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
Alla [95]
3 years ago
8

Jason went to his local zoo where 20% of it's exhibits featured canines. If the zoo features 25 exhibits in total, then how many

of the zoo's exhibits feature canines? Round your answer to the nearest whole number if necessary. _____________
Mathematics
1 answer:
Ratling [72]3 years ago
7 0

Answer:

\frac{25}{100}=\frac{x}{20}

And if we solve for the value of x we got:

x = 20* \frac{25}{100}=5

So then we can conclude that the number of canines is 5 for this case

Step-by-step explanation:

For this case we know that the total number of canines is 25 and 20% represent the canines so we can apply the following proportional rule:

\frac{25}{100}=\frac{x}{20}

And if we solve for the value of x we got:

x = 20* \frac{25}{100}=5

So then we can conclude that the number of canines is 5 for this case

You might be interested in
10 more than a number w is -2.6
OLEGan [10]
What kind of question is that? That’s a statement.
6 0
2 years ago
Read 2 more answers
3x+2y=-15 2x=-18 elimination
Sergeeva-Olga [200]

Answer: (-9,6)


Step-by-step explanation:

3x+2y=-15

2x=-18

First solve for x in second equation

2x=-18

2x/2=-18/2

X= -9

Now substitute your x into first equation to find y

3(-9)+2y= -15

-27+2y=-15

2y= -15+27

2y= 12

2y/2=12/2

Y= 6

5 0
3 years ago
At a college, 69% of the courses have final exams and 42% of courses require research papers. Suppose that 29% of courses have a
laila [671]

Answer:

a) 0.82

b) 0.18

Step-by-step explanation:

We are given that

P(F)=0.69

P(R)=0.42

P(F and R)=0.29.

a)

P(course has a final exam or a research paper)=P(F or R)=?

P(F or R)=P(F)+P(R)- P(F and R)

P(F or R)=0.69+0.42-0.29

P(F or R)=1.11-0.29

P(F or R)=0.82.

Thus, the the probability that a course has a final exam or a research paper is 0.82.

b)

P( NEITHER of two requirements)=P(F' and R')=?

According to De Morgan's law

P(A' and B')=[P(A or B)]'

P(A' and B')=1-P(A or B)

P(A' and B')=1-0.82

P(A' and B')=0.18

Thus, the probability that a course has NEITHER of these two requirements is 0.18.

3 0
2 years ago
Express as a sum
zmey [24]

Answer:

I think it would be

Sums

1) a + -5

2) m + -n

Differences

1) 7 - -3

2) a - -5

Step-by-step explanation:

6 0
2 years ago
A father's age is thrice the sum of the ages of his two children. After five years, his age will be
jenyasd209 [6]

Answer: 45 years old

Step-by-step explanation:

<u>Given:</u>

- Father's age is thrice the sum of ages of his two children

- After five years, his age will be twice the sum of their ages

Let x be the two children's current age and 3x be the father's current age

<u>Solve:</u>

Set equation

3x + 5 = 2 ( x + 10 )

Expand parenthesis

3x + 5 = 2x + 20

Subtract 5 on both sides

3x + 5 - 5 = 2x + 20 - 5

3x = 2x + 15

Subtract 2x on both sides

3x - 2x = 15

x = 15

15 × 3 = 45 years old

Hope this helps!! :)

Please let me know if you have any questions

4 0
2 years ago
Other questions:
  • You work for a landscape company that just got a contract to re-mulch a park. The area that needs mulching is 30 feet by 60 feet
    15·2 answers
  • Solve for g.<br> -3 + 5 + 6g = 11 - 3g
    8·2 answers
  • The points on the graph show how much Chef Allen pays for different amounts of beans
    12·2 answers
  • A cone has a diameter of 6 cm and a height that is 3 times the diameter. Using 3.14 for pi, which of the following can be used t
    7·1 answer
  • Assume that 140 surveys are completed. Of those surveyed, 71 responded positively to effectiveness, 60 responded positively to s
    11·1 answer
  • Simplify-3/7(y-28)-1/21y
    9·1 answer
  • The perimeter of the quadrilateral is 43 centimeters. Find the length of each side.
    5·1 answer
  • In the expression 85x - 99 what represents the coefficient?
    10·2 answers
  • Divide.<br><br> 53.4 ÷ 6<br><br> 0.89<br> 8.90<br> 89.00<br> 890.00
    13·2 answers
  • Use the relationship between the angles in the figure to answer the question.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!