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
Daniel [21]
3 years ago
10

2p+3q=-7 3p+5q=-12 What is the solution in an ordered pair?

Mathematics
1 answer:
natita [175]3 years ago
8 0

Answer:

(p, q ) = (1, - 3 )

Step-by-step explanation:

2p + 3q = - 7 → (1)

3p + 5q = - 12 → (2)

Multiplying (1) by 3 and (2) by - 2 and adding the result will eliminate p

6p + 9q = - 21 → (3)

- 6p - 10q = 24 → (4)

Add (3) and (4) term by term to eliminate p

0 - q = 3

-q = 3 ( multiply both sides by - 1 )

q = - 3

Substitute q = - 3 into either of the 2 equations and solve for p

Substituting into (1)

2p + 3(- 3) = - 7

2p - 9 = - 7 ( add 9 to both sides )

2p = 2 ( divide both sides by 2 )

p = 1

You might be interested in
HELP ASAP PLEASE ////////
Neporo4naja [7]

Answer:  1.25 or 1 ¼

Step-by-step explanation:

This is because volume is (length x width x height).

So you would take (5 ½ times 2 ½ time 9).

This would give you 123.75 or 123 ¾.

Then you would take (125 - 123.75).

4 0
3 years ago
Read 2 more answers
A man is in a treehouse 10 feet above the ground. He is looking at the top of another tree that is 22 feet tall.The bases of the
Soloha48 [4]

Answer:

22 degrees.

Step-by-step explanation:

Please find the attachment.

We have been given that a man is in a tree-house 10 feet above the ground. He is looking at the top of another tree that is 22 feet tall.The bases of the trees are 30 feet apart.

To find the angle of elevation from the man's feet to the top of the tree, we will use tangent because we know adjacent side and opposite side to angle x.

\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}

\text{tan}(x)=\frac{12}{30}

Now, we will use arctan or inverse tan to solve for x as:

x=\text{tan}^{-1}(\frac{12}{30})

x=21.8014094^{\circ}

Upon rounding to nearest degree, we will get:

x\approx 22^{\circ}

Therefore, the angle of elevation from the man's feet to the top of the tree is approximately 22 degrees.

5 0
4 years ago
The city of Austin has a bridge that is famous for housing the largest urban bat colony in the
Rama09 [41]

Answer:

12.5 tons

Step-by-Step Explanation

There are 2 million bats and they eat 10 tons so 1 million bats would eat 5 tons half of 5 is 2.5 so if there where 2.5 million bats then you would increase the number of insects by half of a half or 2.5 because the number increased by half a million and 1 million bats eat 5 tons. Hope this was helpful :D

3 0
3 years ago
Help help help help please
dolphi86 [110]

Answer:

113

Step-by-step explanation:

please mark me as brainlest

7 0
3 years ago
BRAINLIEST IF CORRECT <br><br> 1.0
masya89 [10]
1. Math
(Visible from graph, or you can count it out )

2. Science
(On the graph, science had the lowest score with 20, while math’s lowest was 30)

3. Count one on each side until you reach the middle. You end up in the “70” category.

4. Count one on each side until you reach the middle. You end up in the “80” category.

6 0
3 years ago
Other questions:
  • Cathy cakes read 22 pages during a 30 minute study hall. How many pages would she read in 45 minutes
    14·1 answer
  • Calculate:
    7·1 answer
  • I need some help...............
    7·1 answer
  • Several thousand teens were asked one question, "What do you think are the chances you will be married in the next ten years?" T
    8·2 answers
  • What number is 4 time another. The sum of the reciprocals is 15/4. find the numbers
    7·1 answer
  • Pleaseeeeeeee help meee​
    9·1 answer
  • Please someone help mee!!
    7·2 answers
  • HELP WITH MATH PLEASE
    6·1 answer
  • Length (in) of shoe box
    9·2 answers
  • use green's theorem to evaluate the line integral along the given positively oriented curve. c 9y3 dx − 9x3 dy, c is the circle
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!