MATHEMATICS HIGH SCHOOL

Multiply and simplify.
3x-3/x^2-1* (x+2)(x+1)/x-1

Answers

Answer 1
Answer: Hello,

If x≠1 and x≠-1 then

(3x-3)/(x^2-1)*((x+2)(x+1))/(x-1)=(3(x-1))/(x-1)*((x+2)(x+1))/((x-1)(x+1))\n=(3(x+2))/(x+1)

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What is the area of the triangle A. 96 sq meters
B. 48 sq meters
C. 24 sq meters
D. 7 sq meters

Answers

 c)24 sq meters.....................

What is the measure of

Answers

The measure of is idk you have to tell me the measurement first :)
need more info but i’m happy to answer in the comments:)

Y=kx+b
A (1,-2) B (-2,-8)
Linear functions!

Answers

k=slope
b=y intercept

find slope
slope=(y2-y1)/(x2-x1)

(x,y)
(1,-2)
(-2,-8)

x1=1
y1=-2
x2=-2
y2=-8

slope=(-8-(-2))/(-2-1)=(-6)/(-3)=2/1=2



k=2
subsitute
y=2x+b
subsitute one point
(1,-2)
x=1,y=-2

-2=2(1)+b
-2=2+b
subtract 2
-4=b


y=2x-4

Need help really bad please

Answers

Problem 1

Answer: Choice B) angle1 = 26, angle2 = 64

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Explanation:

Complementary angles add to 90

(angle1)+(angle2) = 90

(5x+6)+(68-x) = 90

4x+74 = 90

4x = 90-74

4x = 16

x = 16/4

x = 4

So,

angle1 = 5x+6 = 5(4)+6 = 26

angle2 = 68-x = 68-4 = 64

Note how

angle1+angle2 = 26+64 = 90

to help check our answer

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

Problem 2

Answer: Choice D) BC, AC, AB

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Explanation:

The shortest side of a triangle is always opposite the smallest angle.

The longest side of a triangle is always opposite the largest angle.

Based on those two facts, we can say the shortest side is BC (since angle A = 53 is the smallest angle) and the longest side is AB (since angle C = 70 is the largest)

The order from smallest to largest is

BC, AC, AB

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

Problem 3

Answer: Choice D) B < C < A

----------

Explanation:

Use the reverse of the idea from problem 2. We know that AC is the smallest side which must mean that angle B is the smallest angle. Since BC is the largest side, angle A must be the largest angle.

The order of the angles is B < C < A

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

Problem 4

Answer: Choice A) angle 5 = 50, angle 8 = 130

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Explanation:

The same side exterior angles must be supplementary to have parallel lines.

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

Problem 5

Answer: Choice A) angle G is the smallest

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Explanation:

Use the same idea as problem 2. The smallest angle is opposite the smallest side. The smallest side is 48, so angle G being opposite of that side, is the smallest angle.

Angle O would be the largest as it is opposite the largest side DG = 70

Which is greater 16.45 or 16.454

Answers

16.454 is greater. If you write the full numbers in the thousandths column, 16.45 is 16.450. It can be clearly seen that 16.454 is greater by 4 thousandths.

URGENT: The formula for the circumference of a circle is C=2 pi r. Use 3.14 for pi. Solve the formula for r. What is the radius of a circle with a circumference of 87 cm? Round the the nearest tenth. Show your work.
A- C over 2 pi; 13.9cm
B- 2 pi over C; 27.7cm
C- 2 pi C; 546.4cm
D- C - 2 pi; 80.7cm

The formula for the area of a triangle is A = bh over 2. Solve the formula for h. What is the height of a triangle that has an area of 25 mi^2 and a base with a length of 10 mi? Show your work. Round to the nearest tenth.

A- h=2Ab; 1.25 mi
B- h=2Ab; 2.5 mi
C- h=2A over b; 0.2 mi
D- h=2A over b; 5 mi

Answers

Answer:

Question 1:

The answer is going to be A

Question 2:

The answer is A


I hope this helps
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