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
Margaret [11]
3 years ago
13

Please Help, Lots of points

Mathematics
1 answer:
Andrei [34K]3 years ago
3 0

Answer:

9 cats

Step-by-step explanation:

x = cat

y = dog

Set up equations.

x + y = 30

4.5x + 8.5y = 219

Multiply first equation by 4.5 and subtract.

4.5x + 4.5y = 135

-(4.5x + 8.5y = 219)

-4y = -84

y = 21

Substitute this y value into the first equation

x + y = 30

x + 21 = 30

x = 9

You might be interested in
Two f-18s are catapulted off an aircraft carrier and fly on courses that diverge at a 60° angle. if each flies at a constant rat
kkurt [141]
Answer: The will be 1200 miles apart after 2.4 hours.

First draw a picture of an angle of 60 degrees. The vertex is the starting point of the plane and they are flying away from it.

If you drew points for the new positions of the plane and connected them, you would have triangle. The planes are flying at the same speed, so they would be isosceles triangles. And since the vertex angle is 60 degrees, the other angles have to be 60 as well. This makes it an equilateral triangles, meaning all the sides are the same.

So the distance between the planes is equal to the distance that they have flow.

Simply divide 1200 by 500 to get 2.4 hours.
5 0
4 years ago
X-1/3=6 what is this as an improper fraction
Andru [333]

Answer:6 1/3 or 19/3

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
find the perimeter and area of the polygon with the given vertices. P(-3,4), Q(1,4), R(-3,-2), S(3,-2)
Elza [17]

Answer:

OMG!!!!!!!!!OMG!!!OMG

5 0
4 years ago
HELP URGENT BRAINLY + 5 STAR RATING
Zanzabum
X<0
y > 0
so x is negative and y is positive
Quad. II

answer
Quadrant II
7 0
3 years ago
Read 2 more answers
Jake rewrites the expression 81x4 – 1 as a difference of squares so he can factor it. Which answer choice shows how Jake could r
Nuetrik [128]

Answer: (9x^2)^2 -1^2

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • 16 - 2z/ 3 - 4 when a equals 18
    8·1 answer
  • Which is true? a 399.019 &gt; 399.00 b 22.9909 = 22.991 c 9.3291 &gt; 9.3301 d 0.7351 &gt; 0.7411
    6·1 answer
  • It took the rocket 3 seconds to climb to 927 meters. Calculate the speed .
    12·1 answer
  • Which equation is equivalent to 1/5x - 3 = 2/3
    9·1 answer
  • Write an equation in slope-intercept form of the line.
    6·1 answer
  • Find the answer to this question<br> 4.2÷0.07
    15·2 answers
  • WHAT IS THE VALUE OF R IN THE EQUATION? -1.5(4-R)=12
    9·2 answers
  • Solve the inequality 2(n + 3) - 4 &lt; 6
    10·1 answer
  • Help with question in picture​
    8·1 answer
  • Solve the following equation: -5 = 15x​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!