A survey asked 40 students if they play an instrument and if they 20 students are in band.
3. 20 students are not in band.
Which table shows these data correctly entered in a two-way frequency table?
Total
Band
Not in band
D.A.
0
20
20
Play instrument
Dont play
instrument
15
20
5
40
15
25
Total
Toto
Band and play
instrument
Not in band and
play instrument
B.
Not in band and
PREVIOUS
a
Answer: try the answer B
Step-by-step explanation:
can someone help me with this question
Answer:
A 50
B 10
C 12/5
D 5
E 21
F 100
expand if necessary combine like terms
(5x+1) (5x-1)=
Answer:
25x^2 - 1
Step-by-step explanation:
khan
solve for x
11 to the x power is equal to 11 to the 4th power times 11 to the 5th power.
exponets.
Answer:
x = 9
Step-by-step explanation:
Using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] ⇔ [tex]a^{(m+n)}[/tex]
Given
[tex]11^{x}[/tex] = [tex]11^{4}[/tex] × [tex]11^{5}[/tex] = [tex]11^{(4+5)}[/tex] = [tex]11^{9}[/tex]
Since the bases on both sides are common, then equate the exponents
x = 9
What the percent of 160 is 56? Use the bar model
Answer:
35%
Step-by-step explanation:
See attached for visual
160= 8*20 8 = 1/20 = 5% of 16056= 8*77*5% = 35%56 is 35% of 160
What is the value of x
Answer:
x=8 cm
Step-by-step explanation:
a + b2 = c2
6 squared + b = 10 squared
36 + b = 100
b=100-36
b=64 squared = 8
Answer:
The answer is 8.
6 squared plus b is equal to 100 squared, and all you have to do is simplify the equation nd find the square root of the answer.
Your very helpful my dude
Answer:
Angle 1 or Angle 3
Step-by-step explanation:
They are the only two that are immediately next to angle 2
Answer:
angle 1
Step-by-step explanation:
Need the answer to this equation
.3a + .8 = .5a - 2
Answer:
14
Step-by-step explanation:
.3a+.8=.5a-2
Subtract. 3a from both sides:
.8=.2a -2
Add 2 to both sides:
2.8=.2a
Multiply both sides by 5:
a=14
Hope this helps!
Answer:
a = 14
Step-by-step explanation:
.3a + .8 = .5a - 2
.3a - .5a = -2 - .8
-.2a = -2.8
a = -2.8/-.2
a = 14
1 ½ miles in ¾ hour
find the unit rate
Answer:
Unit rate = 2 mph
Step-by-step explanation:
Distance travelled = 1½ miles = [tex] \frac{3}{2} [/tex] miles
Time taken = ¾ hours
[tex]Unit \: rate = \frac{distance \: travelled}{time \: taken} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{ \frac{3}{2} }{ \frac{3}{4} }\\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{3}{2} \times \frac{4}{3} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2 \: mph (miles \: per \: hour)[/tex]
what is the median of this data set? 14,16,18,21,34,60
Answer:
19.5
Step-by-step explanation:
there are two middle values in this data set so you have to add and divide them. 18+21=39
39/2= 19.5
hope this helps ! :)
Answer:
19.5
Step-by-step explanation:
middle is 18 and 21 so we need to take the average of these 2 numbers
18+21=39
39/2=19.5
Circle P has a circumference of approximately 75 inches.
What is the approximate length of the radius, r? Use 3.14 for . Round to the nearest inch.
a
38 inches
b
24 inches
c
12 inches
d
46 inches
Answer:
C 12 inches
Step-by-step explanation:
you get the circumference formula C = 2 *pi *r
then divide 2 from 75 and then pi and then you get your radius
i hope this helped<3
Step-by-step explanation:
a 38 inches
The radius is half of the circumference.
Now lets figure out what we know.
1.Our circumference is 75 inches
We would have to divide 75 by two to get it in half.
75÷2=37.5
Now we round to the nearest inch.
And our answer is 38 inches (A)
A lot is 60m by 34 m. A house 25 m by 9 m on the lot. How much area is left over
Answer:
The left over area is 1,815 m.
Step-by-step explanation:
60x34= 2,040
25x9=225
2040-225= 1,815.
what is f(x) = 2 ∗ 5−x
x=10 if you are looking for the x value
Step-by-step explanation:
Find the value of .
Answer: 25
Step-by-step explanation: In this problem, we're given a diagram and were asked to find the value of x.
Since the two lines in the figure intersect, we know that they form vertical angles and remember that vertical angles are always congruent, or of equal measure.
Therefore, since we know that one angle measures 75° and the other angles measures 3x°, we can setup the equation 75 = 3x.
To get x by itself since 3 is being multiplied by x,
divide both sides of the equation by 3.
On the left, 75 divided by 3 is 25
and on the right, the 3's cancel.
So the value of x in the diagram shown is 25.
-4x-y=24
Whats the missing value in the solution to the equation.
(__,8)
Answer: -8
Step-by-step explanation: First, substitute 8 for y and then solve the remainder of the problem.
-4x - 8 = 24
-4x - 8 + 8 = 24 + 8
-4x = 32
-4x/-4 = 32/-4
x = -8
what is the correlation coefficient for the data in the table -0.93,-0.27,0.27.0.93
The answer to this question is the letter D.
The correlation coefficient is a statistical measure of the strength of the relationship between the relative movements of two variables. The values range between -1.0 and 1.0. A calculated number greater than 1.0 or less than -1.0 means that there was an error in the correlation measurement.
How to find the correlation coefficient for the data table -0.93,-0.27, 0.27, 0.93?
This is because the correlation coefficient focuses on the linear relationship between two variables.
numbers between -1 and 1 should be one of the values related to the bill. As you can the letter D is the closest and most realistic answer.
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In the right shown m
Answer:
Please clarify your question
Step-by-step explanation:
Which function has the greater slope and what does it indicate?
Answer:
The math function has the greater slope, which shows that the estimated time per question for math is greater than the estimated time per question for language arts.
OR B on edge
Step-by-step explanation:
The cauliflower function has the greater slope, which shows that the cost per pound of cauliflower is increasing at a faster rate than the cost per pound of broccoli.
What is Slope?A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the
change in y coordinate with respect to the change in x coordinate as,
m = Δy/Δx where, m is the slope
First, Slope for Broccoli
Slope = (3.6 - 3) / (3 - 2.5)
Slope = 0.6 / 0.5
Slope = 1.2
Second, Slope for Cauliflower
slope = (4.50 - 2.75) / (4.5 - 2.75)
= 1.75 / 1.75
= 1.000
Since the slope of the cauliflower function (1.0000) is greater than the slope of the broccoli function (0.8364), we can conclude that the cauliflower function has the greater slope.
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Fenyang got 666 rabbits to raise on his farm. From the following month forward, the rabbit population doubled every month.
Answer:
geometric sequence
Step-by-step explanation:
At a bake sale, there are 50 chocolate cupcakes and 30 vanilla cupcakes. Of these cupcakes, 15 chocolate and 5 vanilla have cream filling. What percentage of the cupcakes have cream filling?
Answer:
25%
Step-by-step explanation:
50+30 = 80
15 + 5 = 20
20/80 = 0.25, or 25%
Answer:
25% of cupcakes have cream filling
Step-by-step explanation:
15+5=20
50+30=80
20÷80=0.25
0.25×100=25
Four workers finish some work in 90 minutes. How much time it will take six workers to finish same work
Answer:
135 minutes.
Step-by-step explanation:
Let's use a ratio:
workers : minutes
4 : 90
1 : 22.5
6 : 135
It will take them 135 minutes (it seems wrong but...)
HELLLPPP PLEASE WILL GIVE BRAINLIEST
Answer:
-3
Step-by-step explanation:
Convert every fraction to an improper fraction just to make it easier.
43/10 - (12/5x + 11/2) = 1/2 (-18/5x + 6/10)
Distribute.
= 43/10 -12/5x - 11/2 = -18/10x + 6/10
Simplify using the common denominator, which is 10.
43/10 - 24/10x - 55/10 = -18/10 + 6/10
Isolate the x.
-24/10x + 18/10 = -43/10 + 55/10 + 6/10
Simplify.
-6/10x = 18/10
Multiply by the reciprocal (basically dividing fractions)
18/10 x -10/6
= -3
Answer:
x= -3
Step-by-step explanation:
43/10-12/5x-11/2=9/5x+3/5
-6/5=12/5x=-9/5x+3/5
-6-12x=-9x+3
-3x=9
x=-3
The areas of the squares adjacent to two sides of a right triangle are 32 units^2 2 squared and 32 units^2 Find the length, xxx, of the third side of the triangle.
Answer:
8 units
Step-by-step explanation:
If the area of the squares are 32 units^2, we have that:
Area = Side * Side
Side^2 = 32
Side = sqrt(32) = 5.657 units
So as the squares are adjacent to two sides of the triangle, we have that the triangle has two sides of 5.657 units
As it is a right triangle, we can use the Pythagoras' theorem:
c^2 = a^2 + b^2
c^2 = 5.657^2 + 5.657^2
c^2 = 64
c = 8 units
Answer:
its 8
Step-by-step explanation:
x y 3 12 5 20 6 24 8 32 The table shows a proportional relationship between x and y. What is the unit rate of y per x? A) 1 B) 2 C) 3 D) 4
Answer:
D.6
Step-by-step explanation:
Answer:d)4
Step-by-step explanation:
please help i mark brainliest... Students in Mrs. Walsh’s math class wanted to know the favorite snacks of students in the school. How could they generate a random sample to survey?
Line up the students by height and choose the first 20 students
Use the school roster and randomly choose 50 boys.
Obtain an alphabetized list of all the students in the school and select every seventh student.
Place all the names of the students in Mrs. Walsh's math class in a hat and randomly select 10 students.
Answer:
Step-by-step explanation:
Yes, because the sample is random. If she had chosen the participants in any way other than randomly, it would not be representative of her entire school.
2+3=8,
3+7=27,
4+5=32,
5+8=60,
6+7=72,
7+8=??
help i need this what is it
Answer:
98
Step-by-step explanation:
2+3=2*[3+(2-1)]=8
3+7=3*[7+(3-1)]=27
4+5=4*[5+(4-1)]=32
5+8=5*[8+(5-1)]=60
6+7=6*[7+(6-1)]=72
therefore
7+8=7*[8+(7-1)]=98
x+y=x[y+(x-1)]=x^2+xy-x
Answer:
96?
Step-by-step explanation:
i guessed i mean it has to be greater than 95 and less than 100
IM DOIGN A MATH TEST AND I NEED HELP RN
In Circle P, DB and AC are diameters. The measure of angle APD is 50 degrees and PB = 9 cm.
Find the length of arc DC.
Answer:
its 43
Step-by-step explanation:
i had a test with the same question, i promise its right :)
x2 +8x+16=0 in factoring algorithm
Answer:
(x+4)^2 =0
Step-by-step explanation:
x2 +8x+16=0
What 2 numbers multiply to 16 and add to 8
4*4 = 16
4+4 =8
(x+4) (x+4) =0
(x+4)^2 =0
what is m equal to.
4(m − 13) − 8 = 8
Answer:
m = 17
Step-by-step explanation:
[tex]4(m - 13) - 8 = 8 \\ 4(m - 13) = 8 + 8 \\ 4(m - 13) = 16 \\ (m - 13) = \frac{16}{4} \\ m - 13 = 4 \\ m = 4 + 13 \\ \huge \red { \boxed{m = 17}}[/tex]
How can you find f(2) if f(x) = -3x2 – 7?
Answer:
-3(2) x 2 -7 = -6x2-7 =-19
Step-by-step explanation:
The value of f(2) for the given function f(x) = -3x² – 7 will be -19.
What is a function?A certain kind of relationship called a function binds inputs to essentially one output.
The machine will only accept specified inputs, described as the function's domain, and will potentially produce one output for each input.
As per the given function,
f(x) = -3x² – 7
Put x = 2
f(2) = -3(2)² - 7
f(2) = -2(4) - 7
f(2) = -8 - 7 = -15
Hence "The value of f(2) for the given function f(x) = -3x² – 7 will be -19".
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