Please i need help, i can't get this question wrong. Please help, please and thank you

Please I Need Help, I Can't Get This Question Wrong. Please Help, Please And Thank You

Answers

Answer 1

Answer:

D. 48

Step-by-step explanation:

4pi r^2

4 × 3 × 2^2 = 48

Answer 2

Answer:

The answer is D.

Step-by-step explanation:

You only have to substitute π value and r value into the formula :

[tex]s.a = 4\pi {r}^{2} [/tex]

[tex]let \: \pi = 3,r = 2[/tex]

[tex]s.a = 4 \times 3 \times {2}^{2} [/tex]

[tex]s.a = 12 \times 4[/tex]

[tex]s.a = 48 \: {m}^{2} [/tex]


Related Questions

convert 3 4/5 into a improper fraction with steps please

Answers

Answer:

Step-by-step explanation:

((3×5)+4)/5=

19/5

The improper fraction is 19/5.

We have to convert [tex]3 \dfrac{4}{5}[/tex]  it into an improper fraction.

To convert into an improper fraction calculation must be done in a single unit following all the steps given below.

 Step1; Write the fraction into simple fractions,

                    [tex]= \dfrac{3 \times 5 + 4}{5}[/tex]

Step2; Solve the following equation.

                    [tex]=\dfrac{15+4}{5}\\\\=\dfrac{19}{5}[/tex]

Hence, The improper fraction is 19/5.

To know more about Fractions click the link given below.

https://brainly.com/question/21449807

Mike bought five items for lunch that Cost a total of 4.55 .Hit dogs cost .1.10 each and cookies cost 0.75 each. What equation could be used to find h the number of hot dogs and c the number of cookies

Answers

Answer:

[tex]c + h = 5[/tex] and

[tex]0.75c + 1.10h = 4.55[/tex]

Step-by-step explanation:

Assume that Mike bought only cookies and hot dogs.

The total can be represented as:

[tex]Cookies + Hot\ Dogs = 5[/tex] --- (1)

And the amount spent can be represented as:

[tex]Cost\ of\ cookies + Cost\ of\ hot\ dogs = 4.55[/tex] --- (2)

Required

Determine the system of equation

Let c represents the number of cookies and h, number of hot dogs.

[tex]Cookies + Hot\ Dogs = 5[/tex] implies [tex]c + h = 5[/tex]

And

[tex]Cost\ of\ cookies + Cost\ of\ hot\ dogs = 4.55[/tex]

Cost of cookies = 0.75 * c

Cost of hot dogs = 1.10 * h

So, we have:

[tex]0.75c + 1.10h = 4.55[/tex]

Hence, the equations are:

[tex]c + h = 5[/tex] and

[tex]0.75c + 1.10h = 4.55[/tex]

Solving for c and h

Make c the subject in [tex]c + h = 5[/tex]

[tex]c = 5 - h[/tex]

Substitute 5 - h for c in [tex]0.75c + 1.10h = 4.55[/tex]

[tex]0.75(5- h) + 1.10h = 4.55[/tex]

[tex]3.75- 0.75h + 1.10h = 4.55[/tex]

[tex]3.75 +0.35h = 4.55[/tex]

Collect Like Terms

[tex]0.35h = 4.55 - 3.75[/tex]

[tex]0.35h = 0.8[/tex]

Solve for h

[tex]h = 0.8/0.35[/tex]

[tex]h = 2.28571428571[/tex]

[tex]h =2[/tex] -- approximated

Recall that:

[tex]c = 5 - h[/tex]

[tex]c = 5 - 2[/tex]

[tex]c =3[/tex]

Solve the following equation for the
variable (a). -3a = 15
a = 5
a = 12
a = -5
a = 18

Answers

Divide -3
-3/-3a = 15/-3
a = -5
-3 x -5 = 15
a negative & negative equals positive!

What are the terms in the expression 7x+4y+1?


1

7 and 4

7x, 4y, and 1

x and y

Answers

Answer:

I believe 7x, 4y, and 1

Step-by-step explanation:

I belive the answer is C.

HELP I need to fine the slope-intercept form. Please it’s a timed assignment I only have two try’s and I already used one

Answers

Answer:

5. y = -1/2x + 6

6.  y = 1/2x + 150

7. y = 10x + 20

8. y = 25x

Step-by-step explanation:

Look at the y-intercept and eliminate the answers you dont need.

Then find the slope of each.

answer please?? 50+40+10=

Answers

the answer to this question is 100
100 Is your answer hope it helps

Find the lengths of all 3 sides of each triangle.

Answers

Answer:

GH=45

HJ=81.6

GJ=53.4

Step-by-step explanation:

hope i helped <3

Read the following prompt and type your response in the space provided.
Write an inequality that could be used to solve the following problem. Do not solve.
Sall's Pizza charges $12 for a large cheese pizza and $2 for each additional topping.
Brian only has $18 to spend on pizza. How many toppings can he get on a large
pizza?

Answers

Answer:

equation form: 12 + 2x = 18

x = 3

lets check the work see if its true

12 + 2(3) = 18

12 + 6 = 18

It Checks!

therefore your answer is 3. He can get 3 different toppings

Step-by-step explanation:

Please help!!!! Thank youuu I’ll make brainlisy

Answers

Answer:

A

Step-by-step explanation:

it isn't a straight line, so it is nonlinear

Does the point (-3,-1) lie on the line with the equation y = 10 - 3x ? Be sure to show your work.

Answers

Replace x in the equation with the x value from the point and solve. If the equation equals the y value from the point the point lies in the line, if it doesn’t equal the y value then it doesn’t lie on the line.

Y = 10 -3(-3) = 10 + 9 = 19

19 doesn’t equal -1 so the point does not lie on the line.

Which statement is true about the graphs of the two lines y=-x+2 and y=-x- ?
O The lines are perpendicular to each other because - and - are opposite reciprocals of each other.
The lines are perpendicular to each other because 2 and - 1 are opposite reciprocals of each other.
O The lines are neither parallel nor perpendicular to each other because - and are not opposite reciprocals
of each other.
The lines are neither parallel nor perpendicular to each other because 2 and - 3 are not opposite reciprocals of
each other.

Answers

Answer:

The correct option is Option C

Step-by-step explanation:

We are given the lines: [tex]y=-\frac{4}{5}x+2 \ and \ \ y=-\frac{5}{4}x-\frac{1}{2}[/tex]

The lines are perpendicular if they have opposite slopes i,e [tex]m_1=-\frac{1}{m_2}[/tex]

In line 1 the slope is [tex]-\frac{4}{5}[/tex] (Comparing with slope-intercept form [tex]y=mx+b[/tex] we get the value of m=-4/5)

In line 2 the slope is [tex]-\frac{5}{4}[/tex] (Comparing with slope-intercept form [tex]y=mx+b[/tex] we get the value of m=-5/4)

The opposite reciprocal of -4/5 is 5/4  

So, the lines are not perpendicular as their slopes are not opposite reciprocal of each other.

If the lines are parallel there slope must be same. Hence lines are not parallel as well.

So, The correct option is Option C

Answer:

c

Step-by-step explanation:

What is the equation for a circle with the center, (0,0) and a radius of 4?

Answers

Answer:

(X-x0)^2 +(y-y0)^2= r^2

R=4

R^2=16

(X-0)^2+(y-0)^2=16

2. Phan went grocery shopping and purchased 8 loaves of bread that cost $1.48 each, 4 bags of milk that
cost $4.33 each, and 2 boxes of cereal that cost $5.25 each.

Answers

Answer:

39.66

Step-by-step explanation:

i think your asking how much his total is going to be you didnt put the whole question so I really dont know

Find the slope and the y-intercept of the line whose equation is -5x+3y-8=0

Answers

slope = 5/3x

y intercept = 8/3

Step-by-step explanation:

3y = 5x + 8 + 0

divide all the numbers by 3

y = 5/3x + 8/3

Solve 10=5m/4
Im Confused, Please Help

Answers

Answer:

m = 8

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define

10 = 5m/4

Step 2: Solve for m

Multiply 4 on both sides:                    40 = 5mDivide 5 on both sides:                      8 = mRewrite:                                               m = 8

Step 3: Check

Plug in m into the original equation to verify it's a solution.

Substitute in m:                    10 = 5(8)/4Multiply:                                10 = 40/4Divide:                                   10 = 10

Here we see that 10 does indeed equal 10.

∴ m = 8 is the solution to the equation.

HELP! Is (0,-5) a solution to 3x - 2y < 10 ?

Answers

Answer:

false

Step-by-step explanation:

3(0) - 2(-5) = 10

the < says it cannot be equal

What formula do you use when you are missing a length of a right triangle?​

Answers

Answer:

Pythagorean Theorum

Step-by-step explanation:

a^2*b^2= c^2

Kevin graphed the inequality x > 1.

A number line going from negative 3 to positive 5. A closed circle is at 1. Everything to the right of the circle is shaded.

What mistake did Kevin make? Explain.

.

Answers

Answer:

Sample: Kevin should have used an open circle on 1, not a closed circle. The closed circle means that 1 is included in the solution set, but the inequality is x > 1, so 1 is not part of the solution.

Mistake done by Kelvin is he  used closed circle at 1 where inequality x > 1 which excludes 1.

What is open and closed circles?

" Closed circle represents that the value is included in the given range while that of open circle represents given number is not included."

According to the question,

Graph of inequality x > 1 represents all values greater 1 excluding 1.

Number line represents -3 to 5.

A closed circle at 1 means 1 is included.

As per the condition  of inequality x > 1 , 1 is excluded while in closed circle 1 is included both are contradictory conditions.

Hence, mistake done by Kelvin is he  used closed circle at 1 where inequality x > 1 which excludes 1.

Learn more about open and closed circles here

https://brainly.com/question/12803998

#SPJ2

6. Complete the pattern: 4, 8, 12, 16,

Answers

Answer:20,24,28,32

Step-by-step explanation:

Answer:

20, 24, 28, 32

Step-by-step explanation:

The sequence is counting by 4. Wasn't sure how many numbers you were looking for, but if you need more than what was given in the answer then keep counting up by 4.

consider these functions f(x)=1/3x^2+4 g(x)=9x-12 what is the value of g(f(x))​

Answers

Given:

Functions are

[tex]f(x)=\dfrac{1}{3}x^2+4[/tex]

[tex]g(x)=9x-12[/tex]

To find:

The value of [tex]g(f(x)).[/tex].

Solution:

We have,

[tex]g(f(x))=g(\dfrac{1}{3}x^2+4)[/tex]        [tex][\because f(x)=\dfrac{1}{3}x^2+4][/tex]

[tex]g(f(x))=9(\dfrac{1}{3}x^2+4)-12[/tex]        [tex][\because g(x)=9x-12][/tex]

[tex]g(f(x))=9(\dfrac{1}{3}x^2)+9(4)-12[/tex]

[tex]g(f(x))=3x^2+36-12[/tex]

[tex]g(f(x))=3x^2+24[/tex]

Therefore, the required function is [tex]g(f(x))=3x^2+24[/tex].

Following are the calculation to the given function:

Given:

[tex]f(x)=\frac{1}{3}x^2+4 \\\\g(x)=9x-12[/tex]

To find:

[tex]g(f(x))=?[/tex]

Solution:

[tex]f(x)=\frac{1}{3}x^2+4 \\\\g(x)=9x-12[/tex]

[tex]\to g(f(x))=g( \frac{1}{3} x^2+4) \\\\[/tex]

                [tex]=9( \frac{1}{3} x^2+4)-12 \\\\=\frac{9}{3}x^2+36-12 \\\\=3x^2+24 \\[/tex]

Therefore, the answer is "[tex]24+3x^2[/tex]" .

Learn more about the g(f(x)):

brainly.com/question/17022176

In rectangle PLAN, PT = x + 3 and TL = 3x - 11. What are the lengths of PA and NL?

Answers

Answer:

PA = 20 units

NL = 20 units

Step-by-step explanation:

Property of a rectangle,

"Diagonals of a rectangle are equal in measure and divide each other in two equal parts"

By using this property,

PT = TL

(x + 3) = (3x - 11)

3x - x = 11 + 3

2x = 14

x = 7

Length of PT = (x + 3) = 10

Length pf PA = 2(PT) = 20 units

Length of NL = PA = 20 units

Can someone please help me out with 15 and 16
If you do just one of them that’d be great.

geometry proofs

Answers

Answer:

Step-by-step explanation:

How many times larger is 4.5 x 105 than 1.8 x 10%?
A. 2.5
B. 270
C. 250
D. 50

Answers

Answer:

c

Step-by-step explanation:

I took an Uber that had a bill of $15.20. I left a 15% tip. How much was the Uber including the tip?

Answers

Answer:

$17.48

Step-by-step explanation:

^^^^^^^^^^^^^

Mrs. Brown uses 1/4 package of graph paper for each class. She needs 1 1/2 packages to serve all of her classes. How
many classes does Mrs. Brown teach?

Answers

The answer is 6.
1/4 goes into 1 1/2 6 times. :)

Answer:

I think the answer is 6 sorry if i'm wrong

Step-by-step explanation:

Use the figure to answer the question.
10 in.
3 in.
What is the area of the shaded portion to the nearest hundredth? Enter the answer in the box.

Answers

The answer is 16.5

You have to find the area of a rectangle, then find the the area of a circle then divide the area of the circle by 2, then subtract the area of the rectangle by whatever you got from dividing the are of the circle.

Please help fast too easy questions for double the points I’ll give brainless also and 10 point!

Answers

Answer:

78.5

Step-by-step explanation:

add 1+2+3+4+5+6+7+100-56=78.5

The base is 19.

The second question is 5^1/2

Could you mark me as brainliest please?

A boy saved over $5. His father gave him $2. The boy now had $y altogether. Write an inequality in y

Answers

Answer:

$7 total

Step-by-step explanation:

$5 + $2 = $7

Two planes travel at a constant speed. Plane A travels 2,700 miles in 5 hours. Plane B travels 3,815 miles in 7 hours. Which plane is faster?

Answers

Answer:

Plane B is faster

Step-by-step explanation:

-(4x - 5) + 16x ≥ -31
can you solve this inequality equation?

Answers

Answer: x≥-3

Step-by-step explanation:

-(4x-5)+16x≥-31

-4x+5+16x≥-31

12x+5≥-31

   -5  -5

12x≥-36

12/12x≥-36/12

x≥-3

hope this helped :)

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