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
goldenfox [79]
2 years ago
10

If two equations are 3x + 2y = 14; 5x + 3y = 12, then the value of 5x – y is

Mathematics
1 answer:
musickatia [10]2 years ago
6 0

Answer:

-124

Step-by-step explanation:

3x + 2y = 14 (×3) → 9x + 6y = 42

- → x = -18

5x + 3y = 12 (×2) → 10x + 6y = 24

3(-18) + 2y = 14

-54 + 2y = 14 → 2y = 14 + 54 = 68 → y = 68/2 = 34

5x - y = 5(-18) - 34 = -90 - 34 = -124

You might be interested in
Can someone help I’m confused
PtichkaEL [24]
Since the slope is -2 we know that m=-2. Now use the standard form of y=mx+b and plug in the coordinates (-8,2). We know y=2, x=-8, and m=-2. Therefore we get 2=-2(-8)+b. Now solve for b and you get -14. Therefore, the equation is y=-2x-14.
Hope this helped!
4 0
2 years ago
The product of 4x and 0 is:<br> 4x<br> 4<br> 0
ki77a [65]

Answer: <em>0</em>

Step-by-step explanation:

<em>Simply the answer is </em><em>0</em><em> because anything multiplied by </em><em>0</em><em> will result in </em><em>0</em>

<em>4x(0) =</em><em> 0 </em>

7 0
3 years ago
To find the Volume of a Cylinder, we use the formula:
kolezko [41]

Answer:

the correct anser is B

Step-by-step explanation:

Calculate the area of the shape on all the corners

6 0
3 years ago
Calculate the specific heat of a metal (in calories/gram-degree C) from the following data. A container made of the metal has a
Arisa [49]

Answer:

<h2>The specific heat of the metal is 0.274951 calories/gram-degree C.</h2>

Step-by-step explanation:

Let, the specific heat of the container is x calories/gram-degree C.

The container and water gains (18 - 15) = 3 degrees C.

Hence, the transfer of heat is 3(18.1\times1000\times1) + 3(3.77x\times1000).

The metal, which is dropped in the water, losses (164 - 18)= 144 degrees C.

Hence, the transfer of heat is 144\times 1.45\times1000x.

As per the given conditions,

3(18.1\times1000) + 3(3.77x\times1000) = 144\times1.45\times1000x\\54.3 + 11.31x = 208.8x\\197.49x = 54.3\\x = 0.274951.

6 0
3 years ago
)Which statement best describes the area of the triangle shown below?
nasty-shy [4]

9514 1404 393

Answer:

  (b)  It is one-half the area of a square of side length 4 units.

Step-by-step explanation:

The triangle described can be formed by drawing the diagonal through a square 4 units on a side. Such a diagonal cuts the square cleanly in half, so the area of the triangle is half the area of the square.

3 0
3 years ago
Other questions:
  • What is the measure of each interior angle in a regular 15-gon?
    7·2 answers
  • 4.10 x 10^-2/ (-2.05 x 10^4)=
    15·1 answer
  • Which expression is represented by the diagram?<br> o -6-(-1)<br> o -6-1<br> o -5-(-1)<br> o -5-1
    6·2 answers
  • Can anyone help me in these two problems please I need help !!<br> It’s very important
    9·1 answer
  • It is 90 ft between the bases of baseball diamond. A catcher throws a baseball to the shortstop who is half-way between second a
    8·1 answer
  • Mathematics A private post -secondary corporation has 1 year low stock price of $18.69 and high price of $40.47.Assume that you
    15·1 answer
  • What is the slope-intercept equation of the line below?
    5·2 answers
  • Aaron can paint a door in 3 hours, and Anna can do the same job in 2 hours. Working together, how many hours will it take them t
    15·1 answer
  • Answer urgent please!!
    5·1 answer
  • The times of all 15 year olds who run a certain race are approximately normally distributed with a given mean mu = 18 sec and st
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!