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
kogti [31]
3 years ago
11

Solving systems of equations using substitution p=q+3 4p+3q= -30

Mathematics
1 answer:
patriot [66]3 years ago
5 0
4(q+3) + 3q = -30
4q +12 + 3q = -30
7q+12= -30
7q = -12-30
7q = -42
q = -6
p = -3

You might be interested in
Find the slope of the line that passes through (10, 5) and (5, 1)
PSYCHO15rus [73]

Answer:

4/5

Step-by-step explanation:

points: (10,5), (5,1)

(y2-y1)/(x2-x1)

= (5-1)/(10-5)

= 4/5

Hope this helps!      :3

plz mark as brainliest!

4 0
3 years ago
How much would $500 invested at 9% interest compounded annually be
dalvyx [7]

Answer:

$705.79.

Step-by-step explanation:

The formula is

Amount = P(1 + r/100) ^ t  so

Amount = 500 (1 + 9/100)^4

= $705.79.

8 0
3 years ago
Read 2 more answers
The average speed of a car on a stretch of interstate is 70 miles per hour. Convert this rate to feet per second.
polet [3.4K]

Answer:

<h3>102. 66 feet / Second</h3>

Step-by-step explanation:

To do conversion change miles into feet and hour into second.

One foot is 5280 feet

And an hour is 3600sec

70 miles / Hour

70 * 5280feet / 3600 second

369600 feet / 3600seconds

Then simplify

102. 66 feet / Second

6 0
2 years ago
Read 2 more answers
30*x=204. What is x?
IgorC [24]

Answer: x = 6.8

or x = 102/15

Step-by-step explanation:

30x=204

204/30

simplify!

3 0
3 years ago
Read 2 more answers
When angles are complementary, the sum of their measures is 90 degrees.Two complementary angles have measures of 2x-10 degrees a
Mariana [72]

Complementary angles are those angles whose sum is 90 degree.

The measurement of two complementary angles are

(2x-10), (3x-10)

There sum have to be 90 degree. That is

2x-10+3x-10 = 90

Combining like terms ,

5x - 20 = 90

Moving 20 to right side

5x=110

Dividing both sides by 5

x =22

So the measurement of the angles are

2*22-10 , 3*22-10  \\&#10;34 degree,  56 degree

6 0
3 years ago
Other questions:
  • Help pleaseeeeee thanks so much
    11·2 answers
  • The value 5 is an upper bound for the zeros of the function shown below. f(x)=x^4+x^3 -11x^2-9x+18
    15·2 answers
  • There are 28 students in the class. Sixteen of those students are girls. What percentage of the class is girls?
    15·1 answer
  • What do you know about the slopes of lines that are parallel? Explain
    11·1 answer
  • Hii pls answer it guys plz help me​
    12·1 answer
  • Please answer i will give you brailest!!!!!!!!1
    9·2 answers
  • F(x)=3x^2+2 the quadratic function g(x) is the function f(x) stretched vertically by a factor of 4. Enter the equation of g(x) i
    5·1 answer
  • I need help with this math question plz look in the pic
    11·1 answer
  • Pleas help!<br><br> WILL THANKS YOUR ACCONT and MARK BRAINLIEST
    12·1 answer
  • The graph of F ( x ) = 4/x2 - 2x - 3 is shown <br> for which values of X is f ( x ) decreasing
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!