Hello There, the answer is C. 55%!
To solve, get the total (11 boys + 9 girls = 20 total students). Put the number of boys over the total, representing it as a fraction, 11/20. Now convert this t a precent by dividing 11 by 20 and multiplying the result by 100.
11 divided by 20 = 0.55
0.55 times 100 = 55%
So, 55% is your final answer. I hope this helps and have a great day!
The percent of the class that are boys is Option(C) 55% .
What percent of class are boys ?It is given that a class had 11 boys and 9 girls in it.
Thus the total number of students in the class is = (11 + 9) = 20
The percent of boys is given by -
(Number of boys / Total number of students) * 100 %
⇒ Percent of boys = 11/20 * 100 %
∴ Percent of boys = 55%
Therefore, the percent of the class that are boys is Option(C) 55% .
To learn more about percentage, refer -
https://brainly.com/question/24304697
#SPJ2
I need help please. Very plz correct answer plz.
Answer:
Step-by-step explanation:
The 9 is in the tens place in 75, 293 so rounding to the tens place means we need to round to the place the 9 is in, and we can sort of disregard the number after that, which is a 3. It will eventually round to a 0, but if that number is 5 or greater, it rounds the 9 up. It's a 3, so the 9 stays a 9: 75, 290.
The 2 is in the hundreds place, so just like above, we can change everything after the 2 to a 0, after we use the 9 for rounding. 9 is greater than 5, so the 2 rounds up to a 3: 75, 300.
The 5 is in the thousands place, so everything after that will become 0's, but use the 2 for rounding first. 2 is less than 5, so the 5 stays a 5: 75, 000.
What are the solutions for x to the equation (x-3)(x+8)=0
For this case we have a factored expression, of a second degree equation:
([tex](x-3) (x + 8) = 0[/tex]
To find the solutions:
[tex]x-3 = 0[/tex]we add 3 to both sides of the equation:
[tex]x=3[/tex]
[tex]x+8=0[/tex]We subtract 8 on both sides of the equation:
[tex]x = -8[/tex]
Thus, the solutions of the equation are:
[tex]x_ {1} = 3\\x_ {2} = - 8[/tex]
Answer:
[tex]x_ {1} = 3\\x_ {2} = - 8[/tex]
Another Urgent one!! you know the drill. HEEEEEEEEEEELP
Answer:
Step-by-step explanation:
It is a right angle triangle with height and base = 3. The 4.24, for area, is not relevant.
Area = h * b / 2
Area = 3 * 3/2
Area = 9/2
Area = 4.5
Answer:
4.5 units
Step-by-step explanation:
A=1/2(b×h)
b=base
h=height
plug in what we know ...
A=1/2 (3×3)
A=1/2 (9)
A=4.5
Simplify 4!
A.24
B.10
C.9
D.4
Answer:
A. 24
Step-by-step explanation:
! = 2 multiplied by the maximum
So, 4! = 2 × 3 × 4 [24]
This is what is known as Factorials.
I am joyous to assist you anytime.
Answer:
[tex]\Huge\boxed{24}[/tex]
Step-by-step explanation:
Apply by the factorial rule.
[tex]\displaystyle 4!=1*2*3*4[/tex]
Then multiply to find the answer.
[tex]\displaystyle 1*2*3*4=4*3=12*2=24*1=24[/tex]
24, which is our answer.
A strong foundation in mathematics is most necessary for which career?
Education
Engineering
Graphic design
Medicine
Answer:
b
Step-by-step explanation:
Please help answer this geometry
Answer:
a. [tex](8x+12y)^{2} +(6x+9y)^{2} = (10x+15y)^{2}[/tex]
b. [tex]100x+225y=100x+225[/tex] Which means it is an identity
Step-by-step explanation:
The Pythagorean Theorem states that in every right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the respective lengths of the legs. It is the best-known proposition among those that have their own name in mathematics.
If in a right triangle there are legs of length a, and b, and the measure of the hypotenuse is c, then The following relationship is fulfilled:
[tex]a^{2} +b^{2}=c^{2}[/tex]
a. Write an equation using the Pythagorean Theorem and the measurements provided in the diagram
From the exercise shown in the image, we can get the values of a, b, and c.
a = 8x+12y, b = 6x+9y, and c = 10x+15y
Write an equation using the Pythagorean Theorem
We obtain:
[tex](8x+12y)^{2} +(6x+9y)^{2} = (10x+15y)^{2}[/tex]
b. Transform each side of the equation to determine if it is an identity.
In mathematics, an identity is the realization that two objects that are mathematically written differently, are in fact the same object. In particular, an identity is an equality between two expressions, which is true whatever the values of the different ones are.
So, we transform each side of the equation
[tex](8x+12y)^{2} +(6x+9y)^{2} = (10x+15y)^{2}[/tex]
[tex](8x)^{2} +(12y)^{2} +(6x)^{2} +(9y)^{2}= (10x)^{2}+(15y)^{2}\\64x+144y+36x+81y=100x+225y\\(64x+36x)+(144y+81y)=100x+225y\\100x+225y=100x+225[/tex] Which means it is an identity
.
Answer:
a). (10x + 15y)² = (8x + 12y)² + (6x + 9y)²
b). It's an identity
Step-by-step explanation:
a). Pythagoras theorem says
(Hypotenuse)² = Height² + Base²
Therefore, form the given picture
(10x + 15y)² = (8x + 12y)² + (6x + 9y)² will be the equation.
b). For an identity we have to prove Right hand side of the equation(R.H.S.) = Left hand side of the equation(L.H.S.)
Now we solve the L.H.S. of the equation
(10x + 15y)²
= 100x² + 225y² + 300xy [ (a + b)² = a²+ b² + 2ab
Now we solve R.H.S. of the equation
(8x + 12y)² + (6x + 9y)²
= 64x²+ 144y² + 36x² + 81y² + 108y + 192xy + 108xy
= 100x² + 225y²+ 300xy
Therefore, L.H.S. = R.H.S.
The given equation is an identity.
Use the vertical line test to determine if the relation is a function!! HELP NEEDED!!
Below is an image of the vertical line test.
The vertical line test is passed only when a vertical line only intersects the graph once. As you can see this graph intersects the graph twice, and therefore is not a function.
The answer you selected was correct!
Hope this helped!
10+13h-6-4h+9+12h simplified
Answer:
[tex]\boxed{\bold{21h+13}}[/tex]
Explanation:
Group Like Terms
= [tex]\bold{13h-4h+12h+10-6+9}[/tex]
Combine Similar Elements: [tex]\bold{13h-4h+12h=21h}[/tex]
= [tex]\bold{21h+10-6+9}[/tex]
Subtract: [tex]\bold{10-6+9=13}[/tex]
= [tex]\bold{21h+13}[/tex]
Mordancy.
The choices for the first one is
1/4
1
5/4
Choice for the second one is
(3i square root 7)/4
(i square root 21)/2
(square root 112)/4
Answer:
[tex]\large\boxed{\dfrac{5\pm3\sqrt7}{4}}[/tex]
Step-by-step explanation:
[tex]m^2-\dfrac{5}{2}m=-\dfrac{11}{2}\qquad\text{add}\ \dfrac{11}{2}\ \text{to both sides}\\\\m^2-\dfrac{5}{2}m+\dfrac{11}{2}=0\qquad\text{multiply both sides by 2}\\\\2m^2-5m+11=0[/tex]
[tex]\text{Use the quadratic formula:}[/tex]
[tex]ax^2+bx+c=0\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
[tex]\text{We have}[/tex]
[tex]a=2,\ b=-5,\ c=11[/tex]
[tex]\text{substitute:}[/tex]
[tex]\sqrt{b^2-4ac}=\sqrt{(-5)^2-4(2)(11)}=\sqrt{25-88}=\sqrt{63}=\sqrt{9\cdot7}=\sqrt9\cdot\sqrt7=3\sqrt7\\\\m=\dfrac{-(-5)\pm3\sqrt7}{2(2)}=\dfrac{5\pm3\sqrt7}{4}[/tex]
What is the range of the function? f(x) = -2^x + 1
{y|1 > y}, (-∞, 1); you did not specifically mention what notation you needed, so I wrote both [Internal Notation and Set Notation].
Answer:
all real numbers less than or equal to 0
Step-by-step explanation:
EDGE 2020
Would an experience downhill skier want the slope of the hill to be 1/10 or 9/10? Why?
Answer:
9/10
Step-by-step explanation:
step 1
Compare the slopes
[tex]1/10=0.10[/tex]
[tex]9/10=0.9[/tex]
[tex]0.9 > 0.10[/tex]
therefore
An experienced skier would like the 9/10 hill slope because it is steeper, while the 1/10 is a softer slope.
8-102.
The graph at right represents this situation: Cara jogs every
morning, and after 30 minutes, she has run 3.5 miles.
a. How is Cara's speed represented on the graph?
b. Write a rule for Cara's distance if t represents
the number of hours.
Distance (miles)
c.
If Cara continues to run at this rate, predict
how far she will run in 4 hours.
a. The speed is represented by 7 miles an hour
b. f(t)=7t
c. 28 miles
Nita needs at least $85 to buy a skateboard. She already has $61 Which graph best represents all the possible dollar amounts that it can save to buy a
Skateboard?
I believe the answer would be B. Hope this helps!
Graph B. best represents all the possible dollar amounts that it can save to buy a Skateboard.
What is a number line?calculation:-
amount Nita needed to buy a skateboard=$85
amount had=$61
∴ amount Nita needed more= $85-$61
=$24
A number line is a horizontal line that has numbers in equal intervals.The numbers included on the line can be negative or positive taking zero as a reference point at the center called the origin.The horizontal straight lines in which the integers are placed in equal intervals increase as we go right.The horizontal straight lines in which the integers are placed in equal intervals decreases as we go left.Learn more about the number line here:https://brainly.com/question/24644930
#SPJ2
How is the graph of y= 1/3x related to its parent function y=1/x
A)It is horizontally stretched by a factor of 3 and reflected over the x-axis.
B)It is horizontally stretched by a factor of 3 and reflected over the y-axis.
C)It is horizontally compressed by a factor of 3 and reflected over the x-axis.
D)It is horizontally compressed by a factor of 3 and reflected over the y-axis.
B it is horizontally stretched by a factor of of 3 and reflected over the y
Answer:
itś C on edge :)
Step-by-step explanation:
which graph represents the piece wise- defined function f(x) =
Answer:
right-most fourth graph
Step-by-step explanation:
Given:
f(x)= -x+4 for 0≤x<3
i.e. from x=0 till x=3 the graph is linear line
then
f(x) = 5 for x≥3
i.e. at x=3 and onward graph is a straight line with y-axis point of 5 !
Answer:
The fourth graph, from left to right, is the correct answer.Step-by-step explanation:
The given piecewise function is
[tex]f(x)=\left \{ {{-x+4 \ ; \ 0\leq x<3} \atop {5 \ ; \ x\geq3 }} \right.[/tex]
Notice that the domain of the function specifies that, from zero to three, the function represents a decreasing (because the variable is negative) straight line. When the function is defined from 3 to infinite, the function is a constant of 5.
So, the right graph must shows first a decreasing line, where the initial point is solid and the final point is empty, as the fourth fraph (from left to right), then it must show a horizontal line with an initial point solid.
Therefore, the fourth graph, from left to right, is the correct answer.
help!!!!!!!!!!!!!!!!!!!!
Answer:
π units^2.
Step-by-step explanation:
The area = π r^2 where r = the radius and the radius = 1/2 * the diameter.
So the radius of this circle = 1/2 * 2 = 1.
The required area = π * 1^2
= π units^2.
ANSWER
Exact form: π units square.
Or 3.14 square units.
EXPLANATION
The area of a circle is calculated using the formula:
[tex]Area = \pi \times {r}^{2} [/tex]
From the diagram, the diameter of the circle is d=2 units.
The radius is half of the diameter which is 1 unit.
We substitute r =1 into the formula to obtain;
[tex]Area = \pi \times {1}^{2} [/tex]
[tex]Area = \pi \: [/tex]
In decimal form, the area is
[tex]Area =3.14 \: square \: units[/tex]
In last night’s baseball game, there were 4 walks and 15 hits. Express the ratio of walks to hits, written in three different ways.
Word form: 4 to 15
Fraction form: 4/15
Ratio form: 4:15
The ratio has been written in three different forms as 4:15, 0.266:1 or 1:3.75.
What is a Ratio?When a number is divisible by another number then it can be written in the form of p:q, if two ratios are equal then they are said to be in proportion.
The number of walks in the baseball game is 4
The number of hits in the baseball game is 15
The ratio of walks to hits is 4 :15
The ratio of walks to hits is 0.2666 : 1
The ratio of walks to hits is 1 : 3.75
Therefore, the ratio has been written in three different forms as 4:15, 0.266:1 or 1:3.75.
To know more about Ratio
https://brainly.com/question/13419413
#SPJ2
if point c is between points a and b, then ac+cb=
Answer:
Step-by-step explanation:
ac + cb = ab
What actual floor number do each student live on? Show your work also.
Heathe lives halfway up: 42 / 2 = 21st floor.
Raveen = 42 x 4/7 = 168/7 = 24th floor.
Alveera = 42 x 3/14 = 126/14 = 9th floor.
Rafi = 42 x 4/6 = 168/6 = 28th floor.
Suha = 28-24 = 4 /2 = 2 = 24+2 = 26th floor.
Arabi = 42 x 2/3 = 84/3 = 28th floor
Monica runs on a treadmill at an average speed of 7.5 miles per hour for 15 minutes. If, the next day, she runs the same distance at a speed of 8 miles per hour, what is the average time taken?
Answer:
Option 2: 14.06 minutes
Step-by-step explanation:
For the first scenario, we will convert the minutes into hours first to get all the quantities in same unit
So,
15 minutes = 1/4 hours = 0.25 hours
Speed = 7.5 miles per hour
Now using the speed, distance and time formula
Speed = distance/time
[tex]Speed = \frac{distance}{time}[/tex]
[tex]7.5 = \frac{distance}{0.25}[/tex]
[tex]7.5 * 0.25 = Distance[/tex]
Distance = 1.875 miles
So the distance for 1st day is 1.875 miles.
For next day
Speed = 8 miles per hour
Distance = 1.875
So,
[tex]speed = \frac{distance}{time}[/tex]
[tex]8 = \frac{1.875}{time}[/tex]
[tex]time = \frac{1.875}{8}[/tex]
[tex]time = 0.234375 hours[/tex]
Converting the hours into minutes will give
0.234375 * 60 min = 14.0625 minutes
Rounding off to two decimals = 14.06 min
So 2nd option is correct..
Which of the following is the solution to the quadratic equation -x2-5x-6=0 using the quadratic formula
Answer:
x = -2; x = -3
Step-by-step explanation:
(-x - 3)(x + 2) = 0
(-x - 3) = 0
x = -3
(x + 2) = 0
x = -2
Whitney needs to borrow $200 for school supplies. If she borrows the same amount from 5 friends, which equation will show now much she owes each friend? $200 ÷ 5 -$200 ÷ 5 $200 ÷ (-5) -$200 ÷ (-5)
Answer:
She'll owe each friend $40.
Step-by-step explanation:
That's a total of $200 borrowed from 5 friends, which comes to:
$200
------------- = $40/friend
5 friends
Answer: A. $200 ÷ 5
Step-by-step explanation:
Sorry about the answer above mine.. that's kinda embarrassing considering how easy this question is. Anyways, the correct answer is A because the outcome will be 40 which is what we want because if you did the math for any other answer, the outcome will be negative.
Solve the equation 8-6z=26
8-6z=26
8-8-6z=26-8
-6z=18
divide by -6 for -6z and 18
-6z/-6=18/-6
z=-3
Check answer by using substitution method
8-6(-3)=26
8+18= 26
26=26
Answer is z=-3
Answer:
answer - 3
Step-by-step explanation:
8 - 6z = 26 Subtract 8 from both sides.
8-8 - 6z = 26 - 8
- 6z = 18 Divide by - 6
-6z/-6 = 18/-6 Do the division. Note: you must leave the letter with 1 in front of it.
z = - 3
how many solutions exist for the givien equation 3(x+10)+6=3(x+12)
For this case we solve the following equation:
[tex]3 (x + 10) + 6 = 3 (x + 12)[/tex]
We apply distributive property to the terms within parentheses:
[tex]3x + 30 + 6 = 3x + 36[/tex]
We add similar terms:
[tex]3x + 36 = 3x + 36\\36 = 36[/tex]
Since 36 equals 36, then the equation will always be true for any value of x.
ANswer:
Infinite solutions
solve the proportional equation below 6/2=(v-8)/(v-3)
½ = v; multiply the divisor to remove the variable from the denominator.
Show all work to multiply (3+ V16)(6-
64).
Regroup terms
(3 + 16V)(6 - 64)
Simplify 6 - 64 to -58
(3 + 16V) * -58
Simplify
= -58(3 + 16V)
Find x when F(x)=10
f(x)=2x-6
just substitute 10 into the equation
10=2x-6
add 6 to both sides
16=2x
divide both sides by 2
x=8
Find the measures of the interior angles.how do you find the measures of the interior angles
Answer:
'm guessing you mean with parallels and a transversal. If this is the case, then find he angle that is either
a; supplementary (creating a flat angle, 180 degrees) or
b; complimentary (creating a 90 degree angle)
Step-by-step explanation:
subtract the supplementary/complimentary angle from either 180 or 90 and the difference is your answer. Hope I helped!
* * * * *
More likely the question is concerned with the interior angles of a polygon. If the polygon is irregular then there is no simple answer. An interior angle can have any value.
However, if it is a regular polygon then the question can be answered. The sum of all the exterior angles is 360 degrees - irrespective of the number of sides (or vertices). Suppose the polygon has n sides/vertices.
Then, since it is regular, each exterior angle is 360/n. Therefore, each interior angle is 180-360/n degrees.
The sum of interior angles of a polygon can be found using the formula (n-2) x 180 degrees.
To find the measures of the interior angles of a polygon, you must first consider the type of polygon you're dealing with. For a triangle, the sum of the interior angles is always 180 degrees. If you're working with another type of polygon, such as a quadrilateral, the sum of the interior angles is greater, and there's a simple formula to follow: (n-2) imes 180 degrees, where n represents the number of sides of the polygon. This means that for a quadrilateral, with four sides, the sum of the interior angles would be (4-2) * 180 degrees, which equals 360 degrees.
When it comes to alternate interior angles, these are pairs of angles found on the inside of two lines that are cut by a transversal. If the lines are parallel, the alternate interior angles are equal in measure. For example, if you have two parallel lines cut by a transversal forming angle a and angle f, then a and f would be alternate interior angles and thus, would have the same measure.
The sum of the exterior angles in any polygon is 360 degrees, regardless of the number of sides. When finding the measure of an exterior angle, knowing the measure of its corresponding interior angle can be helpful because the interior and exterior angles form a linear pair (adding up to 180 degrees). Therefore, if the interior angle is 150 degrees, the exterior angle would be 180 degrees - 150 degrees, which equals 30 degrees.
A basketball has a rebound ratio of 0.8. If you drop the basketball from a heigh of 10cm, what will the height of the 5th bounce be?
[tex]\bf n^{th}\textit{ term of a geometric sequence} \\\\ a_n=a_1\cdot r^{n-1}\qquad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ \cline{1-1} r=0.8\\ a_1=10\\ n=5 \end{cases} \\\\\\ a_5=10(0.8)^{5-1}\implies a_5=10(0.8)^4\implies a_5=4.096[/tex]
- |-9| x |7| =
whats the answer? help please!!
Answer:
Final answer is -63.
Step-by-step explanation:
Given expression is [tex]-|-9| \times |7|[/tex].
Now question says to simplify that expression [tex]-|-9| \times |7|[/tex]
| | indicates absolute function which results only in positive output so |-9| gives 9 only
and |7| gives 7.
then we can rewrite the expression as :
[tex]-|-9| \times |7|[/tex]
[tex]=-(9) \times (7)[/tex]
[tex]=-9 \times 7[/tex]
[tex]=-63[/tex]
Hence final answer is -63.