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
Tom [10]
2 years ago
9

Use substitution to solve each system of equations. y = 5x -2 3 x- 5y =4

Mathematics
2 answers:
Nezavi [6.7K]2 years ago
7 0
  • x = 3/11
  • y = -7/11

Step-by-step explanation:

y = 5x - 2…Equation 1

3x - 5y = 4…Equation 2

Subtitute value of y to Equation 2 :

3x - 5(5x - 2) = 4

3x - 25x + 10 = 4

-22x + 10 = 4

10 - 4 = 22x

6 = 22x

6/22 = x

<u>3/11 = </u><u>x</u>

Subtitute value of x to one of Equation :

for example Equation 2…

3x - 5y = 4

3(3/11) - 5y = 4

9/11 - 5y = 4

9/11 - 4 = 5y

(9 - 44)/11 = 5y

(-35)/11 = 5y

(-35)/11 × 1/5 = y

<u>-7/11 = y</u>

Mrrafil [7]2 years ago
3 0
3x - 5(5x - 2) = 4

3x - 25x + 10 = 4
-22x = 4 - 10
-22x = -6 ➗ -22
X = 3/11
You might be interested in
What is the explicit rule for the sequence?<br><br><br> 10.5, 9, 7.5, 6, 4.5, 3, ...
BartSMP [9]
You can see the answer and solution from the picture

4 0
3 years ago
Read 2 more answers
What does x equal in 3x + 5 = -7
Stolb23 [73]

Answer:-4

Step-by-step explanation:

Subtract 5 from each side, which leaves you with 3x=-12. Then divide each side by 3. Then that leaves you with x=-4

6 0
3 years ago
What is the prime factorization of 28? ​ 74 ​ ​ 47 ​ 4⋅7 22⋅7 <br> PLEASEEE AWNSERRRRRR
dem82 [27]
Well the problem came out kind of weird but the prime factors of 28 are 2•2•7

Hope this helps!
3 0
3 years ago
You attend a wedding and are second in line to get a slice of wedding cake. there are 3 slices of vanilla cake, 12 slices of cho
Dima020 [189]

Answer:

1/14

Step-by-step explanation:

Let A represent the event First person getting red velvet cake
Let B represent the event Second person getting red velvet cake

P(A) = Total number of Red Velvet Cakes ÷ Total Number of Cakes =

6/21 = 2/7

If the first person gets a red velvet cake, then there are 5 red velvet cakes and 20 total cakes

Therefore P(B|A) = Number of red velvet cakes left ÷ total number of cakes left = 5/20 = 1/4

P(A and B) == probability of both getting red velvet cake P(A∩B) = P(A).P(B|A) = 2/7 × 1/4 = 2/28 = 1/14

7 0
1 year ago
Karla has spent $42 on food. She bought milk, cheese, and meat. The milk cost half as much as the cheese and the meat cost four
Alina [70]

M = milk

C= cheese

X=meat

milk = 0.5c

meat = 4c

cheese = 1c

<span>4 +0.5 = 1c  = 5.5c</span>

 

C= 42/5.5 = 7.64

X = 7.64 x 4 = 30.56

M =7.64 * 0.5 = 4.67

 

30.56 + 3.82 + 7.64 = approximately $42



4 0
3 years ago
Other questions:
  • If f(x) = -x + 8 and g(x) = x^4, what is (gºf)(2)?
    11·2 answers
  • Is 4^12 equivalent to 4^7 x 4^-5
    9·1 answer
  • A rectangular gift box measures 8 inches by 10 inches by 3 inches. what is the surface area?
    5·2 answers
  • An advertisement claims that Fasto Stomach Calm will provide relief from indigestion in less than 10 minutes. For a test of the
    12·1 answer
  • The perimeter of a triangle is 39 feet. One side of the triangle is one foot longer than the second side. The third side is two
    14·1 answer
  • Hey! please help i’ll give brainliest!
    15·1 answer
  • Someone pls help me with this I'm begging you to pls not write whatever and steal points I rlly need help I will mark you as bra
    10·1 answer
  • Consider the equation x^2=6x+1 rewrite the equation by completing the square
    6·2 answers
  • 3x - y = 9<br> Slope-intercept??
    9·1 answer
  • The cost of a fan is Rs 1,600. If Mrs. Khadka purchased it with 13% VAT, how muc did she pay for it? ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!