Answer:
20
Step-by-step explanation:
The lower quartile Q₁ is the value at the left side of the box, that is
Q₁ = 20
There were 400 students in attendance. 51% are boys. How many are boys (show your work)
Answer:
204 out of 400 students are boys; 204
Step-by-step explanation:
x/400 = 51/100
100x = 51 x 400
100x = 20400
100x/100 = 20400/100
x = 204
DEKU
Answer:
201-boys 199-girls
i dont think if my answer are right..
Step-by-step explanation:
What is the area of the triangle?
Answer:
A = 48 in²
Step-by-step explanation:
The area (A) of the triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )
Here b = 24 and h = 4 , then
A = [tex]\frac{1}{2}[/tex] × 24 × 4 = 12 × 4 = 48 in²
Answer:
A = 48 in.^2
Step-by-step explanation:
Area of triangle = (Base * height) / 2
Area of triangle = (24*4)/2
Area of triangle = 48 in.^2
pls Solve my question
hope this will help you more
PLEASE HELP ASAP!!!
The owner of a small restaurant bought 75 kilograms of rice. Each week, the restaurant uses 4.5 kilograms of rice.
Function r gives the remaining amount of rice, in kilograms, as a function of the number of weeks, w, since the restaurant owner bought the rice.
B) Use function notation to write a rule that defines function r.
Answer:
75 - 4.5 w would equal r if we knew what w is, then finding r would be as easy, when i divided 75 by 4.5, it gave me 16 two / thirds, so the remainder is two/thirds of 4.5 which is 3, so r = 3 and if you wanted to find w, it is 16
Step-by-step explanation: math, it's great, but horrible at the same time
pls help me solve thisss
Answer:
D. 8
Step-by-step explanation:
[tex]3\frac{3}{5} x2\frac{2}{9}[/tex] Convert the fractions into a improper fractions
[tex]\frac{18}{5} x\frac{20}{9}[/tex] Multiply 18 x 20 / 5 x 9
[tex]\frac{360}{45}[/tex] Simplify
8
Find the product of (4a-5b) and (3a+4b-2c).
AISO, Find the value of the product when A=2 b-3 and C= -2
Answer:
solution given:
product of (4a-5b) and (3a+4b-2c) is:
(4a-5b)*(3a+4b-2c)4a(3a+4b-2c)-5b(3a+4b-2c)12a²+16ab-8ac -(15ab+20b²-10bc)12a²+16ab-8ac-15ab-20b²+10bc12a²+16ab-15ab+10bc-8ac-20b²12a²+ab+10bc-8ac-20b²the value of the product when A=2 b-3 and C= -2 :
(4a-5b)*(3a+4b-2c)
(4*2-5*(-3))*(3*2+4*(-3)-2*(-2))(8+15)(6-12+4)23*(-2)-46A study of the effects of acid rain on trees in the Hopkins Forest shows that 25 of 100 trees sampled exhibited some sort of damage from acid rain. This rate seemed to be higher than the 15% quoted in a recentEnvironmetricsarticle on the average proportion of damaged trees in the Northeast. Does the sample suggest that trees in the Hopkins Forest are more susceptible than trees from the rest of the region
Answer:
Yes
Step-by-step explanation:
We can test this claim using the one proportion z test :
x = 25 ; n = 100
Phat = x / n = 25 / 100 = 0.25
H0 : P = 0.15
H0 : P > 0.15
The test statistic :
Z = (phat - p) ÷ √p(1-p)/n
Z = (0.25-0.15) ÷ √(0.15*0.85)/100
Z = 2.8
Using the Pvalue from Zscore calculator :
α = 0.05
Pvalue (Z < 2.8) =0.0026
Pvalue < α ; We reject the Null
Does anyone know how to do this?
Answer:
sorry ma g dont know this but my boy aaron yeager is smart he can help u 839
Step-by-step explanation:
Sofia works at a company where she gets a set 5% raise every year. If her current salary is $83,000, what will her salary be in 2 years?
Answer:
the answer is 91,5007.50 dollars
Step-by-step explanation:
find the first year you would do 83,000 times 105% and that would equal 87,150 next you would do 87,150 times 105% and I would equal to 91,507.50
Answer:
83830
Step-by-step explanation:
because 5percent of 83000 is 412 and 412 plus 412 is 830 and plus 83830
Nandan bought some pencils at the rate of Rs 20 per pencil . He also bought an equal number of erasers at the rate of Rs 4 per eraser . He made 40 % profit on pencils and 50 % profit on erasers . At the end of the day, all the pencils and erasers were sold out and he made a profit of Rs 470 . Find the number of pencils he purchased.
Answer:
47 pencil
Step-by-step explanation:
Let x represent the number of pencils that were bought. Since equal number of erasers where also purchased, hence x erasers were purchased.
Cost of pencils = Rs 20 per pencil * x pencils = 20x
Cost of erasers = Rs 4 per eraser * x eraser = 4x
40% profit was made on pencils, hence:
Profit on pencils = 40% of cost price = 0.4 * 20x = 8x
50% profit was made on erasers, hence:
Profit on eraser = 50% of cost price = 0.5 * 4x = 2x
Since the total profit from pencil and eraser was Rs 470, hence:
8x + 2x = 470
10x = 470
x = 47
Therefore he purchased 47 pencil
Find the value of x. Round your answer to the nearest tenth of a unit.
Answer:
Sin31°= 11/x
x = 11/Sin31
x= 21.4. ( Nearest tenth).
Answer:
x ≈ 21.4
Step-by-step explanation:
Using the sine ratio in the right triangle
sin31° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{11}{x}[/tex] ( multiply both sides by x )
x × sin31° = 11 ( divide both sides by sin31° )
x = [tex]\frac{11}{sin31}[/tex] ≈ 21.4 ( to the nearest tenth )
I write down a number lager than 1 and less than 10. Find the chance that the number is a factor of 12.
Answer:
4
Step-by-step explanation:
2*6 = 12
3*4 =12
these are all the numbers that would be a factor of 12 between 2-10
which ordered pair is a solution of the equation 5x-3y=-12
A) (-3,-1)
B) (-1,-2)
C) (-1,-3)
D) (-2,-1)
PLEASE EXPLAIN ANSWER
i put the picture below
Answer:
I don't know the answer I just need the points
Step-by-step explanation:
..
Find the value of x.
Show work. please help
Answer:
x=7
Step-by-step explanation:
Since this is an isosceles triangle the two angles are equal.
3x+6 = 5x-8
Subtract 3x from each side
3x+6-3x = 5x-8-3x
6 = 2x-8
Add 8 to each side
6+8 = 2x-8+8
14 = 2x
Divide each side by 2
14/2 = 2x/2
7 = x
Answer:
x = 7
Step-by-step explanation:
Its two angle is equal so, it is isosceles triangle.
3 x + 6 = 5 x - 8 .. ( in isosceles triangle two side are equal).
3 x + 6 = 5 x - 8
Subtract 3 x from both side
3 x - 3 x + 6 = 5 x - 3 x - 8
6 = 2 x - 8
add 8 to each side
6 + 8 = 2 x - 8 + 8
14 = 2 x
Divide each side by 2
14 / 2 = 2 x / 2
7 = x
Which of the following sequences is not geometric
Find the midpoint of the segment with endpoints:
(9,8) and (3,5).
pls pls pls pls help!!!! for geometry final
Answer:
Step-by-step explanation:
here x1=9 y1=8 x2=3 y2=5
midpoint=(x2+x1/2 , y2+y1/2)
=(3+9/2 , 5+8/2)
=(12/2 , 13/2)
=(6 , 13/2)
Find the x. Please help
Answer:
14
Step-by-step explanation:
24/16 = 21/x
(24/16) • 21 = 14
Answer: I’m pretty sure it’s 14
Step-by-step explanation:
Two numbers are in the ratio 3:5. If one of them is greater than the other by 10,Find the smaller number.
Answer:
smaller number = 15
Step-by-step explanation:
Let the two numbers be 5x and 3x respectively.
According to the question —
5x — 3x = 10
2x = 10
x = 5
Thus the smaller number is 3 × 5 = 15
Answer:
15?
Step-by-step explanation:
Sorry I'm not entirely sure that is correct but I hope it helped!
The path of a breaching ocra whale can be modeled by the function k(x) = x^2 - 2x - 8, where x is the time elapsed in seconds under water, and k(x) is the height in ft below the water.
Determine HOW LONG is the ocra (killer) whale underwater to the nearest second. MUST BE SOLVED ALGEBRAICALLY!
Answer:
The time duration of the ocra whale spends under water is 4 seconds
Step-by-step explanation:
The equation that model the path of the ocra whale is presented as follows;
k(x) = x² - 2·x - 8
Where;
x = The time elapsed in seconds under water
k(x) = The height in feet below water
Therefore, the point where the ocra whale enters the water, k(x) = 0
At the point of submerging below the water surface, we have;
k(x) = 0 = x² - 2·x - 8
Factorizing the quadratic equation gives;
0 = x² - 2·x - 8 = (x - 4)·(x + 2)
Therefore, when k(x) = 0, either;
(x - 4) = 0, which gives, x = 4
(x + 2) = 0, which gives, x = -2
Given that 'x' represent the time, the time elapsed while the whale is under water, x = 4 seconds
Conner is three times as old as
Jackson. represent Conner's age.
Answer:
C(coner) J(Jackson)
Step-by-step explanation:
Jx3=C age
100 POINTS IF YOU GET IT RIGHT
Use the Rational Root Theorem to list all possible rational roots of the polynomial equation
x^3 – 5x^2 - 4x + 8 = 0. Do not find the actual roots.
The person above this should have the answer. It seems like nobody else is answering.
Find x and the y intercepts of the photo
on a number line a number b is located the same distance from 0 as another number a but in the oppsite direction the numbber b varies directly with the number a for example b=2 3/4 when a = -2 3/4 which equation represents the direct variation between a and b
a. b=-a
b. -b=-a
c. b-a=0
d. b (-a)=0
b on edge ;)
wooski got shot now he takin medicine but anyway GDK
help me with this math question
Answer:
x= 44.1
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opp / hypotenuse
sin 27 = 20/x
x sin 27 = 20
x = 20 / sin 27
x= 44.05378529
Rounding to the nearest tenth
x= 44.1
Find the average rate of change of
Answer:
Rate of change = - 4
Step-by-step explanation:
[tex]h(x) = -x^2 + 3x + 1 \\\\h(2) = -(2)^2 + (3 \times 2) + 1 = - 4 + 6 + 1 = 3\\h(5) = - (5)^2 + ( 3 \times 5) + 1 = - 25 + 15 + 1 = -9\\[/tex]
Rate of change :
[tex]= \frac{h(2) - h(5)}{2-5} = \frac{3-(-9)}{2-5} = \frac{3+9}{-3} = - \frac{12}{3} = -4[/tex]
4) PLEASE HELP Ray wants to buy a computer game that is originally priced at $38.50. The
store is having a 20% off sale. Ray also uses a coupon to receive an
additional 15% off the price of the game. The sales tax rate is 7%. What is
the cost of the game, to the nearest cent? Show your work. [2 points)
.
Determine the sale price of the computer game.
.
Determine the cost of the game based including the sales tax based on the
discounted price.
Answer:
$32.96
Step-by-step explanation:
38.50 (20%) + 7.70
38.50 - 7.70 = 30.80
:Before tax:
$30.80
30.80(7%) = $2.16
30.80 + 2.16 = 32.96
:Total after tax:
$32.96
need this solved for geometry ! thanks !
What is the solution to the system of equations?
Solve using the substitution method.
-5x – y=6
-8x + y = 20
A) (-2,4)
B) (1, -2)
D) (2, 1)
C) (1,2)
Answer:
-8x+y=20
y=20+8x
-5x-y=6
-5x-(20+8x)=6
-5x-20-8x=6
-13x=6+20
-13x=26
-13x÷ -13=26÷ -13
x= -2
-8x+y=20
-8×(-2)+y=20
16+y=20
y=20-16
y=4
A) (-2,4)
PLS HELP! WILL GIVE BRAINLIEST
Answer: do 2.1 times 100 than that answer times 0.6
Step-by-step explanation:
