Maggie wants to buy a new energyefficient refrigerator. Her old refrigerator uses about 1200 kWh per year,while the new one would use about 400 kWh per year. Approximately how much money would Maggie saveper year if she buys the new refrigerator?
Answer:
800 Kwh
Step-by-step explanation:
To solve this problem, we need to find the difference in energy saved and then multiply by the cost of 1kWh of electricity
How much did Maggie save?Let's first of all calculate the the difference in energy saved
Data;
old refrigerator = 1200kWhnew refrigerator = 400kWh[tex]1200 - 400 = 800kWh[/tex]
Maggie would've saved 800kWh in one year.
But since we were not given a standard cost of electricity, we would assume that 1kWh will cost $1.
So, to determine how much she must've saved, we simply multiply $1 by 800kWh
[tex]1 * 800 = $800[/tex]
Using our assumptions, she would've saved $800 in one year.
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Jana scored 45 in her 50 item math test. what is the ratio of her correct to her incorrect answers
Answer:
9 : 1
Step-by-step explanation:
Let the correct answers be denoted by C.
Let the incorrect answers be denoted by I.
Given the following data;
Correct answers = 45 answers
Incorrect answers = 50 - 45 = 5 answers
Ratio of correct to incorrect answers;
C : I = 45 : 5
Dividing by 5, we have;
C : I = 9 : 1
georgia has 45 pencils she places all of the pencils into one or more baskets.
Answer:
one basket release you are dividing then it would be 9
Which expressions are equivalent to 7-2 x 76?
Find (ƒ – g)(x) where ƒ(x) = 2x2 + 5x – 8, g(x) = –x2 + 6x.
A. (ƒ – g)(x) = 3x2 – x – 8
B. (ƒ – g)(x) = x2 + 11x – 8
C. (ƒ – g)(x) = –3x2 + x + 8
D. (ƒ – g)(x) = –3x2 – x + 8
Answer:
A
Step-by-step explanation:
ƒ(x) = 2x2 + 5x – 8
g(x) = –x2 + 6x
(ƒ – g)(x)=2x2+5x-8-(-x2+6x)
=2x2+5x-8+x2-6x
=3x2-x-8
i’m so confused please help
Answer:
BCD = 90˚
ABD = 16˚
CBE = 74˚
ADE = 74˚
AEB = 148˚
DEA = 32˚
Step-by-step explanation:
BCD: I suppose that’s a rectangle, and all rectangles have four right (90˚) angles.
ABD: alternate interior angles are congruent, so ABD is congruent to BDC (16˚).
CBE: Complementary angles add up to 90˚, so just subtract ABD (16˚) from 90˚ to equal 74˚.
ADE: Same this as CBE for same reason.
AEB: You need to find DEC first for this. To find DEC, add BDC and ACD together to get 32˚, then subtract that from 180˚ to find the answer (148˚). This is because all triangles have a 3 interior angle measure sum of 180˚. (And vertical angles are congruent).
DEA: Subtract AEB from 180˚ because they’re supplementary angles.
Hope this helps :)
Question 5 (1 point)
Write an equivalent expression for (m + 4n) - 2.5m
Answer:
-1.5m + 4n is the equivalent expression
Step-by-step explanation:
To find the equivalent expression, we combine the like terms.
We are given the following expression:
m + 4n - 2.5m
Combining the like terms:
m - 2.5m + 4n
-1.5m + 4n is the equivalent expression
What the lcm of 12 and 8
Answer:
24
Step-by-step explanation:
The common multiple that 8 and 12 have in common is 24. This is because 24 is the first multiple of 8 and 12 that is shared
Answer:
The multiples of 8 are: 8, 16, 24, 32, 40, … .
The multiples of 12 are: 12, 24, 36, 48, 60, … .
LCM = 24
Step-by-step explanation:
(PLATO answer)
expand and simplify {3x+2}{x-1}
Answer:
{3x+2}{x-1} = 3x²-x-2
Step-by-step explanation:
The given expression is :
{3x+2}{x-1}
We can solve it as follows :
{3x+2}{x-1} = 3x(x)+3x(-1) +2(x) +2(-1)
= 3x²-3x+2x-2
= 3x²-x-2
So, the expand form of the given expression is 3x²-x-2.
evaluate d+5-f if d +16 and f-18
Answer:
39
Step-by-step explanation:
d+5-f
Plug in the values of d and f
(16)+5-(-18)
Then simplify (Don't forget that since theres a double negative, that changes to a positive.)
21+18
39
What is 9 - g ≥ 3; g = 5
Answer:
(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥
Step-by-step explanation:
(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥
Match the equations to the lines below :
y = 1/2x - 1
y= -1/2x + 1
y= 1/2x + 1
y= -2x - 1
y= 2x - 1
y= -1/2x - 1
lines a and b are parallel If the slope of the line a is 1/4 . what is the slope of line b ?
10. Given f(x) = 3x2 – 3x + 5 and g(x) = -7x + 4, find (f - g)(x).
A. 3x2 - 10x + 9
B. 3x2 + 4x + 9
C. 3x2 - 10x + 1
D. 3x2 + 4x + 1
Step-by-step explanation:
(f - g)(x)
= f(x) - g(x)
= (3x² - 3x + 5) - (-7x + 4)
= 3x² - 3x + 5 + 7x - 4
= 3x² + 4x + 1. (D)
Juan bakes 5 1/ 2 dozen rolls. He sells 1 3/4 dozen rolls. How many dozen rolls does he have left to sell?
A: 7
B: 4 1/2
C: 3 3/4
D: 3 1/2
Answer:
ju4n bakes some j16s
Step-by-step explanation:
so, if [tex]\neq \sqrt{x} x^{2}[/tex] is a dozen roll, then he has 3 3/4 left to sell
C. 3 3/4
Answer:
3 3/4
Step-by-step explanation:
let me know if im wrong or not ok?
Find the product. Simplify your answer. 2/5 • 1/3 Enter the correct answer.
Answer:
2/15
Step-by-step explanation:
2/5*1/3=2/15
Please help me with this please!!
Answer:
D
Step-by-step explanation:
What is the total price of a $45 pair of jeans after a 6.5% sales tax is added?
show ur work
Answer:
47.93
Step-by-step explanation:
45*.065=2.925
2.92+45=47.93
Hope this helps :)
4e + 7e +5
Constants
Raj weighs a book and rounds the weights to the nearest tenth. Does this weight round to 1.5 pounds?
1.52
Answer:
True
hope this helps :)
A cuboid is of dimensions 50 cm x 64 cm x 20 cm. How many small cubes of side 4
cm can be placed in the given cuboid?
Answer:
answers..... from my side
Evaluate 7 + x(-3)
When x = -6
Answer: 25
Step-by-step explanation:
7 + -6(-3)
7 + 18 = 25
Answer:
25
Step-by-step explanation:
x= -6
7+ -6(-3)=
7+ (18)=25
25
cut a 60 cm ribbon into such that one part is one third of the other half
Answer:
15cm and 45cm
Step-by-step explanation:
If one part is one third of the other, then the long one is three times as long as the short one.
If the short one has length x
x + 3x = 60cm
4x = 60cm
x = 15cm
So short one is 15cm and the long one is 3*15cm = 45cm
 what is the distance between (3,10) and (3, -8) on a coordinate grid? First one to answer gets 41 points and brainlist
Responder:
Aproximadamente 13,4 unidades.
Explicación paso a paso:
Para encontrar la distancia entre dos puntos, use la fórmula de la distancia. La fórmula de la distancia es:
x₁ e y₁ es una coordenada mientras que x₂ e y₂ es la otra.
Sea (-3,10) x₁ y y₁ y sea (3, -2) x₂ e y₂. Inserta los números y simplifica:
Editar: error tipográfico
Answer:
13, 4
Hope this helped :))))
140 % of what number is 14?
0.1
19.6
10
0 1,000
Help
Answer:
10
Step-by-step explanation:
I simply divided 140/14 and got 10! Hope this helps :)
The 140 percentage of the number 10 is 14
Given data ,
To find the number that is 140% of another number, we can set up the equation:
140% of x = 14
So , 140 percentage of the number x = 14
To solve for x, we need to convert 140% to its decimal form, which is 1.40:
1.40 * x = 14
Now we can solve for x by dividing both sides of the equation by 1.40:
x = 14 / 1.40
Dividing 14 by 1.40 gives us:
On simplifying , we get
x = 10
Therefore , the value of x = 10
Hence , 140 percentage of 10 is equal to 14
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What is the product of (-3x2/3) and (4x3/4)?
Answer: - 1/x or [tex]-\frac{1}{x}[/tex]
Step-by-step explanation:
(-3x^2 /3 ) * (4x^3 / 4)
=> - (3x^3 / 4) * (4x^3 / 3)
=> - (x^2 * 4) / 4x^3
=> - (x^2 / x^3)
=> - 1/x or [tex]-\frac{1}{x}[/tex]
The product of the two numbers will be -6.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the two numbers are (-3x2/3) and (4x3/4).
To find the product of (-3 * 2/3) and (4 * 3/4), we first need to simplify each expression:
(-3 x 2/3) = -2
(4 x 3/4) = 3
Next, we multiply the two simplified expressions:
-2 x 3 = -6
So, the product of (-3 * 2/3) and (4 * 3/4) is -6.
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How many triangles can be constructed with sides measuring 15 cm, 7 cm, and 5 cm?
more than one
none
one
Answer:
More than one
Step-by-step explanation:
Trust me, I know.
Answer:
none
Step-by-step explanation:
i have proof i just took the test
A center-pivot sprinkler system operated by Colorado Land & Agriculture, Inc., is used to water the alfalfa in a circular field. The circumference of the field is 2 miles. As the sprinkler travels in an arc around the field, sprinkler nozzles get clogged and must be cleaned. The distance around the circumference of the field from the starting point to the point when a nozzle becomes clogged is the value of a random variable X that is uniformly distributed over the 2-mile circumference of the field. As a part of a simulation comparing farm maintenance policies, an input is the point at which sprinklers become clogged. If a random number 0.724 is generated, at what distance from the starting point would we simulate that a nozzle becomes clogged? Give your answer to 3 decimal places.
Answer:
The answer is "1.448 miles".
Step-by-step explanation:
X= The distance to both the nozzle clogged from of the starting point.
X [tex]\sim[/tex] Uniform(0,2) miles.
They are simulating the random number Y=0.724, and the Y has both a distribution uniform(0,1). Therefore 2Y is distributed evenly (0.2). And They model the clogging of its nozzle at 2Y=1.448 miles
A number equals four less than three times the number.
How do you write this equation
Answer:
n = 4 - 3
Step-by-step explanation:
What percentage is 20 of 92?
Answer:
21.72% is correct answer
Answer:
18.4
Step-by-step explanation: