Step-by-step explanation:
Since y varies directly with x,
y = kx, where k is a real constant.
When x = 4, y = 32.
=> (32) = (4)k, k = 8.
Therefore when x = -2,
y = kx = (8)(-2) = -16.
please make this quick
Answer:
27
Step-by-step explanation:
3x3+2x9=27
(m+1)x=n-x
Solve for X, when m≠-2
Answer:
Step-by-step explanation: Factor
x
x
out of
m
x
+
n
x
m
x
+
n
x
.
x
(
m
+
n
)
=
p
x
(
m
+
n
)
=
p
Divide each term by
m
+
n
m
+
n
and simplify.
x
=
p
m
+
n
c−7.6=−4
Help asp
Pleaseeeee
Answer:
c = 3.6
Step-by-step explanation:
Felix's washing machine uses 6 gallons of water. How much water does it use in liters? A gallon is approximately 3.79 liters. Round to the nearest tenth.
Answer:
22.74 liters
Step-by-step explanation:
GIven data
Felix's washing machine uses 6 gallons of water
we are told that A gallon is approximately 3.79 liters
Hence if a gallon is approximately 3.79 liters
then 6 gallons of water will be x liters
cross multiply we have
x= 6*3.79
x= 22.74 liters
Hence 6 gallon will be 22.74 liters
How much money does Jeffrey need to buy a stuffed animal and a chess board?
teddy bear
$16.00
toy rocket
$67.00
chess board
$15.00
stuffed animal
$14.00
Answer:
$45
Step-by-step explanation:
the teddy is $16, the stuffed animal is $14 if you add it you get $30. Then you add the chessboard which is $15 all together is $45
14 is 33 1/2% of what number?
Answer:
41.79
Step-by-step explanation:
c = 14 * 100/33.5 = 1400/33.5 = 2800/67
= 41.79104
Andre must water his cactus plant every 8 days. He must also feed it every
41days. He watered and fed his cactus today.
In how many days will he water and feed his cactus on the same day again?
First you need to find the LCM of 8 and 41
The LCM is 328
So he will water and feed his cactus again in 328 days.
:) almost one year
Brainiest plz
What is the distance between the following points?
A 12
B 13
C 36
D 97
Using it's formula, the distance between these two points is given by:
[tex]\sqrt{97}[/tex].
What is the distance between two points?Suppose that we have two points, [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]. The distance between them is given by:
[tex]D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
For this problem, the points are:
(2,4) and (6,-5).
Hence the distance is given by:
[tex]D = \sqrt{(6 - 2)^2+(-5 - 4)^2} = \sqrt{97}[/tex]
More can be learned about the distance between two points at https://brainly.com/question/18345417
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Determine the intercepts of the line x-intercept
Answer:
I dont know if you meant where it intercepts the x line or y line so for the x line it intercepts at -7.5 but for y line it intercepts at 5.5
can someone help please
Answer: First is 6a-2b then it's 2a + b then it's 2b+a then it's 3 (a x b) and finally its 4b-a
Step-by-step explanation: Yeah, hope that helped. :)
The polynomial p(x) = 5x^3 - 9x^2 - 6x + 8 has a known factor of (x+1). Rewrite p(x) as a product of linear factors. (plz help)
Answer:
5x^3-9x^2-6x + 8
= (x+1)(5x-4)(x-2)
Step-by-step explanation:
Firstly, we need to get the other polynomial by which we can multiply the linear factor
What we have to do here is to divide the bigger polynomial by its linear factor
We can do this by long division, please check attachment for this
By kind division, the other factor is;
5x^2-14x + 8
So, we proceed to factorize this;
We have this as ;
5x^2-10x-4x+ 8
5x(x-2) -4(x-2)
= (5x-4)(x-2)
pls help due asap ....
Answer:
c
Step-by-step explanation:
Solve for t.
-18 = 6t
A. t = -3
B. t = -1/3
C. t = 12
D. t = 24
Answer:
A) t = -3
Step-by-step explanation:
-18 = 6t
divide both sides of the equation by 6
-18/6 = 6t/6
-18/6 = t
-3 = t
-3x + 2y = 8
Help pleases and thank you ...
a puppy gained 6 pounds during the month of September which has 30 days. on average how many pounds did the puppy gain each day select all that apply
need help with radical expressions
Answer:
what are the equations?
Step-by-step explanation:
PLEASE HELP! WILL MARK BRAINLIEST!!! REALLY APPRECIATE HELP!! TYSM!!
Calculate the slope of the table shown.
a) undefined
b) 0
c) 10
d) 20
Answer: 10
Step-by-step explanation:
We know the slope is Δy/Δx, so plug the numbers in, and you 10.
Erica starts the year with
$
200
in her savings account. She deposits another
$
75
into it every month. Darrell starts the year with
$
350
in his savings account. He deposits another
$
50
into it every month.
Based on these calculations, Erica would have a higher total amount of savings than Darrell at the end of one year.
What is multiplication ?Multiplication is an arithmetic operation used to find the product of two or more numbers. It is a way of adding a number to itself a certain number of times. For example, the product of 2 and 3 is 6, which is obtained by adding 2 to itself three times (2 + 2 + 2). Multiplication can be represented using the multiplication sign "×" or the dot symbol ".", and the result is called the product. The numbers being multiplied are called factors.
According to given information :
To compare the total amount of savings Erica and Darrell have at the end of one year, we need to calculate their savings at the end of the year based on their initial savings and monthly deposits. For Erica, the total amount of savings after one year can be calculated as follows:
Total savings for Erica = 200 + (75 x 12) = 200 + 900 = 1100 dollars
For Darrell, the total amount of savings after one year can be calculated as follows:
Total savings for Darrell = 350 + (50 x 12) = 350 + 600 = 950 dollars
Therefore, based on these calculations, Erica would have a higher total amount of savings than Darrell at the end of one year.
To know more about multiplication visit :
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Someone please help with the Determine Rate of Change Question I’m gonna fail please help me
9514 1404 393
Answer:
1 (dollar per subscription)
Step-by-step explanation:
a) The term "rate of change" refers to "slope" or "unit rate" on a graph. In a linear equation, it is the coefficient of the variable.
On the graph, it can be found by counting the vertical units that correspond to each horizontal unit. On this graph, a horizontal increase of 1 grid square (5 subscriptions) causes an increase of 1 grid square ($5) in earnings. The rate of change is ...
m = rise/run = $5/(5 subscriptions) = $1 per subscription
__
c) As indicated above, this will translate to the coefficient of the variable in the equation.
E = n + 45
How many degrees are inside of a convex hexagon? Remember to use (n-2)180.
180
360
720
1080
Plz can anyone calculate this equation for me. I dont have a
Calculator
Thank you so much
Plz give the right answer!
Answer:
R= 22537
Step-by-step explanation:
Suppose that 65% of high school students eat breakfast before going to school. A random sample of 500 high school students were surveyed. Let X = the number of high school students in a random sample of size 500 who eat breakfast before going to school.
1. Explain why X can be modeled by a binomial distribution even though the sample was selected without replacement.
2. Use a binomial distribution to estimate the probability that 300 or fewer high school students in the sample eat breakfast before going to school.
3. Justify why X can be approximated by a Normal distribution.
4. Use a Normal distribution to estimate the probability that 300 or fewer high school students in the sample eat breakfast before going to school.
Answer:
1.) very large sample size
2.) 0.11326
3.) np and n(1-p) should be ≥ 10
4.) 0.010809
Step-by-step explanation:
Given :
p = 0.65 ; n = 500
2.)
P(x ≤ 300)
P(x =x) = nCx * p^x * (1 - p)^(n - x)
Using a binomial probability calculator :
P(x ≤ 300) = 0.11326
To justify why if it can be approximated using a normal distributon :
np and n(1-p) should be ≥ 10
np = 500 * 0.65 = 325
n(1-p) = 500(1 - 0.65) = 175
4.) probability using normal distribution estimate:
Mean, m = np = 500 * 0.65 = 325
Standard deviation, s = sqrt(n*p*(1-p)) = sqrt(500*0.65*(1 - 0.65)) = sqrt(113.75) = 10.665
x ≤ 300
Correction:
x = x + 0.5 = 300 - 0.5 = 300.5
P(x ≤ 300.5)
Zscore = (x - m) / s
Zscore = (300.5 - 325) / 10.665
Zscore = - 24.5 / 10.665
Zscore = - 2.297
P(Z ≤ - 2.297) = 0.010809
X can be modeled by a binomial distribution even though the sample was selected without replacement because the sample size is too large, and the probability that 300 or fewer high school students in the sample eat breakfast before going to school is 0.010809.
Given :
Suppose that 65% of high school students eat breakfast before going to school. A random sample of 500 high school students was surveyed. Let X = the number of high school students in a random sample of size 500 who eat breakfast before going to school.1) X can be modeled by a binomial distribution even though the sample was selected without replacement because the sample size is too large.
2) The formula for the binomial distribution is given by:
[tex]\rm P (x=x)= \; ^nC_x \times p^x \times (1-p)^{n-x}[/tex]
Now, substitute the known terms in the above formula.
[tex]\rm P (x\leq 300)= \; ^{500}C_x \times (0.65)^x \times (1-0.65)^{500-x}[/tex]
Simplify the above expression.
[tex]\rm P(x \leq 300)=0.11326[/tex]
3) Now, the value of np and n(1 - p) is given below:
np = 500 [tex]\times[/tex] 0.65 = 325
n(1 - p) = 500 [tex]\times[/tex] (1 - 0.65) = 175
X can be approximated by a Normal distribution because the value of np and n(1 - p) is greater than or equal to 10.
4)
First, determine the standard deviation.
[tex]\rm \sigma = \sqrt{np(1-p)}[/tex]
[tex]\rm \sigma = \sqrt{500\times 0.65 \times (1-0.65)}[/tex]
[tex]\rm \sigma = 10.665[/tex]
Now, the z-score can be calculated by using the formula:
[tex]\rm z =\dfrac{X-\mu}{\sigma}[/tex]
[tex]\rm z =\dfrac{300.5-325}{10.665}[/tex]
z = -2.297
So, the probability that 300 or fewer high school students in the sample eat breakfast before going to school is given by:
[tex]\rm P(Z\leq -2.297) = 0.010809[/tex]
For more information, refer to the link given below:
https://brainly.com/question/795909
Byron lives where the people trade goods they produce for other things they need. He has some fish that he has caught, and he wants to trade them for as many bananas as he can. He asks around to find out what is being traded and finds out the following:
Five fish are worth the same as two loaves of bread.
Six oranges are worth the same as two melons.
One loaf of bread is worth the same as one banana plus three oranges.
Four loaves of bread are worth the same as fourteen oranges.
Question: How many bananas can Byron get with five fish?
Answer:
Step-by-step explanation:
Five fish equals two bread, and two bread equals two bananas (plus however many oranges), therefore he can get two bananas.
if you can tell me the answer please do i need help besties
Answer:
51
Step-by-step explanation:
8.5/1
and
x/6
cross multiply
51=x
divide 3.64 x 10(3) by 3.2 x 10 (4)
Step-by-step explanation:
3.64 x 10(3) by 3.2x 10(4)
v v
3.64 x 30 by 3.2 x 40
v v
109.2 divide 128= 0.85
(hope this was what you were looking for)
A pair of shoes usually sells for $60. If the shoes are 20% off, and sales tax is 7%, what is the total price of the shoes, including tax?
Answer:
$50.88
Step-by-step explanation:
Adjusted Price without tax = 0.8 * 60,
0.8 * 60 = 48,
With Tax = 1.06 * 48,
1.06 * 48 = 50.88
∴ New Price = 50.88
Answer:
Its $12.84
Step-by-step explanation:
20 percent of $60 is 12, and the sales tax is $.84, so you add those two together and you get $12.84! Hopes this helps and good luck!
3x – 2y = 24
x + 2y = 48
x =
y =
8t=−32
Help a sister out
Answer:
t=-4
Step-by-step explanation:
Answer:
t = -4
Step-by-step explanation:
divide each term by 8 and simplify
Olivia has a points card for a movie theater. She receives 80 rewards points just for signing up. She earns 2.5 points for each visit to the movie theater. She needs at least 105 points for a free movie ticket. Write and solve an inequality which can be used to determine xx, the number of visits Olivia can make to earn her first free movie ticket.
Answer:
10 visits
Step-by-step explanation:
According to the scenario, calculation of the given data are as follows,
Rewards for signing up = 80 points
Reward per visit = 2.5 points
Total points needed = 105
Let, number of visits = x
So, we can calculate number of visits by using following formula,
80 + (2.5 × X) = 105
2.5X = 105 - 80
2.5X = 25
X = 25 ÷ 2.5
X = 10 visits.
Hence, Olivia needs to make 10 visits in order to earn a free movie ticket.
What type of number?
Answer:
It is an irrational Number cuz that number cannot be in fraction form and it is not a perfect square..