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
riadik2000 [5.3K]
2 years ago
6

Solve each system by using substitution. 3x - y = 4 x + 5y = -4

Mathematics
1 answer:
babunello [35]2 years ago
5 0

Answer:

from \: last \: equation : \\ x =  - 4 - 5y -  -  - (a) \\ substitute \: in \: first \: equation \\ 3( - 4 - 5y) - y = 4 \\  - 12 - 15y - y = 4 \\  - 16y = 16 \\ y =  - 1 \\  \\ therefore \: from \: (a) \\ x =  - 4 - 5( - 1) \\ x = 1

You might be interested in
-3/7*(-8)= plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Sindrei [870]

Answer:

3.42857143

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Can someone please answer this for me.
Levart [38]

Answer:

See picture

Step-by-step explanation:

The rule is ...

x^{m/n}=\sqrt[n]{x^m}

The index of the surd becomes the denominator of the exponents inside.

4 0
3 years ago
Read 2 more answers
3 hundred thousand 3 thousand 8 hundred 4 tens
alekssr [168]

Answer:

3384

Step-by-step explanation:

3 0
2 years ago
Which one of the following is considered a quantitative variable?
tatyana61 [14]
Okay so here's the definition of quantitative just in case you ever need it :) Categorical. Categorical variables take on values that are names or labels. The color of a ball (e.g., red, green, blue) or the breed of a dog (e.g., collie, shepherd, terrier) would be examples of categorical variables. And the answer would be A the color of your car because it talks about in the definition of the color of a ball so A would be the correct answer! Please mark brainliest :)
7 0
2 years ago
If the 1st and 10th terms of geometric sequence are 4 and 100, find the nth term of the sequence
Masja [62]

a = 4 first term, r = ?, T10 = 100.

Tn = ar^n - 1 formula for g.p

T10 = 4r^ 10 - 1

100 = 4r^9

Divide both side by 4

100/4 = 4/4r^9

25 = r^9 take the 9th root of both side

9√25 = 9√r^9

r = 9√25

To find the nth term

Since Tn = ar^n - 1

7 0
3 years ago
Other questions:
  • Please help!!!! I dont know how to do this and also please explain!
    11·1 answer
  • Bill ate 1 fourth of trail mix on his first break during a hiking trip.On his second break,he ate 1 sixth pound .How many pounds
    6·1 answer
  • Diffusion and Solubility of Gases (B. Flaconn'eche, et al., Oil and Gas Science and Technology, 2001:262-278) reported on a stud
    10·1 answer
  • The average gas mileage m in miles per gallon for a compact car is modeled by
    7·1 answer
  • One half a number increased by three is greater than zero or less than or equal to negative three
    7·2 answers
  • A random sample of 45 professional football players indicated the mean height to be 6.18 feet with a sample standard deviation o
    9·1 answer
  • What is 32751 divided by 9
    10·1 answer
  • If 3y = 15 and 15 = 5x, then 3y = 5x. What algebraic equality property justifies the above statement?
    14·1 answer
  • Question 4 of 10
    12·1 answer
  • 5ab^2 - 12a^2b + 3ab + ab^2 + 4a^2b
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!