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2 years ago

Please help fast!!!!

Mathematics

1 answer:

skelet666 [1.2K]2 years ago

4 0

Answer:

if arc CB is 135° Then m(<D) = 67.5

Arc m(<D)=5×67.5=337.5

337.5×2=675

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Plzz help will give brainliest

skad [1K]

Answer: 82.5 - x = R sorry if I am wrong

Step-by-step explanation:

1. We know all the angles in a triangle add up to 180 degrees.

180 = x + x + 15 + R

2. Combine like terms

180 = 2x + 15 + R

3. Subtract 15 from both sides

165 = 2x + R

4. Divide both sides by 2

82.5 = x + R

5. Subtract x from both sides

82.5 - x = R

6 0

2 years ago

Erika paid a self-employment tax last year. She calculated the self-employment tax for different amounts of net earnings and rec

Julli [10]

Answer:

the answer is B

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A rug is to be centered in a room so that the border around it is of a consistent width on all four sides. If the room is 10 ft

aleksley [76]

Answer:

The width of the border can be 9 feet or 3.5 feet.

Step-by-step explanation:

Let the width be x

Length of room = 10 feet

Breadth of room = 15 feet

Length of rug = 10-2x

Breadth of rug = 15-2x

Area of rug = $(10-2x)(15-2x)$

We are given that the area of the rug is 24 square feet.

So, $(10-2x)(15-2x)=24$ ---A

$150-20x-30x+4x^2=24$

$150-24-50x+4x^2=0$

$126-50x+4x^2=0$

$2(x-9)(2x-7)=0$

$x=9,\frac{7}{2}$

$x=9,3.5$

Substitute x =9 in A

$(10-2(9))(15-2(9))=24$

$24=24$

LHS = RHS

Substitute x = 3.5

$(10-2(3.5))(15-2(3.5))=24$

$24=24$

LHS = RHS

So, The width of the border can be 9 feet or 3.5 feet.

7 0

3 years ago

A parallelogram has a base of 10 centimeters and a height of 4 centimeters. What is the area of the parallelogram?

a_sh-v [17]

The area of the parallelogram is 40 centimeters

5 0

2 years ago

Read 2 more answers

I NEED HELP PLS!!!!

hram777 [196]

Answer:

Step-by-step explanation:

For these kind of problems, its best to use a Venn Diagram.

Lets break down the information:

There are 50 students total.

25 take Math competiton classes.

29 take Geometry

12 take history and no math classes

19 take both math classes

Now, make a Venn Diagram.

[Look at the photo attached. Also, the blank spaces in the Venn Diagram are ones that no student takes.]

The 12 taking history and no math classes and 3 kids not taking any of those classes look like they're the only ones not taking either math class.

12 + 3 = 15.

So the answer is 15.

[I'm not sure if this is correct or if I made a mistake so please let me know! Thank you! I hope this helps!]

5 0

3 years ago