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kap26 [50]
3 years ago
6

Solve: 2x+4y=20 and 2x-y=4

Mathematics
2 answers:
Masteriza [31]3 years ago
5 0

Answer:

X=3.6

Y=3.2

Step-by-step explanation:

  1. 2x-y=4 which means 2x=<u>4+y</u>
  2. 2x+4y = 20 which means <u>4+y</u>+4y=20 ==> 4+5y=20
  3. 5y = 20-4 = 16
  4. y= 16/5 = 3.2
  5. 2x=<u>4+y</u>=4+3.2=7.2
  6. x = 7.2/2 = 3.6

fgiga [73]3 years ago
4 0
Answer:
(x, y) = (18/5, 16/5)
OR
(x, y) = (3.6, 3.2)
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What is the measure of angle 1?
ioda

Answer:

see explanation

Step-by-step explanation:

∠1 and 170° form a straight angle and are supplementary, thus

∠1 = 180° - 170° = 10°

∠1 and ∠3 are vertical angles and congruent , thus

∠3 = 10°

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∠2 = 180° - 15° - 10° = 155°

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6 0
3 years ago
7/5 miles in 2/3 hour, what is the unit rate?
Murljashka [212]

Answer:

= 3.5 miles per hour

Showing Work

This is a fraction equal to

7 miles ÷ 2 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 2

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3 0
2 years ago
a printer that sells for $190 is on sale for 20% off what is the sale price of the printer to work please​
alexandr402 [8]

Hey!

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

Solution:

20% = 0.2 (percentage as decimal)

190 x 0.2 = 38 (discount)

190 - 38 = 152 (sale price)

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

Answer:

The sale price of the printer is $152.

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

Hope This Helped! Good Luck!

6 0
3 years ago
Please help me solve and you'll get a brainlist
jasenka [17]
Y=4x+1
Let y=0
0=4x+1
4x=-1
x=-1/4

Let x=0
Y=4*0+1
Y=0+1
Y=1

Therefore, the ordered pair is (-1/4, 1)
4 0
3 years ago
Please help MEE!!! this is due tonight :(
MAVERICK [17]

Answer:

5.5g + 1

Step-by-step explanation:

i dont have time to explain

5 0
3 years ago
Read 2 more answers
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