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
kompoz [17]
2 years ago
13

Solve using system of equations by using elimination method for -5x+4y=2 ; 9x-4y=6

Mathematics
1 answer:
jek_recluse [69]2 years ago
6 0

Answer:

y = 3

x = 2

Step-by-step explanation:

-5x + 4y = 2

9x - 4y = 6

Sum both eq.

-5x + 9x = 4x

+4y - 4y = 0

2 + 6 = 8

then:

4x + 0 = 8

4x = 8

x = 8/4

x = 2

from the first eq.

-5x + 4y = 2

-5*2 + 4y = 2

-10 + 4y = 2

4y = 2 + 10

4y = 12

y = 12/4

y = 3

Check:

from the second eq.

9x - 4y = 6

9*2 - 4*3 = 6

18 - 12 = 6

You might be interested in
What’s the answer of this problem
Elden [556K]

Answer:

no b 11 sq.units is the answer

3 0
2 years ago
A rhombus has sides 11cm long the shorter diagonal of the rhombus is 8cm long find the size of the smaller angles of the rhombus
ZanzabumX [31]

Answer:

42.64°

Step-by-step explanation:

Note: A rhombus has all its sides equal, its opposite angle are equal, its  has bigger and smaller diagonal, diagonal bisect the angles and diagonal bisect each other.

From the diagram attached,

sinθ = opposite/adjacent

sinθ  = 4/11

θ = sin⁻¹(4/11)

θ = 21.32

Therefore, from the diagram,

The smaller angle of the rhombus = 2θ

The smaller angle of the rhombus = (2×21.32)

The smaller angle of the rhombus = 42.64°

8 0
3 years ago
Thomas earns $8.75 per hour grooming dogs. He wants to go to the movies with a $50 this weekend. Which equation can he use to fi
sveta [45]

Answer:

8.75h = 50

Step-by-step explanation:

h is the number of hours Thomas needs to groom the dogs.

The rate is $8.75 per hour.

His goal is $50.

$8.75 × h = $50

$8.75h = $50

6 0
2 years ago
Read 2 more answers
Help! from usa test prep.
kipiarov [429]

Answer:

5 units

Step-by-step explanation:

If you look at  AC that has 4 units and DE is close to 4 units but a little bigger by a unit

3 0
3 years ago
In a certain month, Mason spent 1/6 of his salary in the first three days and $800 in the following ten days and after that he w
Nesterboy [21]
<h3>Answer:   $2400</h3>

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

Explanation:

x = Mason's salary in dollars for that month

x/6 = one-sixth of his salary

x/6+800 = total amount spent (the x/6 dollars and $800 combined)

In total, he spent half his salary. This means he spent x/2 dollars for the month overall.

Set the two items equal to one another. Solve for x.

x/6 + 800 = x/2

6(x/6 + 800) = 6*(x/2) ... see note at the bottom of the page

x+4800 = 3x

4800 = 3x-x

4800 = 2x

2x = 4800

x = 4800/2

x = 2400

His monthly salary is $2400

1/6 of this is (1/6)*2400 = 2400/6 = 400 dollars. Add on the $800 he also spent to get a total of 400+800 = 1200 dollars spent, which is exactly one half of the $2400. The answer is confirmed.

-------

Note: I multiplied both sides by 6 to clear out the fractions. The value 6 is the LCD in this case.

7 0
2 years ago
Other questions:
  • Please help quick im offering 10pts and brainliest answer
    9·1 answer
  • If William made 620 babysitting. And next year he made 340%more how much money will he have
    6·1 answer
  • I need help with this one
    15·2 answers
  • 4 x ½ what is the answer​
    15·1 answer
  • Ma agência de viagens de Ubá (MG) está organizando um pacote turístico com destino à cidade de São Paulo (SP) e fretou um avião
    6·1 answer
  • A train travels at a constant speed of 24
    7·2 answers
  • Taking SOL's need help!!!!
    9·2 answers
  • Melissa got 18 out of 20 on a math quiz. Tom got 85% on the quiz. Whose mark was greater?
    14·2 answers
  • Write the equation of a line in slope intercept form.<br> (-3,-9 ) and (2,6)
    15·1 answer
  • How many digits are there in the​ Hindu-Arabic form of ​25,840 x10^20?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!