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3 years ago

Solve the system 3x – 2y = 1 2x + 2y = 4

Mathematics

1 answer:

natulia [17]3 years ago

3 0

Answer:

x = 1, y = 1

Step-by-step explanation:

Given the 2 equations

3x - 2y = 1 → (1)

2x + 2y = 4 → (2)

Adding (1) and (2) term by term, eliminates the term in y

5x = 5 ( divide both sides by 5 )

x = 1

Substitute x = 1 into (2) for corresponding value of y

(2 × 1) + 2y = 4

2 + 2y = 4 ( subtract 2 from both sides )

2y = 2 ( divide both sides by 2 )

y = 1

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Antoinette solves the linear equation 3(x-3)+2x+9=2x+2(x-1)

xeze [42]

Hope this worked :3

8 0

3 years ago

Multiply: (3x - 5)(-x + 4)

insens350 [35]

Answer:

-3x²+17x-20

Step-by-step explanation:

When you apply the distributive property (which you did correctly), you simply multiply each number or variable in which you have to distribute it to (which again you wrote correctly) and then you add them all together.

(3x)(-x)=-3x²

(3x)(4)=12x

(-5)(-x)=5x

(-5)(4)=-20

Add those and you will get your answer. Hope this helped :)

3 0

2 years ago

Read 2 more answers

Can someone help please

Juli2301 [7.4K]

The measure of angle RQS is 50°.

Solution:

Given data:

m(ar QTS) = 260°

Tangent-chord theorem:

If a tangent and chord intersect at a point, then the measure of each angle formed is half of the measure of its intercepted arc.

$$ m \angle PQS = \frac{1}{2}\times m(ar \ QTS)$

$$ = \frac{1}{2}\times260^\circ$

$=130^\circ$

m∠PQS = 130°

Sum of the adjacent angles in a straight line is 180°.

m∠PQS + m∠RQS = 180°

130° + m∠RQS = 180°

Subtract 130° from both sides.

130° + m∠RQS - 130° = 180° - 130°

m∠RQS = 50°

The measure of angle RQS is 50°.

4 0

3 years ago

(ii) A retailer paid Rs 40000 for an article after receiving a discount of 20% the marked price from the manufacturer. He sold t

Triss [41]

Answer:

the answer is C

Step-by-step explanation:

40,000/.80 = 50,000

50,000 x .10 = 5,000

50,000 - 5,000 = 45,000

45,000 x .06 =2700

45,000 + 2,700 = 47,700

6 0

2 years ago

Help will mark brainliest and give points

Elodia [21]

Answer:

I will gladly assist you with your problem! (see explanation)

Step-by-step explanation:

Suppose that the tower's height is t and that the necessary distance is x.

To determine the value of t, use comparable triangle ratios:

$t / 10 = (9 + 3) / 3t / 10 = 4t = 40 feet$

Use Pythagorean Theorem to find the value of x:

$x^{2} =40^{2} +(9+3)^{2} \\x^{2} =1600+144\\x^2=1744\\x=\sqrt{1744} \\x= 42 feet$ (answer is rounded)

(I hope this helps solve your problem )

5 0

10 months ago