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
Assoli18 [71]
3 years ago
8

5x+2y=43 ; -6x+3y=-30

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
5 0

Answer:

-3(5x+2y=43)

2(-6x +3=-30)

-15x-6y=-129

-12x+6y=-60

-27x=-189

x=7

5(7)+2y=43

35+2y=43

2y=8

y=4

(7,4)

You might be interested in
10. please for 25 points​
Xelga [282]

Answer:

The answer choice is B

Step-by-step explanation:

In order for a function to work, the input value must go with only one output value, so the only one that work is b

7 0
3 years ago
Read 2 more answers
You must calculate the number of sheets of plywood needed for subflooring. Each sheet of plywood measures 4'by 8. The measuremen
snow_lady [41]

Answer:

25 sheets of plywood will be needed

Step-by-step explanation:

Each sheet of plywood measures 4ft*8ft=32ft^{2}.

We have to cover the surface of the house, minus the surface of the hole of the stairs.

Surface _{to cover} = Surface _{house} -Surface _{hole}= (28ft*30ft)-(12ft*4ft)= 840ft^{2}-48ft^{2}=792ft^{2}

To know how many sheets will be needed, we divide the surface to be covered by the surface of each sheet

Sheets_{needed} =\frac{Surface _{house}}{Surface _{sheet}} =\frac{792ft^{2}}{32\frac{ft^{2}}{sheet} } = 24,75 sheets

As we can't buy 0,75 of a sheet, we round it up, i.e. we will need 25 sheets of plywood for subflooring.

8 0
3 years ago
Create equations to solve for missing angles may be hard for me to solve. Need help on this!!​
Sonja [21]

Answer: A.2x+30=90

wwww

5 0
3 years ago
Assume y varies directly with x. when y=2 2/3 when x=1/4, what is y when x=1 1/8? NEED HELP QUICK!!
snow_tiger [21]

3y=8x

Explanation:

If y varies directly with x then

y=c⋅x for some constant of variation c

If (x,y)=(14,23) is a solution to this equation, then

23=c⋅14

→c=23⋅41=83

So

y=83x

or (clearing the fraction)

3y=8x

7 0
3 years ago
What is the slope of the line that passes through the points (3, -2) and (9, -2)?
ICE Princess25 [194]

m=(-2+2)/(9-6)=0/3=0

m=0

7 0
3 years ago
Other questions:
  • Use greatest common factor and the distributive property to write equivalent expressions in factored form. 2 +8
    8·1 answer
  • So i know how to do this but.... im confusing my self >n< please help me
    5·1 answer
  • The distance required to stop a car varies
    11·1 answer
  • (z-2) (z+6) Multiplying polynomials
    5·2 answers
  • By showing your work how do you multiply 1728 by 405
    15·1 answer
  • Lee has a jar of 100 pennies. She adds groups of 10 pennies to the jar. She adds 5 groups. What numbers does she say?
    12·1 answer
  • Samantha is making soup. to make the broth, she combines 2/5 cup of vegetable stock and 2/3 cup of chicken soup stock. Boiling
    8·2 answers
  • Please teach me these question step by step. Thank you
    6·1 answer
  • Mathematics geometry <br> Y intercept ?
    11·1 answer
  • Can someone help me with this pls​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!