Which is a stretch of an exponential decay function?
f(x)=4/5(5/4)x
f(x)=4/5(4/5)x
f(x)=5/4(4/5)x
f(x)=5/4(5/4)x
Find the slope from the given equation. 9y = -3x + 5
Answer:
-3/9x
Step-by-step explanation:
You rearrange for 'y' so divide both sides by it's coefficient which is 9.
Answer:
The slope is -1/3
What is the value of y?
Using the Pythagorean theorem,
[tex]6^{2}+y^{2}=(3+9)^{2}\\\\36+y^2=144\\\\y^2=108\\\\y=\boxed{6\sqrt{3}}[/tex]
A basketball player made 80 out of 100 attempted free throws. What percent of free throws was made?
I need a correct answer asap!
Percent of free throws = (number of free throws made / total attempts) x 100
Percent = (80/100) x 100 = 80%
The answer is 80%
Answer:
80%
Step-by-step explanation:
A comet travels at an average speed of 233,000 km/h.
It takes 7 days for the comet to reach Earth.
Find the distance, in km, the comet travelled.
Answer:
39,144,000 km
Step-by-step explanation:
Hi there!
Distance traveled = time * speed
Given speed: 233000 km/h
Given time: 7 days
It's important to note that our speed is given in per hours and out time is given in days. So in order to find how far the comet has traveled we must convert days to hours.
There are 24 hours in 1 day.
So to convert days to hours simply multiply amount of days by 24
24 * 7 = 168
So the comet has traveled for 168 hours
Now we can find distance traveled
Once again distance traveled = time * speed
Given speed is 233000 km/h
Given time is 168 hours
Distance = 168 * 233000 = 39,144,000
So the comet has traveled for a total distance of 39,144,000 km
96 sq meters
144 sq meters
84 sq meters
102 sq meters
Pls show work I get different answers from people every time
Answer:
84 sq meters
Step-by-step explanation:
First, divide the shape in 2 or more parts so that you can find it step by step
Divide this shape in three parts:
One part (blue): 2 m and 3 m rectangle
Second part (orange): 5 m and 12 m rectangle
Third part (red): 6 m and 3 m rectangle
(you can also see this below: in the pic there are three parts so you figure out that which is the correct value for the sides)
Now, find area of each shape by multiplying its values:
1st shape: 3 x 2 = 6
2nd shape: 5 x 12 = 60
3rd shape: 6 x 3 = 18
As you have the area of all the different shapes,
add all of them:
6 + 60 + 18 = 84 sq meters
I hope this helps :)
x=ky a. if x=15 when y=14.find the value of k.. b..Find x when y=70 c...find y when x=45
Step-by-step explanation:
Given that,
a. x = 15 and y = 14
The equation is :
x = ky
or
[tex]k=\dfrac{x}{y}[/tex]
Put all the values,
[tex]k=\dfrac{15}{14}\\\\k=1.07[/tex]
b. Now, put y = 70 and k = 1.07.
x = 1.07×70
x = 74.9
c.
Put x = 45 and k = 1.07.
[tex]y=\dfrac{x}{k}\\\\y=\dfrac{45}{1.07}\\\\y=42.05[/tex]
Hence, this is the required solution.
9 sprinters have made it to the Olympic finals in the 100-meter race. In how many different ways can the
gold, silver, and bronze medals be awarded?
Answer:
in three different ways the first one gets a gold one the other 4 printers get silver n the last 4 printers get bronze.
When doing blood testing for a viral infection, the procedure can be made more efficient and less expensive by combining partial samples of different blood specimens. If samples from three people are combined and the mixture tests negative, we know that all three individual samples are negative. Find the probability of a positive result for three samples combined into one mixture, assuming the probability of an individual blood sample testing positive for the virus is 0.06.
Answer:
0.1694 = 16.94% probability of a positive result for three samples combined into one mixture.
Step-by-step explanation:
For each test, there are only two possible outcomes. Either it is positive, or it is negative. The probability of a test being positive or negative is independent of any other test, which means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
The probability of an individual blood sample testing positive for the virus is 0.06.
This means that [tex]p = 0.06[/tex]
If samples from three people are combined and the mixture tests negative, we know that all three individual samples are negative. Find the probability of a positive result for three samples combined into one mixture.
It will be positive if at least one of the tests is positive, that is:
[tex]P(X \geq 1) = 1 - P(X = 0)[/tex]
In which
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 0) = C_{3,0}.(0.06)^{0}.(0.94)^{3} = 0.8306[/tex]
Then
[tex]P(X \geq 1) = 1 - P(X = 0) = 1 - 0.8306 = 0.1694[/tex]
0.1694 = 16.94% probability of a positive result for three samples combined into one mixture.
Can someone help pleaseee
Answer:
Ŷ = 76.4064+5.4254X
0.786
Strong positive relationship
Score = 98
Step-by-step explanation:
Using technology, the linear model obtained by fitting the data is :
Ŷ = 76.4064+5.4254X
Where, slope = 5.4254
y = test score ; x = study time
The Correlation Coefficient obtained is 0.786 ; which depicts that there exist a strong positive relationship between the two variables.
Using the model; test score, if x = 4
Ŷ = 76.4064+5.4254(4)
Y = 98.108
Test score = 98
Can anyone please help me with this ? Thanks 2.5m = 75
2.5m = 75
To find m divide both sides by 2.5:
M = 75/2.5
M = 30
Answer:
m = 30
Step-by-step explanation:
2.5 m = 75
To find m divide 75 by 25
m = 75 / 2.5
m = 30
PLEASE HELP ME WITH THESE TWO PROBLEMS ASAP !!!!!!! PLS
Answer:
1. 35 degrees
2. 44 degrees
Step-by-step explanation:
1). 35 degree
180-59=121
121+24+ m<1= 180
m<1= 35 degree
2) m<CED= 45 degree
As CED is a right angled triangle, one angle is of 90 degree while other 2 angles are of 45 degree which makes a sum of 180.
use the protractor to find the measure of each angle:
a. CAB
b. FAB
c. EAB
d. HAF
Answer:
a. 20-degree
b. 110-degree
c.70-degree
d.50-degree
help me out pleaseeee
Answer:
The correct option is (b).
Step-by-step explanation:
The solution of the given polynomial is :
[tex](-\dfrac{1}{3},4)[/tex]
x = 1/3 and y = -4
i.e.
Sum of roots = (1/3-4) = -11/3
Product of roots = (1/3)(-4) = -4/3
The quadratic equation is as follows :
[tex]x^2+(\text{sum of roots})x+\text{Product of roots}=0[/tex]
Put all the values,
[tex]x^2+\dfrac{-11}{3}x+\dfrac{-4}{3}=0\\\\3x^2-11x-4=0[/tex]
So, the correct option is (b).
area of a trapezium.
Answer:
Step-by-step explanation:
A= (a + b) * h/2
Answer:
what they said
Step-by-step explanation:
yeah what they said
the two solids below are similar and the ratio between the lengths of their edges is 4:7 what is the ratio of their surface areas? A 7:4 B 16:49 C 16:29 B 64:343
9514 1404 393
Answer:
B. 16:49
Step-by-step explanation:
The area ratio is the square of the edge length ratio:
area ratio = (4:7)² = 4²:7² = 16:49
_____
It might help you to recall that area is the product of two linear dimensions if each is multiplied by 4/7, the resulting product will be multiplied by (4/7)².
A = LW
A' = (4/7L)(4/7W) = (4/7)²(LW) = (16/49)·A
An educator wants to determine whether early exposure to school will affect IQ. He enlists the aid of the parents of 12 pairs of preschool-age identical twins who agree to let their twins participate in this experiment. One member of each twin pair is enrolled in preschool for 2 years while the other member of each pair remains at home. At the end of the 2 years, the IQs of all the children are measured. The results follow.
IQ
Pair Twins at
preschool Twins at
home
1 109 116
2 122 119
3 110 106
4 119 115
5 114 118
6 112 103
7 128 125
8 114 116
9 108 107
10 117 123
11 117 116
12 106 104
Does early exposure to school affect IQ? Use α = 0.052 tail.
tobt =
Is 12 rational? irrational? Whole? Integer?
Answer:
It is an Integer, but it can also be a rational number.
Step-by-step explanation:
My math teacher told meh
A pair of vertical angles has measures
(3x + 4) and ( 73 – 9)
What is the value of x?
Answer:
20
Step-by-step explanation:
Vertical angles are always equal to each other. So the answer is
3x + 4 = 73 - 9 Are you sure this is what the question is?
3x + 4 = 64 Subtract 4 from both sides
-4 -4
3x = 60 Divide by 3
3x/3 = 60/3
x = 20
What is the perimeter of Quadrilateral ABCDwith vertices at A(−11, −6), B(−3, 0), C(1, 0), and D(1, −6)?
Answer:
32 units
Step-by-step explanation:
the perimeter =
(1 -(-3)) +(0-(-6)) + (1 -(-11) + (√(12-4)²+6²)
= (1+3) +(0+6) +(1+11) +(√(64+36))
= 4+6+12 + 10
=32 units
someone please help! (listing BRAINLIST and giving points) :)
thx thx thx thx thx thx thx sa points sabi mo give away eh
I hope this is help full to you
round 5763 to the nearest hundred
Answer:
[tex]5800[/tex]
Step-by-step explanation:
Hope it is helpful...
Answer:
5800
Step-by-step explanation:
5763
7 is in the hundreds place
We look at the tens place to determine how to round
If the tens place is 5 or above we round up, if it is 4 or less- leave it alone
Since 6 is 5 or above, we round the 7 up
5763 rounds to 5800
What is the sum of the factors?
Two factors of -48 have a difference of 19. The factor
with a greater absolute value is positive.
-19
-13
13
16
Answer:
13
Step-by-step explanation:
The two factors 16 and -3.
The distance that students drive to school is best modeled with a skewed right distribution that has a mean of 10 miles and a standard deviation of 2 miles. Suppose a sample of 100 students has been taken and the sample mean distance for the sample is calculated. Describe the shape of the sampling distribution of the sample mean
Answer:
The answer is "Approximately normal".
Step-by-step explanation:
sample size[tex]n=100[/tex]
Sample size [tex]n \geq 30[/tex]
It is because [tex]C \perp T[/tex] the sampling distribution of the sample means is approximately normal.
simplify 22+[55-{72÷(7+5×2-11)+3}+2]
Answer:
The correct answer is 319.
Step-by-step explanation:
it is in the given picture.
( don't mind my writing!!)
A person's Body Mass Index (BMI) is a measure of the amount of fat in their body. The relationship between antioxidant food consumption per day in cups and the BMI of an individual is modeled by the following line of best fit: [tex]y=-1.2x+26[/tex] . Interpret the slope and intercept of the trend line within the context of the data.
DIRTY ANSWERS REPORTED
NO LINKS ALLOWED!
Answer:
The slope of -1.2 means that for each cup of antioxidant a person consumes per day, it's BMI decreases by 1.2.
The intercept of 26 means that a person that does not consume any cup of antioxidant food a day should have an BMI around 26.
Step-by-step explanation:
Line of best fit:
[tex]y = -1.2x + 26[/tex]
Slope:
The slope is the number that multiplies x, that is, -1.2. The slope of -1.2 means that for each cup of antioxidant food a person consumes per day, it's BMI decreases by 1.2.
Intercept:
Value of y when x = 0, that is, 26. The intercept of 26 means that a person that does not consume any cup of antioxidant food a day should have an BMI around 26.
Answer:
the slope is -1.2 and the intercept is 26.
Step-by-step explanation:
our line's equation is y= -1.2x + 26
In the equation y = mx + b, m is the slope and b is the y-intercept. So in this equation, look for where the numbers are placed and that it what you get.
Plzzz someone help me , ur flippin amazing if u help me :)
Answer:
C ................................. I think
Decrease
M720.00 by 25%
Answer:
540
Step-by-step explanation:
720 (100-25) to find the decimal to use (below 1.00 is decreasing)
720 (.75) = 540
please help i am actually so confused on this one
Answer:
C
Step-by-step explanation:
Using pythagoras theorem, you will find that AC= 12,
[tex]\sqrt{13^2-5^2}= 12[/tex]
Sin A = Opposite / Hypotenuse, in this case the opposite of A is CB which is 5ft, and then Hypotenuse of the right angled triangle is AB. which is 13ft.
So, Sin A = 5/13
Tan A= Opposite/ Adjacent,
Opposite is CB, which is 5ft, adjacent is AC, which is 12ft.
So, Tan A= 5/12
Cos A= Adjacent/Hypotenuse,
we know adjacent is 12ft and that hypotenuse is 13ft.
So Cos A= 12/13
However Sec A is the inverse of cos A.
So, Sec A= 13/12.
There are several vehicles in a parking lot. Some of them are motorcycles
(with 2 wheels), and some are cars (with 4 wheels). There are 10 vehicles in
the lot, and there are 32 wheels. How many vehicles of each type are in the
lot?
Answer:
There are four motorcycles and six cars.
Step-by-step explanation:
Let m represent the number of motorcycles and c represent the number of cars.
Since there are ten vehicles in total, the sum of the number of motorcycles and the number of cars must total ten. Hence:
[tex]m+c=10[/tex]
And since each motorcycle has two wheels and each car has four wheels and there are 32 wheels in total:
[tex]2m+4c=32[/tex]
Solve the system of equations. First, we can divide the second equation by two:
[tex]m+2c=16[/tex]
From the first equation, we can subtract c from both sides:
[tex]m=10-c[/tex]
Substitute:
[tex](10-c)+2c=16[/tex]
Simplify:
[tex]10+c=16[/tex]
Therefore:
[tex]c=6[/tex]
There are six cars.
Using the modified equation:
[tex]m=10-c[/tex]
Solve for m:
[tex]m=10-(6)=4[/tex]
So, there are four motorcycles and six cars.