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
Hitman42 [59]
2 years ago
11

Solving by Elimination

Mathematics
1 answer:
Bond [772]2 years ago
4 0

Answer:

unsolvable

Step-by-step explanation:

by elemination 14x+7y=-7 (1)

-14x-7y=7 (2)

x and y will be 0 then

You might be interested in
NEED SOME HELP FAST!!!!
Bad White [126]
The volume is 12.5 hope it helps

4 0
3 years ago
Please solve the math problem for me... I will mark you brainliest
natali 33 [55]

Answer:

x=34

Step-by-step explanation:

*it's kind of hard to read the number in parenthesis though but i think it's 5

both angles have to add up to 180º because they are co-exterior angles on parallel lines.

2(x+5)+102=180\\2(x+5)=78\\2x+10=78\\2x=68\\x=34

6 0
2 years ago
Apply the laws of exponents, calculate the result and express the result in scientific notation, and as a decimal: (8.1*10^-4)^2
AfilCa [17]
<h3>Answer:</h3>
  • the result in scientific notation is 6.561×10⁻⁷
  • the result as a decimal is 0.000 000 656 1
<h3>Explanation:</h3>

The rules of exponents say the exponent outside parentheses applies to each factor inside parentheses.

... (8.1*10^-4)^2 = 8.1^2 × (10^-4)^2

... = 65.61 × 10^-8

... = 6.561 × 10^-7 . . . . adjust to scientific notation with one digit left of the decimal point

The exponent of -7 means the decimal point in the decimal number is 7 places to the left of where it is in scientific notation. That is ...

... 6.561 × 10^-7 = 0.0000006561

4 0
3 years ago
1- find the first term= ?, 90, 540, 3240
Luda [366]

Answer:

1. 15

2. 8

Step-by-step explanation:

The two sequence are geometric progression GP, because they follow a constant multiple (common ratio)

The nth term of a GP is;

Tn = ar^(n-1)

Where;

a = first term

r = common ratio

For the first sequence;

The common ratio r is

r = T3/T2 = 540/90 = 6

r = 6

T2 = ar^(2-1) = ar

T2 = 90 = ar

Substituting the values of r;

90 = a × 6

a = 90/6

a = 15

First term = 15

2. The sam method applies here.

Common ratio r = T3/T2 = 128/32 = 4

r = 4

T2 = ar^(2-1) = ar

T2 = 32 = ar

Substituting the values of r;

32 = a × 4

a = 32/4

a = 8

First term = 8

4 0
3 years ago
Tyler used 6 gallons of paint to paint 4/7 of a fence. How many gallons will it take to paint the whole fences
vredina [299]

Answer:

Step-by-step explanation:

(6 gal)/(4/7 fence) = (21/2 gal)/fence = (10.5 gal)/fence

5 0
2 years ago
Other questions:
  • Heron wants to buy a video game. The price is regularly priced at 55 dollars. The store has a discount of 20% off and a sales ta
    12·1 answer
  • R=9+3s<br>what is r if s=6
    12·2 answers
  • Find the scale factor ​
    9·1 answer
  • If m is the midpoint of ab find the coordinates of a if b(4,6) and m(1,2) A is pls help I need to know pls
    14·1 answer
  • Justin has 20 pencils, 25 erasers, and 40 paper clips. He organizes them into groups with the same numer of items in each group.
    14·2 answers
  • PLZ HELP ME I BEGG YOU
    5·1 answer
  • Please help!! I have trouble in math and will give points and thanks for this!!
    6·2 answers
  • PLEASE I NEED HELP INSTANTLY AND I WILL GIVE A BRAINLEISTA AND A THANKS
    10·2 answers
  • Evaluate if k=39 and j=-10 what is the ansewer to K/3+J
    5·1 answer
  • A worker at a farm supply company in Franklin County is mixing up a 420-kilogram batch of its special grain blend for horses, wh
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!