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2 years ago

2y-3[3-4(y-5)+2(1-3y)]

Mathematics

2 answers:

soldi70 [24.7K]2 years ago

4 0

Answer:

- 75 - 32y

Step-by-step explanation:

2y-3[3-4(y-5)+2(1-3y)]

= 2y - 3(3 - 4y + 20 + 2 - 6y)

= 2y - 3(25 - 10y)

= 2y - 75 - 30y

= - 75 - 32y

Brainliest???

Sergeeva-Olga [200]2 years ago

3 0

Answer:

Step-by-step explanation:

2y-3[3-4(y-5)+2(1-3y)] = 2y - 3[ 3 - 4*y - (-4)*5 + 2*1 -2*3y]

= 2y -3[ 3- 4y+ 20+ 2- 6y]

= 2y - 3[ 3+20+2 -4y-6y] {bring the like terms together}

=2y- 3 [25 - 10y]

=2y - 3*25 - (-3)*10y

= 2y - 75 + 30y

= 32y - 75

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What is the approximate area of the triangle below? 95 degrees 35 degrees 14cm.

svp [43]

By utilizing the law of the sines and Heron's formula, we find that the approximate area of the triangle is approximately 73.1 square centimeters. (Correct choice: A)

<h3>How to calculate the area of a triangle by Heron's formula</h3>

Prior to using Heron's formula, we must find the lengths of the missing sides by law of the sines:

A = 180° - 95° - 35°

A = 50°

$b = 14\,cm \times \frac{\sin 35^{\circ}}{\sin 50^{\circ}}$

b ≈ 10.483 cm

$c = 14\,cm \times \frac{\sin 95^{\circ}}{\sin 50^{\circ}}$

c ≈ 18.206 cm

Now, we proceed to calculate the area of the triangle:

s = 0.5 · (14 cm + 10.483 cm + 18.206 cm)

s = 21.345 cm

$A = \sqrt{(21.345\, cm) \cdot (21.345\, cm - 14\,cm)\cdot (21.345\, cm - 10.483\,cm)\cdot (21.345\,cm - 18.206\,cm)}$

A ≈ 73.113 cm²

By utilizing the law of the sines and Heron's formula, we find that the approximate area of the triangle is approximately 73.1 square centimeters. (Correct choice: A)

To learn more on triangles: brainly.com/question/2773823

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4 0

2 years ago

A rhombus with four 90° angles can also be called _____.

Ostrovityanka [42]

Answer:

square is the answer...

6 0

3 years ago

How do i solve for this?

dem82 [27]

Answer:

Step-by-step explanation:

So you know the coords for the angle which is (1, 4).

Another coord might be (2, 5) or (0,3)

So we can find the slope

rise/run=1/1

so m=1

Sub in coords like (1,4) to find y-int

y=mx+b

4=1(1)+b

b=3

Thus y=x+3

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2 years ago

Answer choices: X=23 X=63 X=90

Law Incorporation [45]

Answer:

x = 63

Step-by-step explanation:

x + 2 + 25 = 90

x + 27 = 90

x = 63

I hope that helps.

3 0

2 years ago

Read 2 more answers

Saul made some extra money last year from a part-time job. He invested part of the money at 2% with four times as much invested

omeli [17]

Answer:

$4000

Step-by-step explanation:

Given that :

Total interest earned = $150

Let amount invested (p) at 2% = x

Amount invested (p) at 3.25% = 4x

Interest = principal * rate * time

At 2%:

(x * 0.02 * 1 ) + (4x * 0.0325 * 1) = 150

0.02x + 0.13x = 150

0.15x = 150

x = 150 / 0.15

x = 1000

Hence,

Amount invested at 2% = x = 1000

Amount invested at 3.25% = 4x = 4(1000) = 4000

6 0

3 years ago