9514 1404 393
Answer:
y = 4x -7
Step-by-step explanation:
Rearranging the slope-intercept for equation, we can find the intercept:
y = mx +b
y -mx = b . . . . . subtract mx
We know the slope of the parallel line is the same as that of the given line (m=4), so we only need to find 'b'.
b = 9 -4(4) = -7
The desired equation is ...
y = mx +b
y = 4x -7
You want to buy a specific computer. A sales representative of the manufacturer claims that retail stores sell this computer at an average price of $1,249 with a very narrow standard deviation of $25. You find a website that has a price comparison for the same computer at a series of stores as follows:
$1,298; $1,229.96; $1,193.07; $1,279; $1,224.98; $1,229.97; $1,269.98; $1,248.
Can you argue that pricing has a larger standard deviation than claimed by the manufacturer?
Answer:
We fail to reject the null
Step-by-step explanation:
Given the data: 1298; 1229.96; 1193.07; 1279; 1224.98; 1229.97; 1269.98; 1248
Mean price, μ = 1249
Standard deviation, σ = 25
Variance, σ² =
Null hypothesis, H0 : σ² = 25²
Alternative hypothesis, H1 : σ² > 25
Using calculator, the sample standard deviation :
Sample standard deviation = s = 34.072
Sample size, n = 8
For chi² distribution :
X² = [(n - 1)s²] ÷ σ²
X² = [(8 - 1)*34.072^2] ÷ 25^2
X² = (7 * 1160.901184) / 625
X² = 13.002093
Using the Pvalue from Chisquare calculator, df = 8 - 1 = 7; α = 0.05
Pvalue =0.07206
0.07206 > 0.05
Since , Pvalue > α
We fail to reject the null; there is insufficient evidence to conclude that standard devuatue do selling a computer is greater than 25
Find the missing side of each triangle.
1)
15 m
9 m
A) 19 m
C) 8 m
B) 17 m
D) 12 m
Answer:
20
Step-by-step explanation:
it is because its a even number XD
what does x = and round to the nearest tenth
Answer:
X=8.6
Step-by-step explanation:
;)
what is m/a
side a
side b
What is the length of arc S shown below? Enter an exact expression. The angle in the figure is a central angle in radians.
Answer:
h
Step-by-step explanation:
n
Answer:
the answer is 18π/5
Step-by-step explanation:
A Central angle (θ) measured in radians tells us how many times the radius fits into the arc.
arc length ÷ radius = θ
arc length = θ · radius
S = 3π/5 · 6 cm
S = 18π/5 cm
Therefore the answer is 18π/5
The coordinate plane shows the graphs of two exponen functions which equation is true?
Answer:
A
Step-by-step explanation:
PLEASE HELP QUICKK!!
Suppose (-7, -3) is reflected across the x-axis, and then the y-axis. what will be the new coordinates?
Answer:
C (7, -3)
Step-by-step explanation:
Reflecting on x causes the x value to change signs, then again on y changes the y value's sign.
Answer:
B
Step-by-step explanation:
-7 is the x and -3 is the y so flip would be (-7,3)
Fifteen less than twice a number is 21.
What is the missing number? |
Answer:
2y - 15
Step-by-step explanation:
well 15 LESS than TWICE a number. okay so let’s start off by making a variable for the unknown number.... y. the variable is y. so now we have to think, TWICE that number, but we don’t know the number.
Now that we have the variable and we know it has to be doubled, let’s start off making the first half... we can out that into 2y. which is 2 multiplied by the unknown number.
now that we have the first half done, we have to take the 15 less. Less can mean or subtract in this kind of situation. but for this certain scenario, it will be subtraction. so the equation would be 2y - 15.
Hello!
First of all, let the number be r.
"twice a number" means we multiply that number by 2:
2r
Subtract 15 (fifteen less)
2r-15
This is equal to 21:
2r-15=21
[tex]\rule{160}{2}[/tex]
Solve the equation:
2r=21+15
2r=36
Divide both sides by 2:
r=18
Hope everything is clear.
Let me know if you have any questions!
#LearnWithJoy
[tex]\rule{2}{2}~\bf{An~Emotional~Helper}~\rule{2}{2}}[/tex]
3/5 TIMES 1/2 WHOEVER ANSWERES IN UNDER 2 MINUTS I WILL MARK BRAINLIEST AND ILL GIVE YOU EXTRA POINTS
Step-by-step explanation:
3/10 or 0.3
hope it helps:))!
Answer:
0,3
= 3/10
Step-by-step explanation:
thank you
i hope this helps
Find the Coordinates of the midpoint MN with endpoints M (-2, 6) and N (8,0)
Midpoint formula:
[tex](\frac{x_1 + x_2}{2} , \frac{y_1 + y_2}{2})[/tex]
So,
(-2 + 8 / 2 , 6 + 0 / 2)
(6 / 2 , 6 / 2)
(3, 3)
Midpoint coordinate: (3, 3)
#9 Consider the expression 9x - 4b + 3. Select all of the statements below
that are true.*
There are 2 variables in the expression.
9 is the only coefficient in the expression
There are 2 terms in the expression.
3 is the constant in the expression
There are 3 terms in the expression
I need help plz
Answer:
Step-by-step explanation:
True:
- There are two variables
- 3 is the constant
- There are 3 terms in the expression
HELP ASAP.
I’m so confused can someone tell me what to do on this? I’ll mark brainliest
9514 1404 393
Answer:
52°: angles 4, 13, 18128°: angles 1, 3, 14, 1744°: angles 5, 12, 15136°: angles 2, 6, 11, 1684°: angles 7, 1096°: angles 8, 9Step-by-step explanation:
Where a transversal (t or u) crosses parallel lines (m and n), there are four angles formed at each intersection. Corresponding and vertical angles are congruent.
Angles in a linear pair are always supplementary. Of course, the angles interior to a triangle always total 180°. These facts let you find the relationships of all the angles in the figure.
Angle 13 corresponds to the given angle 52°, so has the same measure. Angles 4 and 18 are vertical angles with respect to those, so also have the same measure. Angles 1 and 3, 14 and 17 are supplementary to the ones just named, so all have measure 128°.
In the same way, angles on the other side of the figure can be found from the one marked 44°. Angles 5, 12, and 15 also have that measure; and angles 2, 6, 11, and 16 are supplementary, 136°. Angles 7 and 10 finish the triangle interior so that its sum is 180°. That means they are 180° -52° -44° = 84°. Of course, angles 8 and 9 are the supplement of that value, 96°.
In summary:
52°: angles 4, 13, 18128°: angles 1, 3, 14, 1744°: angles 5, 12, 15136°: angles 2, 6, 11, 1684°: angles 7, 1096°: angles 8, 9x-1/x^2 - x - 20 Give the equivalent numerator if the denominator is (X - 5)(x + 4)(x + 3)
x^2 + 2x + 3
x^2 + 2x - 3
x^2-3
Answer:
[tex]x^2+2x-3[/tex]
Step-by-step explanation:
Note that [tex]x^2-x-20=(x-5)(x+4)[/tex], so, if the denominator is [tex](x-5)(x+4)(x+3)[/tex], we need to multiply the numerator by [tex](x+3)[/tex]. And [tex](x-1)(x+3)=x^2+2x-3[/tex].
I need help ASAP have a picture
Given f(x) = x^2+ 3x, find f(A + 4).
Answer:
f(x) = x^2+ 3x
f(A + 4)=(A+4)²+3(A+4)=A²+8A+16+3A+12
=A²+11A+28
Identify the constant term in this expression.
8x + 4y + xy + 1
Please help
The like terms are the terms that can be put
together. (9x) and (3x) are like terms because
they both have an x attached. (–5) and (3) are
like terms because they have nothing attached.
Pls help ASAP PLS PLS PLS
Answer:
Step-by-step explanation:
Let the exponential function for the given table is,
f(x) = a(b)ˣ
Here, f(x) = Price of the item after 'x' years
a = Initial price of the item
b = Growth factor
x = Duration(years) from year 1913
By exponential regression calculator,
Exponential function represented by the table will be,
f(x) = 7.822(1.034)ˣ
Now we have to calculate the price of the item in year 2025.
Difference in time = 2025 - 1913
= 112 years
Price of the item after 112 years,
f(112) = 7.822(1.034)¹¹²
= $330.840
Mentally solve 93 - 27 in as many ways as you can
Answer:
66
That is one way to solve it.
Answer:
93-27= 66
Step-by-step explanation:
Ally picked 25 roses. She gave away 10 roses. What percent of the roses does Ally still have?
Answer:
She still has 60%
Step-by-step explanation:
First you make the 25 a 100 which is basically multiply by 4 which you should do the same for 10
so 40/100 is how much she game away
She gave away 40%
She still has 60%
The percent of the roses does Ally still have is 60%.
Given that,
Ally picked 25 roses. She gave away 10 roses.
Based on the above information, the calculation is as follows:
[tex]= \frac{25-10}{25}[/tex]
= 60%
Learn more: brainly.com/question/17429689
Write the word sentences as an inequality.
A number b is at least -3.
An inequality that represent this word sentences is?
Answer:
b >= -3
Step-by-step explanation:
The b is at least meaning that it can also be equal to -3.
Simon's monthly take-home pay after taxes) is $2100. If he pays 22% of his gross pay (before taxes) in tax, what is his gross pay?
Simon's gross pay is $
(Round to the nearest dollar as needed.)
Answer:
[tex]approximately \: 2692 \: dollars[/tex]
Step-by-step explanation:
[tex]2100 = x \times 0.78[/tex]
We take both sides divided by 0.78
[tex]2100 \div 0.78 = x \\ 2692 = x \\ x = 2692 \: dollars[/tex]
PLZZZZ HELP IT'S FOR MIDDLE SCHOOOOOLLLLL
Tyler’s brother works in a shoe store. Tyler’s brother earns a commission. He makes 2.5% of the amount he sells. Last week, he sold $900 worth of shoes. How much was his commission?
Answer:
$22.5
Step-by-step explanation:
HELP! DUE IN 5 MINS TvT
Could the table of (x,y) pairs
Have been generated by a linear function?
O. Yes
O. No
Evaluate: 2/3−1/7
A
11/3
B
1/4
C
11/21
D
17/21
Answer:
option C :11/21
Step-by-step explanation:
option C is the correct answer of this question.
plz mark my answer as brainlist plzzzz vote me also.
Hope this will be helpful to you.
Step-by-step explanation:
C is the correct answer, hope this helps and I luv ur profile pic
2.945 to the nearest hundredth
Answer:
2.95
Step-by-step explanation:
2.945 would round up to 2.95 because when a number is followed by 5 it rounds up.
which one is a Metaphor
1. A phrase where the words have no connection to their meaning. carries no meaning outside of context or prior experience with the phrase and cannot be translated.
2. Extreme exaggeration
3. words that have the same beginning sound together
4. A reference or mention of a person, event, statement, piece of art, history, myths, religion, or popular culture
5. A direct comparison that does not use like or as. Instead, it says something IS something else.
6. Giving human characteristics to non-human things.
Answer:
5. A metaphor is a direct comparison that does NOT use the words like or as. It says that something is something else.
For example:
Her eyes are the ocean and you can get lost in their waves.
His speed is that of a cheetah.
She is the calm wind on a late Sunday evening.
He is the brain of a computer while he designs the new car.
Does how many mean to add or subtract?
Answer:
Trick question
Step-by-step explanation:
It is divide
How many means divide lol
What is the volume of a cube with edge length 1/3 cm
Answer:
1/27 cm3
Step-by-step explanation:
(1/3)(1/3)(1/3)
If X = 10, find the value of the variable b. If your answer is not an integer, round to 2 decimal places.
5. What are the coordinates of the reflection of (5.-7) about the x-axis?
Need a Hir
A (-5, -7)
B. (-5, 7)
C.(7,5)
D. (5, 7)
Answer:
D
Step-by-step explanation: