Answer:
c
Step-by-step explanation:
A bag of flour weighs 15 kg. A baker has one bag of flour. She uses 1.065 kg every day. How much flour does she use in 8 days? How much flour is left over after 8 days?
Answer:
She uses 8.52 kgs of flour in 8 days
There are 6.48 kgs of flour left over after 8 days.
Step-by-step explanation:
First, you need to multiply 1.065 by 8 to get how much flour she uses in 8 days.
1.065 times 8 is 8.52. She uses 8.52 kgs of flour in 8 days.
Now, to get how much flour is left over after 8 days, you need to subtract 8.52 from 15 kgs.
15 - 8.52 = 6.48 kgs.
PLEASE HELP
The filament of a car headlight is a thin wire that glows when electricity passes through it. Parabolic reflectors with a filament at the focus send light out in a straight beam. The cross section of a 2 inch deep headlight reflector has the equation y2=6x.
A. Draw a sketch of this situation. Include the location of the focus in your drawing.
B. How wide is the beam of light projected from the headlight's reflector? Show all work and give your answer as a decimal rounded to hundredths place.
Answer:
A. Please find attached the drawing of the reflector showing the location of the focus created with Microsoft Excel
B. The width of the beam of light projected from the headlight's reflector is approximately 6.93 inches
Step-by-step explanation:
The given equation representing the cross section of the headlight reflector is y² = 6·x
The shape of the reflector = Parabolic
The general equation of a parabola is (y - k)² = 4·p·(x - h)
The focus of the parabola, Focus = (h + p, k)
By comparison to the general equation of a parabola, from the equation of the reflector, we have;
k = 0, h = 0, 4·p = 6
∴ p = 6/4 = 3/2 = 1.5
∴ The focus of the parabola = (1.5, 0)
A. Please find attached the graph of the equation of the cross-section of the reflector, showing the filament at the focus, created with Microsoft Excel
B. The depth of the reflector is x = 2 inches
A vertical or horizontal parabola has two x-values for a given y-value or two y-values for a given x-value respectively
For the given horizontal parabola, the width of a parabola at a point is the difference between the two y-values at the point
At x = 2, we have;
y² = 6 × x = 6 × 2 = 12
∴ y = ±√(12)
The two y-values at x = 2 are y₁ = √(12) and y₂ = -√(12)
The width of the parabola, w = y₁ - y₂
The width of the parabola at x = 2, w = √(12) - (-√(12))
∴ w = √(12) +√(12) = 4·√3
The width of the parabola at x = 2, w = 4·√3 inches
The width of the parabola at x = 2 = The width of the beam of light projected from the headlight's reflector = 4·√3 inches
By giving the answer as a decimal and rounded to the hundredths place, we have;
The width of the beam of light projected from the headlight's reflector ≈ 6.93 inches.
is .849 greater than .90
Answer:
NO it isnt.
Step-by-step explanation:
Go right of the decimal and throught the different place values. Since the number just right of the decimal is the highest place value, whichever number is greater, holds the greater value.
Solve this problem please.
Answer:
Step-by-step explanation:
i dont know
Answer:
y = -1/2x+5
Step-by-step explanation:
South Street: y = 2x-4
Perpendicular slope to 2 is -1/2
Find any point on new street: (2,4)
4 = -1/2(2) + b
4= -1 + b
5 = b
guyssss ANYONEEE PLSSS!!!!!I NEED HELP LIKE ACTUALLY
Answer:
infinite number of solutions
What is the perimeter of this tile
3in 3in
Is it in or in^2
Answer:
12
Step-by-step explanation: each side is 3, and there are 4 sides so 3*4=12
Each piece of cardboard is 0.3 centimeters thick. If Tyler stacks 5 pieces of cardboard on top of one another, how thick will the stack be?
Answer:
1.5 inches thick
Step-by-step explanation:
Find the area of the rectangle.
A = [? ] cm2
6 cm
9 cm
Answer:
54 cm2
Step-by-step explanation:
A = l * b
A = 6 * 9
A = 54
Please mark my answer as brainliest for further answers:)PLS HELP ASAP Find the volume of the hemisphere. Round to the nearest tenth.
the hemisphere ft(or radius i guess) is 4
Answer:
If the radius is 4, then:
Volume = 1/2(4/3)(π)(r³) = 1/2(4/3)(3.14)(4³) = 134.0 ft³
For brainiest:):):):):)
Answer:
254.34
Step-by-step explanation:
Area of a circle = pi*r² So the radius is diameter/2 which is 9, so the area is pi*81 which is 254.34
14. 254.47
EXPLANIACTION
A=(3.14/4) * 18^2
Plz helppp I’m not so smart:)
Step-by-step explanation:
I think you will get x this way:
x=180°-140°
x=40°
Which phrase from the text most clearly explains the main idea of the third paragraph? (5 points)
Memory uses general knowledge
Other memories and other stories
When telling a friend about the event
Rather than the actual participant
Answer:
is there an image of the story?
Answer:
A. Memory uses general knowledge
I deeply apologize if it's wrong but that's just what I think.
Also, I just took the test with this question and I'm pretty sure I got it correct.
I need help please! I don’t understand.
does anyone know the answer for this problem :P
Answer:
A: 6x^2 + 19x + 3
Step-by-step explanation:
6x + 1 (x +3)
use the foil method so first do 6x(x) and you get 6x^2 then 6x(3) + x(1) and you get the 19x then you just do 3(1) and you get your answer which as stated above is 6z^2 + 19x + 3
CAN I PLEASE HAVE SOME HELP
Answer:
I am pretty sure it's A and I am very sorry if I'm wrong
Step-by-step explanation:
The way I would think about this question is this: because Jordan only wants to work a maximum of 40 hours, he can work 40 hours or less. Which is described as an equation in the top equation of letter A. And because he also wants to make $250 or more, the bottom equation in A would work as well.
I hope that makes sense! Please ask me in the comments if you want more explanation on it
if a cone has a volume of 28.63 and a diameter of 4.5 what is the height
Answer:
height = 5.4 units
Step-by-step explanation:
r = 4.5/2 = 2.25
B = πr² = 3.14(2.25²) = 15.90
V = 1/3Bh
28.63 =1/3(15.90)h
85.89 = 15.90h
h = 5.40 units
use exterior angle measures to solve for h
Answer:
h = 125
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles, that is
h = 63 + 62 = 125
Emily's snack allowance at school exceeds $7. Her snack allowance is one-fourth of her monthly allowance. Write and solve an inequality to determine a, what could be Emily's monthly allowance?
Answer:
x>28
Step-by-step explanation:
x>7
4x>28
Ming took a cab across town. His fare was $22, and he leaves an 18, percent tip.
What is the total amount Ming pays the cab driver?
Answer:Ming pays $25.96 to the cab driver.
Step-by-step explanation:
Ming took a cab across town, his fare of cab = $22.00
He leaves a tip of 18% of total fare = 18% of $22.00
Total amount = (18% of $22) + $22.00
( 18/100× 22) + 22.00
= (0.18 × 22) + 22.00
= 3.96 + 22.00
= $25.96
Ming pays $25.96 to the cab driver.
Q Review / Finish Test
Tools -
ABC
Question 3
Theo is an athletic trainer who works with high school football and baseball players. This clients, 40% play football, and the rest play baseball. Of the students who play football, 30% are on the varsity team,
while 50% of Theo's baseball clients are on the varsity team. What percent of Theo's clients are on the varsity team?
The percentage of Theo's clients are on the varsity team will be 27%
What will be a percent of Theo's clients are on the varsity team?It is given in the question that
clients, 40% play football
clients, 60% play Baseball
Of the students who play football, 30% are on the varsity team,
50% of Theo's baseball clients are on the varsity team.
So clients who play football and are on the varsity team will be
[tex]0.4\times 0.3=0.12[/tex] = 12%
And clients who play baseball and are on the varsity team will be
[tex]0.6\times 0.5=0.15[/tex]=15%
The total percent of the varsity team will be =12+15=27%
Thus the percentage of Theo's clients are on the varsity team will be 27%
To know more about percentage follow
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Carlos wants to go on a road trip to Jacksonville, Florida.
For every gallon of gas, his car travels m miles
He will travel 500 miles to Jacksonville.
Gas costs $3.65 per gallon.
Which expression shows how much Carlos will spend for gas on the trip to Jacksonville?
a) 500(3.65m) c) 3.65(m/500)
b) 3.65(500/m) d) 500(1/3.65m)
QUICK PLEASE!
b)3.65(500/m)
Hope this helps
What is the distance between the points (3, 4) and (3, -7)
Answer:
distance is estimated 11
Here is the histogram of a data distribution.
5 4 3 2
1'2'34'5'6'7'8'9 '10
Which best describes the shape of this distribution?
O A. Bimodal symmetric
B. Bimodal skewed
O c. Uniform
O D. Unimodal skewed
O E. Unimodal symmetric
The given histogram is unimodal skewed.
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
This histogram is unimodal skewed.
There are two parts to this answer. The first part has to do with the number of modes.
This would be the item that is occurring the most frequently. In this case the mode is only 4.
It is occurring more than any other.
The second part of this has to do with the distribution of the data as it is displayed on the histogram.
There are 4 pieces of data that are only occurimg one time on the right of the histogram. We call this skewing the data.
When both sides looks almost the same we say it is symmetric.
Hence, the given histogram is unimodal skewed.
To learn more on Graph click:
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#SPJ7
76.57143 nearest tenth
Answer:
76.6
Step-by-step explanation:
so the nearest tenth is 76.57143
Answer:76.6
Explanation:
Rena used the steps below to evaluate the expression (StartFraction (x Superscript negative 3 Baseline) (y Superscript negative 2 Baseline) Over 2 (x Superscript 4 Baseline) (y superscript negative 4 Baseline) EndFraction) Superscript negative 3, when x = negative 1 and y = 2.
Step 1:
Substitute x = negative 1 and y = 2 into the expression.
(StartFraction (negative 1) Superscript negative 3 Baseline (2) Superscript negative 2 Baseline Over 2 (negative 1) Superscript 4 Baseline (2) superscript negative 4 Baseline) EndFraction) Superscript negative 3
Step 2:
Simplify the parentheses.
(StartFraction (2) Superscript 4 Baseline Over 2 (negative 1) Superscript 4 Baseline (negative 1) cubed (2) squared EndFraction) Superscript negative 3 Baseline = (StartFraction (2) squared Over 2 (negative 1) Superscript 7 Baseline EndFraction) Superscript negative 3
Step 3:
Evaluate the power to a power.
StartFraction (2) Superscript negative 6 Baseline Over 2 Superscript negative 3 Baseline (negative 1) Superscript negative 21 baseline EndFraction
Step 4:
Use reciprocals and find the value.
StartFraction 1 Over 2 cubed (2) Superscript 6 Baseline (negative 1) Superscript 21 Baseline EndFraction = StartFraction 1 Over 8 times 64 times (negative 1) EndFraction = Negative StartFraction 1 Over 512 EndFraction
In which step did Rena make the first error?
Answer:
c) Step 3
Step-by-step explanation:
Answer:
Its D
Step-by-step explanation:
the person above me is wrong :)
If t represents the amount of time Neda has spent typing the second letter, which equation states the rule used to determine the number of words, W, Neda has typed today?
Answer:
W = t + 200
Step-by-step explanation:
Number of words typed in the first letter = 200
The relationship between the total words typed, W and the number of seconds, t spent on the second letter :
W = number of words typed in first letter + t
W = 200 + t
Choosing any pair of values from the table :
W = 245 ; t = 45
W = 200 + 45
W = 245
Therefore, the number of words, W typed today can be represented as
W = 200 + t
Help???? I don’t know which one it is
Answer:
A
Step-by-step explanation: Rreminder be happy and stay confident <3
Since multiplication is implied algebra we often don't need to actually write the times symbol ‘×'. Re-write this algebraic equation without the times symbol. a × b = 4 × c
Answer:
ab=4c
Step-by-step explanation:
Since a and b are being multiplied, we can just right ab. Since 4 and c are being multiplied, we ca just right 4c.
Answer:
ab=4c
Step-by-step explanation:
Basically, if you see any variables that are together like that or numbers side by side with letters, it means it's just being multiplied! This doesn't however, work with numbers next to numbers. So for example:
Say you have a x b = 5 x 5c
It would be ab = 5 x 5c Because only letters get put next to each other. That's really the only way I know how to explain it. Have a great day and good luck!
Solve for x and show your work! For each equation choose if there are:
• zero solutions for x • exactly one solution for x • or an infinite number of solutions for x.
3x + 5 = 7 + 3x
2(3x + 9) = 18 + 6x
Can some one help me its due today please help im struggling!!!
Answer:
Problem 27: 35
Step-by-step explanation:
This is because 7 times (Multiplied) by 9-4 is 35. We get here by doing 9-4=5. This problem then turns into 7(5)