Answer:
k=0 or k=9/10
Step-by-step explanation:
10k^2 - 10k- (-k) = - k- (-k)
10k^2-9k=0
k(10k-9)=0
k=0 or 10k-9=0
k=0 or k=9/10
Answer:k=(1/2,2/5)
Step-by-step explanation:
Which of the following expressions is a factor of 2x2 – 112 + 15?
Answer:
Step-by-step explanation:
where are the expressions?
PLEASE HELP!!!
Give an example showing why one of the methods is not correct.
Answer:
Brandon's methot is not correct
for example: x=9 9×1/2=4.5
Here's why:
Let's use his method to find the square root of 36. That means we multiply 36 by 1/2 = 0.5 to get 36*0.5 = 18; however, 18 is not the square root of 36. We can see that 18*18 = 324. Instead, the square root of 36 is 6 because 6*6 = 36.
As another example, let's say we want to find the square root of 64. With Brandon's method, we would get to 64*0.5 = 32, but 32*32 = 1024. Ashley's method is correct and 8*8 = 64 shows that 8 is the square root of 64.
As a visual approach, think of a square with side lengths 8 feet each. The area would be 8*8 = 64 square feet. If you didn't know the side length, but you knew that the area was 64 square feet, then you could apply the square root operation to find the side length to be 8 feet (or you could effectively use Ashley's guess-and-check method to arrive at 8 feet). In short, the square root operation is the opposite of squaring a number. We consider these inverse operations.
Multiplying by 1/2 is the same as dividing by 2. Division is the opposite of multiplication, and division is not the inverse of squaring a number. It's just a coincidence that Brandon's method happened to work on the value 4. But as shown earlier, it doesn't work in general.
What is the value of x?
A. 30
B. 42
C. 39
D. 85
Answer:
39
Step-by-step explanation:
102 + 39 + x = 180
180 - 141 = 39
39 is x
Hope this helps!
Which of the following polynomials does not have real roots?
A. x2 + x-2
B. 12x2 - 17x- 7
C. x + 5x + 6
D. x2 + x + 2
balance C4H6O3 + H2O −−→ C2H4O2
Answer:
solution given:
balanced: C4H6O3 + H2O −−→2 C2H4O2
Will give brainliest!!!
Answer:
A)36
B)100
F)25
hope it helps.
Answer:
A = 36=6²
B = 100=10²
F = 25 =5²
those are the perfect square
hope it is helpful to you
what is the definition of an expression
Answer:
the process of making known one's thoughts or feelings.
Step-by-step explanation:
Next time you ask a question please tell us if it's in a math term or something, I did it in the Ela/reading term.
the process of making known one's thoughts or feelings.
For example, if you make someone laugh their expression would be happy or suprised. Expression is just a way of seeing someones thoughts and feelings.
Hope this helps!
Have a great day!
- Hailey: )
Which set of side lengths or angle measures can be used to construct a triangle A. 50 inches, 90 inches, 35 inches B. 60 inches, 25 inches, 95 Inches C. 45,45,80 D. 60, 45,75
Answer:
D. 60, 45,75
Step-by-step explanation:
For options C and D
For a triangle the sum of the angles must always be equal to 180 degrees
So 180 ≠45+45+80
and
60 +45+ 75= 180
For option A and B
The length of the longer side is equal to the square root of the sum of squares of the other two sides in a triangle.
According to Pythagorus theorem
hypotenuse²= base² + perpendicular²
c²= a²+ b²
90²= 50² + 35²
8100= 2500+1225
8100≠3725
95²= 60²+ 25²
9025= 3600+ 625
9025≠4225
Therefore only D is the correct option
Hello struggling with this question. I need to know what are intervals in math. Please answer the question with the image.
Answer:
b
Step-by-step explanation:
When you see things that move at a non linear rate, it means that it is not a straight line. Automatically, you can eliminate A and D because the lines there between those numbers are straight. Now we have two non linear lines left and there is only one that is decreasing (going down and it is the line between -2 and 0.
Hope this helped :)
Find the surface area of this prism. Please help 20 points!!!!!
Answer:
ima say 260. .................
Answer:
umm 247
Step-by-step explanation:
Magazines are packed into cartons for distribution. Each hour one person can pack 45 cartons. How many people are needed to pack 1200 cartons
Answer:
26
Step-by-step explanation:
One person can pack 45 cartoons per hour
Therefore the number of people needed to pack 1200 cartons can be calculated as follows
= 1200/45
= 26.66
= hence 26 people are needed to pack 1200 cartoons
Antoinette Applied for a $6000 loan, which she will start paying back after the interest has accumulated. She had a initial offer for a simple annual interest rate of 6% for three years, but decided to consider other options. Which of the following options of all the crease the interest she pays the most?
F. $5500 loan, simple interest, annual rate of 6%, term of three years
G. $6000 loan, simple interest, annual rate of 5.75%, term of three years
H. $6000 loan, simple interest, annual rate of 6%, term of 2.8 years
J. $5500 loan, compound interest, annual rate of 6%, term of three years
Please Help
PLEASE HELP ME AGAINNN
Find the volume of the clinder in the terms of π
Answer:
A) 127.16π m³
Step-by-step explanation:
Volume of a cylinder:
V = πr²h
Given:
r = 3.4
h = 11
Work:
V = πr²h
V = π(3.4²)(11)
V = π(11.56)(11)
V = 127.16π
Answer:
hey bestie, its 127.16
Step-by-step explanation:
3.4 squared is 11.56
and 11.56 times 11 is 127.16
Which of the following is the standard form of (x-7)2 + (y +1)2 = 16?
Answer:
[tex](x - 7) {}^{2} + (y + 1) {}^{2} = 16 \\ this \: is \: an \: equation \: of \: circle \\ ( {x}^{2} - 14x + 49) + ( {y}^{2} + 2y + 1) = 16 \\ {x}^{2} + {y}^{2} - 14x + 2y + 50 = 16 \\ {x}^{2} {y}^{2} - 14x + 2y + 34 = 0[/tex]
PLEASE HELP, I WILL GIVE BRAINLIEST FOR THE CORRECT ANDWER!!!!!
Answer: E
Step-by-step explanation:
You have to add 2 to the other side and shade to the left because it’s less than 18.
Answer:
Letter E
Step-by-step explanation:
To solve this, all you need to do is add two to both sides to isolate the x, and that will result in x ≤ 18. In a number line, it is a closed circle (because it has the line below the sign), and it points to the left because it is less than or equal to.
Check Your Understanding Are you more likely to win a random drawing if you crinkle the paper that contains your name before putting it into the drawing box? A curious student conducted a study to investigate. The student took 100 equal sized slips of paper and crinkled 25 of them before putting them all into a box. After mixing well, they asked an uninformed person to select a winner at random. The student noted if the slip was crinkled. The slip was returned to the box, mixed well, and asked another uninformed person to select a winner at random. This process was repeated 10 times. Let Y = the number of times that a crinkled paper was selected.
Answer: hello your question to the given scenerio is missing below is the missing question
question: Does this setting represent a Binomial distribution ?
answer : Yes the setting represents a Binomial distribution
Step-by-step explanation:
The setting represents a Binomial distribution, because the criteria's for a Binomial distribution is all present which are
The random variable ( number of times a crinkled paper is picked ) is represented as Y Each sample is drawn independently and with replacement there are only two outcomes ( success or failure )Number of trials is given as 10 probability of success = 25 / 100 = 0.25yes, this setting represent the binomial distribution.
Given that,
The student took 100 equal sized slips of paper and crinkled 25 of them before putting them all into a box.
After mixing well, they asked an uninformed person to select a winner at random.
We have to determine,
Does this setting represent a Binomial distribution.
According to the question,
Let Y = the number of times that a crinkled paper was selected.
The setting represents a Binomial distribution, because the criteria's for a Binomial distribution is all present .
These are the points which represents the given representation is a binomial distribution.
The random variable ( number of times a crinkled paper is picked ) is represented as Y.
Each sample is drawn independently and with replacement.
There are only two outcomes ( success or failure ).
Number of trials is given as 10 times repeated.
The probability of the success,
[tex]Probability\ of \ success = \dfrac{25}{100} = 0.25[/tex]
Hence, yes this setting represent the binomial distribution.
To know more about the Binomial distribution click the link given below.
https://brainly.com/question/23413408
factorise x squared - 3x
Answer:
x squared -3× =x(x-3)
Step-by-step explanation:
Since the common factor is x,one comes out to multiply the other to give it x squared and since one x has been written outside already we just write the 3 so that when we multiply it we will get the answer we were asked to factorise
circumference of cylinder
Answer:
Circumference is the length around the cylinder.
Step-by-step explanation:
Also, follow Sammy Revv on Spotify
Answer:
To find the circumference of a cylinder, you have to be aware that a cylinder's cross-section is a circle. If you know the cylinder's radius: Multiply the radius by 2 to get the diameter. Multiply the result by π, or 3.14 for an estimation. That's it; you found the circumference of the cylinder.
Step-by-step explanation:
When three squares are joined at their vertices to form a right triangle, the combined area of the two smaller squares is the same as the area of the largest square. Which three squares will support this statement?
Answer:
J
Step-by-step explanation:
Area of a square = L x W
F:
(5 x 5) + (4 x 4) = 81
25 + 16 = 81
41 = 81 INCORRECT =( X
H:
64 + (5 x 5) = (13 x 13)
64 + 25 = 169
89 = 169 INCORRECT =( X
G:
(6 x 6) + (5 x 5) = (7 x 7)
36 + 25 = 49
61 = 49 INCORRECT =( X
J:
144 + (5 x 5) = 169
144 + 25 = 169
169 = 169 CORRECT =)
Solve for x LT1 10th grade level
Answer:
x = 5
Step-by-step explanation:
Because the red-marked lines are parallel, we know that the ratios are the same
5x : 45 = 20 : 36
5x/45 = 20/36
5x * 36 = 20 * 45
5x * 4 = 20 * 5
5x * 1 = 5 * 5
x = 5
help me im adding and subtracting integers plssss 40 points!!!!!! for it
Find each sum.
8 + (-1) + (-6) + 5
- 2 + 6 + (-3) + (-4)
Use a number line to find each difference.
7 - 4
3 - 8
- 2 - (-3)
- 1 - (-1)
- 4 - 3
81 - 106
43 - (-21)
- 25 - (-57)
17 - 18 - (-81)
- 18 - 13 - 12
23 - (-18) - (-54)
16 - 28 - (-38)
Answer and Step-by-step explanation:
Simply just adding and subtracting.
8 - 1 - 6 + 5 = 6
-2 + 6 - 3 - 4 = -3
-- 4 is 3 away from 7. The answer is positive 3.
-- The answer is negative 5.
-- The answer is positive 1.
-- The answer is 0.
-- The answer is negative 7.
-- The answer is -25.
-- The answer is 64.
-- The answer is 32.
-- The answer is 80.
-- The answer is -43.
-- The answer is 95.
-- The answer is 26
#teamtrees #PAW (Plant And Water)
Determine if the number when converted to a decimal will result in a repeating or terminating decimal
5 divided by 10
Fig. A shows a paper cup in the shape of an inverted right circular cone. Its base radius is 4 cm and its slant height is 8.5 cm.
(a) Find the capacity of the paper cup.
(b) The paper cup is cut along PQ to form the sector in Fig. B. Find
(i) the area of the sector,
(ii) the angle of the sector.
(a)
Height of the cup
= [tex]\sqrt{ {8.5}^{2} - {4}^{2} }[/tex]
= 7.5 cm
The capacity of the cup
= [tex] \frac{1}{3} \times \pi \times {4}^{2} \times 7.5[/tex]
= 126 cm³ (cor. to 3 sig. fig.)
(b)(i)
The area of the sector
= [tex]\pi \times 4 \times 8.5[/tex]
= 107 cm² (cor. to 3 sig. fig.)
Can you help me for (b)(ii)?
9514 1404 393
Answer:
16π/17 radians ≈ 169.41°
Step-by-step explanation:
The arc length of the sector is the circumference of the cone:
C = 2πr = 2π(4 cm) = 8π cm
The angle and arc length are related by ...
s = rθ . . . . . θ in radians
8π cm = (8.5 cm)θ
θ = 8π/8.5 = 16π/17 . . . . radians
bii) The angle of the sector is 16π/17 radians ≈ 169.41°.
Answer:
169° (3sf)
Step-by-step explanation:
the area of a circle multiplied by the angle over 360 gives you ans.
x/360 × π × r²=34π -> ur ans frm part i
x × π(8.5²)=12240π
x × 72.25=12240
x=169.41°
Please please please help me
Answer:
D. 17
Step-by-step explanation:
1. Set up an equation (2x + 5) + (3x + 10) = 100
2. 2x + 3x= 5x and 5 + 10 = 15
3. The equation simplified 5x + 15 = 100
4. Move the 15 to the other side of the equation. 5x = 100 - 15
5. 5x = 85
6. Finally, divide 85/5
7. Our final answer is 17.
Pls pls pls pls pls help me I’m not sure Which one
Answer:
Step-by-step explanation:
-2.1 is negative
-2.0 is negative
-8.7 is negative
-6.3 is negative
4.5 is positive
hey another one so sorry T^T
Answer and Step-by-step explanation:
-6 and -10 are the answers.
This is because these numbers are less than -5, so they would work when plugged in for h in the inequality.
#teamtrees #PAW (Plant And Water)
Answer:
-6 and -10
Step-by-step explanation:
-6 and -10 are both less than -5, hope this helps :)
Can someone help me with this??? Please I don’t understand
Answer:
You need to use the angles as a waypoint such as the one opposite b is equal to b then you need to use the angles on a straight line
Step-by-step explanation:
Answer:
∠A= 111.75°
Step-by-step explanation:
Please see the attached picture.
∠B +∠C= 180° (adj ∠s on a str. line)
(x +35)° +∠C= 180°
∠C= 180° -(x +35)°
∠C= 145° -x°
∠A= ∠C (corr. ∠s)
∠A= 145° -x°
Given that ∠A is (3x +12)°, equate this expression to the expression we found.
145° -x°= 3x° +12°
3x° +x°= 145° -12°
4x°= 133°
x°= 133° ÷4 (÷4 on both sides)
x°= 33.25°
Substitute the value of x back into the expression for ∠A:
∴∠A= 3(33.25°) +12°
∠A= 111.75°
Please help i know this is kind of easy but I am having a hard time with it unfortunately
Answer:
x=2
Step-by-step explanation:
Answer:
x=2
Step-by-step explanation:
if x^3 is = 8, then
x= ∛8
∛8 = 2
x=2
to check
2*2*2= 8
Whats the área and circumference of a circle if the radius is 6in?
Answer:
C≈37.7in
Step-by-step explanation:
Answer:
Hello!
Area: 113.04
Circumference: 37.68
Hope this helps