A 20-inch television screen has a width of 12 inches. What is the length of the television screen?
Please help I’ll give brainliest if you answer all :)
Step-by-step explanation:
a^2 +b^2 = c^2
b^2 = c^2 - a^2
3 - solving for h
A = bh
h = A ÷h
4 - solving for r
I = prt
r = I÷ pt
5- solving for b
A= 1/2 bh
can rewrite as
A = bh ÷2
b = 2A ÷ h
Could someone please help me? Thank you and explain the work because I don’t get this
Answer:
5.59 times per second.
Step-by-step explanation:
Direct variation is in the form:
[tex]y=kx[/tex]
Where k is the constant of variation.
Inverse variation is in the form:
[tex]\displaystyle y=\frac{k}{x}[/tex]
In the given problem, the frequency of a vibrating guitar string varies inversely as its length. In other words, using f for frequency and l for length:
[tex]\displaystyle f=\frac{k}{\ell}[/tex]
We can solve for the constant of variation. We know that the frequency f is 4.3 when the length is 0.65 meters long. Thus:
[tex]\displaystyle 4.3=\frac{k}{0.65}[/tex]
Solve for k:
[tex]k=4.3(0.65)=2.795[/tex]
So, our equation becomes:
[tex]\displaystyle f=\frac{2.795}{\ell}[/tex]
Then when the length is 0.5 meters, the frequency will be:
[tex]\displaystyle f=\frac{2.795}{.5}=5.59\text{ times per second.}[/tex]
Help please will give brainlist!!!
MODELING REAL LIFE The equation y=2x + 3 represents the cost y(in dollars) of mailing a package that weighs x pounds.
a. Use a graph to estimate how much costs to mail the package.
b. Use the equation to find exactly how much it costs to mail the package.
It costs $ to mail the package.
Answer:
I can't read the weight of the package due to the image quality, could you type it out please.
Solve for x. Please I am a little lost on this one .
Answer:
10
Step-by-step explanation:
Hello,
I believe this is the explanation of this problem. If not, anyone else is free to correct me on this.
Look at the line segment passes through the center and is divided into 8 and 4. Since this line segment passes through the center of the circle, this is the diameter and is equal to 12 simply by adding 8 and 4..
Let's look at the next segment. It passes through the center as well, so it must have the same diameter. After all, the circle has the same diameter no matter what as long as the segment passes through the center.
You have the length of one part of that segment, which is 2. Subtract it from 12, the diameter you got from the other segment, and the answer is 10.
Hope this helps!
Find the area of the trapezoid. Leave your answer in simplest radical form.
5 cm
Not drawn to scale
A.
94.5 cm
B.
31.5 cm
c.
7 cm
D.
81 cm
Answer:
A)94.5 cm
Step-by-step explanation:
height = 9cm
Base 1 = 5cm
Area of a Trapezoid = 1/2 × (b1 + b2)h
h = 9cm
b1 = 5cm
b2 = (9 cm + 5cm + 2cm) = 16cm.
Area of Trapezoid
= 1/2 (5 + 16) × 9
= 1/2 × 21 × 9
= 94.5 cm
Option A is the correct answer
Find the area of the rectangle.
Answer:
Step-by-step explanation:
the area of the rectangle is : -7y² ( -2y^4+y²-1)
14y^6-7y^4+7y² unit
what is the domain of the function
Answer:
hi sh Sheet sh I monorailg Jericho improve Odom Ybor
PLEASE HELP!!!!! (screenshot)
Answer:
The answer is A. y <= -3x + 3
A quality control expert at a pretzel factory took a random sample of 101010 bags from a production run of over 500500500 bags and measured the amount of pretzels in each bag in the sample. The sample data were roughly symmetric with a mean of 450, and a standard deviation of 15
Based on this sample, which of the following is a 90%, percent confidence interval for the mean amount of pretzels per bag (in grams) in this production run?
Answer:
H0:μ=440 g
Ha:μ does not equal 440 g
Step-by-step explanation:
kahn
The 90% confidence interval for the mean amount of pretzels per bag (in grams) in this production run for this case is [441.31, 458.69] approximately.
How to calculate confidence interval for population mean for small sample?If the sample size is given to be n < 30, then for finding the confidence interval for mean of population from this small sample, we use t-statistic.
Let the sample mean given as [tex]\overline{x}[/tex] andThe sample standard deviation s, andThe sample size = n, and The level of significance = [tex]\alpha[/tex]Then, we get the confidence interval in between the limits
[tex]\overline{x} \pm t_{\alpha/2}\times \dfrac{s}{\sqrt{n}}[/tex]
where [tex]t_{\alpha/2}[/tex] is the critical value of 't' that can be found online or from tabulated values of critical value for specific level of significance and degree of freedom n - 1.
For this case, we're provided;
The sample mean given as [tex]\overline{x}[/tex] = 450The sample standard deviation s = 15The sample size = n = 10The level of significance = [tex]\alpha[/tex] = 100 - 90% = 10% = 0.1The critical value of t at level of significance 0.1 iand at degree of freedom 10-1=9 is:
Thus, the confidence interval in between the limits
[tex]450 \pm 1.833 \times \dfrac{15}{\sqrt{10}}[/tex]
or
[tex]450 \pm 8.69[/tex] approximately or 441.31 to 458.69 or we write it as: [441.31, 458.69] approximately.
Thus, the 90% confidence interval for the mean amount of pretzels per bag (in grams) in this production run for this case is [441.31, 458.69] approximately.
Learn more about confidence interval of population for small sample here:
https://brainly.com/question/13073610
Calculate the volume of a cube with side lengths of 2.8 yards.
Answer:
21.952 [tex]yards^{3}[/tex]
Step-by-step explanation:
The volume of a cube is side length cubed.
So [tex]2.8^{3}[/tex] = 21.952
The number of peopie that have "liked" Mindy's Candy Store web
site can be represented by y = 270(1.65), where t is the number of weeks after a
review in a national magazine. Interpret the parameters of the equation. Make a
prediction about the future number of likes on the web site.
Answer:
Kindly check explanation
Step-by-step explanation:
Given that, the number of people who liked Mindy's website is given by :
270(1.65)^t ; t = number of weeks after a review
Interpreting the equation :
The equation represents an exponential growth function :
y = a(1 + r)^t
a = initial amount ; r = growth rate ; t = period
Comparing the function with the equation given ;
270 = a = number of people who liked the website before the review
1 + r = 1.65
r = 1.65 - 1
r = 0.65 ; 0.65 * 100% = 65%
Site grew at a rate of 65% per week after review
Ther predicted number of likes 2 weeks after the review :
y = 270(1.65)^2
y = 270 * 2.7225
y = 735.075
Hence, number of likes after 2 weeks = 735
A cardboard box is shaped like a cube. The length of each face is 15 inches what is the volume of the box in cube inches
Answer:
3375 in³
Step-by-step explanation:
Volume of a cube = a³ ; where a = edge of the cube
Length of each face = edge of cube = 15 inches
Volume of cube = 15³
Volume of cube = 15 inch * 15 inch * 15 inch
Volume of cube = 3375 in³
4x - 2y can be simplified as ____________
Answer:
4x - 2y can be simplified as 2(2x - y)
can someone help me I’m stuck on this and can’t figure it out
Answer:
20%
Step-by-step explanation:
Answer:
20%
Step-by-step explanation:
19.99 - 3.998(20%) = 15.992 which when rounded is 15.99
Write an expression that can be used to find the length of JH and an expression that can be used to find the length of GJ.
Answer: JH = 9 sin(35)
not sure about GH...
Step-by-step explanation:
The ratio of opposite side of the triangle hypotenuse side of triangle is equal to sine of angle.
The expression required to fine the length of GJ is,
[tex]\sin 35=\dfrac{GJ}{9}\\[/tex]
The length of the [tex]GJ[/tex] is 5.162 units.
What is right angle triangle?A right angle triangle is the triangle in which measure of one of the angle is equal to the 90 degrees.
The ratio of opposite side of the triangle hypotenuse side of triangle is equal to sine of angle.
Given information-
In the given triangle shown in the figure,
[tex]\angle JGH=35[/tex]
The angle [tex]\angle HJG[/tex] is right angle, which is equal to the 90 degrees.
As the sum of all the angles of a triangle is equal to the 180 degrees. Thus,
[tex]\angle JGH+\angle HJG+\angle GHJ=180\\[/tex]
Put the values,
[tex]35+90+\angle GHJ=180\\125+\angle GHJ=180\\\angle GHJ=180-125\\\angle GHJ=55[/tex]
In the given triangle, the side [tex]GJ[/tex] is the opposite side of the triangle and [tex]GH[/tex] is the hypotenuse side of the triangle.
Thus the length of the [tex]GJ[/tex] for the right triangle can be given as,
[tex]\sin 35=\dfrac{GJ}{9}\\[/tex]
This is the required expression,
[tex]GJ=\sin 35\times9\\GJ=0.574\times9\\GJ=5.162[/tex]
Thus the length of the [tex]GJ[/tex]5.162 units.
The expression required to fine the length of GJ is,
[tex]\sin 35=\dfrac{GJ}{9}\\[/tex]
The length of the [tex]GJ[/tex]5.162 units.
Learn more about the sides of a right triangle here;
https://brainly.com/question/14517390
66666666 help me plz plz plz
Answer:
XY would also be 7 centimeters which is answer D.
Step-by-step explanation:
This is a parallelogram, meaning that the adjacent sides are congruent. As well, the triangles making up the figure are congruent, so it makes sense that XY would also equal 7 centimeters.
Can you help me please thank you
here are the options
∠2and∠4
∠1and∠5
∠3and∠6
Answer:
∠1and∠5
Step-by-step explanation:
Hello There!
The image shown below shows an example of what corresponding angles look like
Properties of corresponding angles
Must be on the same side of the transversalMust be congruentangles 2 and 4 are on the same side of the transversal however they are supplementary angles not congruent
angles 2 and 4 are an example of adjacent angles therefore this is not the answer
angles 1 and 5 are on the same side of the transversal and they are most definitely congruent
This might be our answer but lets check the last answer just to be sure
Angles 3 and 6 are congruent but they are not on the same side of the transversal
angles 3 and 6 are an example of alternate interior angles therefore this is not the correct answer
So we can conclude that angles 1 and 5 are corresponding angles
Last year, Jackson bought a brand new car for $47,500. If the car depreciates in value by 20% each year, what will the car be worth when it is 8 years old?
Answer:
exponential growth or exponential decay , and what ... The value of a car purchased for $20,000 decreases ... population, P, increases by 20%each year,
Kenzie will save 15% if she opens a credit card. She wants to buy a jacket for $120. How much will she save if she opens a credit card?
Answer:
i think its 102 or 120-18
Step-by-step explanation:
i think cauee 10% of 120 is 12 and half of ten percent is 5 and 5% is 6
Answer:
she will save $18
Step-by-step explanation:
find 10% of the number. then find 5%. add the two answers together and you get $18.
10% of $120 = $12
5% of $120 = $6. (half 10%)
$12 + $6 = $ 18
Solve the following equation for x.
Answer:
If you just solve normally, you will get x=2 and x=-3. But if you plug these in to check your work, you will find that they are wrong. Your answer is no solution
Step-by-step explanation:
ln(2x+3)+ln(x-2)=ln(x^2-2x)
Rule: log(a) + log(b) = log(a*b)
ln( (2x+3)(x-2) ) = ln(x^2-2x)
Rule: If log(a) = log(b) then a = b
(2x+3)(x-2) = x^2 - 2x
2x^2-x-6=x^2-2x
x^2+x-6=0
Using Quadratic Formula:
x = 2 and x = -3
But, plugging these numbers back into the original equation is false!
1.Mike buys an item with a price of $15 and uses a 10% off coupon. How much does he save by using this coupon?
Answer:
14.31
Step-by-step explanation:
A spinner is divided into 8 equal sections: 4 red, 2 white, 1 green, and 1 blue. What is the probability that the spinner lands on blue or white?
Answer:
3/8
Step-by-step explanation:
Total = 8
Probability of blue: 1/8
Probabiity of white: 2/8
Probbility of blue AND white:
1/8 + 2/8
3/8
Answer:
3/8
Step-by-step explanation:
because there are 3 possbile places the spinner can go, and that there are 8 sections, the answer is 3/8
Find an expression to represent the area of the triangle below.
Answer:
[tex] A = \dfrac{8x}{3x + 1} [/tex]
Step-by-step explanation:
[tex]A = \dfrac{bh}{2}[/tex]
[tex] A = \dfrac{16x^2}{9x^2 - 1} \times \dfrac{6x^2 - 5x + 1}{2x^2 - x} \times \dfrac{1}{2} [/tex]
[tex] A = \dfrac{(16x^2)(6x^2 - 5x + 1)}{2(9x^2 - 1)(2x^2 - x)} [/tex]
[tex] A = \dfrac{(16x^2)(2x - 1)(3x - 1)}{2(3x - 1)(3x + 1)(x)(2x - 1)} [/tex]
[tex] A = \dfrac{8x}{3x + 1} [/tex]
Ethan makes punch by mixing orange juice with
sparkling water. He uses the same ratio of orange juice
to sparkling water each time he makes punch. The table
shows some of the amounts of orange juice and
sparkling water he uses for different amounts of punch.
Orange Juice (fl oz) 7 21 28 ?
Sparkling Water (fl oz) 4 12 16 28
If Ethan uses 28 fl oz of sparkling water, how much orange juice will he use and what will be the total amount of punch?
Use the number pad to enter your answers in the boxes.
Ethan will use ____
fl oz of orange juice, and he will have a total of ___
fl oz of punch.
Answer:
Ethan will use 49
fl oz of orange juice, and he will have a total of 77
fl oz of punch.
Step-by-step explanation:
He uses a ratio of 7 to 4 of orange juice to sparkling water.
7/4 = ?/28
4 * ? = 7 * 28
Divide both sides by 4.
? = 7 * 7
? = 49
He will use 49 fl oz of orange juice.
The total amount made is: 49 fl oz + 28 fl oz = 77 fl oz
Answer:
Ethan will use 49
fl oz of orange juice, and he will have a total of 77
fl oz of punch.
NEED HELP ASAP!!! At a movie theater, the price of 2 adult tickets and 4 child tickets is $48. The price of 5 adult tickets and 2 child tickets is $64.
Let x be the cost of an adult ticket and let y be the cost of a child ticket. Write and solve a system of equations to find the ticket price for one adult and for one child.
Answer:
Step-by-step explanation:
2x+4y=48
5x+2y=64
Adult ticket: $10 Child ticket: $7
For 2 adults and 3 children with the given price per ticket, the family having brought $40 as a budget, their budget would not be high enough as the total would come to be $41. They'd be a dollar short.
it takes 6 hours to travel 372 miles. How long will it take to travel 279 miles?
Answer:
4 hours and a half. 4 hours and 30 minutes
Step-by-step explanation:
Answer:
4hrs 30 minutes
Step-by-step explanation:
6hrs = 372miles
372 ÷ 6 = 62
1hr = 62 miles
62 x 4hrs = 248 miles
You need to 279 miles. 0.5 = 30 minutes.
please help! no links please!
The value of x is: 75°
360° - 128° - 85° - 72° = 75°
An ounce is equal to about 28 g. If 1 g of soil contains 2.5 billion bacteria, how many bacteria are in 1 oz of soil?
Answer:
About 700 billion bacteria
Step-by-step explanation:
Given
[tex]1oz \approx 28g[/tex]
[tex]1g = 25\ billion\ bacteria[/tex]
Required
Number of bacteria in 1 oz
[tex]1g = 25\ billion\ bacteria[/tex]
Multiply both sides by 28
[tex]28 * 1g = 25\ billion\ bacteria * 28[/tex]
[tex]28g = 700\ billion\ bacteria[/tex]
Recall that
[tex]1oz \approx 28g[/tex]
This means:
[tex]1oz \approx 700\ billion\ bacteria[/tex]