22-3(4)
How do I answer this question?
Answers
Answer:
76
Step-by-step explanation:
22-3=19
19x4=76
22-3= 19
19 * 4= 76
I hope this helps! It’s my first time giving an answer
Related Questions
The goal of an experimental research study is which of the following? A. To make an observation to determine the correlation between two variables B. To make an observation without manipulating any variables C. To demonstrate the existence of a cause-and-effect relationship between two variables D. To make an observation to determine the relationship among several variables
Answers
Option c is correct- To demonstrate the existence of a cause-and-effect relationship between two variables.
The goal of experimental research study is different from the goal of non experimental research. The experiment attempts to show the change in one variable due to change in another variable.
The goal of the experimental method is to provide more definitive conclusions about the causal relationships among the variables in a research hypothesis than what is available from correlational research.
To accomplish this goal the an experiment control extraneous variables and manipulate independent variables. The experiment is done by changing one variable by manipulating which causes change in another variable. The researcher must control the research situation.
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Please help see the image below
Answers
Answer:
12 pi or 37.7units
Step-by-step explanation:
the perimeter is 4 semicircles which is 2 full circles. the formula for circumference of a circle (perimeter) is diameter times pi. the diameter given is 6 so you do 6 pi times 2 full circles which is 12 pi or 37.7 units
Answer:
12pi is ur correct answer
❗❗100 POINTS FOR CORRECT ANSWER AND EXPLANATION❗❗~math question~
thanks)
Answers
Answer:
k = 110
Step-by-step explanation:
You want the integer multiple of pi that is the area of 300° of a donut with inner radius 8 cm and outer radius of 14 cm.
Area of a circleThe area of a circle is given by the formula ...
A = πr²
Then the area of the outer circle is ...
A = π(14 cm)² = 196π cm²
The area of the inner circle is ...
A = π(8 cm)² = 64π cm²
Donut areaThe area of the whole donut is the difference of these areas:
whole donut area = (196 -64)π cm² = 132π cm²
Shaded areaThe shaded area of the figure represents 300° of the 360° full donut. The area is proportional to the central angle, so the shaded area is ...
shaded area = (300°/360°)×whole donut area
shaded area = 5/6 × 132π cm² = 110π cm²
Comparing this to the expression kπ cm², we see that ...
k = 110
Estimate the sum of 379+409=
Answers
Answer:
Round both numbers to 1 significant figure.
400+400=800
800 is the answer.
This is NOT multiple choice
40 points
Solve the equation 15e^4x = 12 for x
Show your work please
A) identify the exact solution
B) approximate the solution to the nearest thousandth.
Answers
Answer:
Answer to Part A= 1/5e
Step-by-step explanation:
15e×4x=12
Multiply 15 and 4 to get 60.
60ex=12
Divide both sides by 60e.
60e
60ex =
60e
12
Dividing by 60e undoes the multiplication by 60e.
x=
60e
12
Divide 12 by 60e.
x=
5e
1
Please help and answer ASAP please will mark Brainlest
What is the value for x?
Enter your answer in the box.
x =
Answers
Answer:
x=45
Step-by-step explanation:
i hope its right good luck :)
i think im wrong
For the positive integer $n$, let $\langle n\rangle$ denote the sum of all the positive divisors of $n$ with the exception of $n$ itself. For example, $\langle 4\rangle=1+2=3$ and $\langle 12 \rangle =1+2+3+4+6=16$. What is $\langle\langle\langle 6\rangle\rangle\rangle?
A. 6B. 12C. 24D. 32E. 36
Answers
For the positive integer n, \(\langle n\rangle\) denote the sum of all the positive divisors of n with the exception of n itself is an option (A). 6.
We start by calculating the value of \(\langle 6 \rangle\), which is the sum of the positive divisors of 6 excluding 6 itself.
Since the divisors of 6 are 1, 2, 3, and 6, we have \(\langle 6 \rangle = 1 + 2 + 3 = 6\).
Next, we need to calculate \(\langle\langle 6 \rangle\rangle\), which is the sum of the positive divisors of 6 excluding 6 itself, and the positive divisors of 6 excluding 6 itself and \(\langle 6 \rangle\).
The divisors of 6 excluding 6 itself are 1, 2, and 3, so \(\langle\langle 6 \rangle\rangle\) is the sum of the positive divisors of 1, 2, and 3.
The divisors of 1 are just 1, the divisors of 2 are 1 and 2, and the divisors of 3 are 1 and 3.
Thus, \(\langle\langle 6 \rangle\rangle = 1 + 2 + 1 + 3 = 7\).
Finally, we need to calculate \(\langle\langle\langle 6\rangle\rangle\rangle\),
which is the sum of the positive divisors of 1, 2, 3, and 7.
The divisors of 1 are just 1, the divisors of 2 are 1 and 2, the divisors of 3 are 1 and 3, and the only divisor of 7 is 1.
Thus, \(\langle\langle\langle 6\rangle\rangle\rangle = 1 + 2 + 1 + 3 + 1 = \boxed{8}\).
For the positive integer n, \(\langle n\rangle\) denote the sum of all the positive divisors of n with the exception of n itself is 6
Hence option A is correct choice.
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sam rented a truck for one day there was a base fee of 18.99 and there was an additional fee of 79 cents for each mile driven. Sam had to pay 213.33 when he returned the truck how many miles did he drive the truck.
Answers
Sam drove approximately 246 miles.
Let's start by subtracting the base fee from the total amount Sam paid to find the additional fee he incurred for the miles driven:
213.33 - 18.99 = 194.34
We know that the additional fee is 79 cents per mile, so we can set up an equation to find the number of miles Sam drove:
194.34 = 0.79x
where x is the number of miles driven.
To solve for x, we can divide both sides of the equation by 0.79:
x = 194.34 / 0.79 ≈ 246
Therefore, Sam drove approximately 246 miles.
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a chord of a circle is the same length as the radius of the circle how far is the chord from the center of the circle
Answers
The distance from the chord to the center of the circle is equal to the length of one of these line segments, which is equal to the radius of the circle.
If the length of the chord of a circle is equal to the length of the radius of the circle, then the chord is exactly halfway between the center of the circle and the circumference. In other words, the distance from the chord to the center of the circle is equal to the radius of the circle. This is because a line that passes through the center of the circle and is perpendicular to the chord bisects the chord, creating two equal line segments, each of which has a length equal to the radius. Therefore, the distance from the chord to the center of the circle is equal to the length of one of these line segments, which is equal to the radius of the circle.
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We want to estimate the population mean within 5, with a 99% level of confidence. The population standard deviation is estimated to be 15. How large a sample is required? (Round up your answer to the next whole number.)
Answers
Answer: 60
Step-by-step explanation:
Formula to calculate sample size (n):
\(n=(\dfrac{\sigma\times z^*}{E})^2\)
, where \(\sigma\) = population standard deviation, E Margin of error , z* = critical value for the confidence interval.
As per given , we have
E =5
\(\sigma=15\)
Critical value for 99% confidence = 2.576
Then,
\(n=(\dfrac{15\times2.576}{5})^2\\\\\Rightarrow\ n=59.721984\approx60\)
So, Required sample size = 60 .
What is the meaning of conditionally promoted in school
Answers
In A container, there are red, blue and green balls. 3/11 of ball s are red There are 35 more blue balls than red balls. The remaining 90 balls are green. How many more blue balls than green balls are there? of the balls are red.
Answers
It is mentioned that there are 35 more blue balls than red balls. Therefore, the number of blue balls is 30 + 35 = 65.
The remaining balls are green, so the number of green balls is 110 - (30 + 65) = 15.
To find out how many more blue balls there are than green balls, we subtract the number of green balls from the number of blue balls: 65 - 15 = 50.
Therefore, there are 50 more blue balls than green balls.
Here is a system of equations {y=-x+2{y=-2x+4Graph the system then write its solution
Answers
ANSWER and EXPLANATION
We want to graph the system of equations and solve them.
To graph a linear equation, we can use two points and then join them.
The two points to be used will be the x and y-intercepts.
To find the x-intercept by finding the value of x when y is 0.
To find the y-intercept by finding the value of y when x is 0.
For the first equation:
\(y=-x+2\)The x-intercept is:
\(\begin{gathered} 0=-x+2 \\ \Rightarrow x=2 \end{gathered}\)The x-intercept is (2, 0)
The y-intercept is:
\(\begin{gathered} y=0+2 \\ y=2 \end{gathered}\)The y-intercept is (0, 2)
For the second equation:
\(y=-2x+4\)The x-intercept is:
\(\begin{gathered} 0=-2x+4 \\ 2x=4 \\ x=\frac{4}{2} \\ x=2 \end{gathered}\)The x-intercept is (2, 0)
The y-intercept is:
\(\begin{gathered} y=0+4 \\ y=4 \end{gathered}\)The y-intercept is (0, 4)
Let us plot the graph of the equations:
The red line represents y = -x + 2
The blue line represents y = -2x + 4
The solution to a system of equations is the point where the lines intersect one another.
Therefore, the solution to the system equations is:
\((2,0)\)
Given the geometric sequence an with the following information, find a7.
Answers
To find the value of Az in the geometric sequence, we can use the given information. The geometric sequence is represented as follows: A3, 60, 160, 06 = 9.
From this, we can see that the third term (A3) is 60 and the common ratio (r) is 160/60.
To find Az, we need to determine the value of the nth term in the sequence. In this case, we are looking for the term with the value 9.
We can use the formula for the nth term of a geometric sequence:
An = A1 * r^(n-1)
In this formula, An represents the nth term, A1 is the first term, r is the common ratio, and n is the position of the term we are trying to find.
Since we know A3 and the common ratio, we can substitute these values into the formula:
60 =\(A1 * (160/60)^(3-1)\)
Simplifying this equation, we have:
\(60 = A1 * (8/3)^260 = A1 * (64/9)\)
To isolate A1, we divide both sides of the equation by (64/9):
A1 = 60 / (64/9)
Simplifying further, we have:
A1 = 540/64 = 67.5/8.
Therefore, the first term of the sequence (A1) is 67.5/8.
Now that we know A1 and the common ratio, we can find Az using the formula:
Az = A1 * r^(z-1)
Substituting the values, we have:
Az =\((67.5/8) * (160/60)^(z-1)\)
However, we now have the formula to calculate it once we know the position z in the sequence.
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Use the given graph of f to find a number such that if 0 < |x − 3| < then |f(x) − 2| < 0.5.
Answers
Answer:
x=3, = -2
Step-by-step explanation:
What are the new coordinates if the figure were rotated 90 degrees counterclockwise
Answers
Answer:
third option
Step-by-step explanation:
under a counterclockwise rotation of 90° about the origin
a point (x, y ) → (y, - x )
Then
A (- 1, - 2 ) → (- 2, - (- 1) ) → (- 2, 1 )
B (2, - 2 ) → (- 2, - 2 )
C (1, - 4 ) → (- 4, - 1 )
The new coordinates are (d) A = (2, -1) B = (2, 2) and C = (4, 1)
How to determine the new coordinates rotating by 90 degrees counterclockwiseFrom the question, we have the following parameters that can be used in our computation:
The figure,
Where, we have
A = (-1, -2)
B = (2, -2)
C = (1, -4)
The rule of 90 degrees counterclockwise is
(x, y) = (-y, x)
Using the above as a guide, we have the following:
A = (2, -1)
B = (2, 2)
C = (4, 1)
Hence, the new coordinates are (d) A = (2, -1) B = (2, 2) and C = (4, 1)
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A woman can bicycle 25 miles in the same time as it takes her to walk 5 miles she can ride 10 mph faster than she can walk how fast can she walk?
Answers
Answer:
The woman walks at 2.5 mph.
Bonus: she rides her bicycle at 12.5 mph.
Step-by-step explanation:
We're told that she can bicycle 25 miles in the time takes her to walk 5. That means that on a bicycle, she moves 25 ÷ 5, or 5 times faster on a bicycle than when she runs.
We're also told that she can ride at 10 mph faster than she can walk.
That gives us two relationships to describe. If we call her speed on the bicycle "b", and her speed on foot "w", then we know:
b = 5w
and
b = w + 10
Since both of those describe b, we can simply equate them. Stating the obvious:
b = b
therefore:
5w = w + 10
We can then simplify:
5w = w + 10
4w = 10
w = 2.5
So she walks at 2.5 miles per hour.
We can test that answer too. Let's compare to the first statement, her bicycling 25 miles in the time it takes to walk five miles.
Walking 2.5 miles per hour means she'd take two hours to walk five miles.
We also know that she can ride 10mph faster, so she rides at 12.5 mph. two times that is 25, so she would indeed cover 25 miles on her bicycle in the same time that she walks five.
I need help Area of a circle
Answers
Answer:
The formula
Step-by-step explanation:
just do pi times the circle's radius squared.
(pi x r squared)
Which of the following is considered a
liability?
A Checking account
B Automobile (current value)
C Student loans
D Investments
Answers
Answer:
C
Step-by-step explanation:
Students loan as it's money owed to a supplier.
A square has sides that measure 8x + 5 inches. A rectangle has two sides that measure 4x - 5 inches and two sides that measure 12x + 15 inches.
For what value of x will the perimeters of the square and rectangle be the same?
Answers
Answer:
The perimeter of the square is 32x + 20 inches, and the perimeter of the rectangle is (4x - 5) + (4x - 5) + (12x + 15) + (12x + 15) = 32x + 20 inches.
So, to find the value of x that makes the perimeters the same, we set 32x + 20 = 32x + 20 and solve for x.
x = 0
Step-by-step explanation:
Help pls!!! ASAP!!! Thank you
Answers
Please help I’ll mark u
Answers
Answer:
What?
Step-by-step explanation:
Is there an attachment?
Answer:
if the slope is -3 then the answer is B
Step-by-step explanation:
Answer please thanks you
Answers
Step-by-step explanation:
the volume of a cylinder is in general
base area × height = pi×r²×height
with r being the radius (= half of the diameter) of the circle.
so, now we only need a calculator and type the numbers in.
4.
pi×(6/2)²×5 = pi×3²×5 =pi×9×5 = 45pi = 141.3716694... m³
5.
pi×7²×15 = pi×49×15 = 735pi = 2,309.0706... ft³
6.
pi×(8/2)²×8 = pi×4²×8 = pi×16×8 = 128pi =
= 402.1238597... mm³
7.
pi×(10/2)²×11 = pi×5²×11 = pi×25×11 = 275pi =
= 863.9379797... cm³
8.
pi×7²×13 = pi×49×13 = 637pi = 2,001.19452... in³
9.
pi×3²×7 = pi×9×7 = 63pi = 197.9203372... m³
10.
the "width" of 6 cm just means the diameter is 6 cm.
so,
pi×(6/2)²×15 = pi×3²×15 = pi×9×15 = 135pi =
= 424.1150082... cm³
Violet has an Internet business selling paint sets. After an initial website fee each week, she makes a profit of $0.75 on each set she sells. If she sells 8 sets and she makes $2.25; write an equation in point-slope form representing her weekly possible earnings.answer choicesy - 2.25 = 0.75(x - 8)y - 8 = 0.75(x - 2.25)y - 8 = 2.25(x - 0.75)y - 0.75 = 2.25(x - 8)
Answers
The answer to this Question based on website is
What is website?
It is form of storage of information in well ordered way
Solution:
As we know she earns 0.75$ per set she sells in her website
and she sold 8 sets
hence total money he could earned = 8*0.75 = $6
but she made only = 2.25$ because remaining money she paid as website fee which was 6 - 2.25 = 3.75$
hence each week she has to pay 3.75$ as website fee so we can calculate his profit equation as follows
profit = 0.75x - n/7(3.75)
where x is no of sets sold on website and n is number of weeks in which these sets were sold
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The Phillips family had three cats. They needed to split 20 ounces of cat food among 3 cats how much cat food would each cat get?
Answers
Answer:
Below.
Step-by-step explanation:
20 divided by 3.
Because there are 3 cats and 20 ounces of cat food so.
20/3= 6.666667 Ounces of food for each cat.
A particular fruit's weights are normally distributed, with a mean of 498 grams and a standard deviation of 32 grams.If you pick 13 fruits at random, then 11% of the time, their mean weight will be greater than how many grams?Give your answer to the nearest gram.
Answers
We are given the following information
Mean = 498 grams
Standard deviation = 32 grams
Sample size = 13
We are asked to find the weight for which 11% of the fruits are heavier.
11% corresponds to 100% - 11% = 89% percentile of the normal distribution.
Recall that the z-score for a normal distribution is given by
\(z=\frac{x-\mu}{\frac{\sigma}{\sqrt[]{n}}}\)Where x is the value that we need to find out, μ is the mean, σ is the standard deviation, n is the sample size.
z is the value of the z-score corresponding to the 89th percentile.
From the z-table, the value of the z-score corresponding to the p = 0.89 is 1.23
Let us substitute all these values into the above formula and solve for x.
\(\begin{gathered} 1.23=\frac{x-498}{\frac{32}{\sqrt[]{13}}} \\ 1.23\cdot\frac{32}{\sqrt[]{13}}=x-498 \\ 1.23\cdot\frac{32}{\sqrt[]{13}}+498=x \\ 10.92+498=x \\ 509=x \\ x=509\; \text{grams} \end{gathered}\)Therefore, the required value is 509 grams.
1. Analyze When a fraction with a numerator of 30 and a denominator of 8
is converted to a mixed number and reduced, what is the result?
Answers
So, the answer is 3 and 3/4
I need help solving this math problem step by step please.
-7+4(-7+4)
Answers
Answer:
-19
Step-by-step explanation:
the order of operations says that we do anything in the parenthesis first
you are going to times the numbers in the parenthesis by four.
-7+(-28+16)
-7-28+16
now it says to multiply and divide from left to right, but since there is nothing to multiply or divide, we will move on to the next step.
add and subtract from left to right
-7-28+16
-35+16
-19
Hope this helps!
The town librarian bought a combination of new-release movies on DVD for $20 and classic movies on DVD for $8.
Let x represent the number of new releases, and let y represent the number of classics. If the librarian had a budget
of $500 and wanted to purchase as many DVDs as possible, which values of x and y could represent the number of
new-release and classic movies bought?
Answers
Answer:
16 new releases and 22 classic movies.
100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
Answers
Answer:
100°
Step-by-step explanation:
tThe sum of all arc measures that make up that circle is 360 degrees.
QS + RQ + RS = 360
QS = 360 - 120 - 140 = 100
An arc angle is the degree measurement of that angle inside the circle, opposite the arc
m∠R = arc QS = 100°
Answer:
∠ R = 50°
Step-by-step explanation:
the inscribed angle R is half the measure of its intercepted arc QS
the sum of the arcs on a circle is 360° , that is
RQ + QS + SR = 360°
120° + QS + 140° = 360°
QS + 260° = 360° ( subtract 260° from both sides )
QS = 100°
Then
∠ R = \(\frac{1}{2}\) × 100° = 50°