Answers
Related Questions
a parabolic lamp is facing due east. The bulb (located at the focus) is 8 inches away from the vertex (located at the origin). the lamp has a diameter of 20 inches. Which is the depth of the dish?
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9514 1404 393
Answer:
3 1/8 inches
Step-by-step explanation:
For focus-vertex distance p, the equation of the parabola can be written ...
y = x^2/(4p)
Here, we have p=8. We want to find the value of y when x=10 (the radius of the dish). That is ...
y = (10^2)/(4·8) = 100/32 = 3 1/8
The dish is 3 1/8 inches deep.
simplify 5a+7b-12a+6c-13b-22a+53c
Answers
Answer:
−29−6+59
Step-by-step explanation:
Help it’s an easy question I’m just dumb please help me!
Find the x-intercept of the rational function.
A. (0,-2)
B. (-2,0)
C. (0,5)
D. (5,0)
Please explain how you got your answer. Thanks
Answers
Answer:
c
Step-by-step explanation:
c i think
Ricky and Sam each bought a remote control car for $80. A few months later they both sold it. Ricky sold his car for 25% less than the original price and Sam sold his car for 30% less than the original price. How much more did Ricky get than Sam?
Answers
Answer:
4
Step-by-step explanation:
25/100 x 80/1 = 20/1
80 - 20 = 60
30/100 x 80/1 = 24/1
80 - 24 = 56
60-56=4
Grace wants to frame a square picture which has a area of
950 square inches.
How long is each side of the picture?
She has another square picture with an area of 1200 square inches.
How long is each side of this picture?
Answers
Answer:
First Picture: Length = 30.82in
Second Picture: Length = 34.64in
Step-by-step explanation:
Given
Picture 1:
Area = 950in²
Picture 2:
Area = 1200in²
Required
Determine the length of each pictures
From the question, we understand that both pictures are square in shape and the area is calculated as thus:
Area = Length²
For the first picture, substitute 950 for Area
This gives:
950 = Length²
Length ² = 950
Take square root of both sides
Length = √950
Length = 30.8220700148448822
Length = 30.82 (approximated)
Hence, the length of the first picture is 30.82in
For the second picture, substitute 1200 for Area
This gives:
1200 = Length²
Length² = 1200
Take square root of both sides
Length = √1200
Length = 34.6410161513775458
Length = 34.64 (approximated)
Hence, the length of the second picture is 34.64in
Convert 156% to a decimal
Answers
Answer:
1.56
Step-by-step explanation:
156 divided by 100
Answer:
1.56
Step-by-step explanation:
To convert a percentage to a decimal, you must divide the number by 100 because percentages are out of 100. 156 percent can also be written as 156/100 which you can simplify to 1.56.
A line passes through the point (-10, -2) and has a slope of
3/2
Write an equation in slope-intercept form for this line.
Answers
The equation of this line in slope intercept form is y = 1.5x + 13.
What is slope intercept form?The slope-intercept form of a straight line is used to find the equation of a line. For the slope-intercept formula, we have to know the slope of the line and the intercept cut by the line with the y-axis.
Equation of line: y = mx + c
where m is slope of line and c is the y intercept.
[tex]\frac{y+2}{x+10} = \frac{3}{2}\\ \\ 2(y+2) = 3(x+10)\\\\2y + 4 = 3x + 30\\\\2y = 3x + 26\\\\y = 1.5x + 13\\\\where\ slope = 1.5\ and\ y\ intercept\ is\ (0,13)[/tex].
Learn more about slope intercept form here
https://brainly.com/question/9682526
#SPJ3
Which of the following is a linear function?
А
B
C
D
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Answer:
d
Step-by-step explanation:
..................
About plants:
so photosynthesis produces oxygen as a waste product, but then respiration uses oxygen to produce carbon dioxide, so like doesnt that 'cancel' each other out? im confused if plants are actually helpful or not (oxygen wise)
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HOW DO I DO THIS PLEASE SOMEONE SOLVE IT AND I WILL MARK BRAINLIST!! PLEASE ITS DUE TODAY. LOOK AT THE IMAGE ABOVE
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For the rectangle, 10 is 1 2/3 times greater than 6, so x is 12 times 1 2/3, which is 20. You can also think of it as 12 is 2 times 6 on the left rectangle, so x on the right rectangle is 2 times 10
For the triangle, the corresponding sides are NP and XZ, and XZ is 13 times as large as NP. The corresponding side to PO is ZY, and 7 times 13 is 91, so w is equal to 91.
The head coach ordered 8 pizzas and 3 orders of pasta for her team, costing a total of $120. The JV coach ordered 6 pizzas and 4 orders of pasta for his team, costing a total of $104. Let x, be the cost of pizza, and y be the cost of the pasta.
a) What is the price for a single pizza? and single order of pasta? Show your work for full credit.
PLEASE HELP ME
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Answer:
x = 12 and y = 8
Therefore:
1 pizza = $12
1 pasta = $8
Step-by-step explanation:
The total cost in dollars to buy uniforms for the players on a volleyball team can be found using the function C equals 34.95 you +6.25 where you is the number of uniforms but if there are at least eight players but no more than 12 players on the team what is the domain you of the function for this situation
Answers
Answer:
8 ≤ u ≤ 12
Step-by-step explanation:
Given:
C = 34.95u +6.25
Where,
u = number of uniforms
what is the domain you of the function for this situation
The number of uniforms depend on the number of players
If there are at least 8 players but not more than 12 players on the volleyball team.
u ≥ 8
u ≤ 12
The domain of the function is
8 ≤ u ≤ 12
What does the area of any shape tell us??
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The area of a shape tells you the amount of space inside. The perimeter tells you how long the outline is. This is what the area and perimeter tell you.
Hope this helps you!
The units digit of a two-digit number is four more than the tens digit. If the number is doubled, it will be one more than the reversed number. Find the number. (Number: 32 Reversed number: 23)
Answers
Answer:
37
Step-by-step explanation:
2-digit number: 10x + y
y = x + 4
20x + 2y = 10y + x + 1
8y = 19x - 1
8x + 32 = 19x - 1
11x = 33
x = 3
Number: 37
Answer:
Answer:
37
Step-by-step explanation:
2-digit number: 10x + y
y = x + 4
20x + 2y = 10y + x + 1
8y = 19x - 1
8x + 32 = 19x - 1
11x = 33
x = 3
Number: 37
-11/16 what is that lol i’m so lost
Answers
-11/16 = -0.6875
What part are you lost on, do you want me to teach you how to divide them?
Answer:
-0.6875
Step-by-step explanation:
-11/16 = -0.6875
(positive and negative numbers multiplied/divided give a negative number)
5) y=-2
4x – 3y = 18
This
Answers
Answer:
x=3
Step-by-step explanation:
if y is -2, 3*-2 =-6, 4x-(-6) = 4x+6=18
18-6=12
12/4=3
x=3 I hope you learned something
what do u call girl giving away 100 points and nothing to do?
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Answer:
i dont know but thanks for the points
Step-by-step explanation:
15(2x + 2) = 10(3x + 4)
Answers
Answer:
No Solutions
Step-by-step explanation:
If you simplify the equation, you would get 30x + 30 = 30x + 40, which if you subtract 30x, you would get 30 = 40, which means that there are no solutions, because no amount for x would balance this equation.
Hey can you please help me
Answers
B= 4
Dashed below
PLEASE HELP! What is the volume of the pyramid shown below?
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V=1/3Bh
Since the base of the pyramid is a square, the base area is 11^2
which equals 121 sq. units
So, substitute 121
for B
and 6 for h, in the formula.
V=1/3(121)(6) = 242 cu. units
Or alternatively 1/3(11^2)(6) = 242 cu. units
Answer:
242 cubic units
Step-by-step explanation:
Reasoning How can you find the slope of the
line that passes through the points (0, 0) and
(2, 4)? Explain.
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help pls need help. :) :)
Answers
S^3+12
S= 4
4^3+12
64+12= 76
76 ft cubed
I hope this is right!
What is the solution to the following system of equations?
x - 2y = 6
y = 11 - 3x
Answers
Answer:
(4, -1)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define systems
x - 2y = 6
y = 11 - 3x
Step 2: Rewrite systems
Define: x - 2y = 6Add 2y on both sides: x = 2y + 6x = 2y + 6
y = 11 - 3x
Step 3: Solve for y
Substitute in x: y = 11 - 3(2y + 6)Distribute -3: y = 11 - 6y - 18Combine like terms: y = -6y - 7Add 6y on both sides: 7y = -7Divide 7 on both sides: y = -1Step 4: Solve for x
Define: x - 2y = 6Substitute in y: x - 2(-1) = 6Multiply: x + 2 = 6Subtract 2 on both sides: x = 4Answer:
x=4 y=-1
Step-by-step explanation:
x-2(11-3x)=6
x-22+6x=6
7x-22=6
7x=22+6
x=28/7
x=4
-----------------------------
y=11-3(4)
y=11-12
y=-1
The shape below has both reflectional and rotational symmetry true or false
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Answer:
False
Step-by-step explanation:
This shape does not have reflectional symmetry because you can't draw a line have both sides look identical.
Answer:
False
Step-by-step explanation:
sure it has Rotational but a Reflection no
What is -6k + 15k + 8
Answers
Answer:
9k + 8
General Formulas and Concepts:
Algebra I
Combining like termsStep-by-step explanation:
Step 1: Define expression
-6k + 15k + 8
Step 2: Simplify
Combine like terms (k): 9k + 8And we have our final answer!
Need help fast with my work
Answers
Answer:
-25
Step-by-step explanation:
solve the equation 7- 14m = 2m - 5
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Answer:
m = 6/7
Step-by-step explanation:
Rearrange the equation so that like terms are on either side
7 + 5 = 2m + 14m
12 = 14m
Divide both sides by 14 so that the variable is on its own
12/14 = m
m = 6/7
two frights of twenty five is decreased by three
Answers
Answer:
Yes
Step-by-step explanation:
Sharon drove 270 miles in 4.5 hours. If she drove at a constant rate, how fast was Sharon driving?
Answers
Answer:
Sharon was driving 60 miles per hour.
Step-by-step explanation:
To solve this you must divide both the amount of miles (270) and the amount of hours (4.5) by the amount of hours so that way you can see how many miles per hour you are going.
4.5 / 4.5 = 1
270 / 4.5 = 60
This means that Sharon was driving 60 miles per hour.
Please help!
What's the answer to this?: (-5x^2)^3
Answers
You do
(-5)^3 * (x^2)^3
........2)3$2$$:$:$:$:$27/737373737
