Answer:
[tex]\sqrt{12}[/tex] units
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
let x be the other leg, then
x² + 2² = 4²
x² + 4 = 16 ( subtract 4 from both sides )
x² = 12 ( take the square root of both sides )
x = [tex]\sqrt{12}[/tex] units
which can be simplified to 2[tex]\sqrt{3}[/tex] units , if required.
Find the value of k, if x + 3 is a factor of 3x² + kx + 6. *
Given:
Polynomial = P(x) = 3x² + kx + 6
Factor of the ablove polynomial = (x+3)
To Find:
Value of K, for which (x+3) become the factor of P(x) = 3x² + kx + 6
Solution :
Now,
x + 3 = 0
⇒x = (-3)
So,
As (x+3) is a factor so x = (-3) is one root of the polynomial.
Therefore,
P(-3) = 0
→ P(-3) = 3(-3)² + k(-3) + 6 = 0
→ 3(9) - 3k + 6 = 0
→ 27 - 3k + 6 = 0
→ 27 + 6 - 3k = 0
→ 33 - 3k = 0
→ - 3k = -33
→ k = -33 ÷ -3
→ k = 11
Hence,For the value of k = 11, (x+3) is a factor of 3x²+ kx + 6V E R I F I C A T I O N :3x²+ kx + 6, by putting the value of k = 11 and taking -3 as root the remainder should be zero
→ 3x²+ 11x + 6
→ 3(-3)² + 11(-3) + 6
→ 3(9) - 33 + 6
→ 27 - 33 + 6
→ 27 + 6 - 33
→ 33 - 33
→ 0
Hence verified !
Solve for x. Show your work.
(3x+2) (4x-5) find the value of x
Answer:
I think the answer is 35x⁴-10
Step-by-step explanation:
3x × 4x=12x²
3x × 5=15x
2 × 4x=8x
2 × -5=-10
15x+8x=23x²
12x²+23x²=35x⁴
35x⁴-10
HELP !!!!!!! Speed = Distance divided by Time. A Race-car traveling at 75 miles an hour for 4 hours would travel... * THIS IS A REBEMTION TEST 275 miles 300 miles 325 miles 350 miles
The table shows the width and length of different pictures that Shakira has enlarged for the school yearbook:
Enlarged Picture
2 5
4 10
6 15
Based on the table, what is the length of a picture that has a width of 18 inches?
A:36
B:38
C:45
D:90
I really need help pls and thx
Answer:
If the left column is the width then the length is 45
If the right column is width then the length is 7.2
Step-by-step explanation:
ratios
Solve. 45 + (-5) - 4 + 7
A: 45
B: 0
C: -34
D: 43
Answer:
D. 43
Step-by-step explanation:
45 + (-5) = 40
40 - 4 = 36
36 + 7 = 43
A population of bacteria doubles every 15 hours. Initially, the population of bacteria is 40. What is this population of the bacteria after 40 hours?
What is the value of 25 when z = 2?
Answer:
The question makes no sense in my opinion
Drag the tiles to the correct boxes. Not all tiles will be used.
What are the domain and the range of function f?
By undestanding the theory behind rational functions and functional theory, we conclude that the function have:
Domain: (- ∞, - 3) ∪ (- 3, + ∞)
Range: (- ∞, 0) ∪ (0, + ∞)
How to determine the domain and the range
In this question we have a rational function and we must determine its domain and range, whose elements exist if and only if the denominator evaluated at respective point is distinct of zero. Graphically speaking, the domain of the function represents the set of x-values, whereas the range represents the set of y-values.
By a graphing tool (i.e. Desmos) we construct the rational function and derive the following conclusions:
Domain: (- ∞, - 3) ∪ (- 3, + ∞)
Range: (- ∞, 0) ∪ (0, + ∞)
By undestanding the theory behind rational functions and functional theory, we conclude that the function have:
Domain: (- ∞, - 3) ∪ (- 3, + ∞)
Range: (- ∞, 0) ∪ (0, + ∞)
To learn more on rational functions: https://brainly.com/question/27914791
#SPJ1
Answer:
Range: (negative infinity, 0) U (0, 1/9) U (1/9, infinity)
Domain: (negative infinity, -3) U (-3, 6) U (6, infinity)
Step-by-step explanation:
100% on the test
A TV has an original price of $499. What is the new price after a 15% increase?
Given:
Original price of a TV = $499
Price increased by 15%.
To find:
The new price of the TV.
Solution:
According to the question,
New price of the TV = Original price + 15% of its original price.
[tex]\text{New price of the TV}=499+\dfrac{15}{100}(499)[/tex]
[tex]\text{New price of the TV}=499+74.85[/tex]
[tex]\text{New price of the TV}=573.85[/tex]
Therefore, the new price of the TV is $573.85.
Plz help correct answer gets brainliest.
whats the question?????
Answer:the question is chemistry and the sander is math
Step-by-step explanation:
what is 222.567 x 4886.88
Answer:
bro just look on a caculater
Step-by-step explanation:
1087658.22
What is this
y=3x-4
Answer:
4/3 or 1.3
Step-by-step explanation:
y= 3x-4
To find x- intercept/zero, Substuite y=0.
0= 3 x -4
Move the variable to the left-hand side and change its sign
-3x= -4
Divide both sides of the equation by -3
x= 4/3
(1.3 as a decimal)
8. Identify the domain and range to the following relations and state whether or not the relations are functions. State why or why not the relation is a function.
Domain:
Range:
Is this a function? Yes or No? Explain your answer.
Answer:
this is not a function because y-values repeat
Step-by-step explanation:
Which is a simplified form of the expression -4(3r – 2) – 2(r + 1)?
Answer:
simple
Step-by-step explanation:
-12r+8-2r+2
-14r-10
Find the coordinates of the x intercept and y intercept
Answer:To determine the x-intercept, we set y equal to zero and solve for x. Similarly, to determine the y-intercept, we set x equal to zero and solve for y. ...
To find the x-intercept, set y = 0 \displaystyle y=0 y=0.
To find the y-intercept, set x = 0 \displaystyle x=0 x=0.
answer is in there at the bottem
Step-by-step explanation:
ANOTHER QUICK ONE !!! ,
Jill drives at a rate of 50 miles per hour for 250 miles. If she plans to drive a total of 450 miles
during her trip, how many hours does she have left to drive at the same rate ?
Answer:
bsgdhv is the ghj is the most
Answer:
4 more hours.
Step-by-step explanation:
So, to calculate the remaining time Jill has to drive, we have to first find out how much distance Jill has left to cover:
[tex](450 - 250)[/tex] miles
= [tex]200[/tex] miles
So, at a rate of 50 miles per hour, Jill has to drive:
[tex]\frac{200}{50}[/tex] more hours
= [tex]4[/tex] more hours
Hope this helped!
I WILL GIVE YOU BRAINLIST HURRY
Which expression is equivalent to 3(2x+1)−(x−1)
?
A
3x+6
B
5x+2
C
5x
D
5x+4
Answer:
b
Step-by-step explanation:
3(2x+1)-(x-1)
\ / / /
5x+2
Answer:
fgcgfcgchgcchcgccghccghcgcghgghcgchchchgcgcghchgchg
Step-by-step explanation:
I Need Help Please And Thank You
A large aquarium should contain 10,000 liters of water when it is filled correctly. Fish will get sick if the aquarium gets down to 4,000 liters or less. One day over the weekend, there is an accident, and the tank cracks in 4 places, causing water to empty out of the aquarium at a rate of 20.5 liters per hour. The aquarium workers did not catch the leaks until 2 days later. How much water was left in the tank when the aquarium workers finally caught the leak? Based on the level of water, were fish sick?
Answer:
9016 litres left
Step-by-step explanation:
The fish were not sick.
You would multiply 20.5 by 48 which is the amount of hours in 2 days then subtract that amount from 10000 to see how much is left
Can someone please help me with this one
Answer:
(-2, 15), (-1, 11), (0, 7), (1, 3), (2, -1)
Step-by-step explanation:
so i just took possible x values and plugged them into the equation, and from there you can solve for y.
Joaquin lives 0.4 mile from Keith. Layla lives 0.3 as far from Keith as Joaquin.
How far does Layla live from Keith? Enter an equation to solve.
from Keith as Joaquin.
solve.
Sorry for the blurry picture I'm in a rush if anyone could help me that would be amazing
Answer:
y=1/2x
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form y/x=k or kx
The value of the constant k is equal to the value of the slope m
In this problem we have the point (8,4)
Find the value of k
y/x=k------> substitute the value of x and y
4/8=k
k=1/2
The equation is equal to
y=1/2x
Is (3, 1) a solution to the equation y = 3x?
Answer:
no
Step-by-step explanation:
it does not fall on the line
x/3a*x/4a
________
x/8a
Step-by-step explanation:
First let's simplify the upper part which is without x/8a
3a/x multiply xa/x
3a xa
__ x __
x x
x the denominator of 3a is cancelled with the x from xa the numerator.
that leaves us with
3a × a
__
x
we get 3a squared divided by x =
3a^2
____
x
now since we're dividing it with x/8a
3a^2 x
____ ÷ _____
x 8a
we change the sign ÷ to x so we flip the x/8a
3a^2 8a
_____ x ____
x x
8x3 = 24
a^2 x a = a^3
x multiply x = x^2
the final answer
24a^3
_____
x^2
i need help!! please
========================================================
Explanation:
The old dimensions of the rectangle were 30 by 15.
The new dimensions are 30+x by 15+x, where x is some positive number.
The new rectangle dimensions multiply to 1000
(30+x)(15+x) = 1000
Use the FOIL rule to expand out the left side like so
(30+x)(15+x) = 1000
450+30x+15x+x^2 = 1000
450+45x+x^2 = 1000
x^2+45x+450
Then lets get everything to one side
x^2+45x+450 = 1000
x^2+45x+450-1000 = 0
x^2+45x-550 = 0
---------------------
From here we use the quadratic formula
Plug in a = 1, b = 45, and c = -550.
[tex]x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(45)\pm\sqrt{(45)^2-4(1)(-550)}}{2(1)}\\\\x = \frac{-45\pm\sqrt{4225}}{2}\\\\[/tex]
[tex]x = \frac{-45\pm65}{2}\\\\x = \frac{-45+65}{2} \ \text{ or } \ x = \frac{-45-65}{2}\\\\x = \frac{20}{2} \ \text{ or } \ x = \frac{-110}{2}\\\\x = 10 \ \text{ or } \ x = -55\\\\[/tex]
Earlier we defined x to be a positive number. This means we ignore x = -55. It makes no sense to add on a negative amount to each dimension.
The only practical answer is x = 10.
So each dimension is increased by 10 feet.
--------------------------
If x = 10, then the old dimensions of 30 by 15 bump up to 30+10 = 40 by 15+10 = 25
Then note how 40*25 = 1000, which helps confirm we have the correct dimensions.
--------------------------
Now go back to the question at hand: we want to find the new width. The old width was 30 feet. The new width is 30+x = 30+10 = 40 feet
Draw a graph that represents y=3x+2
Answer:
See drawing below.
Step-by-step explanation:
use the equation y=3x+2 to determine points needed, by substituting in the x values of -1, 0, 1, etc.
plot points
(-1, -1)
(0, 2)
(1, 5)
Please give thanks :)
Solve for x
If you don’t know how to do it don’t answer
What is the difference between the let statements of consecutive even integers and consecutive odd integers
Answer and Step-by-step explanation:
The word, "Consecutive" means, "Back-to-back" or "One after the other." Therefore, consider these integers:
1, 2, 3, 4, 5, 6, 7, 8, . . .
If we write down these integers in such a way that only even integers follow back-to-back, we have:
2, 4, 6, 8, . . .
If we write down these integers in such a way that only odd integers follow back-to-back, we have:
1, 3, 5, 7, . . .
Since 2, 4, 6, 8, . . . Are all even integers that follow back-to-back, then this is known of consecutive even integers.
Since 1, 3, 5, 7, . . . Are all odd integers that follow back-to-back, then this is known of consecutive odd integers.
A proportional relationship can have a negative or positive unit rate.
True or False
Answer:
true :)
Step-by-step explanation:
hope this helps <3