Mathematics High School

Answer #3 & #4 with proof please ! I'll give you brainliest :)​

Answer #3 & #4 With Proof Please ! I'll Give You Brainliest :)

Answers

Answer 1

Answer:

see explanation

Step-by-step explanation:

The perimeter is the sum of the 3 sides , then

2x - 6 + x + 4 + 10 > 50

3x + 8 > 50 ( subtract 8 from both sides )

3x > 42 ( divide both sides by 3 )

x > 14

(4)

The area is calculated by multiplying length and breadth , then

3(4x - 2) < 138 ( divide both sides by 3 )

4x - 2 < 46 ( add 2 to both sides )

4x < 48 ( divide both sides by 4 )

x < 12

Related Questions

Select the correct answer from each drop-down menu.
CD is perpendicular to AB and passes through point 95, 12).
If the coordinates of A and B are (-10, -3) and (7,14), respectively, the x-intercept of CĐ is (blank). The point
(Blank) lies on CD.

Answers

Answer:

Hello! the answer is CD is 17,0 (-2,19)

a trader is given 15% discount on goods bought from a factory. If the original price of an item in the factory is 45000. Calculate the amount the trader paid for them​

Answers

Answer:

38,250

Step-by-step explanation:

Its a 15% discount so youre only paying 85% of the original 45,000. You then multiply 45,000 by .85 to find what youre paying because the decimal version of 85% is .85. You can find the decimal version of a percentage by dividing the percentage by 100; 85/100=.85. Once you multiply 45,000 by .85 you get 38,250.

Instructions: Find the measure of the indicated angle to the nearest
degree.
50
?
17

Answers

Answer:

x = 19

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

tan theta = opp /adj

tan ? = 17/50

Taking the inverse tan of each side

tan ^-1 (tan ?)) = tan^-1 (17/50)

? =18.77803

To the nearest degree

x = 19

Which linear inequality represents the graph below?
(-2,3)
(0-2)
A. y<-{x-2
O B. y<-x-2
O C. ysx-2
O D. ys-x-2

Answers

Answer:

B.

Step-by-step explanation:

1. We can clearly see that the "rise" is 5 and the "run" is 2, which cancels out both A. and D.

2. The line is dashed, which therefore cancels out both C. and D.

3. Just by canceling out those two can help you see that B fits what is seen in this figure because option A. has the wrong amount of "rise" over "run".

The linear inequality can be obtained from the given graph (the nature

of the line and the feasible (shaded) region).

Response:

[tex]B. \ y < -\dfrac{5}{2} \cdot x - 2[/tex]

How can the graph of the inequality be determined?

The given points in the graph are;

(-2, 3), and (0, -2)

The slope of the line is therefore;

[tex]Slope = \dfrac{-2 - 3}{0 - (-2)} = \mathbf{-\dfrac{5}{2}}[/tex]

The equation of the line is therefore;

[tex]y - 3 = \mathbf{ -\dfrac{5}{2} \cdot (x - (-2))}[/tex]

[tex]y = -\dfrac{5}{2} \cdot x - 5 + 3 = -\dfrac{5}{2} \cdot x - 2[/tex]

[tex]y = \mathbf{-\dfrac{5}{2} \cdot x - 2}[/tex]

Given that the left side (below the line of the equation of the graph) is

shaded and the line of the graph is a broken line, the correct option is

therefore;

[tex]B. \ y < -\dfrac{5}{2} \cdot x - 2[/tex]

Learn more about the graph of inequalities here:

https://brainly.com/question/19251897

Solve the following, where 0° < θ < 360°.
If cos θ=2/3 and tan θ<0
Find θ.

Answers

Answer:

The angle θ = 312°.

Step-by-step explanation:

0° < θ < 360°

If cos θ = 2/3 and tan θ < 0

As cos θ is positive and tan θ is negative so the angle is in fourth quadrant.

cos θ = 2/3

θ = 312°

The sets A and L are given below.
A = (a, b, e}
L={c, k,j}
Find the intersection of A and L.
Find the union of A and L.
Write your answer using notation (in roster form)
Help plzzz

Answers

Step-by-step explanation:

A n L =null

A U L= a,b,c,e,k,j

Factor completely, show work.

x² - 49

Answers

You want to pull out the square roots of each term since they are both perfect squares.

Factor using the difference of squares formula: a2-b2=(a+b)(a-b)

This formula allows the middle term to cancel out.

=x2 - 49

=(x + 7)(x - 7)

ANSWER: (x + 7)(x - 7)

Hope this helps! :)

Doubling x and adding 3 is the same as tripling x and adding 1

Answers

If x was tripled, then it would indeed be 3x. The answer wouldn't be x^3 because x isn't being multiplied by itself three times in a row. Whenever value is tripled, it's multiplied by three, but not the power of 3.

Answer:

2x + 3 = 3x + 1

x = 2

hope that helps ✌

Find the product using suitable property: a.46*102 b.55*1004​

Answers

Answer:

please

Step-by-step explanation:

follow me

please

please

please

please help! I will give brainliest to the right answer​

Answers

Answer:

75.36 is the answer.

Step-by-step explanation:

trust me bro.

Answer:

75.39822

Step-by-step explanation:

2πrh+2πr2=2·π·2·4+2·π·22≈75.39822

It said don't round your answer...

Can someone help me out

Answers

Answer: V=9.4 cm^3

Step-by-step explanation:

[tex]V=\pi r^2h\\V=\pi (1)^2(3)\\V=9.4cm^3[/tex]

Someone can help me with this ? I don’t understand

Answers

Answer:

-3

Step-by-step explanation:

Instructions: Given the figure, what is the angle of rotational symmetry?
Rotation:

Answers

The order of rotational symmetry is the number of times the shape maps onto itself during a rotation of 360°, for example:

a rectangle has order of rotational symmetry of 2; 180° and 360° rotations will map it onto itself.

for a regular hexagon has order of rotational symmetry of 6

for a regular square has order of rotational symmetry of 4

XxShazadixX.

Likes s and t are perpendicular if the slope of line s is 5 what is the slope of line t?

Answers

Answer:

Gradient of line t is -1/5

Step-by-step explanation:

[tex]{ \sf{m _{s} \times m _{t} = - 1}} \\ { \sf{5 \times m _{t} = - 1 }} \\ { \sf{m _{t} = - \frac{1}{5} }}[/tex]

i think the answer is: -5

Because they are perpendicular one will be (+) while the other is (-).

The formula to get the answer is: y=mx+b
Fill in the slope (m)
Fill in the y intercept (b)

Find the area of the regular polygon. Round your answer to the nearest hundredth

Answers

Answer:

Step-by-step explanation:

Use the Pythagorean theorem to find the length of the missing side that is 1/2 the side of the missing heptagon. You have to assume that the figure is a regular heptagon, something you should point out to your teacher. Math really requires well qualified diagrams.

c^2 = a^2 + b^2

c = 2.77

a = 2.5

b = 1/2 the side of the heptagon.

2.77^2 = 2.5^2 + b^2

7.6729 =6.25 + b^2

7.5629 - 6.25 = b^2

b^2 = 1.4229

b = sqrt(1.4229)

b = 1.1928

But the side is twice that long

s = 2.3857

Now draw another line from the side you just found. It will be the same length as 2.77. It's a radius of the circumcircle.

Area of the triangle so formed is

Area = 1/2 * b * h

b = 2.3857

h = 2.5

Area = 1/2 * 2.5 * 2.3857

Area = 2.982

There are 7 such triangles.

Answer: 7 * 2.982

Answer: 20.87

I need help with this one pls!

Answers

Hi there!

[tex]\large\boxed{b = \frac{a}{ac - 1}}[/tex]

We can begin by making each fraction have a common denominator:

If we make each have a common denominator of ab, we get:

[tex]\frac{b}{ab} + \frac{a}{ab} = c[/tex]

Simplify:

[tex]\frac{a + b}{ab} = c[/tex]

Multiply both sides by ab:

[tex]a + b = cab[/tex]

Move b to the opposite side:

[tex]a = cab - b[/tex]

Factor out b:

[tex]a = b(ac - 1)[/tex]

Divide by (ac - 1):

[tex]\frac{a}{ac - 1} = b[/tex]

Find the values of x and y that make these triangles congruent by the HL Theorem.

Answers

Can you please post a picture of the figure? I don’t see anything

PLEASEEE HELP What is the solution to the equation represented by the model below?
XX
Х
X
X
X
O x=-14
O x=-2
X= 2
OX= 14

Answers

Answer:

C) x=2

[tex]3x+8=4x+6[/tex]

[tex]8-6=4x-3x[/tex]

[tex]x=2[/tex]

~OAmalOHopeO

3x + 8 = 4x + 6

3x - 4x = 6 - 8

-x = -2

x = 2

Find all solution(s) of the quadratic equation x2 – 100 = 0. Question 9 options: A) x = 10, –10 B) x = –10 C) x = 10 D) x = 100, –100

Answers

Answer:

x = - 10, x = 10

Step-by-step explanation:

Given

x² - 100 = 0 ( add 100 to both sides )

x² = 100 ( take the square root of both sides )

x = ± [tex]\sqrt{100}[/tex] = ± 10

solutions are x = - 10, x = 10

Translate the sentence into an equation.
Three more than the quotient of a number and 6 is equal to 5.
Use the variable b for the unknown number.

Answers

Answer:

3 + b/6 = 5

solve it too?

b/6 = 2

b = 12

Answer:

is it like

3x+6=5

to solve this

3x+6=5

collect like terms

3x= -6+5

3x= -1

divide both side by 3

3x/3=-1/3

x= -0.3

G.C.D of 55 and 121 is are​

Answers

Answer is 11

Common factor of 55 and 121 is 11

Answer:

= 11

Find the Greates Common Deviser :

55 = 5, 11, 55.121 = 11, 121.

REfer and answer
Pls its urgent
Pls fast

Answers

The answer is 9/28. Double check my work

I need help to find the value of x. Round to the nearest tenth

Answers

Answer:

17.1

Step-by-step explanation:

tan(35)=12/x, x=17.1

Answer:

x ≈ 17.1

Step-by-step explanation:

The angle is 35 degrees, so we do tan(35)

Which equals the side divided by x.

tan(35) = 12 / x

So x ≈ 17.1

A payday loan store charges $25 for a one-month loan of $600. What annual interest rate is this equivalent to?

Answers

Answer:

50%

Step-by-step explanation:

1. determine the monthly interest rate

monthly interest rate = interest / loan amount

monthly interest = 25 / 600 = 4.17%

2, multiply the monthly interest rate by 12 to determine the annual interest rate

Annual interest = 4.17 x 12 = 0.5 = 50%

A stationary shop markdown their writing boards by 40%. The markdown is $32. What is the original selling price and selling price after markdown of the writing boards?
A.$50, $25
B.$60, $24
C.$80, $48
D.$70, $28

Answers

Answer:

The original price is 80

The new price is 48

Step-by-step explanation:

Let x be the original price

x - .4x = new price

.6x = new price

.4x = markdown

.4x= 32

.4x/.4 = 32/.4

x =80

The original price is 80

.6x = new price

.6(80) =  48

Ur answer should be C

Nigel makes the claim that x=6 is the solution to the equation 4(5x−12)−7x=5x. His work to support his claim follows. Given: 4(5x−12)−7x=5x Step 1: 20x−48−7x=5x Step 2: 20x−7x−48=5x Step 3: 13x−48=5x Step 4: 13x−13x−48=5x−13x Step 5: 0−48=−8x Step 6: 6=x Which of the following justifications can be used to justify and support Nigel's work? Select all justifications that are correct.



Step 1 is justified by the Distributive Property. , Step 1 is justified by the Distributive Property. , ,

Step 4 is justified by the Symmetric Property. , Step 4 is justified by the Symmetric Property. , ,

Step 5 is justified by the Property of Additive Inverses. , Step 5 is justified by the Property of Additive Inverses. , ,

Step 2 is justified by the Commutative Property. , Step 2 is justified by the Commutative Property. , ,

Step 6 is justified by the Associative Property.

Answers

Answer:

Step 1 is justified by the Distributive Property.

Step 4 is justified by the Symmetric Property

Step-by-step explanation:

Given the equation solved by Nigel expressed as

4(5x−12)−7x=5x.

First, we need to expand the bracket using the distributive property

4(5x−12)−7x=5x.

4(5x)-4(12) -7x = 5x

20x - 48 - 7x = 5x

Hence Step 1 is justified by the Distributive Property.

Next is to collect the like terms;

20x - 7x - 48 = 5x

Take the difference

13x - 48 = 5x

Next is to subtract 13x from both sides according to the symmetric property

13x - 48 - 13x = 5x - 13x

Hence Step 4 is justified by the Symmetric Property

The resulting equation will be

0-48 = -8x

Divide both sides by -8

-48/-8 = -8x/-8

6 = x

Hence the correct justifications are Step 1 is justified by the Distributive Property AND Step 4 is justified by the Symmetric Property

Find Tan(ß) in the triangle

Answers

Answer:

the answer is

tan (B)=p/b

=5/12

Answer: C)5/12

Step-by-step explanation:

The tangent is equal to the ratio of the opposite cathet to the adjacent one.Then [tex]\bf tg \beta = \dfrac{5}{12}[/tex]

When solving the system of equations, which expression could be substituted for r in the first equation?

3r + 2t = 15

r = 4 – t

Answers

Answer:

4-t

Step-by-step explanation:

We use the second equation and  r = 4-t

every time we see r in the first equation replace it with 4-t

i need alot of help in this

Answers

Not the best way to do it, but it should look something like this.

find the shaded area ..

Answers

Answer:

39°

Step-by-step explanation:

The angle adjacent to 115° in the lower triangle = 180° - 115° = 65°

angle on circle in lower triangle

= 180° - (65 + 76)°  ← angle sum in triangle

= 180° - 141° = 39°

Angles on the circle subtended from the same arc are congruent, then

shaded angle = 39°

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