All categories

3 years ago

Solve by elimination 5x+6y =-2 15x + 4y= 22

Mathematics

2 answers:

Ipatiy [6.2K]3 years ago

8 0

Answer:

(2,-2)

Step-by-step explanation:

sineoko [7]3 years ago

7 0

Answer:

(2, -2)

Step-by-step explanation:

Multiply the first equation by -3,and multiply the second equation by 1.

−3(5x+6y=−2)

1(15x+4y=22)

Becomes:

−15x−18y=6

15x+4y=22

Add these equations to eliminate x:

−14y=28

Then solve−14y=28for y:

−14y=28

−14y

−14

(Divide both sides by -14)

y=−2

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

5x+6y=−2

Substitute−2foryin5x+6y=−2:

5x+(6)(−2)=−2

5x−12=−2(Simplify both sides of the equation)

5x−12+12=−2+12(Add 12 to both sides)

5x=10

(Divide both sides by 5)

x=2

Answer:

x=2 and y=−2

You might be interested in

110 is between blank and blank so 110 divided by 8 is between 13 and 14

mixas84 [53]

The 2 numbers required are 13*8 and 14 * 8
that is 104 and 117

5 0

4 years ago

Cameron rent is 2,308 per month and wants to pay rent in $100 dollar bills and $1 dollar bills. How many $100 dollar bills will

Alinara [238K]

(2308*10)/100=230.3 so he would have to pay 230 hundos (and 30 singles)

6 0

3 years ago

Read 2 more answers

I NEED HELP PLS I WILL MARK BRAINLIEST

ANEK [815]

Answer:

$\approx 11.2\:\mathrm{in}$

Step-by-step explanation:

The swing of the tip of pendulum is creating an arc. The question is actually asking for the length of this arc. The length of an arc is given by $2r\pi\cdot \frac{\theta}{360}$ , where $r$ is the radius of the circle and $\theta$ is the angle of the arc.

In this problem, we're given:

$\theta = 40^{\circ},\\r=16$

Substituting given values, we get:

$2\cdot 16\cdot \pi \cdot \frac{40}{360}=32\pi\cdot \frac{1}{9}\approx \boxed{11.2\:\mathrm{in}}$

8 0

3 years ago

The circumference of one of the smaller circles is 12pie cm. Find the circumference of the larger circle.. . A. 12pie cm. B. 24p

Temka [501]

There exists a similar question that would lead to the relationship of the given circumference to the unknown value. The radius of the larger circle is 12 cm. The formula for determining the circumference is,
C = 2πr
Substituting the known value,
C = 2π x 12 cm = 24π cm
Thus, the answer is letter B.

4 0

3 years ago

David has $116 to spend on 2 pair of pants. He will use his remaining money to buy as many pairs of new socks as he can afford a

timofeeve [1]

Answer:

11 socks

Step-by-step explanation:

116 - 2 pants = 116 - 2 (35) = 116 - 70 = 46

46 / socks = 46/4 = 11.5

3 0

3 years ago