Answers
Answer:
D. 9 + 4√5
Step-by-step explanation:
What we're essentially doing here is squaring 2 + √5. (2 + √5 and 2 + 1√5 are essentially the same)
(2 + √5)(2 + √5) (I didn't put the one on the conjugate for a reason; look above)
Step 1: Apply the distributive property by multiplying each term of 2 + √5 by 2 + √5
4 + 2√5 + 2√5 + (√5)²
Step 2: Combine 2√5 and 2√5 to get 4√5.
4 + 4√5 + (√5)²
Step 3: The square of √5 is 5.
4 + 4√5 + 5
Step 4: Add 4 and 5 to get 9.
9 + 4√5 is the final answer to this question.
Related Questions
6th grade math help me pleaseeee
Answers
Answer: 65
Step-by-step explanation:
since the square root of 8 is 64 and 65 is closest to 64
Answer:
√65
√9= 3
√17= 4,12311
√65= 8,06226
√72 =8,48528
Can someone pls help me with this?
Answers
Answer:
C
Step-by-step explanation:
Because the line is straight and the line is supposed to be going straight up
find the term to term rule for
7, 6, 8, 7, 9
Answers
Answer:
-1, +2
Step-by-step explanation:
The difference between the 1st two terms is -1, the difference between the next two is + 2, and so on
Devon has a sandbox that is 3 feet long, 3 feet wide, and } foot deep. How
many cubic feet of sand does he need to fill the sandbox completely?
HELP FASTT!!! giving brainless
Answers
Answer:
B) 5 1/4
Step-by-step explanation:
3.5x3x0.5=5.25 or 5 1/4
9. A ball is thrown into the air at an initial velocity of 18 meters per second from an initial height of 10
meters. The equation that models the path of the ball is given by h= -4.9t? +18t +10.
(A) What is the maximum height of the ball?
9a)
(B) When does the ball reach its maximum height?
9b)
(C) When does the ball hit the ground?
9c)
(D) How high is the ball at 3 seconds?
9d)
(E) When is the ball 20 meters high?
9e)
Answers
D3 secaonds answer 20 meters=1
The graph for the system of inequalities without the shading of its solution set is shown on the coordinate grid. Choose the area that would be shaded to show the solution of this system.
Answers
9514 1404 393
Answer:
(C) Area 3
Step-by-step explanation:
The first inequality has positive slope and a y-intercept of -5. The variable x has a positive coefficient so we can determine the shading from ...
x ... > 5
That is, larger values of x are in the solution set. Shading is to the right of the line with positive slope, in areas 3 and 4.
__
The second inequality has negative slope and a y-intercept of -3. Both x and y have positive coefficients, so the shading can be determined from either of ...
... 2y < -6 . . . . . . lower values of y are in the solution set
x ... < -6 . . . . . . . lower values of x are in the solution set
These indicate the shading is below and to the left of the line with negative slope, in areas 2 and 3.
__
The area that is in the solution set of both inequalities is Area 3.
PLEASE ANSWER ASAP !!!!
Answers
Answer:
Step-by-step explanation:
(3,4)(4,8)
4/1
m=4
The measurts of the angles of a triangle are shown in the figure below. Solve for x.
33°
A
Answers
Answer:
Step-by-step explanation:
Step-by-step explanation:
sum of all Δ angles = 180°
33° + 90° + x = 180°
123° + x = 180°
x = 180° - 123°
x = 57°
_________________FOLLOW MEChristian is planning a vacation and finds an airplane ticket that cost 180$. He found a promo code offering 17% off. Write a single algebraic expression that can be used to find the cost of Christian’s ticket after the discount.
Answers
Answer:
83/100 x 180
Step-by-step explanation:
We have to find the cost of the ticket after the discount.
100% - 17%= 83%
83% of the total percentage of the original price that he needs to pay.
So we do:
83/100 x 180
So, this would be the expression.
Hope this helps!:)
Rewrite the following radical expression in rational exponent form.
(√x)^5
А. x2/5
B. x5/2
C. x^2/x^5
D. (1/x^2)^5
Answers
Answer:
Step-by-step explanation:
For clarity, you need to mark exponents with ^ and parentheses.
You would write the choices A and B as x^(2/5) and x^(5/2), respectively.
Answer:
x5/2
Step-by-step explanation:
WILL MARK YOU BRAINLIEST
Answers
a table of values represents a proportional relationship when both the____and___ are_
Answers
... i think, i’m no genius lol
Find the quotient.
12a3p4 ÷ -2a2p
-6a3p5
-24ap3
-6ap3
6a5p3
Answers
Step-by-step explanation:
Given
12a³p^4 / - 2a²p
= - 6* a^3 - 2 * p^4- 1
= - 6ap³
Hope it will help :)
10x-3y=3 Can somebody find the slope for me please
Answers
Answer:
Y=-1+10/3x
Step-by-step explanation:
The slope is 10/3x and the point is -1. I think this is correct, but I’m not sure
Answer:
y=10/3
Step-by-step explanation:
10x-3y=3
-10x -10x move 10x
-3y=-10x+3
-3. -3. -3. divide
y=10/3x
A. y+2 = -4(X-8)
B. y- 8 = -4(x + 2)
C. y+ 8 = -4(x-2)
D. y-2 = -4(x+8)
PLEASE HELP AND ASAP THANKS!!!!!
Answers
[tex]y-y_1=m(x-x_1)[/tex]
Given the x1 and y1 = given point.
Substitution x1 = 2 and y1 = -8 in the equation.
[tex] \begin{cases} x_1 = 2 \\ y_1 = - 8 \end{cases} \\ y - ( - 8) = - 4(x - 2) \\ y + 8 = - 4(x - 2)[/tex]
Hence, the solution is C choice.
Answer[tex]y + 8 = - 4(x - 2)[/tex]
please help seems easy just can’t figure out the answer
Answers
Answer:
b is 125
Step-by-step explanation:
I need some help pls
Answers
Y-intercept=-4
I hope this helps you
The cost(c)of chicken varies directly as its weigth(w)equation
Answers
Answer:
[tex]c = kw[/tex]
Step-by-step explanation:
Given
c varies directly as w
Required
Write the equation
c varies directly as w.
Mathematically, this is represented as:
[tex]c\ \alpha\ w[/tex]
Convert to equation.
[tex]c = kw[/tex]
Where k is the constant of variation
y = x + 8
4x – 2y = -12
Answers
Answer:
x = 14
y = 22
Step-by-step explanation:
y = x + 8
4x - 2y = -12
Solve
_____________
Since we see that the first equation has y alone, we can substitute it into the values of y in the second equation.
4x - 2(x + 8) = -12
Distribute :
4x - (2(x) + 2(8)) = -12
4x - 2x +16 = -12
Combine like terms :
2x + 16 = -12
Subtract 16 from both sides :
2x = -28
Divide 2 from both sides to get x alone :
x = 14
Now that we know what x is, substitute it in the first equation to get y :
y = (14) + 8
y = 22
Answer:
(2 , 10) or x = 2 & y = 10
Step-by-step explanation:
y = x + 8
4x – 2y = -12
1. Substitute x + 8 in for the y in the other equation.
2. Solve for x
3. Take the solution for x and substitute the number in for the x in y = x + 8.
4. Solve for y.
5. Your answer is the result.
4x - 2(x + 8) = -12 Distributive Property
4x - 2x - 16 = -12 Combine like terms
2x - 16 = -12 Isolate the x, so start by moving -16
+ 16 +16
2x + 0 = 4 Delete the 0. It is a place holder you don't need
2x = 4 Isolate the x by dividing both terms by 2.
2 2
x = 2
y = x + 8 Substitute the 2 in for x and solve the one step equation.
y = 2 + 8
y = 10
James planted a tree in his backyard. The initial height is 5 ft tall. It grows 1/2 ft a year after that.
Answers
Answer:
New height = 11/2 ft
New height = 5 + 1/2(N)
Step-by-step explanation:
Given:
Initial height = 5 ft
Grown height = 1/2 ft
Find:
New height
Computation:
New height = Initial height + Grown height
New height = 5 + 1/2
New height = 11/2 ft
Equation;
New height = 5 + 1/2(Number of year)
New height = 5 + 1/2(N)
1
Sharon bought = kg of sugar. She used- of it to bake a cake.
2
4
How much sugar had she left?
D
Answers
Answer:
She bought 1 kg
amount used in making cake = 2/4 = 1/2
amount left with her = 1 - 1/2
==. 1/2
HELP PLZZZZZzZZzzzzzz
Answers
Answer:
43.98
Step-by-step explanation:
What is the area of this figure?
2D
5 m
write your answer using decimals. Use 3.14 for pie
___ square kilometers
Answers
Answer: i eat fooood bro
Step-by-step explanation:
What is the slope of a line which is perpendicular to the line whose equation is y=7x-5?
Answers
Answer:
-1/7
Step-by-step explanation:
I think this because the opposite of 7 is -1/7 and that is the meaning op perpendicular.
can someone tell me how to solve 8th grade slope! I'll put you as brainliest!!
Answers
Answer:
Step-by-step explanation:
Well, the formula to find slope is y2-y1 / x2-x1
Here's an example:
(2,12) (4,24)
12-24 / 2-4 =
-12/-2 or 6
You would use:
(y=mx+b) to find an entire equation, including the y intercept
Let me know if this helps, and if it doesn't, I hope I'll be able to explain it better.
a car dealerships goal is to sell a mean of 35 cars per day. In one week, it sold the following numbers of cars each day: 44 35 23 29 30 21
How many more cars would it have had to sell during the week to meet its goal?
A. 5
B. 25
C. 15
D. 35
Answers
Answer:
Step-by-step explanation:
B. 25
Add 25 to the total of 220 then divide by the 7 days to get a mean of 35 cars
Here is a right-angled triangle.
y cm
8.2 cm
12.3 cm
Work out the value of y.
Give your answer correct to 1 decimal place.
Answers
Answer:
9.1
Step-by-step explanation:
Let,
hypotenuse = 12.3 cm
perpendicular = 8.2 cm
base = y cm
(hypotenuse)^2 = (perpendicular)^2 + (base)^2
(12.3)^2 = (8.2)^2 + y^2
151.29 = 67.24 + y^2
151.29 - 67.24 = y^2
.: y^2 = 84.05
y = √84.05
y = 9.1
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answers
Answer:
C=12
Step-by-step explanation:
2x12=24
3x12=36
5x12=60
Calculate the mean of 66,73,65,60
Answers
Answer:
66
Step-by-step explanation:
The mean is the average, to find you add all the numbers up and then divide by the amount of numbers you added.
66+73+65+60 = 264
264 : 4 = 66
I hope this helps :0)
Which best defines the term empirical evidence?
evidence based on facts and figures
evidence based on emotions
evidence based on another person’s testimony
evidence based on experience and observation
Answers
Answer:
the fourth answer, hope this can help
Answer:
evidence based on experience and observation
Step-by-step explanation: 100%