Answer:
7x+12
Step-by-step explanation:
You do 10x-3x since they both have the x variable they can be combined to make 7x and the 12 is left alone.
Answer:
7x + 12
Step-by-step explanation:
irs gonna go like
10x -3x =7x
and the answer is
7x+12
The ratio of boys to girls in Mr. Williamson's class is 3 to 4. There are 15 boys in the class. How many girls are in the class?
Group of answer choices
4
12
16
20
Answer:
20
Step-by-step explanation:
What is the 6th term in the following sequence : 6, 12, 24, 48, 96
The total bill was $45 they want to leave a 20% tip how much is the tip
Lol im SimpForKirishima my account got baneed comeback kait
Answer:
ion know who that is but heyyyy and they did u dirty
Step-by-step explanation:
Answer:
RIP, you will be rested in peace
Step-by-step explanation:
Happy to help with any math problem
7th grader looking to help others <3
Watch AnaLovesYou on Twitch, tell her Sara sent you! :3
What is the Greatest Common Factor (GCF) of 12 and 32? *
Answer: wow here's answer its 4
Step-by-step explanation:
Answer:
4
Do you need an explanation?
Residences of U.S. Citizens According to the U.S. Census, 67.5% of the U.S. population were born in their state of residence. In a random sample of 203 Americans, what is the probability that fewer than 126 were born in their state of residence? Round the final answer to at least four decimal places and intermediate -value calculations to two decimal places.
P ( X < 126)=?
Answer:
P(X < 126) = 0.0418
Step-by-step explanation:
To solve this question, we use the binomial approximation to the normal to solve this question.
Binomial probability distribution
Probability of exactly x sucesses on n repeated trials, with p probability.
Can be approximated to a normal distribution, using the expected value and the standard deviation.
The expected value of the binomial distribution is:
[tex]E(X) = np[/tex]
The standard deviation of the binomial distribution is:
[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]
Normal probability distribution
Problems of normally distributed distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
When we are approximating a binomial distribution to a normal one, we have that [tex]\mu = E(X)[/tex], [tex]\sigma = \sqrt{V(X)}[/tex].
Sample of 203, 67.5% of the U.S. population were born in their state of residence.
This means that [tex]n = 203, p = 0.675[/tex]
So, for the approximation:
[tex]\mu = E(X) = np = 203*0.675 = 137.025[/tex]
[tex]\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{203*0.675*0.325} = 6.67[/tex]
What is the probability that fewer than 126 were born in their state of residence?
Using continuity correction, this is P(X < 126 - 0.5) = P(X < 125.5), which is the pvalue of Z when X = 125.5. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{125.5 - 137.025}{6.67}[/tex]
[tex]Z = -1.73[/tex]
[tex]Z = -1.73[/tex] has a pvalue of 0.0418
So
P(X < 126) = 0.0418
A weather balloon is 529 meters above the ground. Two weather stations, A and B, monitor the balloon’s progress. A weather balloon is 529 meters above the ground. Weather stations A and B are on the ground to form a triangle. A horizontal line is drawn at the top of the triangle to form angle v on the left and angle w on the right. The angle formed with A is x and the angle formed with B is y. A vertical line is drawn from the weather balloon to the ground to form a right angle and split the distance between A and B into 2 parts. The distance from A to the vertical line is 229 meters, and the distance between the vertical line and point B is 347 meters. Compare the measures of the different angles of elevation and depression that are labeled in the diagram. Which statements are true? Check all that apply.
Answer:
A, C, D
Step-by-step explanation:
Answer:
A C D
Step-by-step explanation:
Mary buys a bag of 13 oranges for $2.99
Find the unit price in dollars per orange.
If necessary, round your answer to the nearest cent.
An equation is shown below.
4j=-22
Which number line best represents the solution to the equation?
Answer:
B second one
Step-by-step explanation:
5.5
Answer:last one
Step-by-step explanation:
4j=-22 divide
4. 4
J=-5.5
Helppppppp I will give brainliest Which equation makes a straight line?
Oy= -5x
Oy=2x-1
Oy=3* + 4
y = 4x - 5x?
Answer:
a) The equation of the straight line passing through the origin and having slope m=-5
y = -5x
b) The equation of the straight line in slope-intercept form
y = 2 x -1
Step-by-step explanation:
Step(i):-
We know that the equation of the straight line passing through the point (x₁, y₁) and having slope 'm'
y - y₁ = m(x-x₁)
a)
Given that the equation of the straight line passing through the origin and having slope m=-5
y = -5x
Step(ii):-
b)
Given that the equation of the straight line in slope-intercept form
y = m x +c
y = 2 x -1
PLEASE HELP NEED BY 11:50 OF JAN 25 2021
Answer:
H
Step-by-step explanation:
y²=x² domain range ?
and how to draw graph
Answer:
Domain= All real no
Range= All real no
For graph:
Assign values to xyou will get corresponding value of yGraph will be straight line.Step-by-step explanation:
Domain= All real no
Range= All real no
For graph:
Assign values to xyou will get corresponding value of yGraph will be straight line.Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Consider the function,
f(1) = 21 - 6
Match each transformation of Rx) with its description.
g() = 21 – 10
9(0) = 21 - 14
g(1) = 81 - 4
g(t) = 21 - 2
g(1) = 81 - 24
g(I) = 85 - 6
shifts 1x) 4 units right
stretches x) by a factor
of 4 away from the x-axis
compresses (x) by a factor
of 4 toward the y-axis
shifts x 4 units down
Answer:
Shift 4 units down: [tex]g(x) = 2x - 10[/tex]
Stretching f(x) by 4 : [tex]g(x) =8x - 24[/tex]
Shift 4 units left: [tex]g(x) = 2x - 14[/tex]
Compress by 1/4 units : [tex]g(x) = 8x - 6[/tex]
Step-by-step explanation:
Given
[tex]f(x) = 2x - 6[/tex]
Required
Match the transformations (See attachment)
Shift 4 units down
Shifting down a function is represented as:
[tex]g(x) = f(x) - b[/tex]
In this case:
[tex]b = 4[/tex]
Substitute expression for f(x) and 4 for b in [tex]g(x) = f(x) - b[/tex]
[tex]g(x) = 2x - 6 - 4[/tex]
[tex]g(x) = 2x - 10[/tex]
Stretching f(x) by 4
Stretching a function by some units is represented as:
[tex]g(x) =b.f(x)[/tex]
In this case:
[tex]b = 4[/tex]
Substitute expression for f(x) and 4 for b in [tex]g(x) =b.f(x)[/tex]
[tex]g(x) =4 * (2x - 6)[/tex]
[tex]g(x) =8x - 24[/tex]
Shift 4 units left
Shifting a function to the left is represented as:
[tex]g(x) = f(x - b)[/tex]
In this case:
[tex]b = 4[/tex]
Substitute expression for f(x) and 4 for b in [tex]g(x) = f(x - b)[/tex]
[tex]g(x) = f(x-4)[/tex]
Calculating f(x - 4)
[tex]f(x) = 2x - 6[/tex]
[tex]f(x - 4) = 2(x - 4) - 6[/tex]
[tex]f(x - 4) = 2x - 8 - 6[/tex]
[tex]f(x - 4) = 2x - 14[/tex]
Hence:
[tex]g(x) = 2x - 14[/tex]
Compress by 1/4 units
This means that the function is stretched by [tex]1/\frac{1}{4}[/tex]
Compressing a function is represented as:
[tex]g(x) =f(bx)[/tex]
In this case:
[tex]b = 1/\frac{1}{4}[/tex]
[tex]b = 1 * \frac{4}{1}[/tex]
[tex]b = 4[/tex]
Substitute expression for f(x) and 4 for b in [tex]g(x) =f(bx)[/tex]
[tex]g(x) =f(4x)[/tex]
Calculating f(4x)
[tex]f(4x) = 2(4x) - 6[/tex]
[tex]f(4x) = 8x - 6[/tex]
Hence:
[tex]g(x) = 8x - 6[/tex]
Fill in the circle with the correct inequality statement. - 1.5O - 1.3 AIV
Answer:
ohh hiii and I dob5 understand that -
There are 24 pieces of fruit in a bowl and 6 of them are oranges. What percentage of the pieces of fruit in the bowl are oranges?
A. 15%
B. 20%
C. 25%
D. 50%
Answer:
d
Step-by-step explanation:
Answer:
C 25%
Step-by-step explanation:
The reason why its C because 24 divided by 6 is 4 and then 6 times 4 is 24 so its C
PLEASE HELP HELP HELP HELP!!! I JUST NEED TO KNOW WHAT TO Pick and showing my work.
Which is the correct answer? Show how you know.
the answer is C... ......
[tex]6 \sqrt{2} [/tex]
Answer:
(c) 6 x sq rt 2
Step-by-step explanation:
sin 45=x/12
sin 45=.7071
.7071X12=x
x=8.489=6(sq rt 2)
Proof b y Pythagorean Theorem:
AC^2 + BC^2=12^2
AC=8.489 and BC=8.489
AC^2=72 , BC^2=72, 12^2=144
72+72=144
Evaluate the following expression when x = 3 and y = 4:
Fraction with x squared plus y cubed in the numerator and 2 plus x in the denominator.
3.6
8.6
14.6
21.6
Answer:
14.6
Step-by-step explanation:
i took the test
A company has been forced to reduce its number of employees. Today the company has 33% fewer employees than it did a year ago. If there are currently 268 employees, how many employees did the company have a year ago?
Solution :
The number of employees currently in a company = 268
Percentage of employees less than a year ago = 33%
Let he number of people a year ago = x
∴ At present the number of employees = [tex]$x - x \times \frac{33}{100}$[/tex]
⇒ 268 = x (1 - 0.33)
⇒ 268 = 1x -0.33 x
⇒ 268 = 0.67 x
⇒ x = 400
Number of employees in a year is = 400
5t-shirts and a hat costs £83.00,2 t-shirts and a hat costs £38.00.a)how much does a t-shirt cost?
Answer:
$9 per t-shirt
Step-by-step explanation:
First you subtract the cost of the hats from the TOTAL cost of the the T-shrits and the hat.
$83.00-$38.00= $45
Now that you just have the shirts WITHOUT the hat, which is why we subtracted the $38.00, we have to devide. You devide 45 by the number of shirts.
45/5=9
$9 per T-shirt.
Hope this helps
convert 2.5 tons into pounds
Answer:
5000 pounds
Step-by-step explanation:
Answer:
that would be 5000 pounds
Is it linear or exponential
Answer: exponential
Step-by-step explanation: the x in the equation is an exponent
Answer:
Exponential.
Step-by-step explanation:
The function shown is h(x) = 8(1/3)^x.
Essentially this is showing powers of 1/3 multiplied by 8.
This would not make a line, as it involves an exponent.
As a result, this function is exponential, because of the exponent involved.
Use the graph to write the explicit rule of the arithmetic sequence.
A)
ƒ(n) = 3 + 1(n – 1)
B)
ƒ(n) = 7 + 3(n – 1)
C)
ƒ(n) = 7 + (–2)(n – 1)
D)
ƒ(n) = 2 + (–7)(n – 1)
Answer:
[tex]f_n=7+\left(-2\right)\left(n-1\right)[/tex]
Therefore, option C is true.
Step-by-step explanation:
From the graph, we get the sequence
7, 5, 3, 1, ...
Here,
a₁ = 7 is the first element.
An arithmetic sequence has a constant difference 'd' and is defined by
[tex]f_n=a_1+\left(n-1\right)d[/tex]
computing the differences of all the adjacent terms
[tex]5-7=-2,\:\quad \:3-5=-2,\:\quad \:1-3=-2[/tex]
The difference between all the adjacent terms is the same and equal to
[tex]d=-2[/tex]
substituting a₁ = 7 and d = -2 in the nth term of the sequence
[tex]f_n=a_1+\left(n-1\right)d[/tex]
[tex]f_n=7+\left(-2\right)\left(n-1\right)[/tex]
Therefore, option C is true.
Answer:
C
Step-by-step explanation:
Find -x + 10 less than 0
Cliff has some berries in his basket. He picks 15 more berries. Then he gives
away 28 berries to his friends Cliff now has 12 berries. How many berries did
cliff in his basket to start?
Answer:
15 berries
Step-by-step explanation:
The number of berries that cliff has in his basket to start will be 65 berries.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
Cliff has some berries in his basket. He picks 15 more berries. Then he gives away 28 berries to his friends Cliff now has 12 berries.
The number of the berries that cliff has in his basket to start will be given as,
⇒ 15 + 28 + 12
⇒ 15 + 40
⇒ 65
The number of berries that cliff has in his basket to start will be 65 berries.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ5
Order the intergers from least to greatest!
Answer:
The answer is C. -3,-2,-1, 1, 3.
Find the sum of 5x + 20 and the opposite of 20. Write an equivalent expression in standard form. Do not include any spaces in your answer.
Answer:
5x
Step-by-step explanation:
add -20 to 20 =0
then your have 5x=0
the equation 5x+20-20=5x
Which expression is equivalent to 10 + (-2)?
Answer:
10 - 2
Step-by-step explanation:
10 + (-2) = 8
10 - 2 = 8
Please help ;-; I don't understand much of this-
Answer:
here you go please mark brainliest.
Step-by-step explanation:
which one do u need help with there are two
hmmmmmmmmmmmmmmmmmmmmm
Factor the expression.
x^2 - 6x + 8
Answer:
(x-4), (x-2)
i think this is what you're looking for
Answer:
its actually (x+2) , (x+4)
Step-by-step explanation:
