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
xenn [34]
3 years ago
5

Solve each system by elemination, 4x+8y=20 and -4x+2y=-30

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0
The sum of the left side of these two equations is equal to the same of the right side is these two equations
4x+8y + (-4x+2y) = 20 + 30
10y =50 ( x is eliminated)
y=5
Take this into the second equation
-4x +2y = 30
-4x + 2*5 = 30
x=-5

So x=-5
y=5
You might be interested in
Need help quick its due at 9
DanielleElmas [232]
Their equal because they both go the same
7 0
2 years ago
Broccoli cost 1.50 per pound at a store. How much money does 32 ounce of broccoli cost.
spayn [35]

Answer:

$3.00

Step-by-step explanation:

Step 1. Calculate the <em>pounds of broccoli</em>.

Start with what you know: you want 32 oz of broccoli.

You know that 1 lb = 16 oz.     Calculate the weight in pounds

Wt  = 32 × 1/16

Wt  = 2 lb

===============

Step 2. Calculate the <em>cost of the broccoli</em>.

$1.50 = 1 lb          Calculate the cost

Cost = 2 × 1.50/1

Cost = $3.00

7 0
3 years ago
how many different angles would be formed by a transversal intersecting three parallel lines? How many different angle measureme
RSB [31]
You would get alternating interior and exterior angles, corresponding and consecutive angles, and vertical angles. There would be only two different angle measurements, which would add to 180 degrees, the degree of one straight line.
5 0
2 years ago
Read 2 more answers
Tia used a photocopier to dilate the design for a monorail track system. The figure shows the design and its photocopy: Two irre
nlexa [21]

Answer:

28

Step-by-step explanation:

FG = BC * 2 = 14 * 2 = 28

6 0
3 years ago
Read 2 more answers
Braden bought a piece of commercial real estate for $101,234. The value of the real estate appreciated at a constant rate per ye
MrMuchimi

Answer:

f(t) = 101,234(1.03)^{t}

Step-by-step explanation:

First, use FV formula to find the rate ;r given PV=101,234 and FV=104,271.02 and time= 1 year

FV= PV (1+r)^{t}

104,271.02 = 101,234(1+r)^{1}

Divide both sides by 101,234 to get;

104,271.02 / 101,234 = 1+r

1.03 = 1+r

1.03 -1 =r

therefore r= 0.03 or 3%

Next, to get the function of FV of estate after t years; f(t) ;

Plug in the 3% rate found above into the FV formula with PV being the current value of 101,234 and it becomes;

f(t) = 101,234(1.03)^{t}

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is 4^3*4^2*8^3<br><br> PLEASE I NEED HELP ASAP!!!!!!!
    7·2 answers
  • Suppose y varies jointly as x and z. Find y when x = –13 and z = 7, if y = 205 when x = –5 and z = –8. Round your answer to the
    13·1 answer
  • A student rolled two six-sided number cubes several times. the numbers below are the sums of the numbers she rolled. Which histo
    10·2 answers
  • What is this answer.
    10·1 answer
  • Find the midpoint of the line seg<br> (-4, -2) and (3, 3)
    6·1 answer
  • Exclain why 0.32 with a line above it is greater than 0.32
    9·1 answer
  • If two lines are cut by a transversal, the corresponding angles are equal in measure.
    5·2 answers
  • 9,16,21<br> is a right triangle
    14·1 answer
  • Please Show Your Work All My Points Please Help Me!!!!! 6x^2+8x-6=2-2x-2
    9·2 answers
  • PLEASE HELP ASAP!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!