Answer: x=19
Step-by-step explanation:
x=31-12
x=19
please answer!
The expression 8x − 4 represents the
cost of 8 pairs of socks Emma bought,
less the $4 coupon she had. Which
property is applied to the expression to
write the equivalent expression
4(2x − 1)? Explain.
Answer:
Step-by-step explanation:
distributive property
PLS HELP
RATIONAL EQUATION
Answer:
Decimal form
2.5,8
Mixed number form
2 1/2,8
Exact form
-5/2,8
Find the Domain and Range
Answer:
See explanation below
Step-by-step explanation:
Domain = [tex]-7\leq x\leq infinity[/tex]
Range = [tex]-1<y<infinity[/tex]
Domain refers to the set of x values of the graph, while range refers to the set of y values of the graph.
WILL MAKE BRAINLIEST
write the slope intercept form of the equation of each line
Answer:
3. y = -3x + 2
4. y = 3x - 5
Step-by-step explanation:
Slope-intercept form equation is given as y = mx + b.
3. First, using two points on the line, (0, 2) and (1, -1), find the slope (m).
Slope (m) = change in y / change in x = (-1 - 2)/(1 - 0) = -3/1
m = -3
Find the y-intercept (b):
The y-intercept (b) = 2 (this is where the line intercepts the y-axis)
b = 2
✅To write the equation, substitute m = -3 and b = 2 into y = mx + b
Thus:
y = -3x + 2
4. Using two points on the line, (2, 1) and (0, -5), find the slope (m).
Slope (m) = change in y / change in x = (-5 - 1)/(0 - 2) = -6/-2 = 3
m = 3
Find the y-intercept (b):
The y-intercept (b) = -5 (this is where the line intercepts the y-axis)
b = -5
✅To write the equation, substitute m = 3 and b = -5 into y = mx + b
Thus:
y = 3x + (-5)
y = 3x - 5
The volume of this rectangular prism is 240 cubic centimeters. What is the surface area?
wedding planner does some research and finds that approximately 3.5% of the people in the area where a large wedding is to be held are pollotarian. Treat the 300 guests expected at the wedding as a simple random sample from the local population of about 2,000,000. 18) Suppose the wedding planner assumes that 5% of the guests will be pollotarian so she orders 15 pollotarian meals. What is the approximate probability that more than 5% of the guests are pollotarian and therefore she will not have enough pollotarian meals
Answer:
0.0793 = 7.93% probability that more than 5% of the guests are pollotarian and therefore she will not have enough pollotarian meals
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score 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 p-value, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
3.5% of the people in the area where a large wedding is to be held are pollotarian.
This means that [tex]p = 0.035[/tex]
300 guests
This means that [tex]n = 300[/tex]
Mean and standard deviation:
[tex]\mu = p = 0.035[/tex]
[tex]s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.035*0.965}{300}} = 0.0106[/tex]
What is the approximate probability that more than 5% of the guests are pollotarian and therefore she will not have enough pollotarian meals?
This is 1 subtracted by the pvalue of Z when X = 0.05. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{0.05 - 0.035}{0.0106}[/tex]
[tex]Z = 1.41[/tex]
[tex]Z = 1.41[/tex] has a pvalue of 0.9207
1 - 0.9207 = 0.0793
0.0793 = 7.93% probability that more than 5% of the guests are pollotarian and therefore she will not have enough pollotarian meals
Answer:7.93%
Step-by-step explanation:
A cube with a surface area of 54 square centimeters is shown.
Twelve cubes like the one shown are combined to create a larger cube. What is the volume, in cubic centimeters of the new cube?
Answer:
54 cm
Step-by-step explanation:
they are the same i think
In simplest form, what fraction of the figure is shaded?
2/3
3/4
5/6
7/8
2. Which fraction is equivalent to 3/9? *
1/4
1/3
2/5
1/2
Three sixth-grade classes raised $25.50, $49.75,
and $37.25 for their classroom libraries. They agreed to
share the money raised equally. What is each class’s equal share?
Answer:
$37.50
Step-by-step explanation:
They are asking you to find the average and to do that you have to add all the numbers together in a given set then divide that total by the amount of numbers in that set to get your average.
Answer:
The answer is, 37.50
Step-by-step explanation:
Definition of spread out and share:In statistics, spread refers to a data set's variability, or how the data is spread out and differs from the mean.
The range, quartiles, deciles, and percentiles; the five-number summary; standard deviation, and variance are all examples of spread measures.
According, to the question:
Adding the all the value, 25.50, 49.75,and 37.25
= 25.50+49.75+37.25
= 112.5
To get your average, divide the sum by the number of numbers in the set.
= 112.5/3
= 37.50
The equal share of the class is 37.50.
To know more about spread out and share here, https://brainly.com/question/26955893
#SPJ2
What is the area of the right angle
Answer:
3.84 inches squared
Step-by-step explanation:
The area of a triangle is given by the formula:
Area = 1/2 * base * height
In this problem, our side lengths are:
Base = 2.4 inches
Height = 3.2 inches
So, our area can be found:
Area = 1/2 * 2.4 * 3.2 = 3.84 inches squared
Solve for x.
O 72.5
O 31.6
O 26
O 11.9
Triangle AA'B'C' is the image of AABC under a rotation about point P.
If y varies directly with n and inversely with m, and y = 3 when n = 6 and m = 10, then what is y when n = 12 and m = 3?
A.45
B.4/5
C.5
D.20
Answer: The answer is (c) 5
Step-by-step explanation: just know
Which key features of the graph of two parallel lines are the same and which as different?
Raja solved the inequality –3x – 5 ≤ 1. His work is shown below. Where did Raja make an error in his calculation? Explain.
Answer:
Raja made an error in d equality sign in d answer
Step-by-step explanation:
-3x< or =6
when dividing both sides by -(negative)3, the sign 4 d answer changes
x > or = -2
PLEASE HELP!!! ILL GIVE BRAINLIEST !! Which is the correct answer ?
Answer:
vertical angles
Step-by-step explanation:
bc they are across from eachother
What is the Area of the right angle
Answer:
141.96
Step-by-step explanation:
The area or solution for the area of a triangle is base* height divided by 2 so what I did was 31.2cm as the base and 9.1 as the height and I multiplied them together and then I divided by 2! Hope this helped!
what is 49, 423 rounded to the nearest ten thousand?
Answer:
50,000
Step-by-step explanation:
Find the slope of the line between each pair of points, write your answer as a improper fraction or a whole number:
(19,-12) and (5, 16)
Find the least common denominator of
7
and
X+4 x-4
What is the missing angle? Please only if you know!
From the choices provided, select all the questions that represent statistical questions,
A What was the temperature at 5:00p.m. today in Boston?
B How many pieces of fruit were used to make Shawn's smoothie today?
How many states are there?
D What types of food do students in your school bring for lunch each day?
E How many books did each student check out at the library last year?
Answer:
all exept c i think
This is what I need help with LIKE PLEADE
9514 1404 393
Answer:
y = 3x -8
Step-by-step explanation:
The equation of the given line is in slope-intercept form ...
y = mx + b
Matching that equation to this pattern, you see the slope is ...
m = 3
The parallel line will have the same slope.
If you rearrange the above equation, you find ...
b = y - mx
For the given point and slope, the new y-intercept will be ...
b = 4 - 3(4) = -8
The equation you want is ...
y = 3x -8
please answer asap! no scam links or scam comments or reported.
Answer:
B
Step-by-step explanation:
ADDITION Mrs Kelly, please help him ga + 3 31 + 3 = + 3 5 + 3 6 + 3 4+ + LESTER GREEN, NIGHT SCHOOL
Answer:
2+3=5
3+3=6
4+3=7
5+3=8
6+3=9
Step-by-step explanation:
GIVING BRAINLIEST PLS HELP
(x + 3)^2 – 3 = 0
lesser x =
greater x=
Solve using substitution. You MUST find both variables to be crowned brainiest
2x + 4y = 40
x - 6y = -36
If the sum of six consecutive odd integers is 480, what is the smallest of the six integers
Answer:
90
Step-by-step explanation:
Answer:
191
Step-by-step explanation:
6 8ths -2 8ths thanks please explain to
Answer:
0.5 or [tex]\frac{1}{2}[/tex]
Step-by-step explanation:
Part A
What are the possible outcomes of rolling a six-sided die?
Answer:
the possible outcomes are :
one (1)two (2)three (3)four (4)five (5)six (6)