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Natalija [7]
3 years ago
5

Martha opens a new cell phone store. She spends $24,500 purchasing inventory to sell, buying furniture, and advertising her busi

ness. The table below shows how Martha calculates various costs and profits in her business.
Mathematics
1 answer:
dexar [7]3 years ago
7 0

Answer:500

Step-by-step explanation:

Step by step

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4. need help with this question - give the brainliest answer whoever answer it fully
kondaur [170]
1. Monday diagram probability of no rain will be 0.45
2. Tuesday diagram probability of no rain will be 0.75 and rains will be 0.25
7 0
3 years ago
Classify the following random variables as discrete or continuous:X: the number of automobile accidents per year in Virginia. Y
Elena-2011 [213]

Answer:

X: discrete

Y: continuous

M: continuous

N: discrete

P: discrete

Q: continuous

Step-by-step explanation:

First, we have to know the difference between discrete and continuous variables:

  • Discrete variables are those that represent things that are counted, 3 red cars, 2 chickens, etc.. They take positive integer values, {0, 1, 2, ..., n}, being [0, n] the interval from which the variable takes values, that means, there is a finite number of possible values.
  • Continuous variables are those that represent things that are measured, 3.56 km of railway laid, 5.77 l of paint used. They take positive real values, that means that in the interval used for the variable there are infinite possible values.

Now, we classify each variable:

  1. The number of automobile accidents per year in Virginia (X) is a discrete variable, as there can't be half an accident, one counts how many accidents are per year to know X.
  2. The length of time to play 18 holes of golf (Y) is a continuous variable, as it can take 2 hours, or 2.5 hours, or 2 hours, 30 minutes, 2 seconds, one measures how long it took to play 18 holes to know Y.
  3. The amount of milk produced yearly by a particular cow (M) is a continuous variable, as one measures how much milk was produced to know M.
  4. The number of eggs laid each month by a hen (N) is a discrete variable, as one counts how much eggs were laid to know N.
  5. The number of building permits issued each month in a certain city (P) is a discrete variable, as one counts how many permits were issued to know P.
  6. The weight of grain produced per acre (Q) is a continuous variable, as one measures the weight per acre to know Q.
3 0
3 years ago
What is the substitution should be used to rewrite x^8 -3x^4 + 2 =0
fenix001 [56]
Get into ax²+bx+c=0 form

subsitute u=x⁴

x⁸-3x⁴+2=0
(x⁴)²-3(x⁴)+2=0
u²-3u+2=0
factor
(u-2)(u-1)=0
set to zero

u-2=0
u=2

u-1=0
u=1


wait, u=x⁴

2=x⁴
\sqrt[4]{2}=x

1=x⁴
+/-1=x


the subsitution is u=x⁴
and the possible values for x are -1, \sqrt[4]{2}=x, and 1
7 0
3 years ago
PLEASE HELP ME PLEASE HELP ASAP THANKS (brainlest)
zloy xaker [14]

Answer:

0.999 units

Step-by-step explanation:

D=

\frac{3.14}{\pi}

D=0.9994930426

4 0
3 years ago
Read 2 more answers
What happens to the center of a figure when it is dilated about the origin?
alina1380 [7]
There are 2 answers for this in my opinion
1. nothing happens because its still in the origin and that won't change
2. depending on which way you turn it the points will change based on that

so if you know how to use a graph you should be good
7 0
3 years ago
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