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
My name is Ann [436]
2 years ago
15

4x + 5y = 7 3x – 2y = –12 Multiply each equation by a number that produces opposite coefficents for x or y

Mathematics
1 answer:
shutvik [7]2 years ago
4 0

Answer:

Step-by-step explanation:

DO YOU MEAN :

4x + 5y = 7\\ 3x - 2y = -12\\Multiply-equation 1 -by -the-coefficient-of-x-in-equation-2\\multiply-equation-2 -by-the-co-efficient -of x -in-equation- 1\\\\3(4x + 5y = 7)\\4( 3x - 2y = -12)\\\\12x +15y=21\\12x -8y=-48

You might be interested in
Write 0.9 as a fraction
Grace [21]

Answer:

The answer is 9/10

Step-by-step explanation:

it's 9/10

5 0
2 years ago
Read 2 more answers
The area of rectangular field is (49m2-42m+9).Find the dimensions of the field
Drupady [299]

Answer:

The dimensions are (7m-3) by (7m-3)

Step-by-step explanation:

We have the area of the rectangular field to be:

49 {m}^{2}  - 42m + 9

We need to factorize this expression.

Let us rewrite to obtain:

{(7m)}^{2}  - 2(7 \times 3)m +  {3}^{2}

We can easily see that the expression is actually a perfect square trinomial.

This gives us:

(7m - 3)^{2}

Or

(7m - 3)(7m - 3)

6 0
3 years ago
The greatest comen factor of 24 and 30
Alja [10]

Answer:

6

Step-by-step explanation:

Write the prime factorizations:

24 = 2³ × 3

30 = 2 × 3 × 5

The greatest common factor is the product of the common factors at their lowest exponents.

GCF = 2 × 3

GCF = 6

7 0
3 years ago
Read 2 more answers
Pls help asap!!!!!!!!
Tcecarenko [31]
M < PQS + m < RQS = 180° because they are supplementary angles.

Therefore:
(3x + 3) + (x + 19) = 180

3x — 3 + x + 19 = 180

4x + 16 = 180

Subtract 16 from both sides

4x — 16 = 180 — 16

4x = 164

Divide both sides by 4:

4x/4 = 164/4

x = 41

Therefore, the correct answer is x = 41
6 0
2 years ago
Sarthak wants to complete his design
Varvara68 [4.7K]

Answer:

Step-by-step explanation:

3 times 60 = 180 minutes

10 * 60 = 600 minutes

600/20 = 30 * 3 = 90 hours

8 0
2 years ago
Other questions:
  • If cos 67 degrees is close to 2/5 which is closest to the length of no
    7·1 answer
  • Plz help me i need it
    15·1 answer
  • Please answer it now in two minutes
    5·1 answer
  • Y=(?,?) x=(?,?) determine the intercept of the line
    15·2 answers
  • Find the distance between the two points to the nearest tenth (if necessary) (0,-8) and (-5,4)
    6·1 answer
  • 2.39 written as a fraction
    11·1 answer
  • A division of Ditton Industries manufactures the Futura model microwave oven. The daily cost (in dollars) of producing these mic
    7·1 answer
  • When the Nelsons sold their house they paid the realtor a
    7·1 answer
  • -500<br> を<br> /<br> 2<br> 4<br> -4<br> 12<br> 101<br> A<br> 1<br> 1500
    13·1 answer
  • Complete the proof of the identity by choosing the rule that justifies each step.(1-cosx)(1+cosx)=sin^2x
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!