Answer:
26 students are good in mathematics only.
28 students are not good in any of the three courses.
47.16 to the nearest tenth
Answer:
47.2
Step-by-step explanation:
Find the slope that is PARALLEL and PERPENDICULAR to the equation of the line y = -1/2x+6.
Answer:
parallel: -1/2
perpendicular: 2
Step-by-step explanation:
lines that are parallel have the same slope because they never intersect
lines that perpendicular, have the opposite reciprocal slope.
y = mx + b
where m is the slope
y = -1/2x + 6
-1/2 is the slope.
the slope in the equation given: -1/2
the slope parallel to the line given : -1/2
the slope perpendicular : opposite reciprocal, so the opposite of -1/2 is 1/2 and the reciprocal of 1/2 is 2.
How does the value of the 9 in 49.21 compare to the value of the 9 in 982.3?
When the sum of the internal angles of a polygon is 10 right angles, then how many sides does it have?
Answer:
7
Step-by-step explanation:
Let's say our sum is s.
s = 10 right angles
a right angle is 90 degrees
s = 10 (90)
s= 900
Given the amount of sides in a polygon (n), the sum of the interior angles is equal to
(n-2) * 180
Therefore, the sum of the interior angles is equal to
(n-2) * 180 = 900
divide both sides by 180 to help isolate n
n-2 = 5
add 2 to both sides to isolate n
n = 7
Find the area of this rectangle.
8 cm
4 cm
? ] = square centimeters
Answer:
32 cm²
Step-by-step explanation:
Area of rectangle
= length × breadth
= 8 cm × 4 cm
= 32 cm²
The picture above is what I’m stuck on Algebra
Answer:
Inequality
2x > 14
Solution
x > 7
Step-by-step explanation:
Twice of a number = 2x or 2 * x
Is more than 14 = > 14
Put these 2 descriptions together
2x > 14
Then divide each side by the coefficient
2x / 2 = x > 14 / 2 = x > 7
Answer:
2x > 14
Any number above 7.
Step-by-step explanation:
"Twice a number (x) is more than 14." can be written as 2x > 14.
Breakdown:
2x > 14 for Twice a number (x) is more than 14.
2x > 14 for Twice a number (x) is more than 14.
2x > 14 for Twice a number (x) is more than 14.
The solution to the inequality is any number above 7.
Help Help Help Help Help Help
Answer:
what happened are you OK
Find (f o g)(x)
Consider f(x) = x + 7 and g(x) = x2 –1
Work Shown:
(f o g)(x) = f(g(x))
f(x) = x + 7
f( g(x) ) = g(x) + 7 ... replace every x with g(x)
f( g(x) ) = x^2-1 + 7 .... plug in g(x) = x^2-1
f( g(x) ) = x^2 + 6
(f o g)(x) = x^2 + 6
Each row in A parking lot has 15 spaces. How many spaces could be in the parking lot. Give 5 possibilities. PLS HELP ME PLS
Answer: 30, 45, 60, 75, 90
Step-by-step explanation: you will use multiples of 15 to find the answer. Detail given below:
1. if parking lot have 2 rows then 30 spaces
2. if parking lot have 3 rows then 45 spaces
3. if parking lot have 4 rows then 60 spaces
4. if parking lot have 5 rows then 75 spaces
5. if parking lot have 6 rows then 90 spaces
Find the geometric probabilty of landing in the shaded area of the picture. The small circle has a diameter of 20 in and the larger circle has a diameter of 48 in. Round to the nearest hundredth place. Show and explain all work.
Answer:
0.17
Step-by-step explanation:
find the area of both circles:
small: 10^2 *pi=100pibig: 24^2 *pi=576pithen find the ration of the area of the small circle to the area of the large circle: 100pi/576pi (you can cancel out the pi here to get 100/576) -> 0.1736
round to the nearest hundredth and you get 0.17
un móvil a recorrido 2,4 km en 10 minutos hallar la velocidad del móvil en metros por segundo
Answer:
4.16 m/s
Step-by-step explanation:
Speed = Distance/Time
= 10/2.4
= 4.16 m/s
The area of a rectangle is 77 yd square, and the length of the rectangle is 3 yd more than twice the width. Find the dimensions of the rectangle.
Length :
Width :
Answer:
Length = 14 yd
Width = 5.5 yd
Step-by-step explanation:
Let width = x and length = 2x + 3
The formula for area is length x width.
(2x + 3) ( x ) = 77
2x² + 3x - 77 = 0
-77 x 2 = -154
What two numbers multiply to -154 and add to 3?
2x² + 14x - 11x - 77 = 0
2x (x + 7) - 11 (x + 7) = 0
(2x - 11) (x + 7) = 0
x = -7 (this isn't possible so ignore it)
x = 5.5 (width)
Now insert 5.5 into the initial equation.
2 (5.5) + 3 =
11 + 3 = 14
Answer:
Length is 3
width is 25•66
Step-by-step explanation:
Hope it helps!
Thanks.
What is 3/10 as a decimal?
Answer:
[tex]0.3[/tex]
Step-by-step explanation:
[tex]3 \div 10 = 0.3[/tex]
Answer: 0.3
Step-by-step explanation:
Comparing Values Compare the values of the underlined digits. 1. The 4 in 3,492 and the 4 in 704
9514 1404 393
Answer:
4 in 3492 is 100 times 4 in 704
Step-by-step explanation:
To find the value of a particular digit, set the other digits to zero.
4 in 3492 = 400
4 in 704 = 4
The first 4 is 100 times the value of the second 4.
A farmer performs a cross between two species of flowers and expects a distribution of 25% red, 50% pink, and 25% white flowers. Out of 224 flowers, the following numbers of red, pink, and white flowers were observed. Calculate the expected number of each type of flower.
Answer:
the number of pink would be 112 because 224 divided by 2 is 112 then the red and white are 56 cuz 112 divided by 2 is 56
Step-by-step explanation:
Determine whether (a) x = -1 or (b) x = 2 is a solution to this equation
X+1.5=3.5
Answer:
x = 2
Step-by-step explanation:
x + 1.5 = 3.5
-1.5 -1.5 minus 1.5 from both sides
--------------------
x = 2
36 34
What whole number is equivalent to the value of the expression
?
(32)41
Use the number pad to enter your answer in the box.
The value of the expression is equivalent to the whole number
Wat is the Rational number four 3/11
Answer:
the rational numbers is 3
multiply the fraction 5/6 to the decimal 2.4
Answer:
answer is 2. thank you. have a nice day
I need help with this question I need to type out a equation... but I don't understand what it's talking about.
Answer:
7725
Step-by-step explanation:
h=75ft
b1=125ft
b2=81ft
A=75((125+81)/2)
please help meeee out
Answer:
between 15.5 and 16
Step-by-step explanation:
which std
Please help me with my homework.
Answer:
-3x + 6
Step-by-step explanation:
-3(x - 2) to find the equivalent of this expression, we need to multiply inside the parenthesis with -3 (with both x and -2)
-3(x - 2 = -3x + 6 (two negative expressions multiplied results in positive)
If standard 6-sided dice are placed side-by-side touching in a single row on a table, only some of the faces will show. With 3 dice in a row, 11 faces are visible. If there were 2010 dice arranged in such a way, how many face could be seen?
d.l FM ffl ffl go go ttb unm ex in ex in esx i.v ex i.v ex uhc ex i.v ex i.v ex i.v ex i.v dad i.v esx in ex in ex i.v ex in ex i.v TV r.c 6 ex ow egg i.v razz ugh d
How many angles does this shape have?
Answer:
6 angles.
Step-by-step explanation:
This shape is a hexagon, since it has 6 sides. And because it has 6 sides, it has 6 vertexes, also known as angles.
Hope this helps!
Tamara rode her bicycle 8 miles in 0.5
hours. What was the average rate that
she rode her bicycle in miles per hour?
pls give me the step by step
Answer:
16 miles per hour (mph)
Step-by-step explanation:
Okay, so the beginning of the question states that Tamara rode her bicycle 8 miles in 0.5 hours.
0.5 is equivalent to 1/2 (one-half).
This means that she rode 8 miles in just half of an hour (30 minutes).
If she continues at this rate, she will have rode another 8 miles in the next 30 minutes.
And, 8 + 8 = 16.
Therefore, the average rate that she rode her bicycle is 16 miles per hour (mph).
Let me know if you have any questions.
Find the solution for
h - 12 =6
Answer:
H-12=6
H−12+12=6+12
h=18
Answer:
h=18
Step-by-step explanation:
h-12=6
is the normal eqaution, you need to determine the value of h, on the left side of the eqaution you have negative twelve we must get the h on its own by moving the 12 to the right side using of basic math rules you must know that when you have a negative and want to move it to the right hand side it must become a positive
so in formula it wil look like this
h = 6 + 12
Add up 6 with 12 that wil give you 18
so the value of h is then 18
h = 18
Somebody please help me solve this question. If possible with the explanation as well. Calculate
| 1-x^2 | > 1/2
Answer:
x < -√3/2, x > √3/2, or -√1/2 < x < √1/2
Step-by-step explanation:
|1 - x^2| > 1/2
~Apply absolute value rule
1 - x^2 < -1/2 or 1 - x^2 > 1/2
~Simplify
x < -√3/2, x > √3/2, or -√1/2 < x < √1/2
Best of Luck!
please help i added 39 points :) but i dont understand this so yeah
Answer:
3 - 5 - 7 - 11 - 12Step-by-step explanation:
Given data:
3, 5, 5, 6, 6, 8, 9, 11, 11, 12The 5-number summary is:
Q1 = minimum of data = 3Q2 = median of lower half = 5Q3 = median of data = (6 + 8)/2 = 7Q4 = median of upper half = 11Q5 = maximum of data = 12Am marking the brainliest. Please help me solve this mathematics question.
Explanation:
Use the identity [tex]\sin{\theta} = 1 - \cos^2{\theta}[/tex] so we can write our equation as
[tex]6(1 - \cos^2{\theta}) - \cos{\theta} - 5 = 0[/tex]
or
[tex]6\cos^2{\theta} + \cos{\theta} - 1 = 0[/tex]
Let [tex]x = \cos{\theta}[/tex] so our equation becomes
[tex]6x^2 + x - 1 = 0[/tex]
Using the quadratic equation, we find that its roots are
[tex]x = \dfrac{-1 \pm \sqrt{(1)^2 - 4(6)(-1)}}{2(6)} = \dfrac{1}{3},\:-\dfrac{1}{2}[/tex]
which gives us
[tex]\cos{\theta} = \dfrac{1}{3} \Rightarrow \theta = 70.53°[/tex]
[tex]\cos{\theta} = -\dfrac{1}{2} \Rightarrow \theta = 120°[/tex]
When 3 is added to a number, and the result is multiplied by 5, you obtain two times the number
Hi
to solve you must transcrive every word in math terms correctly.
so let's first give a name to our mysterious number. As you know, in math we generally call unknown by letter. " X"
so let's now play the detective.
what do we know on " X" ?
we add 3 to X so we have : X+3
then we multiply by 5. so. ( X+3) *5 .
if we do that we have twice X , so 2X
so ( X+3) * 5 = 2 X
now that we have translatted our data in math term, let's unmask. " X"
( X+3) *5 = 2X
5*X +3*5 = 2X
5X +15 = 2X
5X-2X = -15
3X = -15
X = -15/3
X = -5
So is " -5" is our guy.
let's check it out to be sure .
-5 +3 = -2
-2*5 = -10
-10 is twice -5. so -5 is the correct answer.
Ps : some operation are commonly implied. if you do not. know how I could write some line in the calculus, dont hesitate to ask in comments.
There is no mysteries in math everything is done according to rules and can be explained. So don't hesitate !