - 5) = 5
Width1 goes from (5, 2) to (5, 5)
since the x coordinate is the same
CD = (5 - 2) = 3
Width2 goes from (10, 2) to (10, 5)
since the x coordinate is the same
DA = (5 - 2) = 3
perimeter = sum of all sides
p = 5 + 5 + 3 + 3 = 16 units
Hence the perimeter is 16 units.
Learn more about quadrilaterals;
https://brainly.com/question/936148
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What factors greatly affect the climate if you live near the Manila Bay?
Answers
How can you use estimation to justify that the answer $7,875 is reasonable? $1,575 X 5 =p $1,575 X 5 = $7,875. So, p = $7,875.
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Answer:
p= 1
Step-by-step explanation:
1,575x5 =p p=1
Convert radian measure into degrees.
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From the latter, we obtain the equation 1 radian = (180π)o . This leads us to the rule to convert radian measure to degree measure. To convert from radians to degrees, multiply the radians by 180°π radians .
Find the volume of each cylinder. Which cylinder has the greater volume? Use 3.14 for π and round your answers to the nearest hundredth.
Two cylinders. The circumference of the base of cylinder A is 3 meters and the height of the cylinder is 5 meters. The circumference of the base of cylinder B is 5 meters and the height of the cylinder is 3 meters.
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Answer:
cylinder A is 141.3 meters
cylinder b is 245.5 meters
Step-by-step explanation:
Cylinder a: 3x3x5x3.14
cylinder B : 5x5x3x3.14
There are 15 applicants for four jobs: computer programmer, software tester, manager, and systems engineer.
A) Permutation
B) Combination
C) Circular permutation
Answers
Answer:
The answer is "Option A".
Step-by-step explanation:
[tex]\to ^{15}P_{4} = \binom{15}{4}\\\\[/tex]
[tex]=\frac{15 !}{15-4!}\\\\=\frac{15 !}{11!}\\\\ =\frac{15 \times 14 \times 13 \times 12 \times 11!}{11!}\\\\ = 15 \times 14 \times 13 \times 12 \\\\=32760[/tex]
Answer:
A is the answer the person above is a NERD -_-
Step-by-step explanation:
A solid object is made up of two cubes resting side by side. One cube has an edge length of 5.3 ft, and the other cube has an edge length of 3 ft. What is the volume of the solid object?
Answers
Answer:
2.8
Step-by-step explanation:
Answer:
it's 175.877
Step-by-step explanation:
100% sure
Ewok's favorite candy is a gummy
worm. One gummy worm is 13
inches long: How many gummy
worms will it take to lay them end to
end to have a total length of 45
inches
Answers
Answer:
3.5
Step-by-step explanation:
45 inches divided by 13 inches
gets you 3.4615 but i think you should round up so 3 and a half
This is because 45 divided by 13 equals 3.46153846. That is a VERY long number so you obviously round to the nearest tenth which gives you 3.5. So in the end you would need about 3 and a 1/2 gummy worms to lay them end to end and have a total length of 45 inches. I hope this helps!! (Also that is one really big gummy worm. 13 INCHES?? Hahaha)
Help me with this please
Answers
Answer:
3418.05 (not rounded)
Step-by-step explanation:
Volume = Area * height
V =pi*(8)^2*17
Answer:
i dont know :(
Step-by-step explanation:
Divide 750 into the ratio 2:3
Answers
Answer:
300 : 450
Step-by-step explanation:
sum the parts of the ratio, 2 + 3 = 5 parts
Divide 750 by 5 to find the value of one part of the ratio
750 ÷ 5 = 150 ← value of 1 part of the ratio , then
2 parts = 2 × 150 = 300
3 parts = 3 × 150 = 450
Then 750 in the ratio 2 : 3 = 300 : 450
The required answer is 750 in the ratio 2 : 3 = 300 : 450.
What is Ratio?The ratio is defined as a relationship between two quantities, it is expressed as one divided by the other.
We have to divide 750 into the ratio 2:3
The ratio is given in the question
⇒ 2:3
We can see that the sum of the parts of the given ratio as
⇒ 2 + 3 = 5 parts
Divide 750 by 5 to determine the value of one part of the ratio
So the value of 1st part of the ratio
⇒ 750 ÷ 5 = 150
Now, 2nd parts = 2 × 150 = 300
And, 3rd parts = 3 × 150 = 450
So, 750 in the ratio 2 : 3 = 300 : 450
Therefore, the required answer is 750 in the ratio 2 : 3 = 300 : 450.
To learn more about the Ratio click here:
brainly.com/question/1504221
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Ms. Pacheco wrote the following expression. [7 x (4 + 11)] - 9 What is the value of the expression?
Answers
Answer: 105x-9
Step-by-step explanation:
Sorry love don’t feel like typing the explanation! :(