There are 10 boys and 15 girls. What is the probability of picking double girls
WHO EVER ANSWERS FIRST GETS BRAINLIEST I REALLY NEED HELP!!!
simplify... (3/8)^-2(1/3•3/8)^3(1/3)^4
Answer:
i awnsered 4.2^(-3)*5.1^(2)*4.2^(4)*5.1^(3)
Step-by-step explanation:
14491.060542
5x23x2 use properties to find the sum or protuct
Answer:
230
Step-by-step explanation:
use the multiplication property, it doesn't matter what wa ugh you do it because multiplication is on both sides
I need help with this please
Answer:
Step-by-step explanation:
For (a), you will use that 2 points that are closest to lying on the line which are the points located at (1, 14) and (7, 7).
For (b), you will use those 2 points to find the slope of the line using the slope formula:
[tex]m=\frac{7-14}{7-1}=\frac{-7}{6}=-1.167[/tex]
For (c), you will use point-slope form to write the equation. Point-slope form is
[tex]y-y_1=m(x-x_1)[/tex] where x and y stay x and y in the equation and x1 and y1 are replaced with one of the coordinates. Let's use (7, 7). Keep in mind that IT DOESN'T MATTER WHICH POINT YOU PICK...YOU WILL GET THE SAME EQUATION WITH EITHER ONE! And this is because both those points lie on the same line...the line for which we will write the equation.
We have m = -1.167, y = 7 and x = 7:
y - 7 = -1.167(x - 7)
That's the point-slope form of the line, but rarely is it ever left in that form. I've only seen it left in point-slope form in calculus. Most of the time, from point-slope form, you are asked to put it into slope-intercept form, and here is no exception. Putting the equation into slope-intercept form is the same thing as solving it for y. So let's get y all by itself on one side of the equals sign and everything else over on the other side. We also of course need to distribute into the parenthesis:
y - 7 = -1.167x + 8.169 and
y = -1.167 + 8.169 + 7 so
y = -1.167 + 15.169
That's your equation in slope-intercept form, so you're done!
If x*y =
1, then 7 * 28 =
PLEASE HELP I CANT UNDERSTAND I NEED HELP
Answer:
Count houw many boxes the linegoes over
Step-by-step explanation:
Answer:
please mark my answer brainliest
Step-by-step explanation:
it can be solved by using Pythagoras theorem
Help with writing the set from an interval notation.
Answer:
(-oo, 1) U (1, 3) U (3, oo)
Step-by-step explanation:
We have a line with two arrowheads. The arrow heads show us that the numbers in the set continue forever in the negative direction past -5 and in the positive direction past 5. In this case, the set consists of all real numbers except 1 and 3 since they have open circles.
That means the set is from negative infinity to 1, from 1 to 3, from 3 to positive infinity, but leaving out 1 and 3.
Remember that a regular parentheses symbols, ( and ), do not include the number near them and are used for open circles.
Square brackets, [ and ], do include the number near them and are used for closed circles.
Also, infinity and negative infinity are not numbers, so we always use regular parentheses when dealing with infinity or negative infinity.
We need the union of three sets:
from negative infinity to 1, from 1 to 3, from 3 to positive infinity
Answer: (-oo, 1) U (1, 3) U (3, oo)
A map is made of a park. The scale from the park to the map is 36 mi to 6 cm. The length of great oaks trail is 4.5 cm on this map. The scale from the same park to a different map is 24 mi to 3 cm. The length of salamander trail is 3.5 cm on that map. Which is the longer trail, great oaks trail or salamander trail?
Answer:
Salamander trail is longer than great oaks trail.
Step-by-step explanation:
We have the data from two different maps of the same park.
In the first map the length of great oaks trail is 4.5 cm
The scale from the park to the map is 36 mi to 6 cm ⇒
We can find the real length of great oaks trail writing the following equivalence :
[tex]\frac{36mi}{6cm}=\frac{x}{4.5cm}[/tex]
Where x is the real length of great oaks trail ⇒
[tex]x=\frac{(36mi).(4.5cm)}{6cm}=27mi[/tex]
We find that the real length of great oaks trail is 27 mi
In the second map the length of salamander trail is 3.5 cm
The scale from the park in the second map is 24 mi to 3 cm.
Again we can find the real length of salamander trail writing the equivalence :
[tex]\frac{24mi}{3cm}=\frac{y}{3.5cm}[/tex]
Where y is the real length of salamander trail ⇒
[tex]y=\frac{(24mi).(3.5cm)}{3cm}=28mi[/tex]
We find that the real length of salamander trail is 28 mi.
Therefore salamander trail is longer than great oaks trail.
I need some help: A survey of 120 persons was conducted at TCC, and it was found that 97 persons carried a cell phone, 12 persons carried a tablet computer, and 9 carried both a cell phone and a tablet. How many people carried a cell phone or a tablet?
Answer:
100
Step-by-step explanation:
n(u)=120 total people in survey
n(c)=97 people carrying cell phone
n(t)=12 people carrying tablet
n(c∩t)=9 people carrying both tablet and cell phone
n(c∪t)=? people carrying cell phone or tablet
now,
n(c∪t)= n(c)+n(t) - n(c∩t)
= 97+12-9
=109-9
=100
there fore the number of people carrying cell phone or tablet = 100
You purchase 10,000 shares of a stock for $0.85 a share. One year later it is worth $0.95 a share. Find the profit if you sold at $0.95.
Answer:
Each share gained $0.10, which is an 11.76% increase (10/85).
The profit if the share is sold at $0.95/share, is $1000 and this can be determined by using the arithmetic operations.
Given :
You purchase 10,000 shares of a stock for $0.85 a share. After one year it is worth $0.95 a share.The following steps can be used in order to determine the profit if the share is sold at $0.95/share:
Step 1 - The arithmetic operations can be used in order to determine the profit if the share is sold at $0.95/share.
Step 2 - According to the given data, the cost of 10000 shares of a stock is $0.85 a share. So, let the total cost of 10000 shares be 'x'. So, the value of 'x' is:
[tex]x = 10000\times 0.85\\x = \$8500[/tex]
Step 3 - Now, after one year the shares price is $0.95 a share. So, let the cost of 10000 shares after one year be 'y'. So, the value of 'y' is:
[tex]y = 10000\times 0.95\\y = \$9500[/tex]
Step 4 - So, the profit if the share is sold at $0.95/share, is:
[tex]P = y-x[/tex]
[tex]P= 9500-8500[/tex]
[tex]P= \$1000[/tex]
Therefore, the profit if the share is sold at $0.95/share, is $1000.
For more information, refer to the link given below:
https://brainly.com/question/1494270
I can’t figure out how to find the average.
Answer:
The student needs a minimum score of 81 on the fourth test to ensure a grade of at least a C in the class.
Step-by-step explanation:
Remember what an average is. (Look at the hint at the bottom of the problem.)
To find the average of a set of numbers, add all the numbers and divide by the number of numbers.
For example, if in a class you took 8 tests, the average of the 8 tests is the sum of the 8 scores divided by 8.
In this case, the student took 3 tests and is taking one more, so in the end there will be 4 scores. The number of tests is 4.
We know 3 of the 4 scores. We don't know the fourth score because he has not taken the test yet, so we use a variable to represent the unknown score. Let's call the score of the fourth test x.
To find the average of the 4 scores, we add them and divide the sum by 4.
The three known scores are 63, 62, 74.
The unknown score is x.
Add all 4 scores: 63 + 62 + 74 + x.
Now we divide the sum of the 4 scores by 4 to find the average of the 4 scores.
[tex] \dfrac{63 + 62 + 74 + x}{4} [/tex]
The expression above is the average of the 4 scores. We want the average to be at least 70, so we need the average to be greater than or equal to 70.
We get this inequality.
[tex] \dfrac{63 + 62 + 74 + x}{4} \ge 70 [/tex]
Now we solve the inequality for x.
Add like terms in the numerator.
[tex] \dfrac{199 + x}{4} \ge 70 [/tex]
Multiply both sides by 4.
199 + x = 280
Subtract 199 from both sides.
x = 81
Answer: The student needs a minimum score of 81 on the fourth test to ensure a grade of at least a C in the class.
SHOW WORK !! PLS HELP
This is all i have............................
Solve. −3\5x=18
A. −30
B. −10 4\5
C. 10 4\5
D. 30
To draw graph of 4x + 5y = 19, Find y when x = 1
Question 5 You and a friend share a pizza cut into 8 equal slices. Suppose you each eat 3 slices. What
fraction of the pizza is left over?
Answer:
3/8
Step-by-step explanation:
Convert 4 meters to inches
Answer:
157.48
Step-by-step explanation:
1 metre = 39.37 inches(Approx.)
=> So, 4 metres= 4 * 39.37 = 157.48
Answer:
158in
Step-by-step explanation:
1m = 39.37
So,
4m = 4*39.37
= 157.48 = 157.5 = 158in
If DE = 5x, EF = x + 8, and DF = 20, what is EF? Simplify your answer and write it as a proper fraction, mixed number, or integer. Please if you could(or not) type the answer step by step.
Answer:
EF = 10
Step-by-step explanation:
DE + EF = DF
5x + x + 8 = 20
6x = 20 - 8
6x = 12
x = 12/6
x = 2
EF = x + 8 = 2 + 8 = 10
Help me ASAP plssssssssssssssssssssss
Answer:
the answer is d i think try it.
Can you help me out!
Answer:
Step-by-step explanation:
Cube root of 27/cube root of 125
=3/5
The 2nd one is right just did the test
Answer:
ok lol
Step-by-step explanation:
Answer:
Is it just me or after this did you just put the 2nd answer for every question after this and failing every test I have taken
Step-by-step explanation:
what is the greatest common factor for 45 and 75
HELP ME PLEASE IM CRYING SO BAD
Answer:
V'= ( 5,2 )
U'= ( 8,2 )
T'= ( 7,12 )
S'= ( 3,12 )
Answers:
S ' (3, 7)T ' (7, 7)U ' (8,2)V ' (5,2)Check out the diagram below
===================================================
Explanation:
When reflecting over horizontal lines like this, the x coordinate stays the same as the original point. Only the y coordinate changes.
To find what the y coordinate changes to, we need to measure the vertical distance from the point to the line. Point S has a y coordinate of y = -5 and the vertical distance to the line of reflection (y = 1) is |-5-1| = |-6| = 6 units. So we move 6 units up to go from point S to the line of reflection. We must move another 6 units to get to the location for S' where its reflected point would end up, which has y coordinate y = 7.
The same applies for the other points as well. Point T also goes up 6 units to get to y = 1, then it moves another 6 units to get to y = 7
Points V and U only move up 1 unit to get to the green dotted line of reflection. So they'll move only one additional unit to have their reflected points have y coordinates of y = 2.
The diagram hopefully visually summarizes everything discussed so far. The mirroring line cuts the distance from S to S' in half, same for T to T', and so on.
PLEASE HELP ME IM STUCK ON A,B,C PLEASE HELP
Answer:
1. Rotation
2. Reflection
3. Translation
Explanation:
1. Rotate figure A to the right it would match figure B
2. Imagine folding figure A down it would match figure B
3. Move figure A down and right and it would match figure B
If k(x)=5x-6, which expression is equivalent to (k+k)(4)
Answer: (k+k)(4)=28
Step-by-step explanation:
(k+k) (4) means the same as adding k(4) and k(4). Since we are given k(x), we can use it to solve. There are two ways to solve. One is to find k(4), and then add them. Another way is to do (k+k)(x), then plug in x=4. I will show both methods.
Method 1
k(4)=5(4)-6 [multiply]
k(4)=20-6 [subtract]
k(4)=14
(k+k)(4)=14+14 [add k(4) and k(4)]
(k+k)(4)=28
--------------------------------------------------------------------------------------------------------
Method 2
(k+k)(x)=5x-6+5x-6 [combine like terms]
(k+k)(x)=10x-12
(k+k)(4)=10(4)-12 [plug in x=4, multiply]
(k+k)(4)=40-12 [subtract]
(k+k)(4)=28
--------------------------------------------------------------------------------------------------------
Now, we know that (k+k)(4)=28. We confirmed this with both methods.
Find distance AB.
A(3, 2) and B(9,7)
Answer:
I hope you understood it.
30x^3y – 45x²y2 + 135x y3
To calculate 4 % tax on $63.78, multiply 4.2 times 63.78.
T
F
It’s true
Answer
False
Step-by-step explanation:
Cause i got it right on edge :)
Answer:
False
Step-by-step explanation:
you multiply .042 to 63.79 because 4.2 is the percentage.
A house shaped like an octagon has a large porch, as shown. What is the area of the house
and the porch?
5 feet
5 feet
5 feet
5 feet
House
10 feet
15 feet
Porch
30 feet
Answer: 875 square feet
Step-by-step explanation: none atm
What is the nth term of this number sequence 25, 20, 15, 10, 5
Please answer it
Answer:
[tex]a_{n}[/tex] = 30 - 5n
Step-by-step explanation:
There is a common difference between consecutive terms, that is
20 - 25 = 15 - 20 = 15 - 20 = 10 - 15 = 5 - 10 = - 5
This indicates the sequence is arithmetic with n th term
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 25 and d = - 5, thus
[tex]a_{n}[/tex] = 25 - 5(n - 1)
= 25 - 5n + 5
= 30 - 5n
The output from a statistical software package indicates that the mean and standard deviation of a data set consisting of measurements are $ and $, respectively. a. What are the units of measurement of the variable of interest? A. Units B. Dollars Your answer is correct.C. Single measurements
Answer: dollars
Step-by-step explanation:
Mean means average and it's calculated by adding the numbers given and then dividing the sum by the amount of numbers that were given.
The standard deviation shows the amount of dispersion or amount of variation of a given set of values. From the question, the only unit of measurement we can see is the dollar sign($).