Hiya! Can you guys help me? For all the four questions? It would mean a lot to me, thank you! I also ask if you guys can explain the steps! Thanks. <3

Hiya! Can You Guys Help Me? For All The Four Questions? It Would Mean A Lot To Me, Thank You! I Also

Answers

Answer 1

Answer:

A = 28.26 cm², P = 38 units, A = 20 units², C = 43.96 units

Step-by-step explanation:

1) Our area of a circle is πr². Since our r = 3 cm, we can just substitute for r.

A = πr²

A = (3.14)(3)²

A = (3.14)(9)

A = 28.26 cm², like in your work.

2) Our formula for perimeter is 2l + 2w. We substitute for l = 12 and w = 7.

P = 2l + 2w

P = 2(12) + 2(7)

P = 24 + 14

P = 38 units

3) The formula for a triangle's area is A = [tex]\frac{1}{2}[/tex]bh, so we substitute for b = 10 and h = 4.

A =  [tex]\frac{1}{2}[/tex] bh

A =  [tex]\frac{1}{2}[/tex] (10)(4)

A =  [tex]\frac{1}{2}[/tex] (40)

A = 20 units²

4) Circumference is 2πr, and we substitute for r = 7.

C = 2πr

C = 2(3.14)(7)

C = (3.14)(14)

C = 43.96 units


Related Questions

PLZ SOMEONE ANSWERS THE MEASURE!!!

Answers

Answer:

150 is the answer.......

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the linear pair.

Applying it we get as,

==> PQR + RQS = 180°

hence angle PQR = 150°

Please help me. its due in 15 minutes.

Answers

Answer:

sorry

Step-by-step explanation:

Answer:

$3,685.9

Step-by-step explanation:

Can someone help me please?​

Answers

Answer:

ill try what's the problem???

Step-by-step explanation:

6. Tim and Jude share some
money in the ratio 3:4. If Tim gets
$450. How much did they share?​

Answers

Answer:

They shared $1050.

Step-by-step explanation:

Divide 450/3 = 150

150 * 4 = 600

If Tim gets $450, then Jude will get $600.

450 + 600 = 1050

If Tim gets $400, then Jude will get $600.

Rewrite each expression by combining like terms.
9tu - 15tu
PLEASE

Answers

Answer:

-6tu

Step-by-step explanation:

The answer would be ~-6tu~

Hope this helps

Have a great day/night

Feel free to ask any questions


3x+y=-9
Y=5x+7
Solve the system of linear equations by substitution

Answers

Answer:

x=-2

Step-by-step explanation:

Substitute y=5x+7 into the equation 3x+y=-9

So you will have, 3x+5x+7=-9

3x+5x=8x

8x+7=-9

8x+7-7=-9-7

8x=-16

x=-2

Mr Tan monthly salary is $2999.52. In order to fill up a membership application form, mr Tan has yo roping off his monthly salary to the nearest dollar. What should he write on the application form for his monthly salary?

Answers

Answer:

three thousand dollars

Step-by-step explanation:

you round up to 3000

The surface area of a right circular cone is 24π in.. The cone is enlarged by multiplying both the radius of the base and the slant height by 2. What is the surface area of the new cone?

A. 48π in.
B. 72π in.
C. 96π in.
D. 192π in.

Answers

Answer:

c 96

Step-by-step explanation:

i took the test hope this helps

The Answer is: C 96?

what is the difference (7² + 8² + 9²) - (6² + 5² + 4²)

Answers

Answer:

199

Step-by-step explanation:

49 + 64 + 81 - 36 +25+16

194 - 36 +25 + 16

-36 + 25 + 16

= -11 + 16 = 5

194 + 5 = 199

7(x + 2) = 6(x + 5) solve for x

Answers

7(x + 2) = 6(x + 5)
7x + 14 = 6x + 30
x + 14 = 30
x = 16

X = 16

7 x + 14 - 6 x = 30

x + 14 = 30

Find the length of the third side. If necessary, write in simplest radical
form.
8
17

Answers

Answer:

9

Step-by-step explanation:

so we know that its a right triangle and 8 and [tex]\sqrt{17}[/tex] are not the hypotenuse.

the equation for this is [tex]a^{2}[/tex]+[tex]b^{2}[/tex]=[tex]c^{2}[/tex] with c being the hypotenuse.

[tex]8^{2}[/tex]+[tex]\sqrt{17} ^{2}[/tex]=[tex]c^{2}[/tex]

64+17=[tex]c^{2}[/tex]

81=c

[tex]\sqrt{81}[/tex]=c

9=c

Answer:

Step-by-step explanation:

To make the use of Pythagoras's theorem clear

[tex]C^{2}[/tex] = [tex]A^{2}[/tex] + [tex]B^{2}[/tex]

where C is they hypotenuse or Hyp

A is one side often called  the Adjacent side

B is the other side often called the Opposite side

when A = 8

and B = [tex]\sqrt{17}[/tex]

then

[tex]C^{2}[/tex]  = [tex]8^{2}[/tex] + [tex]\sqrt{17} ^{2}[/tex]

[tex]C^{2}[/tex] = 64 + 17

[tex]C^{2}[/tex] = 81

C = [tex]\sqrt{81}[/tex]

C = 9

Classify the quadrilateral below.

Answers

Answer:

rhombus

Step-by-step explanation:

what is equivalent to (18x+21)-2x

Answers

Answer:

16x+21

Step-by-step explanation:

The answer would b 16x+21

Need help with 2 math questions pls help me for 20 points.

Answers

The answers are A and B

1. Find the volume of a cube with a side of 9 cm.
2. Find the perimeter of a rectangle whose length is 4
cm and breadth is 3 cm.
3. Find the area of a square of side 11 m.
4. Find the area of a rectangle that is 14 m long and 5
m wide.
5. Find the perimeter of an equilateral triangle with
side 15 cm.
I'm in tension right now I am studying for exams and I'm tired it would be nice if you help me out!

Answers

Step-by-step explanation:

1. Given,

Side of the cube = 9 cm

Therefore, volume of the cube = side × side × side

= 9cm × 9cm × 9cm

[tex] = 729 {cm}^{3} (ans)[/tex]

2. Given,

Length of the rectangle = 4cm

Breadth of the rectangle = 3cm

Therefore, perimeter of the rectangle = 2(l+b)

= 2(4cm + 3cm) = 2 × 7cm = 14 cm (Ans)

3. Given,

Side of a square = 11 m

Therefore, area of the square = side × side

= 11 m × 11 m

[tex] \: = {121cm}^{2} (ans)[/tex]

4. Given,

Length of the rectangle = 14 m

Width of the rectangle = 5 m

Therefore, area of the rectangle = l × b

= 14 m × 5 m

[tex] = 70 {m}^{2} (ans)[/tex]

5. Given,

Side of the equilateral triangle = 15 cm

Therefore, perimeter of the triangle = 3 × side

= 3 × 15 cm = 45 cm (Ans)

Solve the following story problem.
The perimeter of a rectangle is 60 inches. The length is four times the
width.
What are the length and width of the rectangle?
Define your variables.
X =
Equation 1
y =
Equation 2
What is the length?
what is the width?

Answers

Answer:

The perimeter of a rectangle is equal to 2L + 2W, where L = the length of the rectangle and W = the width of the rectangle. So, one equation is

 

2L + 2W = 60

 

From the info given in the problem, we also know that L = 4W. Therefore, we can use the Substitution Method to re-write the first equation as:

 

4W + 2W = 60

 

You should be able to solve this equation for W. Once you find W, you can then calculate L.

Step-by-step explanation:

What is the GCF of 20, 10 and 30?

Answers

Answer:

10 is the GCF

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

Please help! ASAP I really need help​

Answers

Answer:

(-1, -5)

Step-by-step explanation:

That is the intersection point of the two equations when put on a graph.

See picture

Eight angles of a nonagon measure 1389, 154º. 145°, 132°, 148°, 143,
147°and 150°. What is the measure of the ninth angle?

Answers

Answer:

103°

Step-by-step explanation:

The total angle in a nonagon is 1260. To get the missing angle, we add up all the given angle together and subtract it from 1260.

138 + 154º + 145° + 132° + 148° + 143 + 147 + 150 = 1157

1260 - 1157 = 103

Therefore, the missing angle is 103°

(10x + 20) degrees what is the value of x

Answers

Answer:

I think 2

Step-by-step explanation:

10x=20

20 divided by 10= 2

what is the formula of cylinder​

Answers

Answer:

V = πr²h

Step-by-step explanation:

r = radius of circle

h = height of cylinder

Step-by-step explanation:

The formula for the volume of a cylinder is V=Bh or V=πr2h . The radius of the cylinder is 8 cm and the height is 15 cm. Substitute 8 for r and 15 for h in the formula V=πr2h . ... Therefore, the volume of the cylinder is about 3016 cubic centimeters.

Which term is used to describe how light is reflected from a minerals surface

Answers

Answer:

Luster describes the reflection of light off a mineral's surface. Mineralogists have special terms to describe luster. Minerals that are opaque and shiny, such as pyrite, have a metallic luster.

Step-by-step explanation:

Jason bought 4.5 kilograms of cream cheese. How many grams of cream cheese did Jason buy?

Answers

Answer:

the answer is 4500

Step-by-step explanation:

Answer:

He Bought 4,500 Grams of Cream Cheese.

Step-by-step explanation:

Can somebody plz help answer this math problem (only if u know how to do it) thx :3

WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :DDD!

Answers

Answer:

hour hand = 7.5 x 2 for the diameter. C = 2(pi)(15) = approx. 94 centimeters. Minute hand = 9.5 x 2 = 19, C = 2(pi)(19) = approx. 119 centimeters

Step-by-step explanation:

What is the mean of the numbers given below? 1, 5, 7, 9, 11, 16, 18, 20, 30, 35 Report your answer in decimal form. Enter​

Answers

Answer:

15.2

Step-by-step explanation:

1) First, add all of the numbers together. 1+5+7+9+11+16+18+20+30+35=152.

2) Then, divide this by the amount of numbers. There are 10, so it is 152÷10=15.2

3) The answer is 15.2

f(x)=2x^2-5x-20
find f(-9)

Answers

Answer:

The output when x = -9 is f(x) = 187.

Step-by-step explanation:

We are given a function and asked to find the output of that function.

The input of a function refers to a value that is substituted into the function in order to simplify it to a final value.The output of a function is the value that is achieved when the input is substituted into the equation and the function is evaluated.

Our standard function is in the form of a quadratic equation.

[tex]ax^2+bx+c=0[/tex]

Let's check for a change in the presentation of the first value in the equation.

[tex]\bold{f(x)} = 2x^2 - 5x - 20\\\\\bold{f(-9)}[/tex]

We see that x becomes -9. We also know that from conventional algebra, we need to make this change throughout the entire equation. Therefore, since we changed the x in f(x), we need to change it in 2x² - 5x - 20 as well.

[tex]f(-9) = 2(-9)^2 - 5(-9) - 20[/tex]

Now, it's time to simplify this function. Let's first simplify the first term of the function: [tex]2(-9)^2[/tex].

Let's follow PEMDAS in order to simplify the term.

P - Parentheses

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

When using this acronym, make sure that all operations are performed left to right.

We see that -9 is raised to the power of 2, so we square -9. Otherwise, we carry out the following operation.

[tex]-9 \times -9 = 81[/tex]

Then, we see that 2 is multiplied into this value. Therefore, we multiply 81 by 2.

[tex]81 \times 2 = 162[/tex]

Now, we need to subtract the product of 5 and -9.

[tex]5 \times -9 = -45[/tex]

[tex]162 - - 45 = 207[/tex]

Finally, we subtract 20 from this value.

[tex]207 - 20 = 187[/tex]

Therefore, the value of f(-9) is 187.

Given :-

[tex] \sf f(x) = 2 {x}^{2} - 5x - 20[/tex]

To Find :-

[tex] \sf f( - 9)[/tex]

Solution :-

[tex] : \implies \sf f( - 9) = [2 \times( { - 9}^{2} )]-[ 5 \times - 9] - 20[/tex]

[tex] : \implies \sf f( - 9) = 2 \times 81 + 45 - 20[/tex]

[tex]: \implies \sf f( - 9) = 162 + 45 - 20[/tex]

[tex] : \implies \sf f( - 9) = 207 - 20[/tex]

[tex]: \implies \bf f( - 9) = 187[/tex]

PLEASE HELP!!Mathematically, when you square root a number, you
will get 2 solutions.
Sometimes True
Always True
Or Never True
Explain your thinking.

Answers

im pretty sure its sometimes because not every square root has two solutions but a square root for x2 =49 has two solutions

Can somebody Plz ANSWER

Answers

Answer:

The Height of an Average Door is about 80 Inches. So it is 7 Feet

Step-by-step explanation:

Converting 7 feet into Inches it becomes 84, which is the closet to a standard door.

write an algebraic expression for the verbal expression
x more than 7

Answers

Answer:

x+7

Step-by-step explanation:

idek kinda thought that was obvious but who know I could be wrong

The algebraic expression for the verbal expression x more than 7 will be x + 7.

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

The algebraic expression for the verbal expression x more than 7 will be

The numbers will be x  and 7. And the sum of the numbers x and 7 will be given as,

⇒ x + 7

The algebraic expression for the verbal expression x more than 7 will be x + 7.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

What is the missing length?

Answers

64 = 8x

64 = 8×8

answer is 8 km
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