1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zzz [600]
2 years ago
6

Y + z-y; use y = 1, and z=3

Mathematics
2 answers:
Anastaziya [24]2 years ago
4 0
1+3=4 so 4-1=3 so your answer is 3
hjlf2 years ago
3 0

Answer: 3

Step-by-step explanation:

1+3-1= 3

You might be interested in
The blue figure is a translation of the black image. Write a rule to describe the translation.
vivado [14]

Answer:

The point at the Origin was moved down 4 and right 2

Step-by-step explanation:

5 0
3 years ago
In my pocket I have 8 quarters and 6 dimes. What fractional portion of the coins in my pocket are dimes
marin [14]

im pretty sure the answer is 3/4

7 0
3 years ago
Read 2 more answers
The table shows the results of an experiment in which subjects taking either a drug or a placebo either reported fatigue or did
Lady bird [3.3K]

Answer:

Therefore, the correct options are;

-P(fatigue) = 0.44

P(fatigue \left |  \right drug) = 0.533

--P(drug and fatigue) = 0.32

P(drug)·P(fatigue) = 0.264

Step-by-step explanation:

Here we have that for dependent events,

P(A \, and \, B)= P(A)\times  P(B\left |  \right A )

From the options, we have;

P(fatigue \left |  \right drug) = 0.533

P(drug) = 0.6

P(drug and fatigue) = 0.32

Therefore

P(drug and fatigue) = P(drug)×P(fatigue \left |  \right drug)  

= 0.6 × 0.533 = 0.3198 ≈ 0.32 = P(drug and fatigue)

Therefore, the correct options are;

-P(fatigue) = 0.44

P(fatigue \left |  \right drug) = 0.533

--P(drug and fatigue) = 0.32

P(drug)·P(fatigue) = 0.264

Since P(fatigue) = 0.44 ∴ P(drug) = 0.264/0.44 = 0.6.

4 0
3 years ago
A marine biologist monitors the population of sunfish in a small lake. He records 800 sunfish in his first year, 600 sunfish in
Colt1911 [192]

Answer:

Let's use the variable y to represent the number of years passed since the first year.

The population on the first year (y = 0) was 800

The population in the second year (y = 1) was 600.

The ratio in which the population decreased can be calculated as:

R = 600/800 = 0.75

This means that 600 is the 75% of 800, this also means that between the first year and the second year, the population decreased by the 25%

Now let's look at the ratio between the second and third year (y = 2), the population the third year was 450

Now the ratio is:

R = 450/600 = 0.75

Same as before, then we already can see that the population will decrease by 25% each year.

The generic exponential decay equation is:

f(y) = A*(1  - r)^y

where:

A = initial population, in this case, is 800

y = our variable, in this case, represents the number of years

r = the amount that decreases per each unit of our variable, this must be written in decimal form. In this case, we know that the population decreases by 25% each year, and 25% written in decimal form is 0.25

Also, (1 - r) = R, where R is the ratio we found earlier.

To do this, we just divide 25% by 100% to get (25%/100% = 0.25)

Then our equation will be:

f(y) = 800*(1 - 0.25)^y

f(y) = 800*( 0.75)^y

1) We want to predict when the population will be 200.

to do this, we set:

f(y) = 200 = 800*( 0.75)^y

and solve it for y.

(200/800) = 0.75^y

(1/4) = 0.75^y

Now we can use the relationship:

Ln(a^x) = x*ln(a)

Then let's apply Ln( ) in both sides to get

ln(1/4) = y*ln(0.75)

ln(1/4)/ln(0.75) = y = 4.8 years.

This means that 4.8 years after the first year, the population will be around 200.

2) The population in the 25 th year (this is 24 years after the first one, so we take y = 24) is:

f(24) = 800*(0.75)^(24) = 0.80

Around this point, we will have no more sunfish in the lake.

7 0
3 years ago
PLZZZZZ HELP I WILL GIVE BRAINLEST POINTS AND EXTRA POINTS
Greeley [361]

Answer:

a. Non proportional

b. Proportional

c. Non proportional

Step-by-step explanation:

Here, we want to determine if each situation is proportional or not

a) Non-proportional

This is because the amount y paid in a month will be;

y = 1400x + 150

Since the amount paid is not solely dependent on the number of months, then we do not have a proportional relationship

b) proportional

y = 3/4x

The value of y is dependent solely on that of x, so the relationship is proportional

c) non proportional

Since the value of y is not solely entirely dependent on x value, then the relationship is not proportional

6 0
3 years ago
Other questions:
  • A race car driver complete 30 laps in 15 minutes at a constant Speed
    5·1 answer
  • PPPLLLLEEEAASSSEEEE HHHEEEELLLLPPPPP!!!!!!!
    9·1 answer
  • Using the parkland formula, calculate the hourly rate of fluid replacement with lactated ringerâs solution during the first 8 ho
    6·1 answer
  • Which of the following ordered pairs is a solution of the given system of
    7·1 answer
  • Plz no links and a real answer plz
    6·2 answers
  • Find the value of the variable and BC, if B is between A and C.<br> AB = 5x, BC = 3x-1, AC = 47
    10·1 answer
  • Multiply the binomials and simplify your answer. (2x+9)(3x-5)
    8·2 answers
  • *Sorry, if I chose math as my subject which this is not what I want I only wanted a music one which is a special class to do so
    15·1 answer
  • Model with Math Find the distance from Alberto's horseshoe to Rebecca's horseshoe. Explain.​
    15·2 answers
  • A cafeteria serves lemonade that is made from a powdered drink mix. There is a proportional relationship between the number of s
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!