Answer:
B. 34%.
Step-by-step explanation:
94 - 78 = 16 which is 2 times the standard deviation from the mean.
For a normal distribution this is 34% of the total students.
Can someone help me with number 6 answer is not B I’m not sure what is I need help plzzzzz
Answer:
Its D
Step-by-step explanation:
Katie is 2 yes older than tiffany. 3 years ago, the ratio of their ages is 5/4. How old is each one today? Please show your work
Answer:
28 and 23
Step-by-step explanation:
Three years ago Katie was 25 and Tiffany was 20
What is the sum
8+{-12}
Answer: -4
Add -12+8 or 8+(-12) and get -4
Answer:
-4
Step-by-step explanation:
NOte that - × - =+
+ × +=+
- × + =-
+ × -= +
So according to the question
8+(-2)
Which means that
8((+)×(-12))
8-12
-4
Therefore the final answer is-4
Solve: 2x²+10x−12=0,
Enter only integer(s) or fraction(s).
Answer:
x = 1, -6
Step-by-step explanation:
We can use the quadratic formula (also attached) to solve this. All we need to do is substitute for the values and solve the equation like below.
a = 2, b= 10, c = -12
find 5/6 of 12
show how you got the answer
Answer:
10
Step-by-step explanation:
First divide by six to see how much a sixth is then multiply by five
12/6 = 2
2 x 5 = 10
Answer: 10
Step-by-step explanation:
5/6 of 12
Of in mathematics is multiplication
Meaning
5/6×12
Multiply, you have
=60/6
=10
x-3y=16 4x-y=19
Substitution / Will mark brainliest ASAP
Answer:
Step-by-step explanation:
Add these 2 equations. 5x-4y=35
X-4y=7
x-y=7/-4
Which expressions are equivalent to this expression?
30x2 − 5x − 10
5x(6x − x − 2)
5(2x − 1)(3x + 2)
-5(-6x2 + x + 2)
3x(2x − 1) + 2(2x − 1)
5(2x + 1)(3x − 2)
(10x − 5)(3x − 5)
The required factors of the given quadratic polynomial is
[tex]5(3x-2)(2x+1)[/tex]
Quadratic Polynomial:
The general form of the quadratic polynomial is
[tex]ax^2+bx+c[/tex]
we can factorize the quadratic polynomial into linear factors
How to factorize quadratic polynomial?We have given quadratic polynomial is
[tex]30x^2-5x-10[/tex]
take 5 as common
[tex]5(6x^2-x-2)[/tex]
Factorize the quadratic into linear factors now
[tex]5(6x^2-4x+3x-2)[/tex]
[tex]5(2x(3x-2)+1(3x-2))[/tex]
[tex]5(3x-2)(2x+1)[/tex]
This is the conclusion to the answer.
Hence the correct answer is (E).
Learn more about quadratic polynomial here-
https://brainly.com/question/1214333
#SPJ2
Answer:
you're welcome
what is 2ft/24inch scaled up by a factor of 10?
Answer:
240 inches.
Step-by-step explanation:
To scale up a measurement by a factor of 10, you need to multiply it by 10.
In this case, you want to scale up 2 feet to a larger measurement: 2 feet = 2 x 12 inches = 24 inches
Now, to scale it up by a factor of 10:24 inches x 10 = 240 inches
So, when you scale up 2 feet by a factor of 10, you get 240 inches.
i need to feed the children in my basement, mark me brainliest pls
Can you solve the following puzzle
Cost of 1 icecream is Rs.1
Cost of 1 cake is Rs.5
Cost of 100 biscuits is Rs.5
Now you should spend exactly Rs.100 and you should get exactly 100 items
You should have all items.
Spend Rs. 100 to get 100 items, including ice cream, cakes, and biscuits.
To solve the puzzle, you can buy:
20 ice creams for Rs. 20
4 cakes for Rs. 20
100 biscuits for Rs. 5
This way, you will spend exactly Rs. 100 and get exactly 100 items.
Triangle J L K. Side L K is 4 meters and K J is 3 meters. Angle L is 48 degrees and angle K is 90 degrees. Triangle M O N. Side M O is 1.5 meters, O N is 2 meters, and N M is 2.5 meters. Angle O is 90 degrees.
Use properties of similar triangles to answer the questions.
What is the measure of angle J?
Which side of △MNO corresponds to JK?
What is the ratio of the larger triangle to the smaller triangle?
Answer:
Step-by-step explanation:
Triangles are similar if they have the same shape, but not necessarily the same size.
in this case we have
JK/MO = KL/ON = JL/MN
A) Use properties of similar triangles.
The measurement of angle J can be derived from triangle MNO.
Corresponding angle are congruent.
Angle J in triangle JKL correspond with angle M in triangle MNO.
Therefore:
Tangent M = opp/adj
tanM = 2/1.5
tanM = 1.3
M = tan-¹ 1.3
M = 52.43
J = M = 52.43°
B) MO in △MNO corresponds to JK in △JKL
C) JK/MO = KL/ON = JL/MN
find JL using Pythagoras theorem
JL² = KL² + JK²
JL² = 4²+3²
JL = √(16+8)
JL = 5
JK/MO = KL/ON = JL/MN
= 3/1.5 = 4/2 = 5/2.5 = 2/1
Therefore the ratio of larger triangle to small triangle is 2:1
Answer:
What is the measure of angle J?
42 degrees
Which side of △MNO corresponds to JK?
MO
What is the ratio of the larger triangle to the smaller triangle?
2/1
Step-by-step explanation:
got them all right <3333
kalvin's mother tells him that the chance of a coin showing heads when he tosses it is 1/2. does this mean that every time he tosses a coin twice, he will get one head and one tail.
No it is not necessary that Kelvin will get one head and one tail every time
Explanation:
Probability in math is equal to favorable outcomes/total outcomes
The coin has two sides a head and a tail. When we flip a coin we have 50-50 possibility of getting a head and a tail. It means with every toss we have 1/2 possibility of getting head as well as tail.
But this does not mean that when we toss a coin twice we will get one head at one toss and one tail at another toss.
There is a possibility of getting both heads as well as both the tails.
WILL AWARD BRAINLIEST If the least value the variable k can be is 12, which of the following inequalities best shows all the possible values of k? (3 points) k < 12 k > 12 k ≤ 12 k ≥ 12
Answer:
D
Step-by-step explanation:
If the least it can be is 12, that means that with will have to be equal to 12
so mark out a and b
It also said the least, this means it can not be less than it.
Put these two together and you get D) k is greater than or equal to 12
... The area between the x-axis & y=x² – 3x² + 2x 0
[tex]0 \leqslant x \leqslant 2[/tex]
Answer:
Step-by-step explanation:
hello :
calculate :F(x) = ∫(x²-3x+2)dx
F(x) = (1/3)x^3 -(3/2)x² +2x
the area is :A = F(1)-F(0)
F(1) = (1/3)1^3 -(3/2)1² +2(1) =5/6
F(0) =0
so A= 5/6 Uof area
HELP ASAP!! K12 / KEYSTONE QUESTION! I WILL GIVE BRAINLIEST!! HELP!
1. Find the balance point for the points 0.4, 1.4, and 1.8.
2. Which measure of center is indicated by the center of balance, the median, the mean, or the mode?
3. Define what is meant by “measure of center.”
If you don't know the answer then please don't answer, this is appreciated!
Answer:
A) mean = 1.2
B) median
C) The measures of center use data points to approximate a middle value or average of a given data set
Step-by-step explanation:
The “balance” process was developed to provide another way in which the mean characterizes the “center” of a distribution.
The mean is the balance point of the data set when the data are shown as dots on a dot plot (or pennies on a ruler).
A) The balance point for the points 0.4, 1.4, and 1.8. Will be
(0.4 + 1.4 + 1.8)/3 = 3.6/3 = 1.2
B) The median is the measure of center that is indicated by the center of balance
The median is the value in the center of the data. Half of the values are less than the median and half of the values are more than the median. It is probably the best measure of center to use in a skewed distribution.
C) A measure of central (measure of center tendency) is a value that describe a set of data by identifying the central position of the data set. The three measures of central tendency are the mean, median and mode.
A cone with a height of 50 meters has a volume of 5400pie what is the radius of the cone
Given:
Height of a cone = 50 m
Volume of cone = 5400π
To find:
The radius of the cone
Solution:
Volume of cone:
[tex]$V=\frac{1}{3}\pi r^2h[/tex]
[tex]$\frac{1}{3}\pi r^2h=5400\pi[/tex]
Cancel common factor π on both sides.
[tex]$\frac{1}{3} r^2h=5400[/tex]
Substitute h = 50.
[tex]$\frac{1}{3}\times r^2\times 50=5400[/tex]
Multiply by 3 on both sides.
[tex]$3 \times \frac{1}{3}\times r^2\times 50=5400\times 3[/tex]
[tex]$ r^2\times 50=16200[/tex]
Divide by 50 on both sides, we get
[tex]r^2=324[/tex]
Taking square root on both sides, we get
[tex]r=18[/tex]
The radius of the cone is 18 m.
In which of the expressions below will x = 12.5? Select all
that apply.
A) 4x
--- = 5
10
B) 6.5 + x = 19
C) 88–12 = 96
D) 2x : 5=5
E) 2(x + 4) = 37
The answer is D
2x / 5 = 5
5 x 5 = 25
2x = 25
25/2
x= 12.5
Can you solve this question plz
Answer:
2)These two triangle are congruent because they have same shape and size.
1)it is explained already.
Answer:
Triangles are congruent. It explains everything in the question.
Step-by-step explanation:
We
A father and his son can clean the house together in 7 hours. When the son
works alone, it takes him an hour longer to clean than it takes his dad alone.
Find how long it takes the son to clean alone.
Answer:
3 hours
Step-by-step explanation:
Both Allison and Jennifer jogged on sunday. when asked about their distances, Allison said, " i ran 2 7/8 miles this morning and 3 3/8 miles this afternoon. So, i ran a total of about 6 miles, " and Jennifer said, "i ran 3 1/10 miles this morning and 3 3/10 miles this evening. i ran a total of 6 4/10 miles."How do their answers differ? explain why they are both correct.
Answer:
1. Their answers differ because of approximation
2. See Explanation Below
Step-by-step explanation:
Given
Allison
[tex]Morning: 2\frac{7}{8} miles[/tex]
[tex]Afternoon: 3\frac{3}{8} miles[/tex]
Total: About 6 miles
Jennifer
[tex]Morning: 3\frac{1}{10} miles[/tex]
[tex]Afternoon: 3\frac{3}{10} miles[/tex]
Total: [tex]6\frac{4}{10} miles[/tex]
Required
How their answers differWhy they are both correctHow their answers differ
To understand how their answers differ; first we need to calculate the actual miles they both ran.
Total = Distance covered in the morning + Distance covered in the evening
For Allison
Total Distance = [tex]2\frac{7}{8} + 3\frac{3}{8}[/tex]
Convert mixed fractions to improper fractions
Total Distance = [tex]\frac{23}{8} + \frac{27}{8}[/tex]
Take LCM and add
Total Distance = [tex]\frac{23 + 27}{8}[/tex]
Total Distance = [tex]\frac{50}{8}[/tex]
Total Distance = 6.25 miles
For Jennifer
Total Distance = [tex]3\frac{1}{10} + 3\frac{3}{10}[/tex]
Convert mixed fractions to improper fractions
Total Distance = [tex]\frac{31}{10} + \frac{33}{10}[/tex]
Take LCM and add
Total Distance = [tex]\frac{31 + 33}{10}[/tex]
Total Distance = [tex]\frac{64}{10}[/tex]
Convert to improper fraction
Total Distance = [tex]6\frac{4}{10} miles[/tex]
From the calculation above, the total distance ran by Allison is 6.25 miles and she said she ran about 6 miles; This means that she approximated the total distance she covered.
Also from the calculation above, the total distance ran by Jennifer is [tex]6\frac{4}{10} miles[/tex] and she said she ran [tex]6\frac{4}{10} miles[/tex]; This means that she gave the actual distance she ran.
Hence, their answers differ because of approximation
Why they are both correct?
As mentioned above, the difference in their answer is approximation.
Approximation is rightly allowed in measurements as long as one is giving the right approximated value.
For Allison; the approximation of 6.25 miles is 6 miles;
For Jennifer; she gave the actual distance she ran ([tex]6\frac{4}{10} miles[/tex])
Base on this, we can conclude that both are correct
help please i’ll give brainliest
Answer:
(x² + x)/2 = 10
x² + x = 20
x² + x - 20 = 0
(x + 5)(x - 4) = 0
x = -5, 4
Rewrite x - 2y = 8 using function notation.
A) x - 2f(x) = 8
B) f(x) = -x + 8
C) f(x) = 2x + 8
D) f(x) = 1 2 x - 4
Answer:
a) x-2f(x)=8
Step-by-step explanation:
Which is the product of 56 and 5/9
The answer would be 31.1111
Answer:
32.77
Step-by-step explanation:
Ryan bought 43 pounds of
apples for $0.75 per pound. How
much did he pay for the apples?
Answer:32.25$
Step-by-step explanation:
0.75x43=32.25
Answer:32.25
Step-by-step explanation:
For every pound there is $.75, so you just multiply them
what is the answer to 1/2x = 6
Answer:
x = 12
Step-by-step explanation:
1/2 X = 6
X = 12 x 6
Answer:12
Step-by-step explanation:
Use the figure to complete the statements,
Triangle 1 is the image of triangle 2 reflected over the
Triangle 2 is the image of triangle 3 reflected over the
Reflecting triangle 4 over the y-axis results in triangle
then, x-axis
then, 3
Triangle 1 is the image of triangle 2 reflected over the y-axis
Triangle 2 is the image of triangle 3 reflected over the x-axis.
Reflecting triangle 4 over the y-axis results in triangle 3.
What is the triangle?A triangle is a three-sided polygon It is one of the most fundamental geometric forms.
Triangle 1 is on the opposite side of triangle 2. When the triangles are bisected, they contact the y-axis.
Triangle 2 is to the left of triangle 3. Triangle 3 is to the right of triangle 2. When the triangles are bisected, they contact the x-axis.
You may build the same form by "mirroring" triangle 4 across the y-axis, then rotating it 90 degrees and placing it at the same distance from the y-axis.
Hence, triangle 1 is the y-axis reflected image of triangle 2, triangle 2 is the x-axis reflected image of triangle 3, and triangle 3 is formed by reflecting triangle 4 over the y-axis.
To learn more about the triangle refer to:
https://brainly.com/question/2773823
#SPJ2
The mean of the data set shown in the table is 57 what is the mean absolute deviation
Answer:
ITS 9!!!
Step-by-step explanation:
Answer:
The answer is 9
Step-by-step explanation:
Here is a reference
Harper knows he is 50 yards from his school. The map on his phone shows that the school is 3/4 inch from his current location. How far is Harper from home, if the map shows the distance as 3 inches?
Answer:200
Step-by-step explanation:
3÷3/4=4
4x50=200
34 inches represents 50 yards.
So, 1 inches could be represented by 50/34 = 25/17 yards.
Multiply 1 inches value of yards by 3 to find the length of 3 inches in yards.
25/17 = 75/17 = 4 7/17 yards.
Answer: 4.412
PLEASE ANSWER!
Bianca filled 2 same-sized jars with flavored popcorn as a gift. She wants to glue a piece of ribbon around the edge of each lid.
The radius of each jar lid is 4 centimeters. Approximately what is the total length of ribbon she will need for the two jar lids? (Use 3.14 for pi.)
Answer:
51 centimeters
Step-by-step explanation:
first you square the radius, and multiply by pi or 3.14 :)
zack is standing at the top of a lookout tower and spotsa a water fountain below. if the lookout tower is 75 feet tall and the angle of depression is 28 what is the horizontal distance between zack and the water fountain
The horizontal distance between Zack and the water fountain is approximately 141.1 feet.
To find the horizontal distance between Zack and the water fountain, we can use trigonometry.
The tangent function relates the angle of depression (\(\theta\)) to the opposite side (height of the tower, \(h\)), and the adjacent side (horizontal distance, \(d\)):
[tex]\[ \tan(\theta) = \frac{h}{d} \][/tex]
Given:
Height of the tower = 75 feet
Angle of depression = 28°
We rearrange the formula to solve for \(d\):
[tex]\[ d = \frac{h}{\tan(\theta)} \]\[ d = \frac{75}{\tan(28°)} \]Calculating \(\tan(28°)\), and then the distance \(d\):\[ \tan(28°) = 0.531 \]\[ d = \frac{75}{0.531} \]\[ d = 141.1 \][/tex]
So, the horizontal distance between Zack and the water fountain is approximately 141.1 feet.
2. A 12 V battery produces a current of 6 amps. What is the resistance
3. Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 250 anps?
Add Text Here!
4. What is the current produced by a potential dillerence of 120 volts through a resistance of 0.8 ohms?
r=v/i
120volts/.8 amps =.026 amps
5. What resistance would produce a current of 120 amps liom a 6 V ballery"?
Answer:
1) The resistance is 2 ohms.
2) The voltage is 4.95 V.
3) The current is 150 amps.
4) The resistance is 0.05 ohms.
Step-by-step explanation:
Using formula, [tex]\text{Resistance}=\frac{\text{Voltage}}{\text{Current}}[/tex]
1) A 12 V battery produces a current of 6 amps. What is the resistance ?
Voltage - 12 V and Current - 6 amps
[tex]\text{Resistance}=\frac{12}{6}[/tex]
[tex]\text{Resistance}=2[/tex]
The resistance is 2 ohms.
2) Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 250 amps?
Resistance - 0.0198 ohms and Current - 250 amps
[tex]0.0198=\frac{\text{Voltage}}{250}[/tex]
[tex]\text{Voltage}=0.0198\times 250[/tex]
[tex]\text{Voltage}=4.95[/tex]
The voltage is 4.95 V.
3) What is the current produced by a potential dillerence of 120 volts through a resistance of 0.8 ohms?
Resistance - 0.8 ohms and Voltage - 120 V
[tex]0.8=\frac{120}{\text{Current}}[/tex]
[tex]\text{Current}=\frac{120}{0.8}[/tex]
[tex]\text{Current}=150[/tex]
The current is 150 amps.
4) What resistance would produce a current of 120 amps liom a 6 V battery"?
Voltage - 6 V and Current - 120 amps
[tex]\text{Resistance}=\frac{6}{120}[/tex]
[tex]\text{Resistance}=0.05[/tex]
The resistance is 0.05 ohms.
150A is produced by a potential difference of 120 volts through a resistance of 0.8 ohms
Given the formula:
E = IR;
where E is the voltage in Volts, I is the current in Ampere and R is the resistance in Ohms.
a) E = 12V, I = 6A, hence:
12 = 6R
R = 2 Ohms
b) R = 0.0198 Ohm, I = 250A, hence:
E = IR = 0.0198 * 250 = 4.95 V
c) E = 120V, R = 0.8 Ohm
120 = 0.8I
I = 150A
d) I = 120A, E = 6V
E= IR
6 = 120R
R = 0.05 Ohm
Find out more at: https://brainly.com/question/22245473