If √x=9 then the value of x is 81.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The given equation is √x=9
Square root of x is equal to nine.
We need to find the value of x.
√x=9
Apply square on both sides
(√x)²=9²
The root and square will be cancelled on the left side
x=9²
Nine to the power of 2 is eighty one
x=81
Hence, the value of x is 81 when √x=9
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Dear people, If you ask a difficult question, please give more points. Some difficult sums don't deserve only 5 points. Don't be STINGY !!! Thank you
Answer:
Lol why are you right about this?
Step-by-step explanation:
Answer:
Agreed.
Step-by-step explanation:
I agree with you bro. Spend hours answering and researching a question, and all I get is a measly 5 points. COME ONE Y'ALL!!
Also, there are a few grammatical errors in your letter. I'm not sure if I should point that out or not, because I thought that part was in the question, so...
Also, are we even supposed to answer this question?????
(PLEASE MARK ME AS BRAINLIEST)
In one hour on a
certain street, 65% of the
cars passed were black.
Write 65% as a decimal.
Answer:
Step-by-step explanation:
0.65
What is the midpoint of AB?
Answer:
[tex](-4, -\frac{1}{2})[/tex]
Step-by-step explanation:
Hi there!
We are given the line segment, with the end points AB
The coordinates of A are (-5, -4), and the coordinates of B are (-3, 3).
We want to find the midpoint of the line segment AB
The midpoint formula is given as [tex](\frac{x_1+ x_2}{2}, \frac{y_1 + y_2}{2})[/tex], where [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex] are coordinates
We have two coordinates, which is what we need, but let's label their values to avoid any confusion:
[tex]x_1=-5\\y_1=-4\\x_2=-3\\y_2=3[/tex]
Now substitute those values into the formula:
[tex](\frac{x_1+ x_2}{2}, \frac{y_1 + y_2}{2})[/tex]
[tex](\frac{-5+ -3}{2}, \frac{-4+ 3}{2})[/tex]
Now simplify the numerator and denominator
[tex](\frac{-8}{2}, \frac{-1}{2})[/tex]
Simplify again:
The midpoint is (-4, [tex]-\frac{1}{2}[/tex])
Hope this helps!
Find the value for a for which 3y - ax = 8 and 4x + 8y = 2 are perpendicular.
Step-by-step explanation:
3y+8y=11y and -ax+4x=4ax
Answer:
a = 6
Step-by-step explanation:
Perpendicular lines have slope that are negative reciprocal of each other. There product = -1
Solve both equations for y.
3y - ax = 8 4x + 8y = 2
3y = ax + 8 8y = -4x + 2
y = ax/3 + 8/3 y = -4x/8 + 2/8
y = a/3(x) + 8/3 y = -1/2(x) + 1/4
Now you know that the slope of y = -1/2(x)+ 1/4 is -1/2
and the slope of y = a/3(x) + 8/3 is a/3.
Looking for the value of "a" that will make the lines perpendicular.
You know that one line slope is -1/2 so the other line slope is 2 because the slope are negative reciprocal. Also remember that the slope is the coefficient of the x term.
Now a/3 = 2 ; a = 6
Compare these two functions, where the input variable represents days.
f(t) = 35(3)^t
t: 0, 1, 2, 3, 4
g(t): 70, 105, 140, 175, 210
What is the difference between the function’s values on Day 1?
A.) 0
B.) 35
C.) 70
D.) 105
Answer:
c.) 70
# carry on learning
All of the following are true statements except
O 1561 = 56
0 -156] = 56
01-56] = 56
0 -156] = -56
Answer:
01-56] = 56
Step-by-step explanation:
#CarryOnLearning
8j - k + 14 when j = 0.25 and k= 1
Hello There!
All we must do is plug in the numbers and solve:
8(0.25)-1=14=2-1+14=1+14=15
Hope it helps
PLEASE HELP ITS MATH THANK YOUUUU
Answer:
Step-by-step explanation: First you need way to subt or something that’s the first thing to figure out the if its 5+10=15 ofc 10-5=5 and 10/5=2
Answer 14 super easy pleeeeaaase help
Answer:
change in vertical / change in horizontal
4 / 18 = 2 / 9
Given f (x) = x2 + 6x + 5 and g(x) = x3 + x2 − 4x − 4, find the domain of f over g of x period
{x ∈ ℝ}
{x ∈ ℝ| x ≠ −5}
{x ∈ ℝ| x ≠ −1, −2, 2}
{x ∈ ℝ| x ≠ −2, 2}
The main limiting issue with the domain this function is potentially picking an x-value that makes that denominator equal 0, because dividing by 0 is bad.
So, the domain will be all real numbers, except for those that make g(x)=0.
g(-1) = 0, g(-2)=0, and g(2) = 0, so -1, -2, and 2 must be excluded from the domain.
Your answer is {x ∈ ℝ| x ≠ −1, −2, 2}.
Answer:
[tex]\textsf{Domain}: \quad \{ x \in \mathbb{R}\;|\;x \neq -1, -2, 2\}[/tex]
Step-by-step explanation:
Given functions:
[tex]\begin{cases} f(x)=x^2+6x+5\\g(x)=x^3+x^2-4x-4\end{cases}[/tex]
Factor function f(x):
[tex]\begin{aligned}\implies f(x)&= x^2+6x+5\\&=x^2+x+5x+5\\&=x(x+1)+5(x+1)\\&=(x+5)(x+1)\end{aligned}[/tex]
Factor function g(x):
[tex]\begin{aligned}\implies g(x)&=x^3+x^2-4x-4\\&=(x+1)(x^2-4)\\&=(x+1)(x+2)(x-2)\end{aligned}[/tex]
Therefore the composite function is:
[tex]\implies \dfrac{f(x)}{g(x)}=\dfrac{(x+5)(x+1)}{(x+1)(x+2)(x-2)}[/tex]
A rational function is undefined when the denominator equals zero.
Therefore, the given composite function is undefined when (x+1)(x+2)(x-2)=0:
[tex]x+1=0 \implies x=-1[/tex][tex]x+2=0 \implies x=-2[/tex][tex]x-2=0 \implies x=2[/tex]The domain of a function is the set of all possible input values (x-values).
Therefore, as the composite function is undefined when x = -1, x = -2 and x = 2, the domain is:
[tex]\{ x \in \mathbb{R}\;|\;x \neq -1, -2, 2\}[/tex]Help help help help help
Answer:
sorry I don't no the answer
June has 42 sports books,85 mystery books and 69 nature books. She arranges her books equally on 7 shelves.How many books are on each shelf
Answer:
28
Step-by-step explanation:
42 sports 85 mystery 69 nature and 7 shelves add all up and divide by 7
A 6000-seat theater has tickets for sale at $27 and $40 How many tickets should be sold at each price for a sellout performance to generate a total revenue of 5188,000?
The number of tickets for sale at $27 should be
Using a system of equation, the Number of tickets sold at $27 is - 380615
Let :
Number of $27 tickets = a Number of $40 tickets = ba + b = 6000 - - - - (1)
27a + 40b = 5188000 - - - - - (2)
From (1) :
b = 6000 - a - - - - - - (3)Put (3) in (2)
27a + 40(6000 - a) = 5188000
27a + 240000 - 40a = 5188000
-13a = 5188000 - 240000
-13a = 4948000
a = -380615
Kindly check the question as it might contain an error.
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A class has 9 boys and 18 girls. The class as a whole has a GPA (grade point average of 2.96, and the boys have a GPA of 2.40. What is the GPA of the girls? (Round your answer to two
decimal places
9514 1404 393
Answer:
3.24
Step-by-step explanation:
The weighted average GPA is ...
(9(2.40) +18g)/(9+18) = 2.96
Then the girls' GPA (g) is ...
((27)(2.96)-9(2.40))/18 = g = 58.32/18 = 3.24
The GPA of the girls in the class is 3.24.
_____
Additional comment
The solution expression can be rearranged to ...
((9+18)(2.96) -(9)(2.40))/18 = g
2.96 +(9/18)(2.96 -2.40) = g
2.96 +(1/2)(0.56) = g
That is, the difference of the boys' GPA from the overall average, multiplied by the ratio of boys to girls, is the amount that must be added to the overall average to get the girls' GPA. This is arithmetic you can do in your head.
The key idea with the average is that the sum of differences from the average is zero. If 9 boys each have a GPA 0.56 units below the average, then twice as many girls will each have a GPA that is half as much above the average.
PLS HELP WILL MARK BRAINLIEST!! TY
Step-by-step explanation:
[tex]\angle{1} = 77°[/tex] because they are vertical angles.
The 77°-angle is supplementary with [tex]\angle{2}[/tex] therefore
[tex]77° + \angle{2} = 180° \Rightarrow \angle{2} =180° -77° = 103°[/tex]
[tex]\angle{3}[/tex] and [tex]\angle{2}[/tex] are vertical angles so
[tex]\angle{3} = \angle{2} = 103°[/tex]
Answer:
103 = angle 3
103 = angle 2
angle 1 = 77
Step-by-step explanation:
angle 1 = 77
angle 2 = angle 3
360 - 77x2 = 206
206/2 = 103
5x + 2y, when x = 5 and y = -2
Answer:
5x+2y
x=5
y=-2
then putting value of x and y in the equation
we get,
5*5+2*(-2)
=25-4
=21
If i= √-1 , what is the value of i^3
A. -1
B. i
C. 1
D. -i
Answer:
The choice D. – i
Step-by-step explanation:
[tex]i \times i \times i = \sqrt{ - 1} \times \sqrt{ - 1} \times \sqrt{ - 1} \\ = - 1 \times \sqrt{ - 1} \\ = - i[/tex]
I hope I helped you^_^
Trusted car rental charges a fee of 20$
Answer:
okay ?
Step-by-step explanation:
you have to say the question
Find the amplitude of y = -2 sin x. (2 points) Group of answer choices -2π 2π 2
Answer:
amplitude=2
Step-by-step explanation:
The amplitude of this sine wave is 2 denoted by the coefficient -2 in front of the sin(x). The negative of the coefficient denotes that the sine wave is the opposite of the standard sine wave.
Put these numbers in order from greatest to least. 27/30, -7, 15/25
Answer:
27/30, 15/25, -7
Step-by-step explanation:
id k common sense
what is the 6th therm of the sequence 8, 21, 34, 47?
Answer:
60
Step-by-step explanation:
Each number is increasing by 13. Add 13 to 47 and you get 60.
A basketball team played six games and those games the team won by seven points lost by 20 one by eight one by 11 lost by 3 and one by nine which was the meaning amount by each the team won or lost over a six game
Answer: 2
Step-by-step explanation 7 - 20 + 8 + 11 - 3 + 9 = 12 divided by 6 because there are 6 numbers equals 2
What is the value of g(-4)?
See image
Answer:
Step-by-step explanation:
[tex]\lim_{8x \to \infty} 9_y=10[/tex]
28. Find the volume of a cube measuring 8.10 cm on each
edge. (V = e, where e is the length of each edge.)
Answer:
531.44100
Step-by-step explanation:
A cube volume is V = x^3
Here x = 8.10
8.10*8.10*8.10 = 531.44100
Write an expression for the perimeter of the triangle shown below:
A). 4.5x + 29
B). 4.1x − 29
C). 4.5x − 29
D). 4.1x + 29
Which list shows the contestants in order by their completion times from fastest to slowest?
Answer:
Leah, Reba, Alexis, Kari
For the function g(x)=2x−8/ 6x+6, evaluate g(2)
Answer:
see it it is right
Answer:
-2/9
Step-by-step explanation:
Explain why solving a system of equations using graphing is not a useful solution technique?
Answer:
solving a system of equations using graphing is not a useful solution technique because you are plotting on a 2D surface. For example, if you graph the system below, you get the following graph. ... While you can approximate the solution to this system, you cannot say exactly where the intersection point is since it does not fall on integer values on the number lines.
can someone help me with question 6,7 I don’t really get it!
[tex] \frac{13}{16} x - \frac{3}{8} x = \frac{2}{5} + \frac{3}{10} \\ = > \frac{13x - 6x}{16} = \frac{4 + 3}{10} \\ = > \frac{7x}{16} = \frac{7}{10} \\ = > x = \frac{7}{10} \times \frac{16}{7} \\ = > x = \frac{16}{10} \\ = > x = \frac{8}{5} [/tex]
[tex]s = \frac{2x + t}{r} \\ = > rs = 2x + t \\ = > rs - t = 2x \\ x = \frac{rs - t}{2} [/tex]
You buy vegan shredded cheese in 5 lb bags. Your recipe for burritos requires 3 ounces of vegan cheese per serving. How many servings can you make per 5 lb bag?
The 26.66 servings you can, make per 5 lb bag if recipe for burritos requires 3 ounces of vegan cheese per serving.
What is unit conversion?It is defined as the conversion from one quantity unit to another quantity unit followed by the process of division, multiplication by a conversion factor.
We have:
You buy vegan shredded cheese in 5 lb bags.
1 lb = 16 ounces
5 lb = 80 ounces
Recipe for burritos requires 3 ounces of vegan cheese per serving.
1 → 3
x → 80
x is the number of serving
x = 80/3 = 26.66
Thus, the 26.66 servings you can, make per 5 lb bag if recipe for burritos requires 3 ounces of vegan cheese per serving.
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Answer:
27
Step-by-step explanation: