Answer:
8% or 74
Step-by-step explanation:
930 x 0.92 = 856
930 - 856 = 74
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In a survey of 930 students in a school, 92% reported having pets at home then margin of error is 3.3%.
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
In a survey of 930 students in a school.
92% reported having pets at home.
We need to find the margin of error.
The formula for margin of error=±1/√n
Where n is number of students
margin of error=±1/√930
=±1/√930
=±1/30.45
=±0.033
Now let us multiply with hundred.
=3.3%
Hence, In a survey of 930 students in a school, 92% reported having pets at home then margin of error is 3.3%.
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Q7: What is the slope of the line represented by the equation 2x + 6y = 5
Answer:
-1/3
Step-by-step explanation:
2x + 6y = 5
6y = -2x + 5
y = -1/3x + 5/6
Representing the equation in slope intercept form, the slope of the line represented by the equation is - 1/3
Given the equation :
2x + 6y = 5Slope intercept format :
y = bx + c ; b = slope2x + 6y = 5
6y = - 2x + 5
Divide both sides by 6 to isolate y
y = - 1/3x + 5/6
Hence, the value of slope, b in the equation is - 1/3
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(-6,8); perpendicular to y = -3/2x -1
Answer:
[tex]y = \frac{2}{3} x + 12[/tex]
Step-by-step explanation:
[tex]y = - \frac{3}{2} x - 1[/tex]
The gradient of a line is the coefficient of x when the equation of the line is written in the form of y=mx+c.
Thus, gradient of given line=[tex] - \frac{3}{2} [/tex].
The product of the gradients of perpendicular lines is -1.
(Gradient of line)(-3/2)= -1
Gradient of line
[tex]- 1 \div ( - \frac{3}{2} ) \\ = - 1( - \frac{2}{3} ) \\ = \frac{2}{3}[/tex]
Substitute m=[tex]\frac{2}{3} [/tex] into y=mx+c:
[tex]y = \frac{2}{3} x + c[/tex]
To find the value of c, substitute a pair of coordinates.
When x= -6, y= 8,
[tex]8 = \frac{2}{3} ( - 6) + c \\ \\ 8 = - 4 + c \\ c = 8 + 4 \\ c = 12[/tex]
Thus, the equation of the line is [tex]y = \frac{2}{3} x + 12[/tex].
solve the following:
3! + 0!
------------
2! * 1!
A.) 3/2
B.) 3
C.) 7/2
Answer:
3
Step-by-step explanation:
[tex]\frac{3+0}{2\times1}[/tex]
[tex]3+(\frac{0}{2})\times1[/tex]
[tex]\mathrm{Divide}[/tex]
[tex]{0\div2}=0[/tex]
[tex]3+0\times1[/tex]
[tex]3+0=3[/tex]
[tex]3\times1=3[/tex]
Lenvy~
Find an equation for the line that passes through the points (1,-3) and (-3,3)
Answer:
x1=1, x2=-3
y1=-3, y2=3
m=y2-y1/x1-x2
m=3-(-3)/-3-1
m=-3/2
since Y=mx+c
Then,Y=-3/2x+c
Hope! It will help you!!!
what is 3 1/4 - (-5/8)
Answer:
3.875
Step-By-Step-Explanation
3 2/8 + 5/8
PLEASE PLEASE ANSWER I WILL MARK AS BRAINLIST
Answer:
hey! ill do it but first do 3/4 x 8/15 for me PLSSSSSSSSSSS
Step-by-step explanation:
Which point does NOT lie on the graph of the line x + 2y = 9?
DO
A) (1,4)
B) (2, -1)
C) (3, 3)
D) (5,2)
Answer:
b (2, -1) is your answer for this question
A you-pick blueberry farm offers 6 lbs of blueberries for $16.50.
The eqaution R=10A-20 represents the revenue R (in dollars) you make by spending Adollars on advertising. Your revenue totaled $110. How much did you spend on advertising.
Select the best estimate that would help you check the answer to 778×23
.
A.
700×30
B.
700×20
C.
800×20
D.
800×30
Answer:
C: 800 x 20
Step-by-step explanation:
Basically, when you round 778 you see that the 7 and 8 are above 5, which means you round upwards. Therefore it would be best to round up to 800.
Then the 3 in 23 is below 5, meaning you round downwards. 20 Is the closest and best option.
So, C: 800 x 20 is best to do!
Answer:
Answer-C
Step-by-step explanation:
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Can you solve this PI day maze
To find the number pi in the box we must start with 3.14 and follow the sequence of the number.
What is the pi number?The number Pi is a mathematical value that is represented by the symbol π and is used to refer to the length of the circumference of a circle and its diameter in geometry.
The value of pi is the following:
3.141592653589793238462643....If we want to find the number pi, in the box we must follow the sequence of numbers that make up pi as shown:
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Mary decreased her time for the mile walk from 30 minutes to 24 minutes. What was the percent of decrease?
A. 32%
B. 20% increase
C. 20% decrease
D 88%
If 9-2k/3=k-2 what is the value of k
Answer:
[tex]k=3[/tex]
Step-by-step explanation:
Given the following question:
[tex]\frac{9-2k}{3} =k-2[/tex]
To find the answer we need to isolate k, in order to do that we need to use inverse of operations to cancel out integers on each side of the expression.
[tex]\frac{9-2k}{3} =k-2[/tex]
[tex]3\times0=0[/tex]
[tex]2\times3=6[/tex]
[tex]9-2k=k\times3-6[/tex]
[tex]9-9=0[/tex]
[tex]-6-9=15[/tex]
[tex]k\times3=3k[/tex]
[tex]-2k=3k-15[/tex]
[tex]-2k-2k=0[/tex]
[tex]3k+-3k=-5k[/tex]
[tex]-5k=-15[/tex]
[tex]-5k\div-5=k[/tex]
[tex]-15\div-5=3[/tex]
[tex]k=3[/tex]
Your answer is "k =3."
Hope this helps.
50 POINTS FOR CORRECT AWNSER
Answer:
[tex]y\leq \frac{1}{2} x+3[/tex]
Step-by-step explanation:
slope intercept form is [tex]y=mx+b[/tex] where [tex]m[/tex] is the gradient and [tex]b[/tex] is the y-intercept (the number at which it crosses the y axis)
firstly find the equation for this line:
the gradient can be found with the formula [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
so the gradient is [tex]\frac{4-3}{2-0}=\frac{1}{2} =0.5[/tex]
the y intercept is where it crosses the y axis so it is simply 3
our equation for the line is now [tex]y=\frac{1}{2} x+3[/tex] but the question is asking for an equality where the shaded area is BELOW the line.
so the inequality is [tex]y\leq \frac{1}{2} x+3[/tex]
Answer:
y ≤ [tex]\frac{1}{2}[/tex] x + 3
Step-by-step explanation:
the equation of the line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 6, 0) and (x₂, y₂ ) = (0, 3) ← 2 points on the line
m = [tex]\frac{3-0}{0-(-6)}[/tex] = [tex]\frac{3}{0+6}[/tex] = [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex]
the line crosses the y- axis at (0, 3 ) ⇒ c = 3
y = [tex]\frac{1}{2}[/tex] x + 3 ← is the equation of the line
the solution lies below the line and on the line.
as line is solid use ≤
y ≤ [tex]\frac{1}{2}[/tex] x + 3
Last year at science camp there were 140 people sleeping in cabins. There were 18 students for every 2 chaperones. How many students were sleeping in
cabins?
Answer:
126 students
Step-by-step explanation:
18+2=20
140 divided by 20=7
7x18=126
140-126=14 chaperones
(-15)2 equals ? This has got me stuck for a few minutes.
Answer:
225
Step-by-step explanation:
(- 15)² = - 15 × - 15 = 225
What is the sum of 3x^2 + 4x – 2 and x^2 - 5x + 3?
Answer:
(3+1) x² + (4-5) x + (-2+3)=
4 x² - x + 1
a population of 120000 grows 5% per year for 16 years
6000*16=96000+120000=216000
Ben had $25 he spent $6.55von lunch and $10 on top up
(a) How much did he spent altogether?
(b) How money did he left?
Answer:
A. 16.55$
B. 8.45$
Step-by-step explanation:
simply add 10 and 6.55 to get to get the total amount spent. Then subtract the answer you got from 25 to get the total amount left.
Answer:
(a) $16.55
(b) $8.45
Step-by-step explanation:
The cost of lunch added to the additional $10 Ben spent totals to $16.55
When we subtract that number from his original amount ($25) we get $8.45
Hope this helps! Have a great day!
Pls help me on this problem I’m confused
Answer:
1 yard = 3 feet
40 × 3 = 120 feet
1 foot per 2 seconds
120 × 2 = 240
240 ÷ 60 = 4 minutes
it takes her 4 minutes to reach the surface
Answer:
6 minutes and 65 seconds
Step-by-step explanation:
The unit rate is: 1/2.
1/2 x 40 = 40/80
80/60 = 1.33
1.33 x 3 (Because every foot is a meter)
3.99 / .60
6.65.
Hope this helps! Have a good day.
(Also, nice Sans PFP, mine is Sans too ;>)
HELP PLEASEE ASAPP
Kelly and Tracy wanna know which of their dogs runs faster. The graph represents the constant speed of Kelly’s dog, and the equation represents the constant speed of Tracy’s dog, both in meters per second. Which dog has greater constant speed (unit rate)?
Kelly’s dog. Unit rate=___meters per second
Speed of Tracy’s dog: y=11x
Tracy’s dog, unit rate= __meters per second
The dog with the greater constant speed is ___’s dog
Answer:
Kelly's Dog = Unit Rate = ?
Tracy's Dog = Unit Rate = ?
Top Speed is Tracy's Dog
Step-by-step explanation:
There's not enough evidence to finish this question, can you pls give more context to this? Can you pls send the pic of the graph?
Which are true if figure DEFG is reflected across the x-axis? Check all that apply.
Answer:
1.D(0, 4) → D'(0, –4)
2.E(–2, 0) → E'(–2, 0)
3.The perpendicular distance from G' to the x-axis will equal 2 units.
4.The perpendicular distance from D' to the x-axis will equal 8 units.
5.The orientation will be preserved.
Step-by-step explanation:
D(0, 4) becomes D'(0, –4) and E(–2, 0) becomes E'(–2, 0).
We know that the rule for reflecting over the X axis is to negate the value of the y-coordinate of each point, but leave the x-value the same.
The coordinate of D(0, 4) becomes D'(0, –4) and coordinate of E(–2, 0) becomes E'(–2, 0).
3.The perpendicular distance from G' to the x-axis is 2 units.
4.The perpendicular distance from D' to the x-axis is 8 units.
Hence D(0, 4) becomes D'(0, –4) and E(–2, 0) becomes E'(–2, 0).
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When a figure is translated, its orientation
and the measures of its angles
.
Answer:
Hope it helps :)
Step-by-step explanation:
So, when figure is translated, its orientation (=0°,i.e Not Rotated through any angle) and the measures of its angles (Remains same) . Hope it helps!~
(Sorry if you get it wrong or I got it wrong-)
~The Confuzzeled homan
Jenny wants to serve fruit punch at her party. She plans to buy a punch bowl that costs 5$ and fruit punch that costs 1.40$ per liter. If p represents the number of liters of fruit punch that she buys, which expression can be used to find how much it will cost Jenny to serve punch at her party?
a = , b = , c = , d = , e = .
- To people who need this for Edge "Modeling a Bicycle Wheel" it's 6, 8, 6, 7, 7.
Answer:
Thanks! I was doing this lesson now and was getting ready to ask a question, but I saw this, and it helped me a lot. Thank you!
Step-by-step explanation:
Even though I technically didn't answer anything, can I have brainliest? I really want to level up
Have a blessed day and remember to keep smiling! :)
please help fhgdsafghjk,
Answer:
b
Step-by-step explanation:
Pattern A: 3, 10, 17, 24, 31
Pattern B: 3, 7, 11, 15, 19
if y=10 when x=4, find y when x=12.
Answer:
If both numbers have to stay equivalent, then y equals 30 if x = 12. My reasoning is 12/4 = 3. 3 times 10 = 30.
someone help answer the bottom 4 pls I'll brainlist u !!
HELPPPPERZ its dude today :)
Answer:
34 or B
Step-by-step explanation:
180-112=68
68/2=34
Since the 2 angles equal 180, and we already know one is 112, we can subtract that. and because it is 2 times a number, we need to get half of whatever that number is, which was 68, and we got 34. this would be the value of y, because when plugged in, 112+2(34)=180.
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Two times a number decreased by 7
Answer:
result is 35
Step-by-step explanation: