Answer:
28 kwh
Step-by-step explanation:
given that the care can travel 5 miles on 1 kwh, i.e
5 miles travelled -----> uses 1 kwh
hence to find the unit rate:
1 mile travelled ----> Uses 1 kwh ÷ 5 = 1/5 kwh
We are also given that Helen lives 70 miles away from her aunt.
Hence a return trip (i.e "to aunts house and back"), will be 70 x 2 = 140 miles
using the unit rate that we found above, we can find the number of kwh that is used to travel 140 miles
140 miles = 140 miles x unit rate
= 140 x 1/5
= 28 kwh
Two pairs of socks and a pair of slippers cost $30. Five pairs of socks and a pair of slippers cost $42. Let u
represent the cost of a pair of socks and let y represent the cost of a pair of slippers.
Identify the system of equations that represents the situation and identify the solution to the system of equation.
Answer: See explanation
Step-by-step explanation:
The information given in the question can be turned into an equation as:
2u + y = 30 ........ i
5u + y = 42 ........ ii
Subtract i from ii
3u = 12
u = 12/3 = 4
A pair of socks cost $4
Since 2u + y = 30
2(4) + y = 30
8 + y = 30
y = 30 - 8 = 22
A pair of slippers cost $22
How many mathematicians discovered the Law of Sines?
If two sides and a angle are given, then this can be used to find a second angle. With being given the measurements of two sides and an angle, this could result in one or two triangles. Johannes von Muller was the one who was discovered the Law of Sines
I need help please and thank you
Answer: The answer is D because all the other statements are false but DAB is equal to BCD
What is the measure of angle P?
Answer:
60
Step-by-step explanation:
step 1: 180°-130°= 50
step 2: 180-110= 70
step 3: 70+50= 120
step 4: 180°-120°= 60
What is the value of ?
86°
84°
?
360
Helpppo !
What is the value of x and y?
Answer:
8x, 5y
Step-by-step explanation:
a dunno if thats wha ya meant but theres already an answer filled in there a think
If 4 cooks can prepare a buffet in 15 mins how long would it take 6 cooks
Answer:
it will probably take the same amount of time since they are cooking the same amount and the food doesn't take any less to cook if there's more people but they could tidy and bring the food out faster but the time to cook the food will remain the same.
Which of the following are valid names for the triangle below? Check all that
apply.
A. A MODE
1 B. ARM
C. ASEM
DD. AMRD
E. ARMO
F. ADMR
Plz help !!!
I’ll give crown you
Answer:
n(a): 6
n(a b): 4
n(a c) : 10
n (a b c): 8
n (a b c): 8
n (a b c): 8
Hope it helps :) Brainliest pls
Order the following ratios from least to greatest: 3/4,2:3,5 to 6
Answer:
2:3; 3/4; 5 to 6
Step-by-step explanation:
✩brainliest appreciated✩
What is the value of y=5x+3 when x = 3
Answer:
y = 5(3)+3
= 15 +3
= 18
y = 18
hope it's helpful ❤❤❤❤
THANK YOU.
IF ANSWER IS RIGHT I WILL MARK BRAINLIEST The length of one side, s, of a shipping box is s ( x ) =cube root of 2x , where x is the volume of the box in cubic inches. A manufacturer needs the volume of the box to be between 108 in.3 and 256 in.3. What are the minimum and maximum possible lengths of s?
Answer:
6 in and 8 inStep-by-step explanation:
Given
The length of the side:
s = ∛2xVolume of the box:
xThe volume is between 108 in³ and 256 in³:
∛(2*108) ≤ s ≤ ∛(2*256)∛216 ≤ s ≤ ∛5126 ≤ s ≤ 8As above, the minimum length is 6 in and maximum length 8 in
Questions 5-8 I'm very confused on this Determine which tables are linear and tell me the slope for each
Apply the Pythagorean Theorem to find the distance between points A and C.
A)
129 units
B)
V40 units
C)
158 units
D)
V116 units
Answer:
a
Step-by-step explanation:
PLS HELP ME ASAP I DONT HAVE TIME. IT ALSO DETECTS IF ITs RIGHT OR WRONG.
Answer:
It should be C because of the given information is just (any) x 2
Step-by-step explanation:
Write the equation of the line that is parallel to y+2=5(x-1) and passes through the point (-1, 0)
Answer:
Step-by-step explanation:
slope of required line=5
point is (-1,0)
reqd. eq. of line is
y-0=5(x-(-1))
y=5(x+1)
y=5x+5
In ΔKLM, l = 2.4 inches, m = 4.2 inches and ∠K=159°. Find the length of k, to the nearest 10th of an inch.
Answer: 6.5
Step-by-step explanation: just trust me
The length of side k is approximately 6.56 inches.
What is Law of Cosines?A planar triangle's side's square is equal to the sum of the squares of the other sides minus the product of those sides and the cosine of the angle between them, divided by two.
We can use the Law of Cosines to find the length of side k:
k² = l² + m² - 2lm cos(K)
where K is the angle opposite side k.
In this case, we have l = 2.4 inches, m = 4.2 inches, and K = 159°. Substituting these values into the formula, we get:
k² = (2.4)² + (4.2)² - 2(2.4)(4.2)cos(159°)
Using a calculator to evaluate the cosine, we get:
k² = 5.76 + 17.64 - 19.96(-0.987688)
k² ≈ 43.11
Taking the square root of both sides (and rounding to the nearest tenth), we get:
k ≈ 6.56 inches
Therefore, the length of side k is approximately 6.56 inches.
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Damell had 27 coins in his pocket. He lost some. Write an expression that shows how many coins Darell lost.
A.27 -
B. n - 27
C. 27+n
D.n+27
Answer:
esl b comafio qe vasu slair beniaen
Step-by-step explanation:
The area of a triangle is formed by points of intersection of parabola y=a(x-3)(x+2) with the coordinate axes is 10. Find A if it is known that parabola opens upwards
Answer:
2/3
Step-by-step explanation:
Answer:
a=2/3
Step-by-step explanation:
1. y=a(x-x1)(x-x2) is a formula for a parabola, x1 and x2 being points where y=0 so in the equation y=a(x-3)(x+2), you know
x1=3, x2=-2
2. Find distance between 3 and -2, which is 5
3. bh/2=A --> 5h/2=10 --> h=4 (h is height)
4. when x=0, y=-6a, y=a(0-3)(0+2)
5. because parabola opens upward, the point of the vertex must be (_, -4)
6. -6a= -4
a=2/3
The graph represents the amount of money Sal earns for babysitting.
Graph where the x- axis gives time in hours and runs from zero to three and beyond. The y- axis gives earnings in dollars and runs from zero to twenty four and beyond. A straight line intersects the axes at (0, 0). Its coordinates are (5, 4), (1, 8), (1.5, 12), (2, 16), and (2.5, 20)
Part A
What does the ordered pair (2.5, 20) represent in the situation?
A. $2.50 for 20 hours
B. $1 for 0.125 hours
C. $0.125 for 1 hour
D. $20 for 2.5 hours
Part B
Does the graph represent a proportional relationship? Explain.
A.
Yes. The line passes through the origin.
B.
Yes. The line has a variable rate of change.
C.
No. The slope is not constant.
D.
No. The line has a y-intercept greater than 0.
Part C
What is the linear equation represented by the graph?
A. y = 20x + 2.5
B. y = 2.5x + 20
C. y = 8x
D. y = 0.125x
Answer: d, a, and c
Step-by-step explanation:
Part(A)
The ordered pair (2.5, 20) represents $2.50 for 20 hours. the correct option is A.
Part(B),
Yes. the line passes through the origin. The correct option is A.
Part(C),
The linear equation represented by the graph is y = 8x. The correct option is C.
What is an equation of the line?An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.
The general form of the equation of the line:-
y = mx + c
m = slope
c = y-intercept
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given that coordinates are (0.5, 4), (1, 8), (1.5, 12), (2, 16), and (2.5, 20).
Part(A),
The ordered pair (2.5,20) represents that the earning is $20 for the work of 2.5 hours.
Part(B),
The slope of the line will be calculated as,
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
Slope = ( 8 - 4 ) / ( 1 - 0.5 )
Slope = 4 / 0.5
Slope = 40 / 5
Slope = 8 hours
The y-intercept is calculated as,
y = mx + c
16 = ( 2 x 8 ) + c
c = 16 - 16
c = 0
Hence, the line passes through the origin.
Part(C),
The equation of the line will be written as,
y = mx + c
y = 8x + 0
y = 8x
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The Pythagorean Theorem Homework What is the side length of the triangle? 10 cm. 26 cm.
help anyone?
i will give brainliest
Answer:
Use desomos i can drop a link for you that will help all your graphing problems
Step-by-step explanation:
Go to desmos . com slash calculator!
Please help!! I don’t understand how to solve this
Answer:it is c
Step-by-step explanation:
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Explain why you cannot factor the trinomial x2 – 15x + 3
A. There are no factors of 3 that add up to -15
B. It can be factored
C. There are no factors of -15 that add up to 3.
Answer:
there are no factors of -15 that add up to 3
Answer:
It is A trust me
Step-by-step explanation:
how do you even do this???
Dell Tim and tommy ordered a pizza that was cut into 12 pieces dell had one piece Tim had 3 pieces and tommy had 4 pieces how much of the pizza did they eat
Answer: they had 7/12 or 7 slices out of 12 slices
Step-by-step explanation:
7 is a prime number so you can't a simplify the fraction and the denominator is 12 and 3 plus 4 is 7 which is the numerator
Alana is buying bottled water for a class trip. She has 16 bottles left over from the last trip. She buys bottles by the case to get a good price. Each case holds 24 bottles. How many cases will she have to buy if she wants to have a total of 160 bottles of water?
please help I'm so confused pls look at picture
Answer and Step-by-step explanation:
Hello!
You are told to round the number to the nearest whole number.
That means if the decimal is lower than 5 in the tenths place, the number would round down, and if the decimal is equal to or higher than 5 in the tenths place, the number would round up.
[tex]5\frac{5}{6}[/tex] is equal to 5.833. The number 8 is greater than 5, so the number rounds up to 6.
[tex]6\frac{1}{9}[/tex] is equal to 6.111. The number 1 is less than 5, so the number rounds down to 6.
Now we have the equation n - 6 = 6.
We solve for n.
Add 6 to both sides.
n = 12
n is equal to 12.
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Maria calculate that she could make 18,000 over the summer instead she ended up making 15,000 what is the percentage difference? round your answer to the nearest percent
Answer:
20%
Step-by-step explanation:
Maria calculate that she could make 18,000 over the summer instead she ended up making 15,000 what is the percentage difference? round your answer to the nearest percent
The formula for Percent difference =
Difference/ Original value × 100
Difference is calculated as:
18000 - 15000 = 3000
Original value = 15000
Hence:
3000/15000 × 100
= 20%
Percent difference = 20%
35/16 as a percentage to the nearest 10th
Answer:
35/16 × 100= 875/4% = 218.75 %
Decimal form ≈ 2.2