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
Juli2301 [7.4K]
3 years ago
9

Help Please

Mathematics
1 answer:
fredd [130]3 years ago
7 0
\left \{ {{x+y=28} \atop {4x+3y=100}} \right. 
 \left \{ {{x=28-y} \atop {4(28-y)+3y=100}} \right. 
112-y=100, 12=y,  x=16, y=12
You might be interested in
Calculate the work done.
Dmitriy789 [7]

Answer:

hmmm..not sure

Step-by-step explanation:

3 0
4 years ago
Read 2 more answers
Can someone help me pls ?
miss Akunina [59]

Answer:

so the equation would be 4x (because he buys 4 books) + 0y (because he didn't buy any CDs) = 32 (or it could be $32). The slope would be 4.

Step-by-step explanation:

7 0
3 years ago
If A+B = 76 & A -B = 38 What is A/B?
Igoryamba
A+B=76\\
A-B=38\ \ --->\ \ A=38+B\\\\
38+B+B=76\\
38+2B=76\ \ | subtract\ 38\\2B=38\ \ \ | divide\ by\ 2\\
B=19\\A=57\\\\
\frac{A}{B}=\frac{57}{19}=3
3 0
4 years ago
Read 2 more answers
Help with math please?<br> I got C but Im not sure If im correct.
KonstantinChe [14]

Answer:

D. angle 7 and angle 5.

Step-by-step explanation:

It is actually option 'D.' This is because angle 7 and angle 5 are vertical angles; vertical angles are always congruent.

7 0
3 years ago
The perimeter of a triangle is 16 to the square root of 7 feet. If the two sides measure the square root of 343 feet and the squ
Taya2010 [7]

Answer:the length of the third side is 4√7

Step-by-step explanation:

The perimeter of a triangle is 16 to the square root of 7 feet. This is expressed as

Perimeter = 16√7 feet

The perimeter of a triangle is the sum of the length of the three sides of the triangle.

If the two sides measure the square root of 343 feet and the square root of 175, which are expressed as √343 and √175, the third length would be

16√7 - (√343 + √175)

Expressing √343 as a radical, it becomes 7√7

Expressing √175 as a radical, it becomes 5√7

7√7 + 5√7 = 12√7

Therefore, the third length would be

16√7 - 12√7 = 4√7 feet

5 0
4 years ago
Other questions:
  • What graph passes the vertical line test?
    10·2 answers
  • 5. mc035-1.jpg What is the area of the kite? 135 m2 216 m2 90 m2 108 m2
    6·1 answer
  • 15 Points!!! Easy 7th Grade Math
    10·2 answers
  • How do I factor this 9x^2 -64
    11·1 answer
  • What is 3.638 x 5.257​
    5·1 answer
  • Which percent is equivalent to 1/2
    12·1 answer
  • In a direct variation, y = 12 when x = 6. Write a direct variation equation that shows the relationship between x and y.
    13·1 answer
  • Given the functions, fx) = 6x + 2 and g(x) = x - 7, perform the indicated operation. When applicable, state the domain
    5·1 answer
  • 49^x/4-5 = 343^x/3 what does x equal
    5·1 answer
  • 5x + 2y = 29<br> 8x - y = 51<br> Simultaneously
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!