Answers
Answer:
40° D. is your answer to this question
Related Questions
Date
Page
Out
of
100 students who appeared in
grade.VIII annual examination
of
Ram
Janaki Secondary School.60 passed in
mothematics, 50 in science and 20 students
passed in both subject find how
many
failed in both subject ? Aso show above information
student
in Venn-
bright
Venn-diagram
huan anatoa )
Sonnant Babase
eigshoos te
oloh
Answers
Answer:
10 student failed in both subjects.
Step-by-step explanation:
Since out of 100 students who appeared in grade VIII annual examination of Ram Janaki Secondary School, 60 passed in mathematics, 50 in science and 20 students passed in both subjects, to determine how many failed in both subjects the following calculation must be performed:
(100 - 20) - (60 - 20) - (50 - 20) = X
80 - 40 - 30 = X
40 - 30 = X
10 = X
Therefore, 10 student failed in both subjects.
Mrs. Smith is creating a rectangular flower bed such that the width is half of the
length. The area of the flower bed is 34 square feet. Write and solve an equation
to determine the width of the flower bed, to the nearest tenth of a foot.
Answers
Answer:
As for this problem, we will first establish that the length of the flower bed be represented as x, the width of the flower bed be represented as x/2 ,and the area of the flower bed be taken as it is since it is given. We then follow the formula for area which is length multiplied to width which is:
A = LW
we then substitute them
34 square feet = x (x/2)
now all we need to do is find x first.
34 square feet = x squared / 2
now do a cross multiplication
68 square feet = x squared
then get the square root of both sides
8.246 feet = x
Since x is equal to the length of the flower bed, all we have to do to get the width of it is to divide it by 2. So...
W = x/2
W = 8.246 feet / 2
W = 4.123 feet
And since the problem asked it to find the width of the flower bed to the nearest tenth of a foot, the answer would be 4.1 ft.
A plumbing bill was $200. This included $50 for parts and $25 per hour for labor. Find the number of hours of labor.
Answers
Answer:
6 hours
Step-by-step explanation:
Answer:
6 hrs. of labor
Step-by-step explanation:
200-50= 150
150/25= 6
Find the radius y of circle C, given that x = 12 and z = y + 8.
PLEASEEE HELP ME
Answers
The radius of the given circle is 5, option C is correct.
What is Trigonometry?Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.
In the given figure, y is the radius.
By pythagoras theorem we find the radius
In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides.
AC²+AB²=BC²
y²+12²=(y+8)²
y²+12²=y²+64+16y
144=16y+64
Subtract 64 from both sides
144-64 = 16y
80=16y
Divide both sides by 16
y=5
Hence, the radius of the given circle is 5, option C is correct.
To learn more on trigonometry click:
https://brainly.com/question/25122835
#SPJ2
Triangle PQR is similar to triangle XYZ. The length of PQ is one-half the length of XY. THe length of RP is 2 cm. Which proportion can be used to find the length of ZX?
Answers
Answer:
[tex]ZX = 4cm[/tex]
Step-by-step explanation:
Given
[tex]\triangle PQR[/tex] similar to [tex]\triangle XYZ[/tex]
[tex]PQ = \frac{1}{2}XY[/tex]
[tex]RP = 2cm[/tex]
Required
Find ZX
[tex]\triangle PQR[/tex] similar to [tex]\triangle XYZ[/tex] implies that, the following sides are similar
[tex]PQ \to XY[/tex]
[tex]QR \to YZ[/tex]
[tex]RP \to ZX[/tex]
To find ZX, we make use of the following equivalent ratio
[tex]PQ : XY = RP : ZX[/tex]
Where
[tex]PQ = \frac{1}{2}XY[/tex]
[tex]RP = 2cm[/tex]
So, we have:
[tex]\frac{1}{2}XY : XY = 2cm : ZX[/tex]
Express as fraction
[tex]\frac{\frac{1}{2}XY }{ XY }= \frac{2cm }{ ZX}[/tex]
[tex]\frac{1}{2}= \frac{2cm }{ ZX}[/tex]
Make ZX the subject
[tex]ZX = 2 * 2cm[/tex]
[tex]ZX = 4cm[/tex]
What is the area of the right triangle shown below?
Answers
Answer:
60 units²
Step-by-step explanation:
Find the other side length:
8² + x² = 17²
64 + x² = 289
x² = 225
x = 15
Find the Area:
1/2(8 x 15) = Area
1/2(120) = Area
Area = 60
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
What is the distance between the following points?
Answers
Does f(x) = - 3x² + 6x - 4 have a maximum or
minimum? Find the value
Answers
Answer:
Maximum value.
it = -1.
Step-by-step explanation:
Maximum value as the coefficient of x^2 is negative.
To find this value we convert to vertex form:
y = -3x^2 + 6x - 4
y = -3(x^2 - 2x) - 4
y = -3[(x - 1)^2 - 1] - 4
y = -3(x - 1)^2 + 3 - 4
y = =3(x - 1)^2 - 1
Minimum value = -1.
Jen's test grades for this term are 85,92, and 95. She wants to have a test average of at least 90 for this term, and she will have one more test. What is the lowest score that she can get to have a test average of at least 90?
Answers
Answer:
Step-by-step explanation:
(85+92+95+x)/4
=90
(272+x)/4
=90
90×4=360
272+x=360
x=360-272=88
so it's the lowest score
Sunny and Rashika collect stamps. Sunny has collected 3 times as many stamps as Rashika. Together, they have 304 stamps. How many stamps does each person have? Show your work.
Answers
Answer:
Sunny = 228 stampsRashika = 76 stampsStep-by-step explanation:
Sunny has collected 3 times the stamps that Rashika has collected but in total they have both collected 304 stamps.
Assume that Rashika has x stamps. This would mean that Sunny has (3 * x) or 3x stamps.
In an equation this would be:
x + 3x = 304
4x = 304
x = 304/4
x = 76 stamps
Rashika has 76 stamps.
Sunny has 3 times that number:
= 76 * 3
= 228 stamps
NUM ALDITORIO HA 224 CADEIRAS ORGANIZADAS EM 8 FILEIRAS COM A MESMA QUANTIDADE DE CADEIRAS QUANTAS CADEIRAS HA EM CADA FILEIRA
Answers
Answer:
The number of chains in each fileiras = 28.
Step-by-step explanation:
Total number of chains = 224
Number of fileiras = 8
Number of chains in each fileiras is given by the divison of total number of chains to the number filerias.
[tex]\frac{224}{8}\\\\=28[/tex]
What is the solution set of 6 x^2 - 24 = 0?
{-2}
{-2, 2}
{2}
Answers
Answer: 1. x = 2
2. x = -2
Step-by-step explanation:
Guide Questions:
1. How students have age between 12 and 14?
2. How many 14-year-old grade 7 students do there?
Answers
Answer:
2. There are 5 students 14 years old 7 grade
What is the perimeter, in units, of polygon EFGHJK?
Answers
Answer:
38 units
Step-by-step explanation:
The sides of the polygon can be counted directly, as they are all straight
EF = 2
FG = 10
GH = 9
HJ = 8
JK = 7
KE = 2
perimeter is the sum of all sides
= 2 + 10 + 9 + 8 + 7 + 2
= 38 units
How do you write an equivalent logarithmic equation for e^4=x
Answers
Answer:
4 = ln x
Step-by-step explanation:
e^4=x
Take the natural log of each side
ln(e^4)=ln(x)
We know ln a^b = b ln a
4 ln e = ln x
ln (e) =1
4 = ln x
Find the word or phrases that best complete the sentence intersecting planes ___ intersect in exactly one point
Answers
Answer:
never
Step-by-step explanation:
Intersecting planes are planes that intersect along a given line.
To explain this better, consider the following definitions:
i. A point: This is denoted by a dot and it is a location marked on a space or a plane.
ii. A line: This is the distance between two points. It is one-dimensional.
iii. A plane: This is a two-dimensional, flat surface with no thickness formed by points and extends infinitely.
Therefore, since intersecting planes intersect along a line, it is not possible that they intersect in exactly one point given that a line is the distance between points.
If the smallest angle of rotation for a regular polygon is 18, how many sides does polygon have?
10
12
20
24
Answers
Answer: There are 20 sides of a given regular polygon.
Step-by-step explanation:
To calculate the sides of a regular polygon, we use the equation:
[tex]\text{Number of sides}=\frac{360^o}{\text{Smallest angle of rotation}}[/tex]
We are given:
Smallest angle of rotation = [tex]18^o[/tex]
Putting values in above equation, we get:
[tex]\text{Number of sides}=\frac{360^o}{18^o}\\\\\text{Number of sides}=20[/tex]
Hence, there are 20 sides of a given regular polygon.
Answer:
20
Step-by-step explanation:
edg did the test
Help, need index form
Answers
Refer to the attachment for complete calculation.
3²× 11^-9
Find the mean, median, and mode of the following set of data:
54, 48, 37, 55, 51, 54, 42, 52, 53
Answers
Answer:
Step-by-step explanation:
mode is means the data which is repeated maximum number of times.
here 54 is repeated maximum number of times so the mode of the given data is 54.
to calculate median u must arrange the data from ascending to descending order.
37 , 42 , 48 , 51 , 52 , 53 , 54 , 54 , 55 ,
median = (N + 1) /2 (N means number of data)
=9 + 1/2
=10/2
=5 th term
=52
Median: 52
Mode: 54
For the median, we have to put the data in order:
37, 42, 48, 51, 52, 53, 54, 54, 55.
The middle number is the median: 52 (there are 4 numbers higher and 4 numbers lower than 52)
The mode is the number that occurs most often. 54 is the only one that shows up more than once.
To get the money, we add all the numbers, which = 446. Then divide that by how many numbers there are (9)
446/9 = 49.555555 = 49.6
Question 2
Find the equation of the line parallel to y = x - 2 that passes through the point (-3,2).
Answers
Answer:
The equation of the required line is y = x + 5
Step-by-step explanation:
The equation of the given line is y = x - 2
The required line = A line parallel to the given line
The point through which the required line passes = (-3, 2)
The general form of the equation of a straight line, is y = m·x + c
Where;
m = The slope of the line
By comparison, the slope of the given line, m = 1
When two lines are parallel, their slope are equal
Therefore, the slope of the required line = m = 1
The equation of the required line in point and slope form is therefore;
y - 2 = x - (-3) = x + 3
∴y = x + 3 + 2 = x + 5
The equation of the required line is therefore;
y = x + 5.
can someone PLEASE HELP me?? the answer has to be in simplest form and i keep getting it wrong. the ixl score needs to be at 68 and im only at 30. i really need this done please
explaining your answer to me will get you brainliest.
Answers
Answer: The formula for sector area is simple, multiply the central angle by the radius squared, and divide by 2: Sector Area = r² * α / 2. So you want to do that for every problem like this
Step-by-step explanation:s
=========================================================
Explanation:
Let's ignore the area of the shaded slice for now. Instead, we'll find the area of the full circle
We plug in the radius r = 1 to find that
A = pi*r^2
A = pi*1^2
A = pi
The exact area of that full circle is pi square meters. You can think of an actual pie (the baked pastry, not the constant) with this area as a way to help conceptualize things.
If we wanted the whole circle, then we'd say pi is the answer. However, we only want a slice of that circle. The fractional amount 66/360 represents the slice we want. This fraction reduces to 11/60 after you divide both parts by 6. If you were to cut the pizza up into 60 slices, then you would shade 11 of them in to represent the green area.
Multiply 11/60 with the area pi to get the final answer 11pi/60
This answer is exact in terms of pi
To get an approximate value, you could replace pi with 3.14 to get 11pi/60 = 11*3.14/60 = 0.57567 meaning the green shaded area is roughly 0.57567 square meters. Use more decimal digits of pi to get a more accurate shaded area.
What is an equation of the line that passes through the points (-5,6) and (7,6)?
Answers
Step-by-step explanation:
The formula of a slope:
We have the points (-5, 6) and (7, 6). Substitute:
The slope m = 0. Therefore it's a horizontal line y = a.
In the given points we have y = 6.
Line A has a slope of 3/2 and passes through the point (3, 3). Line B has a slope of – 1/3 and passes through the point (-4, -2). At what point does line A intersect line B? Line Aintersects line B at the point ( , ).
Answers
Answer:
The lines meet at (-1, -3)
Step-by-step explanation:
Line A :
[tex](x_1, y_1) = (3, 3) \ ; \ slope, \ m_A = \frac{3}{2}\\\\Equation \ of \ line \ A : (y - 3) = \frac{3}{2}(x - 3)[/tex]
[tex]2(y - 3) = 3(x-3)\\2y - 6 = 3x - 9\\2y = 3x - 9 + 6\\2y = 3x -3[/tex]
Line B :
[tex](x_2,y_2) = (-4, -2) \ ; \ slope , m_B = -\frac{1}{3}\\\\Equation \ of\ line \ B: (y -(-2)) = -\frac{1}{3}(x -(-4))[/tex]
[tex]3(y + 2) = -1(x+4)\\3y + 6 = -x -4\\3y = -x - 4 - 6 \\3y = -x - 10[/tex]
Solve for x and y from the linear equation to find where line A and line B meets :
2y = 3x - 3 => 3x - 2y = 3 ------- (1)
3y = -x - 10 => -x = 3y + 10
=> x = - 3y - 10 --------(2)
Substitute (2) in (1) : => 3(- 3y - 10) - 2y = 3
-9y - 30 -2y = 3
-11y = 3 + 30
-11y = 33
y = -3
Substitute y in (2) : => x = -3 (-3) - 10 = 9 - 10 = -1
slope = 4, point (3,-2) is on the line
Answers
Answer:
y = 4x + b
Step-by-step explanation:
We know that (3, -2) is on this line. So 3 = m(-2)+b.
This leaves us with two variables the slope (m) and the y intercept (b).
But wait a minute, the slope is given to us since it says slope = 4.
Our equation is now, 3 = 4(-2)+b
3 = -8 + b
b = 11.
Our final equation is now y = 4x + b.
(y,x) is a point on this line.
Hope this helped!
JoeLouis2
Find the volume of a
rectangular prism where
1= 3 feet, w= 7 feet, and
h = 9 feet. (V = lwh)
Answers
Answer:
v = 189 ft³
Step-by-step explanation:
v = lwh
v = 3 * 7 * 9
v = 189 ft³
Silas has 5 1/4 cups of flour. He uses 3 1/2 cups to bake bread, then he borrows another 2 cups from his neighbor. He wants to bake cookies, which take 2 3/4 cups of flour. Does he have enough? How much will he have left over, or how much more does he need?
Answers
Answer:
He has enough to bake the cookies with 1 cup of flour left over.
Step-by-step explanation:
5.25 cups to start - 3.5 for the bread = 1.75 remaining
1.75 cups + 2 cups from neighbors = 3.75 cups
3.75 - 2.75 for cookies = 1 cup left over.
Applying L'Hospital's rule is not allowed
Answers
Answer:
-1/2
Step-by-step explanation:
lim x-> π/2 cos x /(2x-π) =
lim (x-π/2)->0 sin (π/2 - x) /2(x-π/2) =
lim (x-π/2)->0 - sin (x - π/2)/2(x-π/2) = -1/2
Ranking correct answer brainliest! If you need more points check unanswered questions
Answers
Answer:
8.66
Step-by-step explanation:
b = a sqrt(3)
The surface area of Canada is 9,984,671 square kilometers. Which number, written in scientific notation, is the best approximation of the surface area?
Answers
Answer:
9.99 *10 ^ 6 km
Step-by-step explanation:
Given that the surface area of Canada is 9,984,671 square kilometers.
The standard form of scientific notation is expressed as;
A * 10^n
A is any values between 1 to 9
n is an integer
Given
9,984,671 square kilometers.
9,984,671 = 9.99 *10 ^ 6
Hence the required scientific notation is 9.99 *10 ^ 6
Write the Slope Intercept Form equation of the line that passes through the points (-4,-2) and (-2,3)
Answers
Answer:
y = 5/2x + 8
Step-by-step explanation:
y2 - y1 / x2 - x1
3 - (-2) / -2 - (-4)
5 / 2
= 5/2
y = 5/2x + b
3 = 5/2(-2) + b
3 = -5 + b
8 = b