The question is incomplete.Here is the complete question.
The load that can be supported by a rectangular beam varies jointly as the width of the beam and the square of its length, and inversely as the length of the beam. A beam 13 feet long, with a width of 6 inches and a height of 4 inches can support a maximum load of 800 pounds. If a similar board has a width of 8 inches and a height of 7 inches, how long must it be to support 1300 pounds?
Answer: It must be 392 inches or approximately 33 feet.
Step-by-step explanation: According to the question, the measures (width, length and height) of a beam and the weight it supports are in a relation of proportionality, i.e., if divided, the result is a constant.
For the first load:
width = 6in
height = 4in
length = 13ft or 156in
weight = 800lbs
Then, constant will be:
[tex]\frac{6.4^{2}}{156} k = 800[/tex]
[tex]k=\frac{800.156}{96}[/tex]
k = 1300
For the similar beam:
[tex]\frac{8.7^{2}}{L}1300=1300[/tex]
L = 49.8
L = 392in or 32.8ft
A similar board will support 1300lbs if it has 392 inches or 32.8 feet long.
fhdryyyyyyyyyyyyetttttttttt
Answer:
fjkn QLJKFnclqnmjfn,msfjv
Step-by-step explanation:
Answer:
jsoanjcisnzocisjsncjhsjakznc aknxosjz
Step-by-step explanation:
hajxkfj snksksnc
Find the value of ƒ(5) if
Answer:
A) 19
Step-by-step explanation:
3(5) + 4 = 19
Hope this helps you
Answer:
19
/ 2(5)-7 = 10-7 = 3 . 3 <= 1 false
F(5)
\ 3(5)+4 = 15+4 + 19 . 19 > 0 true
IS MY ANSWER CORRECT ?? ASA IS THE WRONG ANSWER BTW
Answer:
yes
Step-by-step explanation:
A tv is 37 inches long and the width is 12 inches how tall is the tv?
Answer:
35 inches
I hope this helps!
Keith receives $25000 salary for working as a account. If keith spends 40% of his salary on expenses each year, then how much money does Keith have to spend on expenses? Round your answer to the nearest whole number if necessary.
Answer:
$25000 * 40% = 100.000
Step-by-step explanation:
A triangle has a base of 4 inches and a height of 12 inches. What is the area of the triangle?
Answer:
48Step-by-step explanation:
u just multiply 12x4=48Answer:
The area of the triangle is 24.
Robert bought some gifts that were each worth $25.90 at a store. He also bought one treat for himself that cost $4.00.
If Robert bought three gifts, which equation shows how to calculate the total amount of money he spent at the store?
A.3 x 25.90 +4= 89.70
B. O 3 x 25.90 +4= 81.70
C.3 x (25.90 + 4) = 89. 70
D.O3 (25.90 + 4) = 81. 70
Answer:
A
Step-by-step explanation:
Since Roberto bought 3 gifts, which are each $25.90, that would mean it would be 3×25.90. Plus, he bought himself a treat would would be a +4.
A rancher has 1000 feet of fencing in which to construct adjacent, equally sized rectangular pens. What dimensions should these pens have to maximize the enclosed area?
Answer:
The dimensions that will maximize the enclosed area of the pen is 250 ft by 250 ft
Step-by-step explanation:
we have the perimeter as 1000
So the sum of the lengths will be
1000/2 = 500
The dimensions that will maximize these pens will be such that they will have equal values
Mathematically, that will be 500/2 = 250 by 250
A stock price is $100. Volatility is estimated to be 20% per year. What is the an estimate of the standard deviation of the change in the stock price in one week?
Answer: if I’m correct the answer is $0.38
Step-by-step explanation:
The estimate of the standard deviation of the change in the stock price in one week is $2.77.
What is the standard deviation?It is defined as the measure of data disbursement, It gives an idea about how much is the data spread out.
We have:
Stock price = $100
Volatility = 20% ⇒ 0.20
We know the standard deviation of change in the stock price is given by:
[tex]\rm = \frac{stock \ price \times implied \ volatility \times \sqrt{days \ to \ change} }{\sqrt{365} }[/tex]
[tex]\rm = \frac{100\times 0.20\times\sqrt{7} }{\sqrt{365} }[/tex] (1 week = 7 days)
= 5.2343×0.20×2.646
= 2.7699 ≈ $2.77
Thus, the estimate of the standard deviation of the change in the stock price in one week is $2.77.
Learn more about the standard deviation here:
brainly.com/question/12402189
Combine like terms: -4x+3-7x-8
Answer:
Basicly you just combine the terms that are the same. Combine -4x and -7x. Also combine 3 with -8.
Step-by-step explanation:
Which graph represents a linear function
Answer:
A
Step-by-step explanation:
Answer:
The first Picture
Step-by-step explanation:
It is the only one with a staight line.
Can i have brainliest
Which equation represents the graph?
Answer:
The answer is A) y+4 =3(x+3)
Step-by-step explanation:
The slope is the rate of change, which you can see from the graph is m = 3/1 = 3.
Your options are given in point-slope form:
y-y1=m(x-x1)
Pick a point from the graph. I used;
(-3, -4). Now plug this into your point slope form equation.
y-(-4) = 3(x-(-3))
y+4=3(x+3)
whats 10000x1? Im an ideot,
Answer:
10000
Step-by-step explanation:
LOL its ok :)
Answer:
10000
Step-by-step explanation:
When we multiply two numbers, the answer we get is called 'product'. The number of objects in each group is called 'multiplicand,' and the number of such equal groups is called 'multiplier'. In math, to multiply means to add equal groups. ... The two factors and the product are parts of a multiplication problem. In the multiplication problem, 6 × 9 = 54, the numbers 6 and 9 are the factors, while the number 54 is the product. The four basic mathematical operations--addition, subtraction, multiplication, and division--have application even in the most advanced mathematical theories. Thus, mastering them is one of the keys to progressing in an understanding of math and, specifically, of algebra.
:D
Brainliest?
Which inequality is shown in the graph below?
Answer:
B. y<2x-2
Step-by-step explanation:
Hope that helps!
For the function f defined by f(x) = x - 2, what is the value of f(7)? А 2 B 5 C 7 D 9
Answer:
f(7) =5
Step-by-step explanation:
f(x) = x - 2
f(7) means let x = 7
f(7) = 7-2
f(7) =5
Answer:
B. 5
Step-by-step explanation:
f(x) = x - 2 when x = 7
f(7) = 7 - 2
f(7) = 5
Best of Luck!
A teacher keeps track of the number of students that participate at least three times in an optional study session each year. He models the attendance over the last nine years with this function. n(t) = 3.53t^2 - 33.04t + 117.56 Which graph would most likely be associated with the given model?
Answer:
its B
Step-by-step explanation:
The graph that would most likely be associated with the given model is an option(b).
What is a graph?A graph contains data of which input maps to which output.
Analysis of this leads to the relations which were used to make it.
The regression equation is:
n(t) = 3.53t^2 - 33.04t + 117.56
The above regression equation is a quadratic function and non-linear.
thus, the graph must represent a non-linear relationship.
From the graphs, the only graph of the option (b) represents a quadratic function.
Other given options are either linear models or exponential.
Hence, the graph that would most likely be associated with the given model is an option(b).
Read more about regression models at:
https://brainly.com/question/18469538
#SPJ2
What is 5 and 3/4 times 7 in fractions
Answer:[tex]\frac{161}{4}[/tex]
Step-by-step explanation:
I need help with this!
Answer:
9/20
Step-by-step explanation:
3/8 - 4/5 - 3/8 + 5/4
-16/20 + 25/20
-16 + 25/20
9/20
Answer: The answer is 9/20.
Step-by-step explanation:
Micro Knowledge sells 5 times as many computers as Morse Electronics. The difference in sales between the two stores is 20 computers. How many computers did each store sell?
Answer:
Morse electronics sells 5 computers
Micro knowledge sells 25 computers
Step-by-step explanation:
The computation is shown below:
Let us assume the morse electronics computer be x
So the micro knowledge computers be 5x
And, the difference between them is 20
Now the equation is
5 x - x = 20
4x = 20
x = 5
Hence, the morse electronics sells 5 computers
While on the other hand the micro knowledge sells
= 5 × 5
= 25 computers
Need help with homework
Answer: A is (8.5,4) B is (2.5,1.5)
Step-by-step explanation:
What is 0.00000387 in scientific notation? A. 0.387 × 10–7 B. 3.87 × 10–6 C. 3.87 × 106 D. 387 × 10–8]
Answer:
C
Step-by-step explanation:
What is the rat pop in 1990?
What does the model predict the rat pop was in the year 2005?
Answer:
Pop in 1990 = 81 million rats
Pop in 2005 = 127 million rats
Step-by-step explanation:
Given the function, the population of rats in 1990 is when we replace t with "0" which strictly gives the coefficient 81 that represents 81 million rats.
The rat population in 2005 is given by the formula when t = 15
This is: approximately 127 million rats.
Find the value of y in the given parallelogram
Answer:
Y = 5
Step-by-step explanation:
first you subtract 5y from 9y to get 4y, then you add 13 to 7 to get 20, and then you divide 4 and 20 for your answer.
A certain lottery requires players to select 7 different numbers, in any order, from 1 to 51 inclusive. How many different sets of 7 numbers can be chosen?
Answer:
[tex]Selection = 345025251[/tex]
Step-by-step explanation:
Given
[tex]Total = 51[/tex]
[tex]Numbers = 7[/tex]
Required
Determine number of selection
It's important that
- The first number can be any of the 51 numbers
- The second number can be any of the 51 numbers
- The third number can be any of the 51 numbers
- The fourth number can be any of the 51 numbers
And so on
Hence, number of selections is:
[tex]Selection = 51 * 51 * 51 * 51 * 51[/tex]
[tex]Selection = 51^5[/tex]
[tex]Selection = 345025251[/tex] ways
George claims that he is 3 years less than 3 times as old as his niece Pam will be one year from now. Let p= Pam’s age now. Write an expression to represent George's age. Then simplify the expression. If George is 42 years old now, how old will Pam be next year?
Answer:
G = George's age
G = 3(P+1) - 3
G = 3P + 3 - 3
G = 3P
Step-by-step explanation:
A local sorority sold hot dogs and bratwursts at the spring fling picnics. The first day they sold 8 dozen hotdogs and 13 dozen bratwursts for $330.00. The second day they sold 10 dozen hot dogs and 15 dozen bratwursts for a total of $390.00 how much did each cost?
Answer:
Hotdogs are $12.00 for the dozen or $1.00 each
Bratwursts are $18.00 for the dozen or $1.50 each
Step-by-step explanation:
Find the length of JL
15
None of the other answers are correct
12
3
Answer:
D: 12
Step-by-step explanation:
The entire segment KI is composed of the segments KJ and JI. So:
[tex]KI=KJ+JI[/tex]
We know that KI is 15.
KJ is (2x-15) and JI is (2x-6). Substitute:
[tex]15=(2x-15)+(2x-6)[/tex]
Solve for x. Combine like terms:
[tex]15=4x-21[/tex]
Add 21 to both sides:
[tex]4x=36[/tex]
Hence, the value of x is:
[tex]x=9[/tex]
We know that JI is 2x-6.
We will substitute 9 for x to find JI. So:
[tex]JI=2(9)-6=18-6=12[/tex]
Hence, our answer is D.
-2/3 x 3/4
Please help!
Answer:
-1/2
Step-by-step explanation:
Answer:
-9/8.
Step-by-step explanation:
-3/2 * 3/4
= -3*3 / 2*4
= -9/8.
A waterfall has a height of 1700 feet. A pebble is thrown upward from the top of the falls with an initial velocity of feet per second. The height of the pebble h in feet after t seconds is given by the equation h=-16t^2+24t+1700 . How long after the pebble is thrown will it hit the ground?
PLEASE HELPPPPP
Answer:
[tex]t = 11.085[/tex]
Step-by-step explanation:
The expression is given as:
[tex]h=-16t^2+24t+1700[/tex]
Required
Determine how long it will hit the ground
When the pebble is on the ground, this implies that h = 0
So, we have that:
[tex]h=-16t^2+24t+1700[/tex] becomes
[tex]0=-16t^2+24t+1700[/tex]
Reorder
[tex]-16t^2+24t+1700 = 0[/tex]
Multiply through by -1
[tex]16t^2-24t-1700 = 0[/tex]
Solve using quadratic formula [tex]ax^2 + bx + c = 0[/tex]:
[tex]t = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}[/tex]
Where
[tex]a = 16[/tex] [tex]b = -24[/tex] [tex]c = -1700[/tex]
So, we have:
[tex]t = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}[/tex]
[tex]t = \frac{-(-24) \± \sqrt{(-24)^2 - 4*16*(-1700)}}{2*16}[/tex]
[tex]t = \frac{24 \± \sqrt{576 + 108800}}{32}[/tex]
[tex]t = \frac{24 \± \sqrt{109376}}{32}[/tex]
[tex]t = \frac{24 \± 330.72}{32}[/tex]
[tex]t = \frac{24 + 330.72}{32}[/tex] or [tex]t = \frac{24 - 330.72}{32}[/tex]
[tex]t = \frac{354.72}{32}[/tex] or [tex]t = \frac{-306.72}{32}[/tex]
[tex]t = 11.085[/tex] or [tex]t = -9.585[/tex]
But time can't be negative.
So: [tex]t = 11.085[/tex]
Hence, it will take 11.085 seconds to hit the ground
I need help with this one
Answer:
22%of 2346 is 516.12 which would be 516 persons