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
kykrilka [37]
3 years ago
13

NEEDING HELP ASAP PLEASE :( click on photo

Mathematics
1 answer:
LiRa [457]3 years ago
6 0

9514 1404 393

Answer:

  (1, 1)

Step-by-step explanation:

Did you watch the video?

The y-coefficients have opposite signs and one is a multiple of the other. It is convenient to divide the second equation by 2 and add that to the first.

  (5x -2y) +1/2(4x +4y) = (3) +1/2(8)

  7x = 7 . . . . simplify

  x = 1 . . . . .  divide by 7

__

  4(1) +4y = 8 . . . . substitute for x in the second equation

  4y = 4 . . . . . . . .  subtract 4

  y = 1 . . . . . . . . . . divide by 4

The solution is (x, y) = (1, 1).

You might be interested in
5,000 kilograms minus 825 kilograms
Anna [14]
Wow. 4175 kilograms.
8 0
3 years ago
What are the coordinates of a vertex of the hyperbola?
Nadusha1986 [10]

Answer: A on Edge :)

8 0
4 years ago
Attachment below <br> algebra helppppp
yKpoI14uk [10]

Answer: second option.

Step-by-step explanation:

In order to solve this exercise, it is necessary to remember the following properties of logarithms:

1)\ ln(p)^m=m*ln(p)\\\\2)\ ln(e)=1

In this case you have the following inequality:

e^x>14

So you need to solve for the variable "x".

The steps to do it are below:

1. You need to apply ln to both sides of the inequality:

ln(e)^x>ln(14)

2. Now you must apply the properties shown before:

(x)ln(e)>ln(14)\\\\(x)(1)>2.63906\\\\x>2.63906

3. Then, rounding to the nearest ten-thousandth, you get:

x>2.6391

3 0
3 years ago
7/9 + 5/12 with lcm pls help<br> and give explanation pls
Viefleur [7K]

Answer:

1. 43/36

2. 1/2

Step-by-step explanation:

1. 7/9 + 5/12

= LCM of 9 and 12 is 36

= 28/36 + 15/12

= (28 + 15) / 36

= 43/36

2. 21/24 - 3/8

= LCM of 24 and 8 is 24

= 21/24 - 9/24

= (21 - 9) / 24

= 12/24

= 1/2

3 0
3 years ago
Read 2 more answers
Which statement is true about the domain of y = 3(2^-x)? Explain.
SVEN [57.7K]
We want to determine the domain of {y=3 \cdot 2^{-x}=3 \cdot ({2^{-1}})^x=3 \cdot ({ \frac{1}{2}})^x

any function of the form y=f(x)=a \cdot b^x is called an "exponential function",
the only condition is that b is positive and different from 1, and a is a nonzero real number.

The domain of such functions is all real numbers.

That is for any x, the expression <span>3(2^-x) "makes sense".



Answer: </span><span>The domain is all real numbers</span>
8 0
3 years ago
Other questions:
  • If a four-sided figure has four congruent sides, then it has four right angles. Prove this wrong
    11·1 answer
  • Solve the inequality.
    6·1 answer
  • the running back for the Bulldogs football team carried the ball 9 times for a total loss of 15 3/4 yards. Find the average chan
    10·2 answers
  • Is the relationship proportional yes/No
    10·2 answers
  • Find the x- and y- intercepts of 4x +5y = 20. Indicate which answer is the x-intercept and which answer is the y-intercept.
    7·1 answer
  • How do you factorise xy zy?
    8·1 answer
  • Karen purchased a prepaid phone card for $15. Long distance calls cost 11 cents a minute using this card. Karen used her card on
    11·1 answer
  • Find a solution if x=2​
    8·2 answers
  • Please help. Questions in the picture.
    12·1 answer
  • What is another way to<br> write 48 tens?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!