Answer:
the problem is 1/7x+1/8?
line passes through points (-1,-2) and (1,4). What is the equation of the line?
Write the linear equation
Answer: y=3x+1
Step-by-step explanation:
First find slope using formula
m= y2–y1/x2–x1
m= 4– (—2)/ 1— (—1)
m= 3
So,
y= mx+b
y=3x+b. Using (1,4) plug into equation of a line
4= 3(1)+b
4 – 3= b
1= b. So,
y=3x+1
Answer:
y= 3x+1.
Step-by-step explanation:
(-1,-2) and (1,4)
x1 = -1
x2= 1
y1= -2
y2=4
y - y1= (y2 - y1)
______ ( x - x1)
(x2 - x1)
y- (-2)=(4-(-2))
_____ (x- (-1))
(1-(-1))
y+2= 4+2
___ (x+1)
1+1
y+2= 6
_ (x + 1)
2
y+2=3(x+1)
y+2=3x+3
y=3x+1.
Please help me with this:
A teacher decorated her classroom with 3 times as many balloons as paper fans. She used 12 fewer streamers than twice the number of paper fans. If the teacher had a total of 120 balloons, paper fans, and streamers, how many of each kind of decoration did she use?
Answer:
She used 22 paper fans, 66 balloons, and 32 streamers.
Step-by-step explanation:
In order to solve this problem, we need to find out the value of the paper fans. Because we need to find out the balloon amount, which is 3 times as much. The amount of streamers is 12 fewer than two times. We can't find it out just yet since we don't know the value of the paper fans. To find it out:
First, let's call the amount of paper fan as "x".
Then, we need to find out the amount of balloons. It is 3 times x. Which is the same as 3x.
The equation is now x + 3x + (?) = 120
We need to find out the amount of the (?).
So, to do that, it says the value is 12 fewer than 2 times the value of x. (x, because it is the amount of paper fans.)
It should be 2x-12.
Now, the equation is x+3x+2x-12=120.
Once we solve it, we know "x" is 22.
Now, we can multiply 3 by 22. Which is 66.
Then we can multiply 22 by 2, which is 44, and subtract 12, which is 32.
To double check, 22 + 44 + 32 = 120.
That's your answer!
Answer:
Step-by-step explanation:
its 22, and 66, and 32
1/5*5=
Plz help and hurry it grade recovery
Answer:
1
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
You're welcome!
The City of Irvine upgraded a bicycle lane in a section of road to have a physical barrier between the cyclists as opposed to just a painted white line on the road. They now want to do a study to see if the bicycle lane upgrades have encouraged more people to utilize the bike lane. Before the upgrade, on any given day, it was known that the section of road saw an average of 350 unique cyclists. After the upgrade, they took a random sample of 35 days in the year and counted the number of unique cyclists each day. The average was 405 cyclists with a standard deviation of 25. Test the hypothesis at the 0.05 significance level.
Answer:
The p-value of the test is 0 < 0.05, which means that there is significant evidence to conclude that more people utilize the bike lane after the change.
Step-by-step explanation:
Before the upgrade, on any given day, it was known that the section of road saw an average of 350 unique cyclists. Test if more people are using now.
At the null hypothesis, we test if the same number of people is still using, that is, the mean is 350. So
[tex]H_0: \mu = 350[/tex]
At the alternate hypothesis, we test if this mean increased, that is:
[tex]H_1: \mu > 350[/tex]
The test statistic is:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.
350 is tested at the null hypothesis:
This means that [tex]\mu = 350[/tex]
After the upgrade, they took a random sample of 35 days in the year and counted the number of unique cyclists each day. The average was 405 cyclists with a standard deviation of 25.
This means that [tex]n = 35, X = 405, s = 25[/tex].
Test statistic:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]t = \frac{405 - 350}{\frac{25}{\sqrt{35}}}[/tex]
[tex]t = 13.02[/tex]
P-value of the test and decision:
The p-value of the test is the probability of finding a sample mean above 405, which is a right-tailed test with t = 13.02 and 35 - 1 = 34 degrees of freedom.
Using a t-distribution calculator, this probability is of 0.
The p-value of the test is 0 < 0.05, which means that there is significant evidence to conclude that more people utilize the bike lane after the change.
A photo of an ant in a science book is increased to 645% as large as the actual size. If the ant is 18 millimeters, what is the size of the ant in the photo?
What is the value of the expression of x=5 6x^3 +8x
Answer:
790
Step-by-step explanation:
Substitute the value (x = 5) into the following expression, replace the parameter (x) with the value (5) wherever the parameter (x) is present,
[tex]6x^3+8x[/tex]
[tex]6(5)^3+8(5)[/tex]
Simplify use the order of operations. The order to operations is the system of steps that one uses to solve an equation, these steps are the following,
1. Parenthesis
2. Exponents or Radicals
3. Multiplication or Division
4. Addition or subtraction
Quick note, a number to any exponent is equal to the number times itself the number of times the exponent indicates.
Use these steps to simplify the given expression,
[tex]6(5)^3+8(5)\\\\=6(125)+8(5)\\\\=750+40\\\\=790[/tex]
What is the slope of a line perpendicular to the line whose equation is x - y = 6. Fully simplify your answer.
Answer:
-1
Step-by-step explanation:
first put the equation in slop int form:
y= x-6
to find the slope of a line that is perpendicular take the negative reciprical of the slope
so the answer is
-x
Worth 10 please help
Answer:
b,c and A
Step-by-step explanation:
Answer:
Honestly I dont really know
Step-by-step explanation:
What is the end behavior for the equation y= -2x^3+1
I think the answer is y= -6x + 1
x2 - 49 = 0 solve in factored form
Answer:
x = -7 or 7
Step-by-step explanation:
x² - 49 = 0
→ Factorise
( x + 7 ) ( x - 7 )
→ Solve
x = -7 or 7
Answer:
(x + 7) (x - 7) = 0
x + 7 = 0 and x - 7 = 0
So, x = +7 and -7
Hope this helps!
A set of books sits on a shelf at a store. This line plot
shows the thickness of each book. Amelie buys the
thickest book on the shelf. Raj buys one of the thinnest
books on the shelf.
How much thicker is Amalie's book than Raj's book?
Answer:
The difference in their thickness is: [tex]2\frac{1}{2}[/tex]
Step-by-step explanation:
Given
The attached plot which represents thickness of books
Required
Difference in the thickness of Amalie's (A) and Raj's (R)
From the question, we understand that:
[tex]A \to[/tex] Thickest
[tex]R \to[/tex] One of the least
This implies that:
[tex]A = 4[/tex]
[tex]R = 1\frac{1}{2}[/tex]
The difference (d) is:
[tex]d = 4 - 1\frac{1}{2}[/tex]
[tex]d = 2\frac{1}{2}[/tex]
Answer:
2 1/2
Step-by-step explanation:
A $550 T.V is discounted by 30%. It is then discounted another 10%
Answer:
$346.5
Step-by-step explanation:
10% of $550 is 55
3*55 = 165
550 - 165 = $385
10% of $385 is 38.5
385 - 38.5 = $346.5
Have a nice day! :-)
Use the figure to find the measures.
Lateral area =
Total area =
Volume =
Answer:
Lateral area = 2.pi.r.h = 2 x pi x 2 x 3 = 12 pi
Total area = lateral area + pi. r^2 . 2 = 20 pi
Volume = pi . r^2 . 2 . h = 24 pi
HELP ME PLS\ AHHHHHHHHHHHHHH HWLP HE;P I CANT OD THIS ]
Answer:
ummm. what do you need help with???
Which properties could you use to solve the following expression?
3 + 7 + 2 + 5 + 9
A
commutative, distributive and associative
B
associative and commutative
C
distributive and associative
D
associative only
Answer:
associative only!!!!!!!!!!!!!
Can someone please help me I will mark u brilliant for both answers
Answer:
4x+8y and 5(3x-y)
Step-by-step explanation:
In the first question 4(x + 2y), you multiply 4 by both the x and the +2y. This is known as the distributive property. So, 4*x is 4x and 4(2y) is +8y. This is equal to 4x+8y.
In the second question 15x-5y, there is a common factor of 5, so you take 5 out and get 5(3x-y). If you open up these brackets, you get 15x-5y. This cannot be factored any further.
express as a trinominal.
(2x+6)(2x+8)
Answer:
4x^2 + 28x + 48
hope this helps
have a good day :)
Step-by-step explanation:
Answer:
4x^2 +28x+48
Step-by-step explanation:
see steps below:)
5. Which statement is NOT TRUE about the function: y = -3x + 14 a. The Slope = -3 and the y-intercept = 14 b. A solution to this equation is (-1, 11) C. The equation is a Linear function d. The graph of the function passes through (4, 2)
Answer:
B
Step-by-step explanation:
Plzzzzz help for a brainly
Answer:
Circle
Step-by-step explanation:
The horizontal cross section of a cylinder is a circle
Answer:
Circle
Step-by-step explanation:
The horizontal cross section is a circle. If we slide the figure in half, the shape it would show is a circle.
If you have any questions, comment!!
Hope this helped!! :)
Adam is a golfer who thinks that his drives have an average length of more than 200\text{ m}200 m200, start text, space, m, end text. He decided to test \text{H}_0: \mu=200\text{ m}H 0 :μ=200 mstart text, H, end text, start subscript, 0, end subscript, colon, mu, equals, 200, start text, space, m, end text versus \text{H}_\text{a}:\mu>200\text{ m}H a :μ>200 mstart text, H, end text, start subscript, start text, a, end text, end subscript, colon, mu, is greater than, 200, start text, space, m, end text using a sample of 494949 drives. His sample mean distance was 208\text{ m}208 m208, start text, space, m, end text and his sample standard deviation was 25\text{ m}25 m25, start text, space, m, end text. Adam wants to use these sample data to conduct a ttt test on the mean. Assume that all conditions for inference have been met.
Answer:
t=2.24 for khan
Step-by-step explanation:
The test statistic for the Adam's test is 2.24.
What is Test Statistic?Test statistic is a value calculated from a statistical test of hypothesis. It describes the closeness of the observed data with the expected distribution under the null hypothesis.
The formula to find the test statistic is,
t = (x - μ) / (s / √n)
Here x is the sample mean, μ is the population mean, s is the standard deviation and n is the sample size.
Given,
x = 208, μ = 200, s = 25 and n = 49
Substituting the values,
t = (208 - 200) / (25 / √49)
= (8 × 7) / 25
= 2.24
Hence the test statistic is 2.24.
Learn more about test Statistic here :
https://brainly.com/question/14128303
#SPJ3
How do I graph this?
Will Give Brainliest!
Figure B is a scale image of Figure A.
Figure A 10.8, 7.2, 14.4cm
Figure B 2.7, 1.8, 3.6cm.
Answer:
4
Step-by-step explanation:
Reflect P (-5,10) over the x-axis. What are the coordinates of the reflected point? What quadrant is the reflected point in?
Answer:
I need the answer 2 QwQ....Similar Triangles
Use the diagram, which is not drawn to scale, to decide which proportions are true.
a. I and IV only
b. II only
c. I and II only
d. I only
Please select the best answer with the choices provided
Answer:
A. I and IV only
Step-by-step explanation:
I calculated it logically
The original price of a nightstand is $48. Which coupon is a better deal?
answer choice
25% off any nightstand
50%off any thing
Answer:
50% off
Step-by-step explanation:
The coupons are based on the percentage off. In this case, it doesn’t matter that one coupon is for nightstands. Would you rather save 50% or 25%? The answer is 50%.
2. What is the measure of the central angle if the time is 3:00?
9514 1404 393
Answer:
90°
Step-by-step explanation:
On a standard 12-hour analog clock, the minute hand will be at the 12, and the hour hand will be at the 3 at 3:00. The smaller angle between the two hands is 90°. Of course, the larger angle is 360° -90° = 270°.
Plz help me well mark brainliest if correct..........?
Answer:
B
Step-by-step explanation:
Answer:
B)... A and C
Step-by-step explanation:
A is a square with a length of 6 so the area is 36
but the perimiter is 24
C is a rectangle with a width of 4 and a length of 12 so the area is 36 also
but the perimiter of C is 32
A and C have the same area but a diffrent perimiter
Choose the best answer to complete the sentence.
If a point lies on the angle bisector of an angle, then it is
[Select)
from the two sides of the angle.
B
Answer:
Equidistant
Step-by-step explanation:
When we have a point lying on the angle bisector, it stands at an equal distance from the two sides of the angle
The purpose of the angle bisector is to divide the angle into two different equal parts
So, for a point to lie on this, it means it of the same distance from the two points of the angle
calculate the distance between the points J = ( -7, 6) and F = ( -1, 1 ) in coordinate plane
Step-by-step explanation:
d=√(x2-x1)²+(y2-y1)²
d=√(-1+-7)²+(1+6)²
d=√(-8)²+(7)²
d=√64+49
d==√113
d=10.6
Find the measure of ⦨ R . Round to nearest whole degree. Choose which method to use: Law of Sines or Use Law of Cosines.
Answer:
Law of sine
Angle R = 34°
Step-by-step explanation:
From the question given above, the following data were obtained:
Side opposite angle Q (q) = 54 ft
Angle Q = 96 °
Side opposite angle R (r) = 30 ft
Angle R =?
The value of angle R can be obtained by using the law of sine as illustrated below:
r / Sine R = q / Sine Q
30 / Sine R = 54 / Sine 96
Cross multiply
54 × Sine R = 30 × Sine 96
54 × Sine R = 30 × 0.9945
54 × Sine R = 29.835
Divide both side by 54
Sine R = 29.835 / 54
Sine R = 0.5525
Take the inverse of Sine
R = Sine¯¹ 0.5525
R = 34°
Thus, the value of angle R is 34°
