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
Vikki [24]
3 years ago
9

Solve the problems using a system of equations.

Mathematics
2 answers:
evablogger [386]3 years ago
7 0

step-by-step explanation:1true 22

vampirchik [111]3 years ago
6 0

Answer:

the answer is 20 questions.

Step-by-step explanation:

:)

You might be interested in
Please help with 6 and 7
Ilya [14]

Answer:

6. The number is -5

7. The two numbers are 10 and 11

Step-by-step explanation:

Question six can be re-worded to create the following expression:

-2=\frac{4x+10}{5}

Solve for x to find the number:

-2=\frac{4x+10}{5}\\-10=4x+10\\-20=4x\\\frac{-20}{4} = x\\-5 = x

Question seven can be solved by first listing the constraints (assuming x is smaller than y):

  1. x and y are less than 20
  2. x + 1 = y
  3. 3x - 8 = 2y

To get the numbers, we can create a system of linear equations. First, solve for y in each expression:

y = x+1

2y = 3x-8\\y = \frac{3}{2}x - 4

Solve for x:

x+ 1 = \frac{3}{2}x - 4\\x + 5 = \frac{3}{2}x\\5 = \frac{3}{2}x - x\\5 = \frac{1}{2}x\\10 = x

Solve for y:

y = x + 1\\y = 10 + 1\\y= 11

4 0
2 years ago
Read 2 more answers
What is a number in which the digit 7 is worth 70
eduard

Answer:

Tens, 70, 7x10'1

6 0
3 years ago
A rectangle is drawn so that the width is 5 feet shorter than the length. the area of the rectangle is 36 square feet. find the
velikii [3]
 w x L  = 36 

w =  L- 5 

L x  ( L-5 ) = 36 

L^2 -5L -36 =0 

<span>Use the quadratic formula

L=  - b + radical b^2  - 4 (a)(c)  divided    2.a 

L= 5 + 13  / 2  = 18 /2  =9</span>
5 0
3 years ago
35 POINTS!!!<br>Questions 14-20 please help!
mr_godi [17]
14. sometimes, you can have a 45-45-90 or 60-30-90 triangle (degrees)
sometimes true
15. always
16. never, paralellogram has 2 pairs of paralell sides, trapezoid has 1
17.always
18. sometimes
19. always
20. always

3 0
3 years ago
Rick and Jon start walking from the same location. Rick starts 15 seconds before Jon and walks at a rate of 3 feet per second. J
stepan [7]

Answer:

hfjf fnnc v jud dbhj  ejem emd  jfbf

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • I NEED HELP ASAP!! did i do correct??
    7·1 answer
  • Zach bought two new jet skis for 15,490. He will make 36 equal payments . How much will each payment be?
    14·1 answer
  • Reba needs to simplify the expression below. 6 and one-half + 3.5 times 2 minus 7 divided by 3 Which operation should she perfor
    7·2 answers
  • a plate has a raduis of 3 inches what is the best approximation for the circumference of the plate ? use 3.14 to approimate pi.​
    15·1 answer
  • A coin is tossed 40 times and shows heads 23 times. Calculate the experimental probability of the coin showing heads.
    6·1 answer
  • What is 5(7-2)-4x4????
    13·2 answers
  • 7+3/5b=7/10b what is b
    8·1 answer
  • 2. Which continent is estimated to have more than 5.31 billion people by 2050? To solve, find what percent 5.31 billion is of 9
    10·1 answer
  • Find the unit rate
    12·1 answer
  • Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah, a total
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!