Answer:
2) 0
Step-by-step explanation:
It is 0 because it remains constant and it is parallel to the x-axis
Solve each of the following equations by the trial and error method : A) X- 7= -3 help some one now
Answer:
X - 7 = - 3
X = - 3 + 7
X = 4
the 7 turns positive because it was moved to the other side of the symbol "=" so we reverse the sign
- becomes +
and
+ becomes -
The sum of two numbers is 24.The difference of their square is 144.what are the two numbers?
Answer:
9 and 16
Step-by-step explanation:
let the two numbers are X and Y
X+Y=24
X^2-Y^2=144
solve simultaneously
help me pleaseeeeeee
Answer:
C
Step-by-step explanation:
18 x 5.85 = 105.3
105.3 is closest to the estimate of $120
Solve 4.85 ÷ 5 = ___. 0.94 0.95 0.96 0.97
Answer:
4.85 ÷ 5 = 0.97
hope this helps
Write an equation in point-slope form for the line through the given point with the given slope.
(8, –3); m = -1/4
Answer:
y+3 = -1/4(x-8)
Step-by-step explanation:
Point slope form is y-y1 = m(x-x1) where m is the slope and (x1-y1) is a point on the line
(y- -3) =-1/4(x-8)
y+3 = -1/4(x-8)
Question 4 of 25 There are 6 brooms and 4 mops in a janitor's closet. What is the ratio of the number of brooms to the number of mops? 3/5
Answer:the ratio of brooms to mops is 3:2
Step-by-step explanation:
6:4 can be simplified to 3:2
Answer:
6:4
Step-by-step explanation:
also can be simplified 3:2
if I choose two cards, one of the time, from a standard deck of cards, what’s my probability that I choose A red card, then without putting it back to a black card
Answer:
P(Red) = 26/52, P(Black) = 26/51
Step-by-step explanation:
There are 26 red cards and 26 black cards in a standard deck of 52 cards.
This means the probability of picking a red card from the deck is 26/52.
Now, since we are taking out the red card after drawing from the deck, we only have 51 cards. Therefore, the probability of picking a black card from the deck is 26/51.
If A/B and C/D are rational expressions, then A/B ÷ C/D = (AC)/(B/D)
true or false
9514 1404 393
Answer:
False
Step-by-step explanation:
(A/B) ÷ (C/D) = (A/B) × (D/C) = AD/(BC) ≠ AC/(B/D)
Plsssss ans plssss plssss
Answer:
a 3² +4² = 25 the factors are 5²
b 8²+6²= 100 the factors are 5²and 2²
c 12²+5²= 169 the factors are 13²
d 8²+15²= 289 the factors are 17²
The mean useful life of car batteries is 56 months. They have a standard deviation of 6. Assume the useful life of batteries is normally
distributed
a. Calculate the percent of batteries with a useful life of less than 38 months. (Round your answer to the nearest hundredth percent.)
b. Calculate the percent of batteries that will last longer than 68 months. (Round your answer to the nearest hundredth percent.)
a. Percent of batteries
%
b. Percent of batteries
%
Answer:a. 0.13% b. 2.28%
Step-by-step explanation:
Let x denotes the useful life of batteries.
Given: [tex]\mu=56[/tex] months, [tex]\sigma=6[/tex]
Since X is normally distributed.
The probability that batteries with a useful life of less than 38 months
[tex]P(X<38)=P(\frac{X-\mu}{\sigma}<\frac{38-56}{6})\\\\=P(Z<-3) \ \ \ [Z=\frac{X-\mu}{\sigma}]\\\\=1-P(Z<3) \\\\=1- 0.9987\\\\=0.0013[/tex]
The percent of batteries with a useful life of less than 38 months =0.13%
The probability that batteries will last longer than 68 months
[tex]P(X>68)=P(\frac{X-\mu}{\sigma}>\frac{68-56}{6})\\\\=P(Z>2) \ \ \ [Z=\frac{X-\mu}{\sigma}]\\\\=1-P(Z<2)\\\\=1-0.9772=0.0228[/tex]
The percent of batteries that will last longer than 68 months =2.28%
The aspect ratio (the ratio of screen width to
height) of a rectangular flat-screen television is
16:9. The length of the diagonal of the screen
the television's screen 12c. Determine and wate. to
the nearest inch, the screen size (diagonal) of this
Mat-screen television
with a screen height of 20.6
inches
Answer:
[tex]Width = 36in[/tex]
[tex]Size = 42.02[/tex]
Step-by-step explanation:
Given
[tex]x \to width[/tex]
[tex]y \to height[/tex]
[tex]x : y = 16 : 9[/tex]
Required
The size of [tex]screen[/tex] of height [tex]20,6in[/tex]
First, we calculate the width using the following equivalent ratios
[tex]16: 9 = x : 20.6[/tex]
Express as fraction
[tex]\frac{16}{ 9} = \frac{x }{ 20.6}[/tex]
Solve for x
[tex]x = 20.6 * \frac{16}{ 9}[/tex]
[tex]x = 36.62[/tex]
Hence:
[tex]Width = 36in[/tex] --- approximated
So, we have:
[tex]x = 36.62[/tex]
[tex]y =20.6[/tex]
The size (diagonal) is then calculated using:
[tex]Size = \sqrt{x^2 + y^2[/tex]
[tex]Size = \sqrt{36.62^2 + 20.6^2[/tex]
[tex]Size = \sqrt{1765.3844[/tex]
[tex]Size = 42.02[/tex]
[tex]Size =42in[/tex] --- approximated
three factors of 24 which have a sum of more than 37 and less then 40
Answer:
8, 6, 24 because 8+6+24=38
Answer:
24+12+2=38
Step-by-step explanation:
The number of road construction projects that take place at any one time in a certain city follows a Poisson distribution with a mean of 6. Find the probability that less than 3 road construction projects are currently taking place in this city.a) 0.050409b) 0.089235c) 0.301168d) 0.014936
Answer:
The probability that less than 3 road construction projects are currently taking place in this city is 0.06197
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
In which
x is the number of sucesses
e = 2.71828 is the Euler number
[tex]\mu[/tex] is the mean in the given interval.
Poisson distribution with a mean of 6.
This means that [tex]\mu = 6[/tex]
Find the probability that less than 3 road construction projects are currently taking place in this city.
This is:
[tex]P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)[/tex]
So
[tex]P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}[/tex]
[tex]P(X = 0) = \frac{e^{-6}*6^{0}}{(0)!} = 0.00248[/tex]
[tex]P(X = 1) = \frac{e^{-6}*6^{1}}{(1)!} = 0.01487[/tex]
[tex]P(X = 2) = \frac{e^{-6}*6^{2}}{(2)!} = 0.04462[/tex]
[tex]P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.00248 + 0.01487 + 0.04462 = 0.06197[/tex]
The probability that less than 3 road construction projects are currently taking place in this city is 0.06197
The mean salary at a local industrial plant is $26,500 with a standard deviation of $5000. The median salary is $27,200 and the 57th percentile is $30,400. Based on the given information, determine if the following statements are true or false.
a. Approximately 7% of the salaries are between $26,500 and $30,400.
b. The percentile rank of $25,400 is 50.
Answer:
a. False.
b. False.
Step-by-step explanation:
Statement a:
The median salary is $27,200 and the 57th percentile is $30,400.
Thus, 57-50 = 7% of the salaries are between $27,200 and $30,400, that is, not between $26,500 and $30,400, and thus, statement a is false.
b. The percentile rank of $25,400 is 50.
The median salary is $27,200, and thus, the percentile rank of $27,200 is 50, and the percentile rank of $25,400 is less than 50, and this statement is false.
Open with Angles p and q are complementary, p is four times the size of q. What is the size of q ?
Answer:
p = 72
q = 18
Step-by-step explanation:
Complementary means they add to 90o
p + q = 90
p = 4*q
Substitute 4q for p
4q + q = 90 Combine
5q = 90 Divide by 5
5q/5 =90/5
q = 18
p = 4q
p = 4*18
p = 72
If you know how to solve this, Please answer it. Thank You
Please show your work and the steps.
The first one to answer the question right, will get Brainlist!
I PROMISE!!!!!
Answer:
Step-by-step explanation:
Work done by Kayla in 1 hour = 1/15
Work done by Jennifer in 1 hour = 1/16
Work done by both Kayla and Jennifer = [tex]\frac{1}{15}+\frac{1}{16}[/tex]
[tex]= \frac{1*16}{15*16}+\frac{1*15}{16*15}\\\\=\frac{16}{240}+\frac{15}{240}\\\\=\frac{31}{240}\\[/tex]
Hours taken by both = 240/31 = 7 23/31 hours
HELP DUE RIGHT NOW
will mark brainliest!
10 points
A = {5, 6, 7, 8, 9, 10} and B = {2, 3, 4, 5, 11, 12, 13}. What is A∪B? What is A∩B?
Step-by-step explanation:
A U B= {2,3,4,5,6,7,8,9,10,11,12,13}
A n B= {5}
Definition: Another unit of measurement for angles. This one can be measured on the x-y coordinate
plane. The number of these in an angle equals the number of radii it takes to measure a circular arc
described by that angle.
Answer:
radians
Step-by-step explanation:
Another unit of measure for angles others then degrees are radians.
Answer:
radians
Step-by-step explanation:
I’ll give brainliest
Answer:
1.5
Step-by-step explanation:
The constant of proportionality is the slope
m= (y2-y1)/(x2-x1)
Pick any two points
m = (12-6)/(8-4)
= 6/4
= 3/2
= 1.5
m = (12-6)/(8-4)
→ 6/4
→ 3/2
→ 1.5
The required answer is 1.5.
3. A waitress earns 15% in gratuity on the total price of her customer's meals. She also
earns $5 per hour. If the waitress's customers spend $200 on food and the waitress
works for 4 hours, how much would she earn in total?
a) $30
b) $50
c) $230
d) $250
first you find 15% of $200
15/100×200=$30
then you find the total money she earned for the hours she worked
4×5=$20
then you add the amounts
$20+$30=$50
The distance a cargo ship travels is proportional to time. In 2 hours, the ship travels 53 miles. The relationship between distance and time can be represented as y = kx, where x is the time, in hours, and y is the distance, in miles. What is the value of k for this ship?
Answer:26
Step-by-step explanation:
The reason i got 26:
-we substitute the letters(variables) and have 52=(k)2
but what is k? k is y divided by x (just like y is k times x)
Write the equation of the line that has a slope of 2 and passes through the point (-5, 1).
y = 2x - 5
y = 2x + 11
y = 2x + 1
y = 2x + 9
Step-by-step explanation:
= 2x +b
Use the given point (2, 5)
5 = 2(2) +b
b = 5 -4 = 1
The equation of the line is
y = 2x +1
Note general form of the slope-intercept form of a line is y = mx +b, where m is the slope and b is the y-axis intercept
help if you can! no links please :)
Answer:5/12
Step-by-step explanation:
help please ............
Answer:
A is the Far Left
B is the Base
C is the Hypotenuse
Step-by-step explanation:
Interpretation
the product of a number and five less than the number is 66 find the number
Answer:
the answer is 16.5 or when runner becomes 17.
Step-by-step explanation:
The product of a number and five
= the number is always replaced by a variable. and I used
[tex]x[/tex]
[tex]5 \times x[/tex]
less than the number is 66
=
[tex]5 \times x - x = 66[/tex]
[tex] = 5x - x = 66[/tex]
[tex]4x = 66[/tex]
you divide both sides by 4 since we want X to stand alone .
[tex] \frac{4x}{4} = \frac{66}{4} [/tex]
[tex]4 \: will \: cancel \: 4 \: and \: 66[/tex]
[tex]giving \: you \: 16.5 \: or \: when \: run \: becomes17[/tex]
13 Calculate the area of a circle with radius 14 cm.
Answer:
[tex]{ \tt{formular : {area = \pi {r}^{2} }}} \\ area = 3.14 \times {14}^{2} \\ \\ { \bf{answer : { \tt{area = 615.75 \: {cm}^{2} }}}} \\ \\ { \underline{ \blue{ \tt{⚜becker \: jnr}}}}[/tex]
Answer:
A≈ 615.75 [tex]cm^{2}[/tex]
Step-by-step explanation:
A= [tex]\pi[/tex][tex]r^{2}[/tex]
A= [tex]\pi[/tex]·[tex]14^{2}[/tex]
A≈ 615.75216 [tex]cm^{2}[/tex]
Malaria is a leading cause of infectious disease and death worldwide. It is also a popular example of a vector-borne disease that could be greatly affected by the influence of climate change. The scatterplot shows total precipitation (in mm) in select cities in West Africa on the x axis and the percent of people who tested positive for malaria in the select cities on the y axis in 2013. Precipitation is the __________ variable
Answer:
independent and explanatory
Step-by-step explanation:
In a study, an independent variable may be defined as the variable that does not affect the other variables in the study when it is changed. Thus a variable is said to be independent when it is not affected by the any other variable in the study.
Whereas, an explanatory variable can be manipulated or changed by the experimenter. It is the variable that is not independent for certain variables.
Thus in the context, the scatterplot showing the total precipitation and the percent of the people who tested positive for the malaria test. The precipitation from the graph is the independent as well as the explanatory variable.
Factor 21a–27.
........................................
Answer:
3(7a - 9)
Step-by-step explanation:
21a–27
3*7*a - 3*9
Factor out 3
3(7a - 9)
Answer:
3(7a-9)
Step-by-step explanation:
The greatest common factor between 21a and 27 is 3. Hope this helps!
1 N 3 4 5 6 7 00 9 10 The fastest that a seahorse can travel is 2,640 feet per hour. What is its top speed in m 0.05 miles per hour 0.2 miles per hour 0.5 miles per hour O 2 miles per hour
Step-by-step explanation:
1 mile=5280 feet
0.5 mile=2640 feet.
The fastest that a seahorse can travel is 2,640 feet per hour. The top speed in miles per hour is 0.5 miles per hour.Can be also.
If the answer is correct plz mark me as brainliest.