Answer: Hence, Mean height of the girls is: 1.48
Step-by-step explanation: It is given that:
in a class of 32 students .
the mean height of 14 boys is 1.56 and the mean height of all 32 students is 1.515.
Since there are 14 boys in a class.
So, number of girls is equal to (32-14)=18.
The mean height of 14 boys is 1.56.
Hence the sum of height of 14 boys is= 1.56×14=21.84
Similarly mean height of 32 students is 1.515.
Hence, sum of height of 32 students=1.515×32=48.48.
Let x denote the mean height of 18 girls.
Hence, sum of height of 18 girls is: 18 x.
Now,
18x+21.84=48.48
( since sum of height of girls and boys is equal to the sum of height of all the students)
so, 18x=48.48-21.84
18 x=26.64
Hence, x=1.48
Hence, Mean height of the girls is: 1.48
Which equation best represents the relationship
between x and y in the graph?
A. y = x + 2
C. y = 2x + 2
B. y = 2x - 2
D. y = Vzx - 2
Answer:
C y= 2x +2
Step-by-step explanation:
Look at the graph and look at the dots. For example if you look at negative 1 on the x-axis there is a dot there. so it now you count up to where you see the next dot on the y-axis. Which it goes up 2, then count to the right towards the Y-Axis which is one. now you left with 2/1. since it is going up 2 it will be positive and 2 over 1 is simplified so you are left with 2x and the B will be 2 because the line goes through 2 on the y-axis. This equation should help you y=mx+b m is the slope and B is the y axis
what is this??? 28÷7×4=?
Answer: 16
Step-by-step explanation: 28÷7=4
4×4 = 16
What would the missing coordinate be if there was an inverse relationship between points (12,3) and (x,9)
Answer:
4.
Step-by-step explanation:
inverse proportion:
12/3=x/9.
3x3=9 therefore 12/3 which is 4.
The missing coordinate is 4.
Hope this helps plz hit the crown :D
The rope that can fence out the square garden of length 250m can fence another circular garden twice. What is the area and perimeter of the circular garden?
(Wrong answers will be reported)
Answer:
Perimeter of circular garden=500m
Area=19,894 sq m
Step-by-step explanation:
250x4=1000
1000/2=500m circle perimeter
Pi x Dia=Circumference
3.14159 x Dia=500m
Dia=159.16m
Rad=159.16/2=79.58m
Area=Pi x Rad^2=2.14159 x 79.58^2=19,894 m^2
Answer: The circumference of the circular garden is 500 meters.
The area is approximately 19891 square meters.
If you use a Rounded value of 80m for the radius, the Area works out to about 20106 square meters.
Step-by-step explanation:
The total length of the rope is 1000m. 4×250=1000
That is enough to fence the circular garden twice, so the "perimeter" of that garden-- the circumference-- is 500m
To find the area, first find the diameter:
500÷π = 159.15
Area of a circle is A=πr²
The radius is half the diameter.
79.57 so r² is about 6331.4
Multiply by π to get the area:
about 19890.6 m²
If x = ─7 and y= 3 , find i) x+y ii) xy iii) xꓥ2 + yꓥ2 WHAT IS THE ANSWER
Answer:
Step-by-step explanation:
1. X + y
Putting values of x and y
-7 + (-3)
= - 10
2. xy
Putting values of x and y
(-7)(-3)
= 21
3. x2 + y2
Putting values of x and y
= (-7)2 + (-3)2
= 49 + 9
= 58
What is the number of possible outcomes when a coin is tossed one time
Answer:
2.
Step-by-step explanation:
the coin could be heads or tails, but knowing me prolly 3 because I would lose the coin when I flip it.
Answer:
The possible outcomes when a coin is tossed one time are heads and tails. therefore, the number of possible outcomes is 2.
Step-by-step explanation:
I hope it's helpful!
Simplify
1/2 + (3/8 - 1/8)^2
A car with a mass of 1000 kg crashes into a wall. The acceleration before the crash was 5 m/s2. What is the force
Answer: 10m/8
Step-by-step explanation: 5 ( m/s) *2= 10/8
Information For The Question:
Maya makes trail mix by combining 1\4 cup of mixed nuts, 1\3 cup of dried fruit, and 1\6 cup of chocolate morsels.
Question:
What is the total amount of ingredients in her trail mix using 12 as the Denominator?
Answer:
3/4
Step-by-step explanation:
1/3 + 1/4 + 1/6=3/4 of a cup-total amount of ingredients in her trail mix.
Simplify the following:
1/3+1/4+1/6
Put 1/3+1/4+1/6 over the common denominator 12. 1/3+1/4+1/6 = 4/12+3/12+2/12:
4/12+3/12+2/12
4/12+3/12+2/12 = (4+3+2)/12:
(4+3+2)/12
4+3+2 = 9:
9/12
The gcd of 9 and 12 is 3, so 9/12 = (3×3)/(3×4) = 3/3×3/4 = 3/4:
What’s the answer
Answer choices are :
A ) 26
B ) 28.8
C ) 43.2
D ) 144
Answer:144
Step-by-step explanation:
A pole that is 3.4 m tall casts a shadow that is 1.01 m long At the same time, a nearby tower casts a shadow that is 49.75 m long . How tall is the tower? Round your answer to the nearest meter.?
Answer:
167 meters
Step-by-step explanation:
3.4 divided by 1.01 is 3.3663
3.3663 x 49.75= 167.4752475 or 167
A man gives 1/4 property to his son, 1/3 of the remainder to his daughter and the rest part to hos wife, what portion did his wife get?
Answer:
5/12 goes to wife I don't really know how to explain it
i'm stuck on this one :(
Answer:
they are both correct, all sides are equal to eachother yknow?
Step-by-step explanation:
00:00
Select all the numbers that are irrational.
6.7234724...
315
8
-0.25
✓7
17
36
Answer:
6.7234724... ; ✓7
Step-by-step explanation:
In the most simplest of terms, we can explain irrational numbers as numbers which cannot be expressed as a ratio of two integers usually because they cannot give an exact value when evaluated.
Using the values given :
6.7234724... - - >This is an irrational number because the '...' depicts that the values are unending and as such an exact expression in the form of a ratio (p/q) cannot be determined.
315, 26, 17, 8 - - - > Is a rational number, it could be express in ratio form as : 315/1. 315 is an integer and all integers are rational.
-0.25 - - > it could be expressed as - 1 /4. Hence it is a rational number.
✓7 - irrational as the simplification gives : 2.6457513...
The regular price of a jacket is $48.00. What is the sale price of the jacket if it is marked 25% off
Answer:
$36 for the jacket
4
3
(2
3
+4
2
)=start fraction, 3, divided by, 4, end fraction, left parenthesis, 2, cubed, plus, 4, squared, right parenthesis, equals
Step-by-step explanation:
here
hshdhdhjdbdgdjjd
The solution to the given expression starts fraction, 3, divided by, 4, end fraction, left parenthesis, 2, cubed, plus, 4, squared, right parenthesis, equal to 18.
What is the fundamental principle of multiplication?If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
We can solve the given expression by simple multiplication,
[tex]\frac{3}{4} (2^{3} +4^{2} )\\\\\frac{3}{4} (8 +16 )\\\\\frac{3}{4} (24 )\\\\3 \times 6\\18[/tex]
Learn more about multiplications;
https://brainly.com/question/14059007
#SPJ2
What is -22.74 - (18.18) ?
Answer: -40.92
i used the calculator :)
PLS HELP ME I WILL GIVE BRAINLIEST ASAP!! PLS HELP ME I WILL GIVE BRAINLIEST ASAP!!
PLSSSS GRAPH IT AND WRITE A SOLUTION!!
can someone help me?
hi answers this question with it solve I will mark brainlist
Answer:
9.c
10.a
11.c
12.a
13.b
14.b
15.b
1.a -4y+5x+8xy+6y-10xy-8x
we collect like terms so -4y+6y+5x-8x+8xy-10xy
2y-3x-2xy
b.-2x+3y+4xy-(-2x-3y+4xy)
-2x+3y+4xy+2x+3y-4xy
-2x+2x+3y+3y+4xy-4xy
3y+3y=6y
Answer:
hiii and have a nice day
hope u will not busy
hahaha
sin 60° x tan 45° what is that is for a homework
Answer:
75 degrees
Step-by-step explanation:
60 = 45= 75 = 180
Because every triangle has 180 degrees in it
IL GIVE BRAINLIEST AND MOREEE HELP
Answer:
-15
Step-by-step explanation:
Hope this Helps
Answer: -335
Step-by-step explanation:
At the start of the napkin aisle, you see
a list of the different package options,
shown in the table below.
Are the price of napkins and the
number of napkins in each package
proportional to each other? Why or
why not?
Answer:
D
Step-by-step explanation:
Proportional mean the same but 100 napkins is cheaper then 50 so it is not proportional
Answer:
The answer is D.
No, the ration found by dividing the price of napkins by the number of napkins is not the same for each pack.
Step-by-step explanation:
The prices and the number of napkins in each package are not proportional to each other because they all not equal to each other when the number of napkins is divided by the price
Hope this helps!!! :)
BRAINLIEST PLEASE
Which expression is modeled on the number line
Answer:
D
Step-by-step explanation:
if you were to chose c you would find that to negatives make a positive and the first negative has to be there so d would be the best possible answer
the first person is wrong:( the answer is c !!!
A person can pay $42 for a membership to the art museum and then go to the museum for just $4 per visit. What is the maximum number of visits a member of the art museum can make for a total cost of $90 ?
Answer:
The member of the art museum can visit 22 times
Step-by-step explanation:
point q is located at (18, 5). The x-coordinate of point r id half as much as the x-coordinate of point Q The y-coordinate of point r is 3 more than the y-coordinate of point q
Answer:
R (27, 8)
Step-by-step explanation:
The coordinate plane is a two-dimensional plane consisting of the y axis (vertical line) and x-axis (horizontal line). The origin is known as the zero point (reference point) is the intersection of the x axis and y axis.
A point on the coordinate plane is represented by (x, y) where x is the x coordinate and y the y coordinate.
Given point Q = (18, 5), the x coordinate is 18 and the y coordinate is 5.
Let the location of point R = (a, b)
a = x-coordinate of point Q + 1/2 of x-coordinate of point Q = 18 + (1/2)*18 = 27
b = y-coordinate of point Q + 3 = 5 + 3 = 8
Therefore R = (27, 8)
Helppppp pleaseeeeee
Answer:
6 ft
Step-by-step explanation:
6^3 = 216
Solve the system using the substitution method.
2x+y=7
x=3y
Demonstrate how you substituted to write an equation in one variable.
Answer:
(3,1)
Step-by-step explanation:
work is in picture
Select all expressions that are equivalent to 3 x 5 − 6 x 4 y + 3 x 3 y 2 . A. 3 x 3 ( x − y ) 2 B. 3 x 3 ( x 2 − 2 x y + y 2 ) C. 3 x 3 ( x + y ) 2 D. 3 x 3 ( x − y ) ( x + y ) E. 3 x 3 ( x − y ) ( x − y )
Answer:
B
Step-by-step explanation:
Factorizing 3x^5−6x4y+3x^2y^2
[tex]= (3x\left(x^4-8y+xy^2\right)[/tex]
=
[tex]3x^3 ( x^2-2 x y + y^2 )[/tex]
Answer:
B
Step-by-step explanation:
Latest Releases Depot rents DVD/Blue ray for $3.00 each and has no membership fee. Video for You rents DVD/Blue rays for $2 each but has a membership fee of $15.
Answer:
15 rentals
Step-by-step explanation:
Latest Releases Depot
rent = $3 per DVD
membership= free
let the number of DVD be x
let the expression for the total be
y= 3x----------------1
Video for You
rent= $2 per DVD
membership= $15
let the number of DVD be x
let the expression for the total be
y= 15+2x----------------2
equate 1 and 2
3x=15+2x
collect like terms
3x-2x=15
x= 15
Hence the number of DVDs needed for the two rentals to have the same amount is at least 15 rentals
