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
Alinara [238K]
3 years ago
9

15 points! please answer all questions

Mathematics
1 answer:
Anton [14]3 years ago
4 0
1. A.
x parrot fish + y triggerfish = 320 total fish. 
y = 7x shows that there are 7 times as many triggerfish.
2. C
x + y shows a total score of 425.
y = 2x - 70 shows that Michael's score, y, is 70 less (minus) than twice Kathryn's 
3. write two equations
x + y = 27 total feet
2x + 3 = y
Substitute 2x + 3 for y in the first equation
x + (2x + 3) = 27
3x + 3 = 27
3x = 24
x = 8
Substitute 8 in to either equation to find the other length.
8 + y = 27
y = 19
The shorter piece is 8 and the longer piece is 19
4. x + y = 3200 people -> y = 3200-x
8x + 12y = 33,040 dollars
8x + 12(3200 - x) = 33040
8x + 38400 - 12x = 33040
-4x = -5360
x = 1340 (1340 children)
1340 + y = 3200
y = 1860 adults
5. I don't think the numbers for this were put in correctly because I get a decimal and a negative number when I solve for it but hopefully if you do get the correct cost/amount of coins you will understand this well enough to do it on your own. Hope I helped!


You might be interested in
A train traveled 210 miles in 3.5 hours to its first stop. It then continued on traveling another 130 miles in 2.5 hours. Wut is
vitfil [10]

Answer:

if you are adding the hours in total it is 6 hours but if you are adding the miles it is 340 miles

Step-by-step explanation:

6 0
3 years ago
is graph shows the number of dogs that were treated everyday over the past year. What can you tell about the average number of d
polet [3.4K]

Could you show the graph please?

5 0
3 years ago
Read 2 more answers
Una persona va a solicitar un prestamo en el banco de 35,000 pesos, con una tasa de interes del 3% va a pagar en 5 años cual ser
Nuetrik [128]

Respuesta:

5250

Explicación paso a paso:

Dado que :

Importe del préstamo, principal, p = 35000

Tasa de interés, r = 3% = 0.03

Tiempo, t = 5 años

Usando la fórmula de interés simple:

Interés = principal * tasa * tiempo

Interés = 35000 * 0.03 * 5

Intereses = 5250 pesos

8 0
3 years ago
An 18ft ladder leans against a house, reaching a point 14ft above the ground. How far is the foot of the ladder from the bottom
Arisa [49]

Answer: a^2+b^2=c^2

Step-by-step explanation: (18^2=14^2+c^2)=324=196+c^2

324-196=128 and the square root of 128 is 8 radical 2 or in decimal form 11.31

5 0
3 years ago
Read 2 more answers
What is the answer to this question?
iragen [17]

Answer:

D

Step-by-step explanation:

so they ran the trial ten times so now you have to aks how many times did they get heads

which would be 2/10 times

you want the accuracy of which they got so divide 2/10

we know the probability of getting heads is 50%

so when you calulate it, it will give you 0.2 use the percent button and get 0.1

8 0
3 years ago
Other questions:
  • Ratios that will form a proportion with 2 over 3
    13·1 answer
  • Find an equation of the sphere that passes through the origin and whose center is (â2,2,3). be sure that your formula is monic.
    13·1 answer
  • How tall is the triangle if the base is 10 inches and has an area of 36 inches? -my answer is Wrong so don't be bothered by my w
    12·1 answer
  • Which postulate proves the two triangles congruent?
    13·1 answer
  • Write an equation for Greg ordered some books online for $6 each. He paid a total of $3 for shipping. The total cost of the purc
    6·1 answer
  • 1). The ratio of boys to girls in a class is 2:1. If there are 8 girls, how many boys are there?
    14·1 answer
  • |x−4| if x&gt;4<br><br>please help me!!<br><br>please!!
    6·1 answer
  • Solve for x -8x = -48
    14·1 answer
  • An 8-pack of beaded necklaces costs $7.60. What is the unit price?
    11·1 answer
  • Write an expression that mean "eight less than product of seven and X".​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!