Answers
Answer:
294.84 ft²
Step-by-step explanation:
A = (B + b)h/2
A = (28.5 ft + 18.3 ft)(12.6 ft)/2
A = 294.84 ft²
Answer: 294.84 ft^2
Step-by-step explanation:
Area of trapezoid=((a+b)/2)*h
here
a=28.5 ft
b=18.3 ft
h=12.7 ft
Area=((28.5+18.3)/2)*(12.7)
Area=294.84 ft^2
Related Questions
PLEASE HELP ASAP I WILL GIVE BRAINLIEST!!!!!!!!
8:54 am
9:12 am
9:24 am
10:24 am
11:18 am
Light A flashes every 12 minutes, and Light B flashes every 18 minutes. The two lights flash at the same time at 8:00 am. At how many of the times listed above will they again both flash at the same time?
Answers
Answer:
9:12 10:24
Step-by-step explanation:
First find their least common divisor which is 36. which means every 36 minutes they will flashes together.
just add the 36 to the time where they flash at the same time which is 8:00am
8:36 9:12 9:48 10:24 11:00 11:36
Answer: 9:12 and 10:24
Step-by-step explanation:
if we start from 8 am and add 12 minutes for light A in intervals and do the same for Light B we can see where the times are the same
Light A: 8:00, 8:12, 8:24, 8:36, 8:48, 9:00, 9:12, 9:24, 9:36, 9:48, 10:00, 10:12, 10:24, 10:36, 10:48, 11:00, 11:12, 11:24
Light B: 8:00, 8:18, 8:36, 8:54, 9:12, 9:30, 9:48, 10:06, 10:24, 10:42, 11:00, 11:18
9:12 and 10:24 are the correct answers because this is when the two lights flash at the same time
100000/222
solve with proper steps and find the remainder
Answers
Answer: 450 rest 100
Step-by-step explanation:
So, we need to calculate this division 100.000/222 and get the rest.
Well, 222 enters in 1000 by 4 times.
222 times 4 is 888
So, 100.000/222 = 4
888-
We subtract 888 from 1000.
That will be 112
100.000/222 = 4
888
112
Now, get the next 0 down next to 112
100.000/222 = 4
888
1120
222 get in 1120 by 5 times.
5 times 222 = 1110
divide 1120 by 1110
100.000/222 = 45
888
1120
1110
That will be 10
100.000/222 = 45
888
1120
==10
Get the next zero down
100.000/222 = 45
888
1120
==100
222 gets in 100 by 0 times.
100.000/222 = 450
888
1120
==100
0
100 subtracted by 0 is 100
100.000/222 = 450
888
1120
==100
0
100
The rest is 100 and the result is 450
Now, you can do the verification:
222 time 450 is 99,900.
If you add the rest to 99,900 it will be 100.000. So the result is good
The quotient of (x4 5x3 – 3x – 15) and (x3 – 3) is a polynomial. what is the quotient?
Answers
The quotient of [tex]x^{4} +5x^{3} -3x-15[/tex] and [tex]x^{3} -3[/tex] is (x+5).
Given expression [tex]x^{4} +5x^{3} -3x-15[/tex] and [tex]x^{3}-3[/tex] and we have to find the quotient of the first expression.
Quotient is any quantity produced by dividing two numbers. It can be of simple numbers or expressions also. Remainder is a number or expression that is left after division.
To find the quotient of [tex]x^{4}+5x^{3} -3x-15[/tex], we have to divide the expression by [tex]x^{3}-3[/tex].
We know that,
Divident=Divisor*quotient+remainder
[tex]x^{4}+5x^{3}-3x-15[/tex]=([tex]x^{3}-3[/tex])*(x+5)+0
By equating from the given formula we can find that the value of quotient is (x+5).
Hence the quotient of [tex]x^{2} +5x^{3} -3x-15[/tex] by dividing it by [tex]x^{3} -3[/tex] is (x+5).
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Question is incomplete as the expressions are incomplete. They should be like [tex]x^{4} +5x^{3} -3x-15[/tex] and [tex]x^{3} -3[/tex]
PLEASE I NEED HELP QUICK
Deshaun wants to wallpaper the back wall of his bedroom. The wall is in the shape of a rectangle. Its length is 16 feet and its width is 8 feet. Suppose wallpaper costs $6 for each square foot. How much will wallpaper cost for the wall?
Answers
Answer: $768
Step-by-step explanation:
Here, you'll just multiply:
16x8x6 = 768
Translate this phrase into an algebraic expression.
47 decreased by twice a number
Use the variable n to represent the unknown number.
Answers
Answer:
47 - 2n
Step-by-step explanation:
An algebraic expression is an idea of representing numbers using letters or alphabet.
From the question above,
The variable = n
twice the number = 2× n = 2n
Translating:
47 - 2n
find the inverse matrix or type "none". (use decimals) {11 -5 3 -1}
Answers
The inverse of the matrix [tex]\left[\begin{array}{cc}11&-5\\3&-1\end{array}\right][/tex] is the matrix [tex]\left[\begin{array}{cc}\frac{-1}{4} &\frac{5}{4} \\\\\frac{-3}{4} &\frac{11}{4} \end{array}\right][/tex] .
The inverse of a matrix A is calculated by the formula:
A' = (1/|A|)(Adj A),
where A' represents the inverse of matrix A,
|A| represents the determinant value of matrix A, and
Adj A represents the Adjoin matrix of matrix A.
So, to calculate the inverse of the matrix [tex]\left[\begin{array}{cc}11&-5\\3&-1\end{array}\right][/tex] , we will first calculate its Adj.
Adj = [tex]\left[\begin{array}{cc}-1&-3\\5&11\end{array}\right] ^{T}[/tex]= [tex]\left[\begin{array}{cc}-1&5\\-3&11\end{array}\right][/tex].
Now, we calculate |A| = 11*(-1) - (-5)*3 = -11 + 15 = 4.
Therefore A' = (1/|A|)(Adj A),
or, A' = [tex](1/4)*\left[\begin{array}{cc}-1&5\\-3&11\end{array}\right][/tex] ,
or, A' = [tex]\left[\begin{array}{cc}\frac{-1}{4} &\frac{5}{4} \\\\\frac{-3}{4} &\frac{11}{4} \end{array}\right][/tex] .
Therefore, the inverse of the matrix [tex]\left[\begin{array}{cc}11&-5\\3&-1\end{array}\right][/tex] is the matrix [tex]\left[\begin{array}{cc}\frac{-1}{4} &\frac{5}{4} \\\\\frac{-3}{4} &\frac{11}{4} \end{array}\right][/tex] .
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Rosie just moved to new york city and makes $2,700 per month at her new job. each month, she pays $2,000 for rent, $100 for the subway, and $200 for groceries. she saves $100 a month for a rainy day. how much can she spend on other things?
Answers
Answer:
2700 - 2000 = 700 - 100 = 600 - 200 = 400 - 100 = 300
300 dollars
Suppose 58% of the registered voters in a country are Republican. If a sample of 536 voters is selected, what is the probability that the sample proportion of Republicans will differ from the population proportion by greater than 5%
Answers
The probability that the sample proportion of Republicans will differ from the population proportion by greater than 5% is 100%
Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates the impossibility of the event and 1 indicates certainty.
It is given that 58% of voters are Republican. The sample is 536 voters.
0.58×536 = 310.88 can be rounded off to 311.
536 - 311 = 225 are not republicans
311-225 = 86 is the difference
[tex]\frac{86}{536}[/tex]×100 = 16.044%
Hence, the probability is 100%.
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In one week, we sold 184 baskets at $3.25 each. The following week, we reduced the price of the basket to $2.
How many baskets were sold then?
Answers
The number of baskets that were sold for $2 is 299 baskets.
What is a word problem?A word problem is a method we used in denoting mathematical expressions and variables and it can be solved with the use of fractions, ratios, algebra, and arithmetic operations as the case may be.
From the given information:
If 184 baskets is sold for = $3.25; and (x) baskets is sold for = $2The number of baskets sold in the second week is obtained as follows
i.e.
x = (184 × 3.25)/2
x = 299 basket were sold for $2
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PLS HELP I NEED THE EQUATION
Answers
Hello and Good Morning/Afternoon:
Let's take this problem step-by-step:
Let's write in the point-slope form:
[tex](y-y_0)=m(x-x_0)[/tex]
(x₀,y₀) --> any random point on the linem: slopeLet's find the slope:
[tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex]
(x₁,y₁) ==> a random point on the line ⇒ (1, -1) (x₂,y₂) ==> a random point on the line not (x₁,y₁) ⇒ (4, 8)
⇒ [tex]Slope=\frac{8--1}{4-1}=\frac{9}{3}=3[/tex]
Let's gather what we know:
(x₀,y₀) = (1,-1)m: 3Equation: [tex](y-y_0)=m(x-x_0)\\y+1=3(x-1)[/tex]
The equation could also be written in slope-intercept form:
⇒ simply isolate y on one side
[tex]y+1=3(x-1)\\y=3x-3-1\\y=3x-4[/tex]
Answer:
Point-slope form: y + 1 =3(x - 1)Slope-intercept form: y= 3x - 4*Either answer works, just put the one that you are most familiar with
Hope that helps!
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Answer: y=3x-4
Step-by-step explanation:
Slope formula = ([tex]y_{1}[/tex] - [tex]y_2[/tex])/([tex]x_1 - x_2[/tex])
(-1-8)/(1-4) = (-9)/(-3) = 3
Slope = 3
Slope intercept formula = y=mx+b
m = slope = 3
y=3x+b
We can plug in x and y to find b
8=3(4)+b
8=12+b then subtract 12 from both sides
-4=b
Now we put it in
y=3x-4
Write the prime factorization of 27. Use exponents when appropriate and order the factors from least to greatest
Answers
Answer:
27 = 3³
Step-by-step explanation:
The prime factorization of 27 is ...
27 = 3×3×3 = 3³
The exponent of 3 signifies the factor is repeated 3 times.
What is the value of this expression when c = -4 and d = 10?
A.
2
B.
9
C.
21
D.
41
Answers
For f(x) = 4x+1 and g(x)=x²-5, find
O A.
OB.
O C.
4x+1
th
x²-5
4x+1
-5>**+-√/5
√√5
4x+1
²²-5
OD. ²-5
4x+1
g
(x).
Answers
Answer:
OA=4x²-19
Step-by-step explanation:
4(x²-5)+1
4x²-19
Which expressions are equivalent to the one below? Check all that apply.
Answers
Answer:
0
Step-by-step explanation:
㏒₇1 = 0 and ㏒₅25 = 2, so the expression evaluates to 0.
A consumer affairs investigator records the repair cost for 4 randomly selected washers. A sample mean of $52.63 and standard deviation of $22.01 are subsequently computed. Determine the 80% confidence interval for the mean repair cost for the washers. Assume the population is approximately normal. Find the critical value that should be used in constructing the confidence interval.
Answers
The critical z value which should be used in determining the confidence interval is z=1.29 and the confidence interval is (38.43355,66.82645).
Given sample mean of $52.63 and standard deviation of $22.01.
We have to construct the confidence interval of 80% for the mean repair cost for the washers.
μ=52.63
σ=22.01
n=4
First we have to find the value of z for the confidence level of 80% from z table and which is 1.29.
Margin of error is the difference between the calculated values and real values.
Margin of error=z*σ/[tex]\sqrt{n}[/tex]
where μ is mean
σ is standard deviation
n is sample size
z is z value for the confidence level
Margin of error=1.29*22.01/[tex]\sqrt{4}[/tex]
=14.19645
Confidence interval =mean ±margin of error
Upper level=mean +margin of error
=52.33+14.19645
=66.82645
Lower level=mean-margin of error
=52.33-14.19645
=38.43355
Hence the confidence interval is (38.43355,66.82645) and the critical value used is z=1.29.
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Write a paragraph describing the business venture and what kind of algebra or other calculations and formulas might help someone in that endeavor. Also include ways in which the business might operate differently with those tools than without them.
Answers
Answer:
Starting a business can be a daunting task, but with a little algebra and some careful planning, it can be a successful endeavor. Algebra can help you determine how much start-up capital you will need, as well as how to price your products or services. It can also help you track your expenses and calculate your profits. Without these tools, it would be difficult to know if your business is viable or if you are making a profit.
In the following exercises, multiply the binomials. Use any method.
244. (x − 7)(x − 2)
Answers
Multiplying the binomials, we have (x - 7)(x - 2) = x² - 9x + 14.
How to Multiply Binomials?Applying the distribution property of multiplication, the given binomials, (x - 7)(x - 2) can be multiplied as shown below:
(x - 7)(x - 2)
x(x - 2) -7(x - 2)
x² - 2x - 7x + 14
x² - 9x + 14
Therefore, (x - 7)(x - 2) = x² - 9x + 14.
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Answer:
Hence the expression [tex]$$(x-7)(x-2)=x^2-9x-14$$[/tex]
Step-by-step explanation:
The given expression is (x-7)(x-2).
We have to multiply the given expression.
Multiply the (x-7) by-2, multiply the (x-7) by x then add like terms.
[tex]$$\frac{\begin{matrix}{} & {} & x & - & 7 \\ \times & {} & x & - & 2 \\ \end{matrix}}[/tex]
____________
[tex]{\frac{\begin{matrix}{} & - & 2x & - & 14 \\ {{x}^2} & - & 7x & {} & {} \\ \end{matrix}}{\begin{matrix}{{x}^2} & - & 9x & - & 14 \\ \end{matrix}}}$$[/tex]
What is the simplest form of the expression (–11.7y – 3.3x) + 1.2x + (5.2y + x)?
–16.9y – 5.5x
–16.9y – 4.5x
–6.5y – 2.1x
–6.5y – 1.1x
Answers
The simplest form of (–11.7y – 3.3x) + 1.2x + (5.2y + x) is -6.5y - 1.1x
How to simplify an equation?(–11.7y – 3.3x) + 1.2x + (5.2y + x)
We have to open the brackets.
Therefore,
(–11.7y – 3.3x) + 1.2x + (5.2y + x)
-11.7y - 3.3x + 1.2x + 5.2y + x
combine like terms
Hence,
-11.7y + 5.2y - 3.3x + 1.2x + x
Therefore,
-6.5y - 1.1x
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Answer: -6.5y - 1.1x
Step-by-step explanation:
Use complete sentences to describe the similarity between the three triangles shown in the diagram
below.
Answers
Answer: The three triangles shown are similar triangles. We can tell this by the Angle Angle theory. You can tell the angles are congruent by the matching marks in each corner of the triangles, the marks or “ticks” are the same in the same corners. The length of the sides can change but the angle measurements will still be the same.
Step-by-step explanation: explained in answer
Answer: Each of the corresponding angles of one triangle equal the corresponding angles of the other triangle.
Find the surface area. Round your answer to the nearest hundredths, if necessary. Leave your answer in terms of for answers that contain .
Answers
Answer:
C. 92.16π mi²
Step-by-step explanation:
Use the formula: 4 · π · r²
r=4.8
4 · π · 4.8²=
=4 · π · 23.04=
=92.16π mi²
Hope this helps!
If not, I am sorry.
The sum of angles in a triangle is 180 prove
Answers
three angles= 180
180/3
60
helppp easy quick points
Answers
PLS HELP! I WILL GIVE BRAINLIEST!
Answers
A = 50/2
= 25
B = 20/4
= 5
C = 30/3
= 10
From least to greatest: B, C, A
What is the gradient of the graph shown?
Answers
Answer:
1
Step-by-step explanation:
Start at any point on the line, for example (0, 1).
Each unit up correspond to a unit right. The next easy to read point going up to the right is (1, 2).
difference in y: 2 - 1 = 1
difference in x: 1 - 0 = 1
gradient = (difference in y)/(difference in x) = 1/1 = 1
Answer:
[tex]\huge\boxed{\sf Slope = 1 }[/tex]
Step-by-step explanation:
Take any two co-ordinates from the line.
I will take (0,1) and (-1,0)
So,
[tex](x_1,y_1)=(0,1)\\\\(x_2,y_2)=(-1,0)[/tex]
Finding gradient/slope:[tex]\displaystyle Slope = \frac{y_2-y_1}{x_2-x_1} \\\\Slope = \frac{0-1}{-1-0} \\\\Slope = \frac{-1}{-1} \\\\Slope = 1 \\\\\rule[225]{225}{2}[/tex]
Can you help me find the missing number I have an exam tomorrow and I really need to know the answer
(2/3)^ =16/81
Find the answer for ^
Answers
Hello,
[tex]( \frac{2}{3} ) {}^{n} = \frac{16}{81} [/tex]
[tex]nln( \frac{2}{3} ) = ln(\frac{16}{81})[/tex]
[tex]n = \frac{ln( \frac{16}{81} )}{ln( \frac{2}{3} )} = 4 [/tex]
Answer : 4
Answer:
^ is 4
Step-by-step explanation:
as you can see, [tex]\frac{16}{81}=\frac{2^4}{3^4}=(\frac{2}{3})^4[/tex]
4x-3/5 - 2x-3/2=-2
Solve for x
Answers
Answer:
I believe the answer should be -11/20
Step-by-step explanation:
Answer:
x = 14 1/2 or 14.5
Step-by-step explanation:
(4x-3)/5 - (2x-3)/2 = -2
make denominators match
2*(4x-3)/10 - 5*(2x-3)/10 = -2
(8x-6)/10 - (10x-15)/10 = -2
(8x-6-10x+15)/10 = -2
(-2x+9) = -2*10
-2x+9 = -20
-2x = -29
x = -29/-2
x = 14 1/2 or 14.5
gathmath
The height of a ball thrown vertically upward from a rooftop is modelled by h(t)= -4.8t^2 + 19.9t +55.3 where h (t) is the balls height of above the ground, in meters, at time t seconds after the thrown. Determine the maximum height of the ball. ( in numerical value)
Answers
By applying the quadratic formula and discriminant of the quadratic formula, we find that the maximum height of the ball is equal to 75.926 meters.
How to determine the maximum height of the ball
Herein we have a quadratic equation that models the height of a ball in time and the maximum height represents the vertex of the parabola, hence we must use the quadratic formula for the following expression:
- 4.8 · t² + 19.9 · t + (55.3 - h) = 0
The height of the ball is a maximum when the discriminant is equal to zero:
19.9² - 4 · (- 4.8) · (55.3 - h) = 0
396.01 + 19.2 · (55.3 - h) = 0
19.2 · (55.3 - h) = -396.01
55.3 - h = -20.626
h = 55.3 + 20.626
h = 75.926 m
By applying the quadratic formula and discriminant of the quadratic formula, we find that the maximum height of the ball is equal to 75.926 meters.
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How many different sets of initials can be formed if every person has one surname (i.e., last name) and either one or two given names (i.e., a first name, or a first and middle name).
Answers
The different sets of initials can be formed if every person has one surname (i.e., last name) and either one or two given names (i.e., a first name, or a first and middle name) is 15600.
There are 26 possible letters, each set of initials would have 3 letters in it, order doesn't matter, i.e. ABC does not equal ACB. using permutation 26P3 = 5600.
A permutation is a mathematical technique that determines the number of possible arrangements in a set when the order of the arrangements matters. Common mathematical problems involve choosing only several items from a set of items in a certain order.
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Rachel and Jennifer are taking the same biology class. They have a test in about a week during an 8-9AM class period. Both plan to study for about 5 hours, but because of different work schedules, Rachel will study one hour each day for 5 days and Jennifer will study 5 hours the day before the exam. What do you predict about their scores
Answers
Rachel should perform better because of the spacing effect.
Given,
Rachel will study one hour each day for 5 days and Jennifer will study 5 hours the day before the exam.
What do you predict about their scores?
Rachel should perform better because of the spacing effect.
The spacing effect demonstrates that learning is more effective when study sessions are spaced out. This effect shows that more information is encoded into long-term memory by spaced study sessions, also known as spaced repetition or spaced presentation, than by massed presentation.
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Please prove that
[tex]sec^{2} \beta - cosec^{2} = (tan \beta + cot \beta) * (tan \beta - cot \beta)[/tex]
Answers
Recall the Pythagorean identity.
[tex]\sin^2(x) + \cos^2(x) = 1 \implies \left\langle \begin{matrix} \tan^2(x) + 1 = \sec^2(x) \\ 1 + \cot^2(x) = \csc^2(x) \end{matrix} \right.[/tex]
[tex]\implies \sec^2(\beta) - \csc^2(\beta) = (\tan^2(\beta) + 1) - (1 + \cot^2(\beta)) \\\\ ~~~~~~~~= \tan^2(\beta) - \cot^2(\beta)[/tex]
Recall the difference of squares identity.
[tex]a^2 - b^2 = (a - b) (a + b)[/tex]
[tex]\implies \sec^2(\beta) - \csc^2(\beta) = (\tan(\beta) - \cot(\beta)) (\tan(\beta) + \cot(\beta))[/tex]
[tex]sec^2\beta -csc^2\beta \\(1+tan^2\beta )-(1+cot^2\beta )\\1+tan^2\beta -1-cot^2\beta \\tan^2\beta -cot^2\beta \\(tan\beta -cot\beta )(tan\beta +cot\beta )[/tex]