![HELP WHAT DOES THIS EVEN MEAN [CRY]](https://brainimage.s3.us-east-005.backblazeb2.com/contents/attachments/O3ZdmPaDb2NOduKSvkJpAayDcTqKWr9t.png)
Answers
[tex]\\ \sf\longmapsto A=πr^2[/tex]
[tex]\\ \sf\longmapsto A=3.14(5)^2[/tex]
[tex]\\ \sf\longmapsto A=3.14(25)[/tex]
[tex]\\ \sf\longmapsto A=78.5cm^2[/tex]
Related Questions
Write the sentence as an inequality. The cost of a ticket t will be no more than $52.
Answers
Answer:
t is less than or equal to $52, or t <= $52
Step-by-step explanation:
If you can't have more than $52, then use less than symbol (<). The sentence doesn't state that a ticket shouldn't cost $52, so it's safe to assume that you can have exactly $52.
consumer product manufacturers, link with customer satisfaction surveys and product warranty cars that are sent back to the company. And Outdoors company redesign the popular camping tent, and it wants to know what does the customers like the newer version rather than older one. So they include in the warranty registration of car to serve it as two questions first one of the customer on the older version of the tent and the second newest version better what variable was measured by this experiment
Answers
Answer:
sorry
Step-by-step explanation:
Use the distributive property to remove the parentheses.
-5(6u - 4w-2)
Answers
-30u + 20w + 10
Step-by-step explanation:
Answer:
-30u+20w+10
Step-by-step explanation:
multiple each term inside the parenthesis by -5. remember negative times negative = positive
i spend 3 hours a day out of a 8 hour shift, what percentage is that
Answers
Answer:
0.375 = 38%
Step-by-step explanation:
Just divide 3 from 8 and that will give you 0.375
Then you round that to the nearest one which is 38 and
that will get your percentage
Answer: 37.5%
Step-by-step explanation: I just divided 3 by 8 then once I got my answer I moved the decimal point over to the right by 2.
7/18 - 1/3 , 1/2 - 1/5 - 1/10 and 3 1/2 - 2 5/9 please help thank you
Answers
Answer:
Step-by-step explanation:
7/18=7/18
it cant be divided agian
1/3=1/3
it cant be divded agian
1/5=1/5
it cant be divded agian
1/10=1/10
it cant be divded agian
3 1/2=3/2
2 5/9 =10/9
i am not sure if this is what you wanted ...
Calculate the following and provide your answer as a rational number:
the quotient of 3/4 and −7/8
Answers
Answer:
(Can't tell if it's 3/4 plus -7/8 or you need the answer to both so I'll put both of them) 3/4 is .75 -7/8 is -.875. 3/4 + -7/8 is -1/8 which is -.125
Consumer products are required by law to contain at least as much as the amount printed on the package. For example, a bag of potato chips that is labeled as 10 ounces should contain at least 10 ounces.Assume that the standard deviation of the packaging equipment yields a bag weight standard deviation of 0.2 ounces. Assume the bag weight distribution is bell-shaped. Determine what average bag weight must be used to achieve at least 99 percent of the bags having 10 or more ounces in the bag.
Answers
Answer:
The average bag weight must be used to achieve at least 99 percent of the bags having 10 or more ounces in the bag=9.802
Step-by-step explanation:
We are given that
Standard deviation, [tex]\sigma=0.2[/tex]ounces
We have to find the average bag weight must be used to achieve at least 99 percent of the bags having 10 or more ounces in the bag.
[tex]P(x\geq 10)=0.99[/tex]
Assume the bag weight distribution is bell-shaped
Therefore,
[tex]P(\frac{x-\mu}{\sigma}\geq 10)=0.99[/tex]
We know that
[tex]z=\frac{x-\mu}{\sigma}[/tex]
Using the value of z
Now,
[tex]\frac{10-\mu}{0.2}=0.99[/tex]
[tex]10-\mu=0.99\times 0.2[/tex]
[tex]\mu=10-0.99\times 0.2[/tex]
[tex]\mu=9.802[/tex]
Hence, the average bag weight must be used to achieve at least 99 percent of the bags having 10 or more ounces in the bag=9.802
MIN-
Bill is measuring a piece of material for some curtains.
It is 215 cm wide, how many mm is this?
There are 10 mm in 1 cm.
mm
Answers
Answer:
2,150 mm
Step-by-step explanation:
If every cm is 10 mm you multiply 215 by 10. I hope this helped!
Explanation:
Let’s take away the “mm” and “cm” for now. Since 10mm = 1cm, it’s basically multiplying by 10 to the number or adding a 0 behind the number. This means that if you take 215 cm and multiply it by ten, you will get the number 2,150, which is the mm equivalent of 215 cm. You can also use this for many other equations. This is called conversion.
Hope this helps you understand!
Help pls 20 POINTS math
j/−2+7=−12
Answers
J = 38
Step-by-step explanation:
j/-2 + 7 = -12
j/-2 = -19
j = 2 • 19
j = 38
Answer:
Step-by-step explanation:
j/-2 =-12-7
j=(-19)*(-2)
j=38
A road crew must repave a road that is 2/3 miles long. They can repave 1/12 miles each hour. How long will it take the crew to repave the road?
Write your answer in simplest form.
Answers
8 hrs
Step-by-step explanation:
2/3 = 8/12
1/12 each hour
It will take 8 hours
First make both fractions have common denominators: 1/12 and 8/12
Solve the equation 8/12 = 1/12x; so x equals 1/8 meaning each hour they can repave 1/8 of the total. So the amount of hours it takes to repave the road is 8
I need two examples of Solve a proportion with a mixed number in one of its numerators. SHOW ALL WORK!!!!!!!!!!!!
Answers
Answer:
A proportion equation is something like:
[tex]\frac{A}{B} = \frac{x}{C}[/tex]
Where A, B, and C are known numbers, and we want to find the value of x.
Now we want two cases where in one of the numerators we have a mixed number, where a mixed number is something like:
1 and 1/3
which actually should be written as:
1 + 1/3
1) a random problem can be:
[tex]\frac{1 + 1/3}{4} = \frac{x}{5}[/tex]
We can see that the numerator on the left is a mixed number.
First, let's rewrite the numerator then:
1 + 1/3
we need to have the same denominator in both numbers, so we can multiply and divide by 3 the number 1:
(3/3)*1 + 1/3
3/3 + 1/3 = 4/3
now we can rewrite our equation as:
[tex]\frac{4/3}{4} = \frac{x}{5}[/tex]
now we can solve this:
[tex]\frac{4/3}{4} = \frac{4}{3*4} = \frac{x}{5} \\\\\frac{1}{3} = \frac{x}{5}[/tex]
now we can multiply both sides by 5 to get:
[tex]\frac{5}{3} = x[/tex]
Now let's look at another example, this time we will have the variable x in the denominator:
[tex]\frac{7}{12} = \frac{3 + 4/7}{x}[/tex]
We can see that we have a mixed number in one numerator.
Let's rewrite that number as a fraction:
3 + 4/7
let's multiply and divide the 3 by 7.
(7/7)*3 + 4/7
21/7 + 4/7
25/7
Then we can rewrite our equation as
[tex]\frac{7}{12} = \frac{25/7}{x}[/tex]
Now we can multiply both sides by x to get:
[tex]\frac{7}{12}*x = \frac{25}{7}[/tex]
Now we need to multiply both sides by (12/7) to get:
[tex]x = \frac{25}{7}*\frac{12}{7} = 300/49[/tex]
Calculus 3 Problem
7. Determine if the field F(x, y, z) = ye^z i + xe^z j + xy e^z k is conservative. If it is, find a potential function.
Answers
Step-by-step explanation:
Given:
[tex]\vec{\textbf{F}}(x, y, z) = ye^z\hat{\textbf{i}} + xe^z\hat{\textbf{j}} + xye^z\hat{\textbf{k}}[/tex]
A vector field is conservative if
[tex]\vec{\nabla}\textbf{×}\vec{\text{F}} = 0[/tex]
Looking at the components,
[tex]\left(\vec{\nabla}\textbf{×}\vec{\text{F}}\right)_x = \left(\dfrac{\partial F_z}{\partial y} - \dfrac{\partial F_y}{\partial z}\right)_x[/tex]
[tex]= xe^z - ye^z \neq 0[/tex]
Since the x- component is not equal to zero, then the field is not conservative so there is no scalar potential [tex]\phi[/tex].
PLEASE ANSWER I WILL GIVE BRAINLIEST FAST
Answers
Answer:
E &F
Step-by-step explanation:
The rules of a 30-60-90 Triangle is E, and F is just a different value of numbers (but the same ratio).
The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage? b) Assume that a recent survey suggests that about 87% of adults have heard of the brand.
Answers
Answer:
He must survey 123 adults.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the z-score that has a p-value of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
Assume that a recent survey suggests that about 87% of adults have heard of the brand.
This means that [tex]\pi = 0.87[/tex]
90% confidence level
So [tex]\alpha = 0.1[/tex], z is the value of Z that has a p-value of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
How many adults must he survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage?
This is n for which M = 0.05. So
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.05 = 1.645\sqrt{\frac{0.87*0.13}{n}}[/tex]
[tex]0.05\sqrt{n} = 1.645\sqrt{0.87*0.13}[/tex]
[tex]\sqrt{n} = \frac{1.645\sqrt{0.87*0.13}}{0.05}[/tex]
[tex](\sqrt{n})^2 = (\frac{1.645\sqrt{0.87*0.13}}{0.05})^2[/tex]
[tex]n = 122.4[/tex]
Rounding up:
He must survey 123 adults.
Find the perimeter and area of a square with sides 6 inches in length.
Answers
And the perimeter is 24
1
Select the correct answer.
Simplify the following expression.
우
O A.
OB. 12
Oc. 1
OD.
64
Reset
Next
Answers
Answer:
1/64
Step-by-step explanation:
4^ (-11/3) ÷ 4 ^ (-2/3)
We know a^b ÷a^c = a^(b-c)
4 ^(-11/3 - - 2/3)
4^(-11/3 +2/3)
4^(-9/3)
4^ -3
We know a^-b = 1/a^b
1/4^3
1/64
Evaluate −a2+c2 when c=−4.
Answers
Answer:
[tex]a = 4, -4[/tex]
Step-by-step explanation:
Step 1: Plug in -4 for c
[tex]-a^{2} + c^{2}[/tex]
[tex]-a^{2} + (-4)^{2}[/tex]
[tex]-a^{2} + 16[/tex]
Step 2: Solve for a
[tex]-a^{2}+16-16=0-16[/tex]
[tex]-a^{2}/-1 = -16/-1[/tex]
[tex]a^{2} = 16[/tex]
[tex]\sqrt{a^{2}} = \sqrt{16}[/tex]
[tex]a = 4, -4[/tex]
Answer: [tex]a = 4, -4[/tex]
Find the missing side lengths leave your answer as a racials simplest form
Answers
Answer:
u = 26
v = 13√3
it's 30-60-90 triangle
find the length of y, assume the triangles are similar
Answers
Answer:
y = 3.6
Step-by-step explanation:
Since the triangles are similar, we can write the following proportion:
[tex]\frac{y}{6.3} = \frac{2.4}{4.2} = \frac{2.8}{x}[/tex]
We don't need the fraction on the left because it is not necessary to solve for y. Instead, we can simplify the rest:
[tex]\frac{y}{6.3} = \frac{2.4}{4.2}[/tex]
[tex]\frac{y}{6.3} = \frac{0.4}{0.7}[/tex]
Now, we can cross-multiply:
[tex]0.7y = 6.3 * 0.4[/tex]
[tex]0.7y = 2.52[/tex]
[tex]y = 3.6[/tex]
Given:
The length of both triangle are in the same ratio,
2.4:2.8:y = 4.2:x:6.3
To find:
The value of 'y'
Steps:
Since 2.4 : y = 4.2 : 6.3, we can find the value of 'y'
2.4/y = 4.2/6.3
2.4 * 6.3 = 4.2 * y
15.12 = 4.2y
15.12/4.2 = y
3.6 = y
y = 3.6
Therefore, the value of y is 3.6
Happy to help :)
If you want help, feel free to ask
Find the mass of wire that lies along the curve , ()=(2−1)+2, 0≤≤ 1, h = (3)
Answers
Step-by-step explanation:
sorry bestie but it hard to find
(a). Find the value of log 216.
Answers
Answer:
2.334453751
Step-by-step explanation:
Press log on your Casio calculator (if you have one) and plug in 216, then close the parentheses!
The value of the expression 23 +32–3x4–52-5+(7x4) is
Answers
Answer:
24
Explanation:
(23+32)-(3×4)-(52-5)+(7×4)
(55)-(12)-(47)+(28)
55-12=43-47+28= -1943-19=246. The area of a rectangular sheet of paper is 300 cm squared. The length is 5 cm more than the width
a) If the width of the rectangle is x cm, state an expression for the length of the rectangle.
b) Write and algebraically solve a quadratic equation to determine the length and
width of the rectangle.
Answers
Answer:
Step-by-step explanation:
width = x
length= x + 5
a) x + 5
b) x * (x+5) = 300
x^2 + 5x = 300
x^2 + 5x - 300 = 0
Δ = 25 + 1200 = 1225
width = (-5 + 35)/2 = 15 cm
lenght = 15 + 5 = 20 cm
Answer:
a) length = x + 5
b) [tex]x^{2}[/tex] + 5x - 300 = 0
Step-by-step explanation:
x = width
x + 5 = length
(x)(x + 5) = 300
[tex]x^{2}[/tex] + 5x = 300
[tex]x^{2}[/tex] + 5x - 300 = 0
(x+20)(x-15)
x = -20 or x = 15 ( disregard the -20. measurements can't be negative)
width = 15
length = x+ 5 = 15+5 = 20
José corrió 3/10 Kilómetros y Juan 1/2 kilometro
¿Cuántos kilómetros corrieron entre los dos?
Answers
Answer:
3/10 + 5/10 = 8/10
8/10 kilometers
Step-by-step explanation:
Answer:
3/10+1/2=3/10+5/10
=8/10km
which of the following is equivalent to the expression 2√(9a^3b^4c)
A) 6ab^2√(ac)
B) √(18ab^2c)
C) 18abc√(a^2b^3)
D) 6a^2b^2√(ac)
Answers
Hello!
2√9a³b⁴c =
= 2 × 3ab²√ac =
= 6ab²√ac
Answer: A) 6ab²√ac
Good luck! :)
I need two examples of a decimal number to the tenths place minus a decimal number to the hundredths place. Show all work
Answers
Answer:
ok
Step-by-step explanation:
.1 - .01 = .99
.1 - .99 = .1
.4 -.03 =37
How do u determine the equation of the line through each pair of points in slope-intercept form (y=mx+b). (3,0) and (2,4) (-6,3) and (2,-2)
Answers
Answer:
Y =-4X +12
Y =-0.625X -0.75
Step-by-step explanation:
(3,0) and (2,4)....
x1 y1 x2 y2
3 0 2 4
(Y2-Y1) (4)-(0)= 4 ΔY 4
(X2-X1) (2)-(3)= -1 ΔX -1
slope= -4
B= 12
Y =-4X +12
~~~~~~~~~~~~~~~~~
(-6,3) and (2,-2)
x1 y1 x2 y2
-6 3 2 -2
(Y2-Y1) (-2)-(3)= -5 ΔY -5
(X2-X1) (2)-(-6)= 8 ΔX 8
slope= - 5/8
B= - 3/4
Y =-0.625X -0.75
Select the correct answer. This table represents a quadratic function. x y 0 -3 1 -3.75 2 -4 3 -3.75 4 -3 5 -1.75
I really need one fast
I give all my points
Answers
Answer:
1/4
Step-by-step explanation:
that is the answer
I found the constant which was -3
a = 1/4
b=-1
Answer:
the value of a in the function's equation is 1/4
Step-by-step explanation:
Plato answer
what is the sum of the angles of a triangle?
Answers
plot the following points in the number line, -1/4, 1 1/2, 0.75 (PLS ANSWER ASAP)
Answers
Answer:
-1/4 is the least, 0.75 is second, and 1 1/2 is the greatest
Step-by-step explanation:
-1/4 is the least already because it is negative.
1 1/2 is really 1.5 so now compare 0.75 and 1.5.
1.5 is bigger therefore the order is :
-1/4, 0.75, 1 1/2
