Answers
Answer:
508.68cm^2
Step-by-step explanation:
this is a semicircle, so first get the whole circle by s=
[tex]\pi \: r {}^{2} [/tex]
so it said you should plug in 3.14 for pi,
3.14×18^2=1017.36
and semicircle should be the half of it, which is 508.68 cm^2
Answer:
127.17 cm²
Step-by-step explanation:
The area of a circle of radius r is given the the formula below.
A = πr²
Since you have a semicircle, divide the area of a circle by 2.
A[semicircle] = πr²/2
A[semicircle] = 3.14 × (9 cm)² / 2 = 127.17 cm²
Answer: 127.17 cm²
You are correct. Remember to include the units. In this case, it is cm².
Related Questions
PLEASE HEELP QUICKLY
Answers
Answer:
y=-2x
Step-by-step explanation:
if x<-5
x+5<0
x-5 also<0
so
|x-5|=-(x-5)=-x+5
|x+5|=-(x+5)=-x-5
Hence
y=-x+5-x-5
or
y=-2x,if x<-5
What are the numbers to fill in this table?
Answers
Step-by-step explanation:
y = -50x -100
When x= 0, plug in 0 to x.
y = -50(0) -100
= 0 - 100
= -100
So in the first y box, you would put -100
I can't tell what the number is in bottom right box so i don't know what x is going to be
To put it simply. U in math means 'or' right?
I'm not looking for the answer oogle gives.
Answers
Answer:
U is Union
Step-by-step explanation:
In math, the symbol U represents the union of two sets.
the temperature drops from 60 degrees to 38 degrees in 3hrs how man degrees did the temp drop in 1 hr
Answers
Answer:
7.3degrees
Step-by-step explanation:
60 -38=22°
3hrs=22°
1hr=?
1×22=22÷3=7.3°
1) Multiple the following and write the answer:
7.06×5
Answers
Answer:
35.3
explanation:
7.06 × 5breakdown:
7 × 5 = 35 0.06 × 5 = 0.3total:
35 + 0.335.3[tex]\\ \rm{:}\dashrightarrow 7.06(5)[/tex]
[tex]\\ \rm{:}\dashrightarrow (7+0.06)(5)[/tex]
[tex]\\ \rm{:}\dashrightarrow 7(5)+0.06(5)[/tex]
[tex]\\ \rm{:}\dashrightarrow 35+0.3[/tex]
[tex]\\ \rm{:}\dashrightarrow 35.3[/tex]
Simplifying and solving rational p
Answers
Answer:
A. x = 0, 14
B. x = 12, -2
Step-by-step explanation:
A.
2x - 3 x + 6
/ = /
x + 1 x - 2
2x^2 - 7x + 6 = x^2 + 7x + 6
- x^2 - 7x - 6 - x^2 - 7x - 6
x^2 - 14x = 0
( x + 0 ) = 0 ( x - 14 ) = 0
x = 0, +14 +14
x = 14
-----------------------------------------------------
B.
2 x
/ = /
x 5x + 12
x^2 = 2( 5x + 12 )
x^2 = 10x + 24
- 10x - 24 - 10x - 24
x^2 - 10x - 24 = 0
( x - 12 ) = 0 ( x + 2) = 0
+12 +12 -2 -2
x = 12, x = -2
I hope this helps!
find the size of angle XYZ give your answer to 1 decimal place
Answers
Find: XYZ
In XYZ
13/4
Y=(13/4)
Y= 72.89°
So answer is y=72.9°
6. Find the volume of the cone. Use 3.14 for pl and round your answer to the nearest tenth
11 mi
D
5 mi
287.8 mi
869.2 mi
O 1,899.7 mi
57.6 mi
Answers
Answer:
D) 7.1 units³
Step-by-step explanation:
V = (3.14)(1.5)²(3/3)
= (3.14)2.25 = 7.1
20+20+???
a. 80
b. 20
c .40
d. 100
Answers
Answer:
c .40
Step-by-step explanation:
Answer:
c .40
Step-by-step explanation:
because we all now that 20+20 is the same as 20×2 which gives us 40
How do you learn quantitative variables without getting confused so quick?
Answers
Step-by-step explanation:
integral of log(log x)+1 /(log x)² is equal tointegral of log(log x)+1 /(log x)² is equal to
What is 15x+3y=9
y=-5x-3
Answers
Answer:
x = 3/5
Step-by-step explanation:
15x+3(5x-3) = 9
15x+15x-9 =9
30x-9 = 9
30x-9+9 = 9+9
30x = 18
x = 18/30
x = 3/5
Shalonda made a budget for her family. Her total monthly income is $3,250 and she spends $760 on rent. Approximately what percent of Shalonda’s budget is allocated for rent?
Answers
76 / 325 = 23.38% so 23.4% so round down to 23% is used for rent
Bob bought a book with 120 pages in it. He read 35% of the book the first night.
How many pages did he read the first night?
Answers
Answer: 42 pages
Step-by-step explanation:
120 of 35%
120 x 35/100
42
Answer:
42%
Step-by-step explanation:
35% of 120 = 35% × 120
35 × 120 = 4200
4200 = 42%
42%
A college student earns $15,000 working part time at a bookstore. The student pays 110 of the earnings in taxes, spends 25 of the earnings on living expenses, and saves the remainder of the earnings. How much money does the student save?.
Answers
The total money that student saves after paying tax and other expenses is $9600
It is given that
Total earning = $15000
Tax = 1%
Spendings on living expenses = 25%
What is the percentage?The percentage is the value per hundred.
Total saving = Total earning- Tax-spendings on living expenses
Total saving = 15000-(11% of 15000 -(25%of 15000)
Total saving = 15000-11*15000/100 - 15000*25/100
Total saviing = 15000-1650-3750
Total saving = $9600
Therefore, The total money that student saves after paying tax and other expenses is $9600.
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Evaluate the expression
Answers
Solution:
Facts about absolute values:
The absolute value of a number is always positive. If the question asks to find the absolute value of a negative integer, the result will be the number's opposite.If the question asks to find the absolute value of a positive integer, the result will be the number itself.We know that:
Given expression: I-12IThis question is asking to find the absolute value of a negative integer. As said above, the result will be the negative integer's opposite.
=> -12's opposite is 12.The absolute value of -12 is 12.
A researcher collated data on americans’ leisure time activities. she found the mean number of hours spent watching television each weekday to be 2.7 hours with a standard deviation of 0.2 hours. jonathan believes that his football team buddies watch less television than the average american. he gathered data from 40 football teammates and found the mean to be 2.3. which of the following are the correct null and alternate hypotheses? h0: mu = 2.7; ha: mu less-than 2.7 h0: mu not-equals 2.7; ha: mu = 2.3 h0: mu = 2.7; ha: mu not-equals 2.7 h0: mu = 2.7; ha: mu greater-than-or-equal-to 2.3
Answers
The correct null and the alternative hypotheses are:
[tex]h_0: \mu = 2.7\\\\ h_a: \mu < 2.7[/tex]
What is a hypothesis?A hypothesis is an untested statement in mathematics that is supported by all available data and numerous weaker results.
A "conjecture" is a mathematical statement that has not been proven.
The given data in the problem is;
n is the sample size = 40
μ is the population mean = 2.7
[tex]\rm \sigma[/tex] is the standard deviation= 0.2
[tex]\bar x[/tex] is the sample mean:= 2.3
It is found that the null hypothesis always shows the equality sign.
So for the null hypothesis;
[tex]h_0: \mu = 2.7[/tex]
It is observed that the sample mean is less than the population mean in that case, the alternate hypothesis will be;
[tex]h_a: \mu < 2.7[/tex]
Hence the correct null and the alternative hypotheses are:
[tex]h_0: \mu = 2.7\\\\ h_a: \mu < 2.7[/tex]
To learn more about the hypothesis refer to the link;
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Find the volume of a rectangular prism with a length of 13.4 ft, a width of 10.3 ft and
a height of 5 ft, to the nearest tenth of a cubic foot.
Answers
Answer:
690.1
Step-by-step explanation:
13.4 x 10.3 x 5
Answer:
Hey bro. UR answer is 690.1 cubic feet
Step-by-step explanation:
V = whl = 10.3 x 5 x 13.4=690.1
The management of a restaurant with locations all over the country has developed a new hamburger that researchers believe will sell better than the hamburger that is currently sold. Which of the following is the best way to perform a randomized experiment with the goal of determining if this new hamburger will sell better than the hamburger that is currently sold?
Randomly select 40 regions from all regions throughout the country, have the restaurants in those regions stop selling the current hamburger, and start selling the new hamburger to see if sales increase.
Randomly select 40 regions from all regions throughout the country, have the restaurants in those regions stop selling the current hamburger, and start selling the new hamburger to see if sales increase.
Have all the company’s restaurants throughout the country stop selling the current hamburger and start selling the new hamburger to see if sales increase.
Have all the company’s restaurants throughout the country stop selling the current hamburger and start selling the new hamburger to see if sales increase.
Randomly select 40 restaurants, let each one decide if it wants to sell the new hamburger, and compare sales in those restaurants to sales in the restaurants that chose not to sell the new hamburger.
Randomly select 40 restaurants, let each one decide if it wants to sell the new hamburger, and compare sales in those restaurants to sales in the restaurants that chose not to sell the new hamburger.
Have all the restaurants in the western part of the country stop selling the current hamburger and start selling the new hamburger to se
Answers
Using sampling concepts, it is found that the best way to perform a randomized experiment with the goal of determining if this new hamburger will sell better than the hamburger that is currently sold is as follows:
Randomly select 40 restaurants, let each one decide if it wants to sell the new hamburger, and compare sales in those restaurants to sales in the restaurants that chose not to sell the new hamburger.
What is sampling?It is is a common statistics practice, when we want to study something from a population, we find a sample of this population.
For example:
I want to estimate the proportion of New York state residents who are Buffalo Bills fans. So i ask, lets say, 1000 randomly selected New York state residents whether they are Buffalo Bills fans, and expand this to the entire population of New York State residents.
In this problem, a sample of randomly selected restaurants should be taken to sell the new hamburger, and then be compared with the ones who sell the old hamburger to see if sales increased, hence the correct option is:
Randomly select 40 restaurants, let each one decide if it wants to sell the new hamburger, and compare sales in those restaurants to sales in the restaurants that chose not to sell the new hamburger.
More can be learned about sampling concepts at https://brainly.com/question/25122507
Find the measure of jml
Answers
The total measure of a straight line is 180 deg so if we know lmn then we can find the measure of x pretty easily.
3x + 69=180
Now simplify:
3(x+23)=180
X+23 =60
X = 37
Now multiply x by 3 to find the measure of jml
3*37=111
Which makes sense cause 111+69 = 180
I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS MATH QUESTION RIGHT
Answers
Answer:
reflection, rotation, and translation would be correct
Step-by-step explanation:
dilation/enlargement changes size
WÝ is the perpendicular
bisector of XZ.
Answers
They are equal since the perpendicular bisector cuts them perfectly in half
x=8
Answer:
x = 8
Step-by-step explanation:
The halves of a bisected segment are congruent, so we have ...
YZ = YX
3x -5 = 2x +3
x = 8 . . . . . . . . add 5-2x
__
Additional comment
The right triangles are congruent, so ...
WZ = WX
2y +7 = 5y -8
15 = 3y
5 = y
PLS HELP I WILL REALY BE HAPPY IF YOU HELPED A window is being replaced with tinted glass. The plan below shows the design of the window. Each unit length represents 1 foot. The glass costs $13 per square foot. How much will it cost to replace the glass? Use 3.14 for π
Answers
Step 1 :
Separate the composite figure into simpler shapes as shown by the dashed lines : a rectangle, two semicircles with equal area (one is one the left side of the rectangle and other one is on the right side).
Step 2 :
Find the area the rectangle.
Length (l) = 5 ft
Width (w) = 4 ft
Use the formula.
A = lw
A = 5 · 4
A = 20 square ft
The area of the rectangle is 24 square feet.
Step 3 :
Find the combined area of two semi-circles.
Radius = 2 ft
Use the formula.
A = 2 x (1/2)πr2
A = πr2
A = (3.14)(2)2
A = (3.14)(4)
A = 12.56 square ft
The combined area of two semi circles is about 12.56 square ft.
Step 4 :
Find the area of the composite figure.
A = 20 + 12.56 = 32.56 square ft
Step 5 :
Calculate the cost of tinted glass for the window.
Total cost = Area · Cost per feet
Total cost = 32.56 · $28
Total cost = $911.68
So, the cost of tinted glass for the window is $911.68.
(I'm not sure about the answer ) and mark me as brainy !
Nabil has 1000 cm³ of material. He uses 8.7 cm³ to make a right triangular prism. He wants to make a second prism that is a dilation of the first prism with a scale factor of 5. How much more material does Nabil need in order to make the second prism? Select from the drop-down menu to correctly complete the statement.
96.2
87.5
78.8
Answers
Answer:
96.2
Step-by-step explanation:
The material Nabil need in order to make the second prism is 87.5
How does dilation affect length, area, and volume of an object?Suppose a figure (pre image) is dilated (dilated image) by scale factor of k.
So, if a side of the figure is of length L units, and that of its similar figure is of M units, then:
L = k × M
where 'k' will be called as scale factor.
The linear things grow linearly like length, height etc.
The quantities which are squares or multiple of linear things twice grow by square of scale factor. Thus, we need to multiply or divide by k² to get each other corresponding quantity from their similar figures' quantities.
So area of first figure = k² × area of second figure
Similarly,
Volume of first figure = k³ × volume of second figure.
It is because we will need to multiply 3 linear quantities to get volume, which results in k getting multiplied 3 times, thus, cubed.
We are given that;
Volume of material= 1000 cm³
Volume of prism= 8.7 cm³
Now,
Find the volume of the first prism using the formula: V = (1/2)bhℓ1, where b is the base, h is the height of the triangle, and ℓ is the length of the prism. Plug in the given values: V = (1/2)(8.7)(8.7)(10) = 378.45 cm³
Find the volume of the second prism using the same formula, but multiply each dimension by 5 since it is a dilation with a scale factor of 5: V = (1/2)(5b)(5h)(5ℓ) = (1/2)(43.5)(43.5)(50) = 46593.75 cm³
Subtract the volume of material he has from the volume of material he needs for both prisms: 1000 - (378.45 + 46593.75) = -45972.2 cm³
Since he needs more material than he has, he needs to get more material with a volume equal to | -45972.2 | cm³ or 45972.2 cm³.
Therefore, by dilation the answer will be 87.5
Learn more about dilation here:
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Can someone help me with this adverb question? I’ll give brainliest.
Select all the adverbs.
Maddie is anxiously awaiting the result of her interview with the electronics company.
Answers
An angle measures 41.4° less than the measure of its supplementary angle. What is the
measure of each angle?
o and
Answers
Answer: 69.3 and 110.7 degrees
Step-by-step explanation:
Write the exponential function.
Answers
Answer:
[tex]f(x) = 10*(b)^x[/tex]
Step-by-step explanation:
exponential function : [tex]y=a*(b)^x[/tex]
where a = y intercept and b = factor ( what you multiply by )
looking at the table the y intercept is at (0,10) so a = 10
so we now have y = 10 * (b)^x
to find the factor we simply plug in one of the ordered pairs.
note that the ordered pair chosen does not effect the outcome
i chose (2,250)
we have y = 10 * (b)^x
(x,y) = (2,250)
250 = 10 * (b)^2
divide both sides by 10
25 = b^2
take the square root of both sides
5 = b
the final equation would be f(x) = 10 * (b)^x
What is the sum of the first 90 consecutive odd numbers?
Answers
Hope it helps pls brainlest:)
Subject Congruent Shapes. (please help asap)
Problem 1
Answers
[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]
The Length of PQ such that Triangle JKL is similar to Triangle PQR ~
To make the given triangles similar, we have to get the ratios of each of their corresponding side to be equal to one another.
That is :
[tex]\qquad \sf \dashrightarrow \: \dfrac{PQ}{12} = \dfrac{9}{6} [/tex]
[tex]\qquad \sf \dashrightarrow \: PQ = \dfrac{9}{6} \times 12[/tex]
[tex]\qquad \sf \dashrightarrow \: PQ = {9}{} \times 2[/tex]
[tex]\qquad \sf \dashrightarrow \: PQ = 18 \: units[/tex]
hence, the option C is correct
help me plsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
Answers
If you look at the sides of the smaller quadrilateral it shows that the left side is 3, since the bigger quadrilateral is practically the same, the left side of the bigger quadrilateral is 6. This shows that it doubled in size. This leads to my conclusion of x = 8.
10 of 15
What is
1/6 as a decimal?
Give your answer rounded to 3 decimal places.
Answers
Answer:
=> 0.167Step-by-step explanation:
=> 1/6 as a decimal
=> by dividing we get 0.1666....
=> rounded to 3 decimal places = 0.167