Answers
Answer:
I think it C
Step-by-step explanation:
Let's solve your equation step-by-step.
(k−4)2=9
Step 1: Simplify both sides of the equation.
k2−8k+16=9
Step 2: Subtract 9 from both sides.
k2−8k+16−9=9−9
k2−8k+7=0
Step 3: Factor left side of equation.
(k−1)(k−7)=0
Step 4: Set factors equal to 0.
k−1=0 or k−7=0
k=1 or k=7
Answer:
k=1 or k=7
Hope this helps! :)
Square both sides:
K -4 = sqrt(9)
With the answer being a square root rewrite with a postive and negative value:
K-4 = sqrt(9)
And
K-4 = -sqrt(9)
Simplify each:
K-4 = 3
And
K-4 = -3
Solving for k in each one you get answer
C. {1,7}
Related Questions
Read the excerpt from "Pilgrim at Tinker Creek The sharks disappeared as each wave rolled toward me then a new wave would swell above i scorpions in amber, sharks that roiled and heaved. Which answer best describes how the word roiled affects this excerpt? It demonstrates that the sharks are wiggling playfully in the water lt illustrates that the sharks are swaying gently. lt suggests that the sharks are moving violently. lt shows that the sharks are swimming in unison.
Answers
Answer:
Read the excerpt from "Pilgrim at Tinker Creek."
The sharks disappeared as each wave rolled toward me; then a new wave would swell above the horizon, containing in it, like scorpions in amber, sharks that roiled and heaved.
Which answer best describes how the word roiled affects this excerpt?
It shows that the sharks are swimming in unison.
It demonstrates that the sharks are wiggling playfully in the water.
It illustrates that the sharks are swaying gently.
It suggests that the sharks are moving violently.
Step-by-step explanation:
i took the test it is not c
Will Give Brainliest
Let x2+8x=7 .
What values make an equivalent number sentence after completing the square?
Enter your answers in the boxes.
x2+8x+ ? = ?
Answers
Answer:
4/6
Step-by-step explanation:
im smart trust
please help easy 10 points
Answers
Isaac walks 8 km north and then 12 km east. How far is Isaac from his starting point?
Answers
Answer:
Step-by-step explanation:
Distance from starting point = 8 + 12 = 20km
ok screw it i need to sneep i can't even do simple addition its too late
sorry
-cheesetoasty
Find the area of the trapezoid, I will give brainlist. If you can please explain how you got the answer
Answers
Answer:
36 sq inches
Step-by-step explanation:
bases are the two parallel sides -- 8" and 4"
height is perpendicular to the base -- 6"
formula for area of a trapezoid: A = 1/2h·(sum of bases)
A = 1/2(6)(8 + 4)
A = 3(12)
A = 36 sq inches
The circumference of a circle is?
Answers
Answer:
B?
Step-by-step explanation:
Because you know
diameter is answered into the radius then you divide by 2 if your doing a semi circle, but it's demonstrating that you can change it? I DUNNO HOW TO EXPLAIN, but i would go with B!
Can someone please help me!!!
Answers
Answer: x=20
Step-by-step explanation:
If im wrong, sorry
The angles of a triangle add up to 180 degrees.
(3x+5)+(2x+17)+(2x+18)=180
add the ones alike
3x + 2x + 2x=7x
5+17+18=40
so, 7x+40=180
we need to get the variable by itself so we take away 40 first by subtracting it from both sides of the equal sign
7x=140
we take away 7 from x by dividing it- opposite of multiplication is division
x=20
Answer:
x = 20
Step-by-step explanation:
3x+5° + 2x+18° + 2x+17° = 180° (sum of interior angles in a triangle is 180°)
collect like terms
3x + 2x + 2x + 5° + 18° + 17° = 180°
7x + 40° = 180°
solving for x
x = (180 - 40)/7
x = 140/7
x = 20
Each hour, every person who knows a rumor tells two other people. If one person starts the rumor, then after the first hour, three people know the rumor. The next hour, those three people each tell two more people. After eight hours, how many people will know the rumor? You do not have to include units in your answer. (I've asked this question before but the answer I got was 384 and it was incorrect)
Answers
Answer:
64
Step-by-step explanation:
In this problem n is 6 which represents the sixth and final hour of the period. Therefore gn = g6.
g1 = 2 which is the first value in the sequence which corresponds to the first hour where 2 people know the rumor.
r = the common ratio is 2, because each successive hour the people who know the rumor doubles... {2, 4, 8...}.
Substitute into equation: g6 = 2 x 26-1 = 2 x 25 = 2 x 32 = 64 Answer is 64.
HELPP. Mary and Frank have two bags in front of them. Mary's bag has 4 marbles; blue, yellow, red
and green. Frank's bag has 3 marbles; purple, orange, and pink. They will pick from their bag
at the same time. What is the probability of Mary selecting red from her bag and Frank selecting
purple from his bag?
AND CAN SOMEONE EXPLAINING HOW THEY GOT THE ANSWER
Answers
Answer: 1/12 is the answer
Step-by-step explanation: 3 , 4
1 of those colors so , 1/3 x 1/4 = 1/12!!
i hope that helps <3
Divide (x^3 - 4x^2 - 2x -5) by (x-5)
Answers
Answer:
Quotient = x² + x + 3
Reminder = 10
Step-by-step explanation:
We need to divide , x³ - 4x² - 2x - 5 by x - 5
x - 5) x³ - 4x² - 2x - 5 ( x² + x + 3
- x³ -(+)5 x²
_______________
0 + x² - 2x - 5
x² -5x
__________________
0 +3x - 5
+3x -15
__________________
+10
Identify all integers less than -14.
Answers
Answer:
An integer is a whole number that can be either greater than 0, called positive, or less than 0, called negative.
Step-by-step explanation:
Answer:
-28, -19, -18, -15,
Step-by-step explanation Cause -14 is more closer to 0 then all 4 of those negative numbers so that mean all 4 of these negative numbers are greater than -14 :) if that makes sense
!~Brainliest IF YOU CAN SIMPLIFY AND SOLVE FOR THE UNKNOWN~!(3 + 5)² + [8 - 11] + Z = 4(Z - 2)
Answers
Answer:
z=23
Step-by-step explanation:
hope this helps! :)
An equation is shown below:
BRAINLEST
8(2x – 14) + 13 = 4x – 27
Part A: Write the steps you will use to solve the equation, and explain each step. (6 points)
Part B: What value of x makes the equation true? (4 points)
Answers
Answer:
Answer in explanation section
Step-by-step explanation:
8(2x-14)+13=4x-27. Given
16x-112+13=4x-27. Distributive property
16x-99=4x-27. Simplify
14x-99=-27. subtract
14x=72. Subtract
x=36/7. Divide to get x
find the perimeter and area of the shape based on the information provided
Answers
Answer:
If you were to attach the shape, I could help.
Find the area of the regular polygon. Round to the nearest tenth if
necessary.
7.5
5.1
Answers
Answer:
that will be 25 if you put 30 in the thing
Please answer the question above
Answers
Answer: 15.4 m
Step-by-step explanation:
The area of a parallelgoram is:
A = bh,
where b is the base and h is the height.
We know that the base is 7.7 meters, and the height is 2 meters, so we can substitute:
A = 7.7 (2)
A = 15.4 m
Hope this helps! :)
Solve the problem.
Some dogs were playing in
the park. Seven more dogs
ran over. Then there were
nine dogs. How many dogs
were in the park before?
Answers
Answer:
2 dogs
Step-by-step explanation:
2 dogs at 1st plus 7 dogs added equals 9
yall i need help rn please
Answers
Answer:
D
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
If y = 1/2x, then y will always be half of x.
Can any of these get round to the Nearest tenth
Answers
Answer:
They both can First=1,885 second=628.3
Step-by-step explanation:
Answer:
Yes, I belive so. For the first one (1.884.95592), you have to round them starting with the lowest place number and work your way up.
i really need help please
Answers
Answer:
a = 4, x = 1
Step-by-step explanation:
The opposite sides of a parallelogram are congruent , then
WX = YZ , that is
a² + 5a = 5a + 16 ( subtract 5a from both sides )
a² = 16 ( take the square root of both sides )
a = ± [tex]\sqrt{16}[/tex] = ± 4
Since a > 0 , then a = 4
Also
XY = WZ , that is
x² + 6x = 4x + 3 ( subtract 4x + 3 from both sides )
x² + 2x - 3 = 0 ← in standard form
(x + 3)(x - 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x - 1 = 0 ⇒ x = 1
Since x > 0 , then x = 1
Which of the following equations has the steepest slope?
a) y= 2/3 x+ 4
b) y = 2/5 x + 2
c) y = 3/2 x + 5
d) y = 1/2 x + 1
Answers
All the real numbers have reciprocal except
Answers
Hope this helps!
Three friends share 1/4 pan of brownies what fraction of the whole pan of brownies does each friend get
Answers
Answer:
1/12
Step-by-step explanation:
1/4 ÷ 3 = 1/4 x 1/3 = 1/12
Can someone plz help me
Answers
Answer:
I would say 32 but I'm so sorry if it's wrong
the ratio of dog to cats in the shelter was 4 to 6 if there were 12 cats how many dogs would there be
Answers
Answer:
8 dogs
Step-by-step explanation:
If there were 6 cats, there would be 4 dogs. Since there is double that amount of cats, then we just double the amount of dogs from 4 to 8, our final answer.
I would appreciate Brainliest but no worries.
Jacob has a rectangular garden with an area of 56 square feet.The length of the garden is 8 feet.What is the width if the garden?
Answers
Answer:
The width of the garden is 7 feet.
Step-by-step explanation:
If the area is 56 feet, and the length is 8 feet, we can put this into the area equation.
Area = width * length
A = wl
Substitute variables.
56 = 8w
Divide by 8.
7 = w, or w = 7.
The width of the garden is 7 feet.
I need help on these Math questions ASAP. Sorry if I come off as annoying. I don't understand these questions and I've researched everything. They've been overdue for about a week now. Sorry.
Answers
Answer:
Ok
Step-by-step explanation:
find the surface area of the following cylinder. Round your answers to the nearest tenth.
Answers
Answer:
233
Step-by-step explanation:
2=33=2=
The area of a triangle is 36 cm square. Give three possible sets of dimensions for the triangle and explain whether or not you can also give the triangles' side length.
Answers
Answer:
[tex]Base = 6cm[/tex] and [tex]Height = 12cm[/tex]
[tex]Base = 4cm[/tex] and [tex]Height = 18cm[/tex]
[tex]Base = 9cm[/tex] and [tex]Height = 8cm[/tex]
Step-by-step explanation:
Given
Shape: Triangle
[tex]Area = 36cm^2[/tex]
Solving (a): Three possible dimensions
The area of a triangle is:
[tex]Area = 0.5 * Base * Height[/tex]
Let: [tex]Base = 6cm[/tex]
So, we have:
[tex]36= 0.5 * 6* Height[/tex]
[tex]36= 3* Height[/tex]
Solve for Height
[tex]12 = Height[/tex]
[tex]Height = 12[/tex]
So, a possible dimension is: [tex]Base = 6cm[/tex] and [tex]Height = 12cm[/tex]
Let: [tex]Base = 4cm[/tex]
So, we have:
[tex]36= 0.5 * 4* Height[/tex]
[tex]36= 2* Height[/tex]
Solve for Height
[tex]18 = Height[/tex]
[tex]Height = 18[/tex]
So, a possible dimension is: [tex]Base = 4cm[/tex] and [tex]Height = 18cm[/tex]
Let: [tex]Base = 9cm[/tex]
So, we have:
[tex]36= 0.5 * 9* Height[/tex]
[tex]36= 4.5* Height[/tex]
Solve for Height
[tex]8 = Height[/tex]
[tex]Height = 8[/tex]
So, a possible dimension is: [tex]Base = 9cm[/tex] and [tex]Height = 8cm[/tex]
So, the three possible dimensions are:
[tex]Base = 6cm[/tex] and [tex]Height = 12cm[/tex]
[tex]Base = 4cm[/tex] and [tex]Height = 18cm[/tex]
[tex]Base = 9cm[/tex] and [tex]Height = 8cm[/tex]
Solving (b): Can the side lengths be given
We can only determine the base and the height of the triangle, the third side length can not be determined using the available information
Find the shaded area, please help ty (Geometry)
Answers
Answer:
The area of whole square is 396 sq mm
the area of triangle = 99
396 - 99 = 297 sq mm
Answer - 297