Answer:
The amount of jobs from fitting industry shall decline in 5.5 percent from 2015 to 2025.
Step-by-step explanation:
Due to the assumption of a yearly average rate, a linear function model shall be used. The expected amount of jobs ([tex]n[/tex]) after a certain amount of years (t) is given by the following formula:
[tex]n = n_{o} + \frac{\Delta n}{\Delta t}\cdot t[/tex]
Where:
[tex]n_{o}[/tex] - Initial amount of jobs in pipe fitting industry, measured in thousands.
[tex]\frac{\Delta n}{\Delta t}[/tex] - Average yearly rate, measured in thousands per year. (A decline is indicated by a negative sign)
If [tex]n_{o} = 546.5[/tex], [tex]t = 2025-2015 = 10\,years[/tex] and [tex]\frac{\Delta n}{\Delta t} = -3\,\frac{1}{years}[/tex], then:
[tex]n = 546.5+\left(-3\,\frac{1}{year}\right)\cdot (10\,years)[/tex]
[tex]n = 516.5[/tex]
The percent change in jobs from pipe fitting industry is calculated as follows:
[tex]\%n = \left(1-\frac{n}{n_{o}}\right)\times 100\,\%[/tex]
[tex]\% n = \left(1-\frac{516.5}{546.5}\right)\times 100\,\%[/tex]
[tex]\%n = 5.5\,\%[/tex]
The amount of jobs from fitting industry shall decline in 5.5 percent from 2015 to 2025.
An earthquake was felt throughout a circular area of 1808.64 Square miles what was the radius of the circular area
A.24 miles
B. 12 miles
c. 20 miles
d. 576 miles
Answer:
A
Step-by-step explanation:
The area of a circle is given by the formula:
[tex]A=\pi r^2[/tex]
Where A is the area and r is the radius.
Since we already know the area, we can plug it in and solve for r. Thus:
[tex]1808.64=\pi r^2\\[/tex]
Divide both sides by π. We can use 3.14 as an approximation. The πs on the right cancel out:
[tex]1808.64\div(3.14)=r^2\\r^2=576[/tex]
Take the square root of each side:
[tex]\sqrt{r^2}=\sqrt{576}[/tex]
The squares on the left cancel. The root of 576 is 24:
[tex]r=24[/tex]
Therefore, the radius is 24.
Answer:
I agree 24 miles
Step-by-step explanation:
the person above is correct
A company finds that the rate at which the quantity of a product that consumers demand changes with respect to price is given by the marginal-demand function Upper D prime (x )equals negative StartFraction 4000 Over x squared EndFraction where x is the price per unit, in dollars. Find the demand function if it is known that 1002 units of the product are demanded by consumers when the price is $4 per unit.
Answer: the demand function is D(x) = 4000/x + 2
Step-by-step explanation:
Given that
D'(x) = - 4000 / x²
Now d(D(x)/dx = - 4000/x²
so we integrate with respect to x
∫ d(D(x)) = - ∫ (4000/x²) dx = -4000 x⁻¹/-1 + C
⇒ D(x) = 4000/x + C
where C is a constant
Given that; x = 4 and D(x) = 1002
so we substitute
1002 = 4000 / 4 + C
1002 = 1000 + C
C = 1002 - 1000
C = 2
so D(x) = 4000/x + C ⇒ D(x) = 4000/x + 2
Therefore the demand function is D(x) = 4000/x + 2
lily scored her first Spanish test are 96, 85, 90, 92. What test score must lily earn on the 5th test so that her mean will be exactly 90.
Answer:
87
Step-by-step explanation:
[tex]\frac{96+85+90+92+x}{5} = 90\\[/tex]
[tex]\frac{353+x}{5} = 90[/tex]
[tex]353+x= 5(90)\\[/tex]
[tex]353+x=450[/tex]
[tex]x=87[/tex]
the ratio of girls to boys in the grade is 9 to 10. If there are 225 girls, how many boys are there?
Answer:
250 boys
Step-by-step explanation:
We know that the ratio is 9:10 from girls to boys
Take 225 and divide it by 9
225 ÷ 9 = 25
So we know that 25 is a factor of 225
We can the number of boys and multiply it by 25 to get 250
If we put it in the ratio form:
225:250 = 9/10
Check work:
25 x 9 = 225
25 x 10 = 250
Girls :Boys = 9:10
Total girls= 225
9=225
10=10/9×225
=250
NB: It will 250 because 9 is going to cancel 225
Please help me please?! ❤️❤️
Answer:
(4,3)
Step-by-step explanation:
Point V lies in the Ist quadrant . and the co-ordinates are (4,3)
which of the following is equivalent to 2/5 x 3/8
Answer:
[tex]\frac{3}{20}[/tex] or [tex]0.15[/tex] (they're the same thing)
Step-by-step explanation:
Find a common denominator between the fractions. Both denominator have an LGM of 40Increase the denominators, so they both are now 40. To make it even, increase the nominators by however much you increase the denominators: 5 × 8 = 40 and 8 × 5 = 40. 2 × 8 = 16 and 3 × 5 = 15.You fractions should now look like this: [tex]\frac{16}{40} and \frac{15}{40}[/tex] Now, you can multiply them together. So, 16/40 times 15/40 is 3/20 or 0.15 (they're the same)I hope this helps!
Evaluate |-6| + 3|4| + |-5| - 0 × 6.
0
18
23
25
Answer:
23
Step-by-step explanation:
please help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
60
Step-by-step explanation:
1, Extand line y for which y intercepts CB at point K
2, line y is a straight line and thus KAB=180-110=70
3, AY parallel to CX thus angle CKA=130 which is a alternative angle of BCX (if you can't see then try to extend CX as well
4,BKA=180-130=50 as BC is a straight line
5, the sum of interior angle of a triangle is 180, and we have KAB and BKA, thus angle ABC = 180-KAB-BKA=180-70-50=60
Write in standard form 9x + 3x^2-4x^8+x^4+2x^4 in standard form
Answer:
- 4x^8 + 3x^4 + 3x^2 + 9x
Step-by-step explanation:
Standard form means that the terms are ordered from biggest exponent to lowest exponentFirst simplify
9x + 3x^2-4x^8+x^4+2x^4 = 9x + 3x^2 - 4x^8 + 3x^4Put in standard form
- 4x^8 + 3x^4 + 3x^2 + 9xSmaller p-values indicate more evidence in support of the: A. the reduction of variance B. null hypothesis C. quality of the researcher D. alternative hypothesis
Answer:
A. the reduction of variance
Step-by-step explanation:
If the p bakue gets smaller, the smaller the p- value the stronger the evidence that we can or we should totally reject and not accept the null hypothesis.
Id the p value is lower, the result is trumpeted as significant, but if higher,it is not significant.
So Smaller p-values indicate more evidence in support of the the reduction of variance
factor 9x^4 -225y^8 10 points
Answer:
9(x² + 5y⁴) (x² - 5y⁴)
Step-by-step explanation:
9x⁴ - 225y⁸
factor out a 9
9(x⁴ - 25y⁸)
factor (x⁴ - 25y⁸)
(x⁴ - 25y⁸)
x² • x² = x⁴
5y⁴ • -5y⁴ = -25y⁸
(x² + 5y⁴) (x² - 5y⁴)
↓
9(x² + 5y⁴) (x² - 5y⁴)
3x=2x+50 solve for x
this is the answer to your question x=50
Step-by-step explanation:
3x-2x=50
1x=50
The value of x for the given equation is given as x = 50.
How to solve a linear equation?A linear equation can be solved by equating the LHS and RHS of the equation following some basic rules such as by adding or subtracting the same numbers on both sides and similarly, doing division and multiplication with the same numbers.
The given equation is as below,
3x = 2x + 50
It can be solved as follows,
3x = 2x + 50
=> 3x - 2x = 50
=> x = 50
Hence, the solution of the given linear equation is x = 50.
To know more about linear equation click on,
https://brainly.com/question/11897796
#SPJ2
Solve this plz. It’s 4x4 sudoku
Answer:
Step-by-step explanation:
16
the fourth term of a sequence is 40. write the first 5 terms of two different sequences that satisfy that condition
Answer:
A.P. : 10, 20, 30, 40, 50
G.P. : 5, 10, 20, 40, 80 .
Step-by-step explanation:
It is given that fourth term of a sequence is 40.
It is not given that whether the sequence is A.P. or G.P.
We need to write two different sequences that satisfy the given condition.
For A.P.,
Required sequence : 10, 20, 30, 40, 50
Here, first term is 10, common difference is 10.
For G.P.,
Required sequence : 5, 10, 20, 40, 80
Here, first term is 5, common ratio is 2.
Therefore, the two sequences are 10, 20, 30, 40, 50 and 5, 10, 20, 40, 80 .
A carpenter needs 36 screws that are 1.5 inches long, 24 screws that are 2 inches long, and 12 screws that are 2.5 inches long.
What is the ratio of the total length of the 2-inch screws to the total length of all the screws? Do not reduce.
Answer:
48/132
Step-by-step explanation:
The length of 1.5-inch screws is ...
36 × 1.5 in = 54 in
The length of 2-inch screws is ...
24 × 2 in = 48 in
The length of 2.5-inch screws is ...
12 × 2.5 = 30 in
The total length of all screws is ...
54 in + 48 in + 30 in = 132 in
Then the ratio of 2-in screw length to total screw length is ...
2-in : total = 48 : 132
What are the zeros of f(x) 3x^2+9x+12
Answer:
there are no zeros in f(x)
Step-by-step explanation:
[tex]f(x)=3x^2+9x+12\\\\f(x)=0\\\\0=3x^2+9x+12\\\\[/tex]
to know if the equation has real solutions we have to know if
[tex]b^2-4ac\geq 0[/tex]
a=3
b=9
c=12
[tex]9^2-4*3*12\\\\=81-144\\\\=-63[/tex]
so there aren't real solutions
hence there aren't any zeros in f(x)
Evaluate -3 to the 2 power + (2-6)(10)
pls hurry i need help on it
Answer:
-31
Step-by-step explanation:
-3 to the power of 2 means -3*-3 and since negative multiplied by negative is positive, that will give 9
9 + (2-6)(10)
9+-4(10)
9+ -40
9-40
-31
Find a geometric power series for the function, centered at 0, by the following methods. f(x) = 7/8 + x by the technique shown in Examples 1 and 2 f (x) = sigma^infinity_ n = 0 by long division (Give the first three terms.) f (x) =
Answer:
f(x) = 7/8 + n=0 = 7/8 so the answer you looking for would be: n=0
Reedley college Math -45-50554-2020FA Exercise Problem Solving
Answer:
OK its that question
In how many ways can six people be assigned to three offices if there are two people located in each office
Answer: 504 ways
Step-by-step explanation:
given data:
no of people = 6
no of offices = 3
no of people in each office = 2
solution:
first we need to find the number of ways 6 people can be shared in 2 or pairs as this is a combination problem.
= 6C2
= 15 ways
ways to place a pair of 2 in 3 offices
= 15 * 3
= 45ways.
using the remaining 4 people we have 4C2 = 6 ways
in the remaining 2 offices
6 * 2 = 12ways
withour conditions
= 45 * 12
= 540ways
considering the constraint
= 4C2
= 6ways
shared in 3 offices
= 6 * 3
= 18 ways
remaining 2 offices
= 18 * 2
= 36 ways
Without constraints - With constraints
= 540 - 36
= 504ways
90 ways.
Given:
Six people are to be assigned in three offices, two people per office.
Thinking of this problem from the perspective of offices themselves picking persons, we get this:
Firstly out of 6 person, 2 person are chosen in [tex]^6C_2[/tex] ways.
Secondly, from rest of the 4 persons, 2 people are chosen in [tex]^4C_2[/tex] ways.
Then rest of the 2 persons are chosen from rest persons in [tex]^2C_2[/tex] ways.
Applying law of multiplication for number of ways:
Total number of ways = [tex]^6C_2 \times ^4C_2 \times ^2C_2 = 15 \times 6 \times 1 = 90[/tex]
For more information, refer this link below:
https://brainly.com/question/13003667
what is 1/4 * 32 I need help please
Answer: 8
Step-by-step explanation: Think of the 32 in this problem as 32/1.
So rewriting, we have 1/4 × 32/1.
Now, the 4 and 32 cross-cancel to 1 and 8.
So we have 8/1 or just 8.
only number 7 please, and the expression
Answer:
8n, 40 miles in 5 weeks.
Step-by-step explanation:
given that nate runs 8 miles each week.
Hence in n weeks, he will run
8 miles per week x n weeks
= 8n miles
in 5 weeks, n = 5.
Substituting this into the expression,
8(5) = 40 miles
There are 1,639 students in attendance at Auburn High School. Approximately what percentage does one student count towards the total number of students?
Answer:
0.6%
Step-by-step explanation:
1/1639 is 0.0006, and to get the percent from that just move the decimal point twice to the right.
Perform the indicated operation. y^2+3y-10/3y+15
Answer:
Step-by-step explanation:
Hello, please consider the following.
We take y different from -5, as dividing by 0 is not allowed and we can compute as below.
[tex]\dfrac{y^2+3y-10}{3y+15}=\dfrac{(y+5)(y-2)}{3y+15}\\\\=\dfrac{(y+5)(y-2)}{3(y+5)}\\\\\large \boxed{\sf \bf \ \ =\dfrac{y-2}{3} \ \ }[/tex]
Thank you
A boy owns 2 pairs of pants, 3 shirts, 3 ties, and 2 jackets. How many different outfits can the boy wear to school if each outfit must consist of one of each item
Answer:
36
Step-by-step explanation:
2 x 3 x 3 x 2 = 36
SIMPLIFY the expression
- 4(2x - 3)
Answer:
-8x + 12
Step-by-step explanation:
We can use the distributive property of multiplication which states that a(b + c) = a * b + a * c. Therefore:
-4(2x - 3)
= -4 * 2x - 4 * (-3)
= -8x + 12
Answer: -8x -12
Step-by-step explanation:
Multiply -4 by 2x getting -8x
Then Multiply -4 by 3 getting 12
Since you can't subtract 12 from -8x this is the simplest way
A farmer has a field in the shape of a triangle. The farmer has asked the manufacturing class at your school to build a metal fence for his farm. From one vertex, it is 435m to the second vertex and 656m to the third vertex. The angle between the lines of sight to the second and third vertices is 49 degrees. Calculate how much fencing he would need to enclose his entire field.
Answer:
The amount required is [tex]l_t = 1586 \ m[/tex]
Step-by-step explanation:
From the question we are told that
The length of one side is [tex]l_1 = 435 \ m[/tex]
The length of the second side is [tex]l_2 = 656 \ m[/tex]
The angle between the line of sight of second and third side is [tex]\theta = 49^o \\[/tex]
Generally using cosine rule the third side is evaluated as
[tex]l_3^2 = l_1 ^2 + l_2^2 - 2 * l_1 * l_2 cos (\theta )[/tex]
=> [tex]l_3^2 = 435 ^2 + 656^2 - 2 * 453* 656 cos (49)[/tex]
=> [tex]l_3 = 495 \ m[/tex]
The total amount of face required is mathematically evaluated as
[tex]l_t = l_1 + l_2 + l_3[/tex]
[tex]l_t = 435 + 656 + 495[/tex]
[tex]l_t = 1586 \ m[/tex]
Which of the following would be equivalent to Use the variable n as the unknown number.
Answer:
C.
Step-by-step explanation:
"Two more than three times a number is seven"
Add 2 to 3n and set it equal to 7.
The equation that represents the mentioned condition will be 3n + 2 = 7. Then the correct option is C.
How to convert the sentence into an expression?The expression is defined as the relations of the numbers and the variables combined together to form the equation by the use of mathematical algebraic symbols like equal greater than or less than.
From the statement, two more than three times a number is seven.
Let n be the number. The three times a number is then written as,
⇒ 3n
And the expression that is 2 more than 3n is written as follows:
⇒ 2 + 3n
The expression equals 7. The equation is then given as,
3n + 2 = 7
The equation that represents the mentioned condition will be 3n + 2 = 7. Then the correct option is C.
To know more about an expression follow
brainly.com/question/10606712
#SPJ2
The equation 9 x 2 − 12 x + 4 = 0 9 x 2 − 12 x + 4 = 0 has how many different solutions?
We have the equation:
[tex]9x^2-12x+4=0[/tex]
so:
[tex]a=9\qquad b=-12\qquad c=4[/tex]
and:
[tex]\Delta=b^2-4ac=(-12)^2-4\cdot9\cdot4=144-144=\boxed{0}[/tex]
This equation has one solution.
integration of 3x⁴+7x-11/x³
Answer: [tex]\dfrac{3}{2}x^{2}-\dfrac{7}{x}+\dfrac{11}{2x^2}+C[/tex]
Step-by-step explanation:
[tex]\int {\dfrac{3x^4+7x-11}{x^3}} \, dx \\\\\\= \int \bigg({\dfrac{3x^4}{x^3}} +\dfrac{7x}{x^3}+\dfrac{-11}{x^3}\bigg)\, dx\\\\\\= \int \bigg(3x+7x^{-2}-11x^{-3}\bigg)\, dx\\\\\\=\dfrac{3x^{1+1}}{1+1}+\dfrac{7x^{-2+1}}{-2+1}+\dfrac{-11x^{-3+1}}{-3+1}+C\\\\\\=\dfrac{3x^{2}}{2}+\dfrac{7x^{-1}}{-1}+\dfrac{-11x^{-2}}{-2}+C\\\\\\=\large\boxed{\dfrac{3x^{2}}{2}-\dfrac{7}{x}+\dfrac{11}{2x^2}+C}[/tex]