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
ziro4ka [17]
3 years ago
14

3х – 8y = 34 7х + 4у = -34 Solve by elimination Y and x Please show steps ):

Mathematics
1 answer:
garri49 [273]3 years ago
4 0

Answer:

The answer would be (-2, -5)

Step-by-step explanation:

3x - 8y= 34

2(7x + 4y = -34)

3x - 8y=34

14x + 8y= -68

----------------------

     17x= -34    divided by 17

       x = -2

3(-2) -8y= 34

-6 -8y =34 add 6

   -8y= 40  divide by -8

      y = -5

if you want to check the answer replacing -2 for x and -5 for y

7(-2) + 4(-5)= -34

-14 + (-20) = -34

-34 = -34

I hope this help sorry I'm not good explaining

You might be interested in
Suppose one hundred eleven people who shopped in a special t-shirt store were asked the number of t-shirts they own costing more
salantis [7]

Answer:

Option C 41%

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The number of people who own at most three t-shirts costing more than $19 each is equal to the number of people who own one t-shirt costing more than $19 each, plus the number of people who own two t-shirt costing more than $19 each, plus the number of people who own three t-shirt costing more than $19 each

Observing the graph

The number of people who own one t-shirt costing more than $19 each is 5

The number of people who own two t-shirt costing more than $19 each is 17

The number of people who own tree t-shirt costing more than $19 each is 23

The number of people who own at most three t-shirts costing more than $19 each is

(5+17+23)=45\ people

To find out the percentage divided the number of people who own at most three t-shirts costing more than $19 by one hundred eleven people (total people that shopped in a store) and then multiply by 100

(45/111)100= 40.54\%

Round to the nearest whole number

40.54\%=41\%

3 0
3 years ago
(-5)^-4 Write it as a positive exponent
AVprozaik [17]
1/(-5)^4 that’s a fraction btw
3 0
3 years ago
Read 2 more answers
ZABD and ZDBC are supplementary angles.
Alecsey [184]

Answer:

not letting u cheat but i will show u how its done

Step-by-step explanation:

180-134=x

5 0
3 years ago
Read 2 more answers
consider a population of voters. suppose that that there are n=1000 voters in the population, 30% of whom favor jones. identify
Drupady [299]

Answer:

P(B)=0.30

Step-by-step explanation:

Out of 1000 Voters, 30% favor Jones.

Event S=Favors Jones on First Trial

Event B=S occurs on Second Trial

P(S)=0.30

P(S')=1-0.30=0.70

Event B could occur in two ways

  1. The first two trials are a success
  2. The first trial is a failure and the second trial is a success.

Therefore,

P(B)=P(SS)+P(S'S)

=(0.3X0.3)+(0.7X0.3)

=0.09+0.21

=0.3

Therefore, the probability of event B(that event S occurs on the second trial), P(B)=0.30.

7 0
3 years ago
Hey, I need help on this assignment
True [87]

Step-by-step explanation:

YO ≅ NZ

Given

YO + OZ ≅ NZ + OZ

Additive property

YZ ≅ NO

Segment addition postulate

∠M ≅ ∠X, ∠N ≅ ∠Y

Given

ΔMNO ≅ ΔXYZ

AAS congruence

3 0
3 years ago
Other questions:
  • Integrated circuits consist of electric channels that are etched onto silicon wafers. A certain proportion of circuits are defec
    5·1 answer
  • What is the cost per song
    9·2 answers
  • PLEASE HELP!
    5·2 answers
  • What is 3.75 multiplied by .63
    5·2 answers
  • HELPPP!!!!! AGAIN !!! MAARKING BRAINLIST! mAtH
    7·2 answers
  • -6 - (-9)<br> thats it i just need help with that
    5·1 answer
  • Simplify (4x+5y)(2x-3y) +3xy please
    13·1 answer
  • Ab" that goes through points (0,9)<br> Write an exponential function in the form y<br> and (5,2187)
    12·1 answer
  • Next please stay stay and help thanks
    11·2 answers
  • 13. The sports field shown in the image below has a 90m by 70m football field with a semi-circular area at each end. A tract run
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!