Mathematics College

Question:Find the area of he trapezoid by decomposing it into other shapes.

Answers

Answer 1

Answer:

D) 171 cm²

Step-by-step explanation:

You don’t actually need to decompose it. You could just do it as a trapezoid:

(15+23)/2=19

19x9=171

If you want to decompose it into 2 triangles and a rectangle:

10=15x9=135

1/2(3)(9)=13.5

1/2(5)(9)=22.5

135+13.5+22.5=171 also

Related Questions

1. A triangle with the sides: 6 mm, 7 mm, and 5 mm.

a
unique triangle
b
more than one triangle
c
no triangle possible

2. A triangle with the angles: 24°, 29°, and 127°.

a
unique triangle
b
more than one triangle
c
no triangle possible

3. A triangle with the sides: 7 in, 3 in, and 10 in.

a
unique triangle
b
more than one triangle
c
no triangle possible

Answers

9514 1404 393

Answer:

(a) unique triangle(b) more than one triangle(c) no triangle possible

Step-by-step explanation:

1. Three sides lengths uniquely specify a triangle.

2. Three angle measures specify the shape of a triangle, but not its size. More than one triangle is possible with any given set of angle measures.

3. If the lengths do not satisfy 3 + 7 > 10, which they do not, then no triangle can be formed.

Someone please help me, I’m begging! I will brainliest and everything!! 20 (points) too

Answers

Answer:

I dont think its accepted

Step-by-step explanation:

because 2 out of 3 groups had majority of the people opposing the proposal so I say that it's not accepted.

PLEASE HELP!!! K Is the midpoint of JL Find JK,LK and JL

Answers

Answer:

6x+1 = 8x - 7

8 = 2x

x = 4

JK = 6*4+1 = 25

KL = 8*4 - 7 = 25

giving brainliest *easy*

Answers

Answer:

324 °

Step-by-step explanation:

Answer:

324

Step-by-step explanation:

-.25z=-1.25 What is Z?

Answers

Answer:

z=5

Step-by-step explanation:

Which statement describes the system of equations?
[x+2y-2
Ix-2y--2
It has infinitely many solutions.
O It has no solution.
It has one solution (0, 1).
It has one solution (4, -1).

Answers

Answer:

x+2y=2.....(1)

x-2y=2......(2)

(substrate 1 in 2

x=2

substitutes x in 1

2+2y=2

4y=2

y=4/2

y=2

Find the area of this composite figure

Answers

Answer:

81 m²

Step-by-step explanation:

6x10=60

1/2(6)(7)=21

60+21=81

Answer #3 for 30 points FAST

Answers

for substitution: -2x -2y = 10 y = 4x - 20
6x + 8y = -22 y = -5 (for both plug in the second equation as y in the first equation if that makes sense) (first answer is (3, -8); second answer is (3, -5)

for elimination: 3x + 4y = 2.5 5x - 4y = 25.5 (adding will get you to 8x = 28 bc it gives you 0y; answer is (7/2, -2))
3x + 4y = 2.84 3x - y = 1.79 (gives you 3y = 1.05 if you subtract; answer is (0.48, 0.35))

Answer:

first answer is (3, -8); second answer is (3, -5)

Step-by-step explanation:

I need help please!!

Answers

2x + 3x + 3x + 12 = 180° [Sum of all angles of a triangle is 180°]

=> 7 x = 180° - 12°

=> 7 x = 168°

=> x = [tex]\frac{168}{7}[/tex]°

=> x = 24°

[tex]\\[/tex]

? = 2x + 3x

=> 2×24° + 3×24°

=> 48° + 72°

=> 120°

[tex]\\\\\\[/tex]

HOPE IT HELPS

PLEASE MARK ME BRAINLIEST ☺️

I need help with this question please

Supposed you know that Ls and LY are complementary, and that mLS=3(mLY)-90°

The value of mLY is

Someone help me with this question!!

Answers

9514 1404 393

Answer:

∠Y = 45°

Step-by-step explanation:

The sum of complementary angles is 90°.

∠Y + ∠S = 90°

∠Y + (3(∠y) -90°) = 90°

4∠Y = 180° . . . . . . . . . . . . add 90°, collect terms

∠Y = 45° . . . . . . . . . divide by 4

The measure of angle Y is 45°.

A box contains orange balls and green balls. The number of green balls is eight more than two times the number of orange balls. If there are 59 balls altogether, then how many green balls and how many orange balls are there in the box?

Answers

Answer:

green=42

Orange=17

Step-by-step explanation:

59-8=51, 51÷3=17

orange=17

green =(2×17)+8=34+8=42

Victor tossed a paper cup 40 times and recorded how the cup landed each time. He organized the results in the table shown.
Outcome
Frequency
Right-side up
12
Upside down
7
On its side
21
Which statement is best supported by the results on the table, if Victor tosses the paper cup 100 times?
Less than 30 cups will land on either right-side up or upside down.
More than 50 cups will land on its side.
Less than 30 cups will not land on right-side up.
More than 50 cups will land on upside down.

Answers

Answer:

More than 50 cups will land on its side.

*NEED HELP QUICKLY* son needs a math assignment done within the hour so he can submit it and get a decent grade. i tried helping but math isn’t my strong suit. Thanks.

Answers

Answer:

the horizon is at zero

across the horizon

(Look at the image attached!)

What is the value of x?

Enter your answer in the box.

x = ___°

Answers

Answer:

180-80-55

then you got the answer

I GIVE BRAINLIEST FOR EXPLANATION AND CORRECT ANSWER EXTRA POINTS

Answers

Sin is 15 so x = 15

. Find the mzu.
R
S
7x + 22
A. 31°
B. 12°
C. 74°
D. 106°
4x-5
31
U
T

Answers

Answer:

Step-by-step explanation:

jab tak ki saja sunai gai hai kar lo aur fir

SOMEONE PLEASEEEEEE HELPPPP PLEASEEE only number 16!

Answers

To find the value for the second triangle all you have to do is make (2x-50)=70

A store buys a toy for $4.00. The store marks every items up by 155%.
What is the selling price of the toy?

Answers

Answer:

$10.2

Step-by-step explanation:

4.00 x 155 = 620

620/100 = 6.2

6.2 + 4.00 = 10.2

s i g h
y o u w i l l g e t 5 0 p o i n t s .

Answers

Answer:

d=4

Step-by-step explanation:

because 6x4=24

-6x4=-24

4. Alex decorates flower pots to sell in his shop. He knows that it takes 12 minutes to decorate a
flower pot. Alex works from 9.30 am until 12.50 pm on Tuesday. He takes 20 minutes for a coffee
break at 10.30 am.
How many flower pots does Alex decorate on Tuesday? *
(4 Points)
Enter your answer

Answers

Answer:

He decorates 5 flower pots

Step-by-step explanation:

60 / 12 = 5

Answer:

Step-by-step explanation:

9.30am-10.30am is 1h

1h=60min

60min/12min= 5

he has done 5 pots until his break,

after his break,

10.30am +20min = 10.50am

10.50am-12.50pm is 2h

2h=120min

120min/12min=10

10+5=15

He has done 15 pots

what is 3.405 written in expanded form

Answers

From what this number to solve it

What is the fraction of 12 feet of rope cut into 1/3 pieces?

Answers

Answer:

1/4 hopefully this helps you with work

If 5 men can do a piece of work in 20 days, in how many days could 10 men
do the same work?

Answers

Answer:

Step-by-step explanation:

(U can do mental calculation and guess it will be 10 ..) or else ....

Constant(k) = xy

k= 5 x 20

k= 100

Constant(k) = xy

100 = xy

100 = 10y

y= 100/10 = 10

= 10

I hope im right!!

Please answer, I would be happy :)

Answers

It should be option B. Hope this helps a lot

6. (09.04 LC)
For the equation y = 6x2 – 9x + 22, choose the correct application of the quadratic formula. (5 points)
X
-6+1(6)- 4(-9)(22)
2(-9)
X
6 + (6)- 4-9)(22)
21-9)
--9 +1(-99) - 4(6)(22)
X
2(6)
X
9+(-9) - 4(6)(22)
2(6)

Answers

Given:

The quadratic equation is

[tex]y=6x^2-9x+22[/tex]

To find:

The correct application of the quadratic formula.

Solution:

If a quadratic equation is [tex]ax^2+bx+c=0[/tex], then the quadratic formula is

[tex]x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

We have,

[tex]y=6x^2-9x+22[/tex]

Putting [tex]y=0[/tex], we get

[tex]6x^2-9x+22=0[/tex]

Here, [tex]a=6,b=-9,c=22[/tex]. Using the quadratic formula, we get

[tex]x=\dfrac{-(-9)\pm \sqrt{(-9)^2-4(6)(22)}}{2(6)}[/tex]

The correct application of the quadratic formula is [tex]x=\dfrac{-(-9)\pm \sqrt{(-9)^2-4(6)(22)}}{2(6)}[/tex].

Note: The options are not in proper format.

You purchase a $22000 car. If you pay $1980 in sales tax for the car, what is the tax rate?

Answers

Answer:

Step-by-step explanation:

u going to say 1980 divided by 22000 multiplied by 100 to get answer

y=|x-5|+|x+5|. if x>5

Answers

Answer: Y=|20|

Step-by-step explanation:

|5+5|+|5+5| =|20|

what are the roots of the equation 3x^2 =7x+2

Answers

Answer:

Hope this helps!!!! ;)

Step-by-step explanation:

Describe these points with a double inequality

Answers

Answer:

-2<x[tex]\leq[/tex]11

Step-by-step explanation:

The line spans from -2 to 11 so we know that those are the values that will be in our expression. -2 has an open circle, therefore, we do not include that value. So any value greater than -2 but not equal to -2 is included. -11 has a closed circle that ends the line segment. This means that any value less than 11 or greater than 11 is included. Therefore the expression would be x is greater than -2 and less than or equal to 11.

Points on the number will be defined by the inequality → -2 < x ≤ 11.

Symbols to describe an inequality on a number line: A hollow circle describes the value where the hollow circle is

located will not be included and the inequality will be denoted by

(< or >).

Solid circle describes the value to be included and denoted by

(≤ or ≥).

Dark line between two numbers denotes the values of 'x'

between the numbers,

From the number line given in the picture,

Dark line starts with a hollow circle from x = -2

Dark line ends with a dark circle at x = 11.

Inequality for this situation will be → -2 < x ≤ 11

Therefore, points on the number will be defined by the inequality → -2 < x ≤ 11.

Learn more about the inequality for a number line,

https://brainly.com/question/22512994?referrer=searchResults

50 points

tan⁻¹(√3) − cot⁻¹(−√3) is equal to ???

Can anyone solve this?

Answers

Answer:

I think it -pie/2 but I could be wrong

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