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
Nezavi [6.7K]
3 years ago
6

Part of the population of 7000 oak in a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that four

of them are infection. How many elks are infected?
Mathematics
1 answer:
lbvjy [14]3 years ago
7 0

Answer:

Answer is 560

Refer below.

Step-by-step explanation:

4/50=x/7000

50x=28000

X=560

You might be interested in
HELPP now plssss!!!!!
Bumek [7]
So go down and up then look it up on the web so you can look good in it that really helps
7 0
2 years ago
A standard die is rolled 360 times in hopes of rolling a 5 or 6. So the probability of success is p=1/3. Find the standard devia
lana [24]

Answer: option 1 is the correct answer

Step-by-step explanation:

Number of times for which the die was rolled is 360. It means that our sample size, n is 360.

The probability of rolling a 5 or a 6 is 1/3. It means that probability of success,p = 1/3. The probability of failure,q is

1 - probability of success. It becomes

1 - 1/3 = 2/3

The formula for standard deviation is expressed as

√npq. Therefore

Standard deviation = √360 × 1/3 × 2/3

= √80 = 8.9443

Standard deviation is approximately 8.9

4 0
3 years ago
You and your sister went to the store. Your mom gave you $35 to buy a few things. The store charges $4 an hour for parking plus
Sav [38]

Answer:6.5

Step-by-step explanation:35-15=20, 20-12=8, 8-1.50=6.5

8 0
3 years ago
Evaluate the Expression z(z-7) when z=10
Alchen [17]

Answer:

30

Step-by-step explanation:

z(z-7)

Let z= 10

10(10-7)

Parentheses first

10 (3)

Multiply

30

3 0
2 years ago
Read 2 more answers
The snack bar at your school has added sushi to its menu. The ingredients for one roll include sushi​ rice, seaweed​ sheets, cuc
amid [387]

Answer:

The answer si:  

- 16 servings - 6 oz of salmon

- 24 servings - 9 oz of salmon

- 80 servings - 30 oz of salmon

- 100 servings - 37.5 oz of salmon

1 roll is 8 servings and it is also made of 3oz of smoked salmon. That means that 3oz of smoked salmon is needed fo 8 servings.

Now, let's made some proportions:

16 servings:

3 oz is for 8 servings, how much oz is for 16 servings:

3 : 8 = x : 16

x = 3 · 16 ÷ 8 = 6 oz

24 servings:

3 oz is for 8 servings, how much oz is for 24 servings:

3 : 8 = x : 24

x = 3 · 24 ÷ 8 = 9 oz

80 servings:

3 oz is for 8 servings, how much oz is for 80 servings:

3 : 8 = x : 80

x = 3 · 80 ÷ 8 = 30 oz

100 servings:

3 oz is for 8 servings, how much oz is for 100 servings:

3 : 8 = x : 100

x = 3 · 100 ÷ 8 = 37.5 oz

5 0
3 years ago
Other questions:
  • From 145 pounds to 132 pound percent decrease
    9·2 answers
  • Can I please have help on 9-11?
    15·1 answer
  • If the coefficient a in the general quadratic equation is equal to 9, what is the focal length for the
    6·1 answer
  • Which number to the point D represent on a number line? A. square root 35 B. square root 75 C. square root 95 D. square root 115
    15·1 answer
  • Plot a point C that divides the segment into the<br> ratio AC:AB= 3/4
    7·1 answer
  • Plz help I need by tonight
    10·1 answer
  • Solve for x in the following equation: -4+6x=8 <br> A. x=-2<br> B. x=4<br> C. x=2<br> D. x=-6
    8·2 answers
  • Can someone answer this for me quickly!
    10·2 answers
  • The sum of three numbers is 254.772. We can get the biggest and smallest numbers if we move the decimal point in the middle numb
    5·1 answer
  • Which graph shows the solution to the system of linear inequalities?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!