i have no clue how to do this i need help

Answer:

1. correct

2. incorrect

3. correct

4. correct

5. incorrect

circumference of circle: 2πr              ("r" is the radius)

==========

Answer:

15.7 cm²

Step-by-step explanation:

Given:

[tex]\text{Radius of circle: 2.5 cm}[/tex]

Formula:

[tex]\text{Circumference:} \ 2\pi r[/tex]

Substitute the radius in the circumference formula:

[tex]\implies \text{Circumference:} \ 2\pi r[/tex]

[tex]\implies \text{Circumference:} \ 2\pi (2.5)[/tex]

Take π as 3.14 (Approx. value of π):

[tex]\implies \text{Circumference:} \ 2(3.14)(2.5)[/tex]

Simplify the circumference:

[tex]\implies \text{Circumference:} \ (3.14)(5)[/tex]

[tex]\implies \text{Circumference:} \ 15.7 \ \text{cm}^{2}[/tex]

Answer:

6 days

Step-by-step explanation:

If the first bricklayer can build a wall in 15 days, he can build 1/15 of a wall in one day.

If the second bricklayer can build a wall in 10 days, he can build 1/10 of a wall in one day.

Therefore, if they work together, in one day they will complete

1/15 + 1/10 = 1/6

of the wall.

Since they can complete 1/6 of the wall in one day, they can complete 6/6 or one wall in 6 days.

The value of x, which is the length of ST in the given similar polygons is: 2.4.

If two shapes are similar to each other, the ratio of their corresponding side lengths would be equal.

Thus, since both pentagons are similar, we would have:

CB/RQ = DE/ST

Plug in the values

5/6 = 2/x

Cross multiply

x = (6 × 2)/5

x = 12/5

x = 2.4

Therefore, the value of x, which is the length of ST in the given similar polygons is: 2.4.

Learn more about similar shapes on:

https://brainly.com/question/4381215

Answer:

From the photo above i interpreted the question and drew a triangle to make it easier to solve

Tan is used to solve the question as we were given opposite (as height of the cliff) and to find Adjacent ( the distance between the foot of the cliff to the boat)

Tan θ =Opp/Adj

Tan 22°=15/a

Cross Multiply

aTanθ=15°

Divide both sides by Tan 22

aTan22/Tan22 = 15/Tan 22

a = 15/Tan 22°

a = 37.13 m

Therefore the distance between the foot of the cliff to the boat is 37.13 metres

Answer:

1/4=0.25

Step-by-step explanation:

1/4=25/100

write that as a decimal (numerical expression) its 0.25

Answer:

Step-by-step explanation:

A cube has 6 faces in square shape.

[tex]\boxed{Surface \ area \ of \ cube = 6a^{2}}}[/tex]

Here a is the measurement of edge. a = 8 in

                                   = 6*8*8

                                   = 384 square in

Answer:

113cm² total

area of triangle + area for small rectangle + area of 2nd rectangle

Answer:

27 pies

Step-by-step explanation:

looking at the data we see that for every 26 pies sold, 13 (half) were chocoltae cream pies.

26 divided by 2 = 13

from this we can tell that if she were to sell 54 pies, half of sales would be chocolate, meaning 54 divided by 2

54/2 = 27 pies

Answer:

y=3/2x+6

Step-by-step explanation:

M=slope

B=Y intercept

Answer:

11%.

Step-by-step explanation:

Total miles walked = 5+5+3+3 +2+7+4 = 29.

%age error = [(35-29)/35] * 100

= 4/35 * 100

= 11%.

=

Answer:

A

Step-by-step explanation:

Starting amount =                             307.50

1 month saving = 100

5 month saving = 5*100                   500.00

Total so far                                         807.50

Let the total amount be x

75% *x = 807.50

75/100 x = 807,59                              Multiply both sides by 100

75 x = 807.50 * 100                          

75 x = 80750                                      Divide by 75.

x = 80750 / 75

x = 1076.67

That is not the answer. That's the total cost of the laptop.

The amount needed is

Amount needed = Total Cost - what has been saved

Amount needed = ????

Total Cost = 1076.67

What has been saved = 807.50

Answer

Amount needed = 1076.67 - 807.50 = 269.17

If she adds songs new in constant amount like 2 per week

Then it will form an arithmetic sequence.

Answer:

[tex]f(w)=116+4w[/tex]

Step-by-step explanation:

Iris has 120 songs on her playlist.  Each week, she downloads 4 new songs.  Write an expression to show the total number of songs on Iris's playlist after [tex]w[/tex] weeks.

This scenario can be modeled as an arithmetic sequence since Iris is adding a constant number of songs to her playlist each week.

Arithmetic sequence

General form of an arithmetic sequence: [tex]a_n=a+(n-1)d[/tex]

where:

We are told that she starts with 120 songs on her playlist, so [tex]a=120[/tex]

We are told that she adds 4 new songs each week, so [tex]d=4[/tex]

Also, [tex]n=w[/tex]

Substituting these values into the formula:

[tex]\implies a_w=120+(w-1)4[/tex]

[tex]\implies f(w)=116+4w[/tex]

Expression A is 4 times as great as expression B.

Sure hope this helps you and pls mark me brainiest

Answer:

x=6

Step-by-step explanation:

FG is similar to MN just like GH is similar to NP.  GH is 20, which is double NP,10. Then, MN should be half of FG, 12, so 6 is your answer.

Answer:

2y+1 is the correct answer.

Step-by-step explanation:

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

[tex] { x }^{2} + 6x - 9 + 18 = 0 + 18[/tex]

[tex] {x}^{2} + 6x + 9 = 18[/tex]

[tex] {(x)}^{2} + 2(x)(3) + {(3)}^{2} = 18[/tex]

[tex] {(x + 3)}^{2} = 18[/tex]

Answer:

B -- Recipe 2 (Gluten-Free)

Step-by-step explanation:

Recipe 1

5 / 16 = 0.3125

Recipe 2

3 / 8 = 0.375

Recipe 2 (Gluten-Free) has a higher ratio so it must have a stronger taste.

Answer:

Your answer would be:
B.) The gluten-free batch has the stronger butterscotch

Regular batch:
5 / 21

5 / 21 = 25 / 110




Gluten-free batch:
3 / 11

3 / 11 = 30 / 110


Solution:
30 / 110 > 25 / 110

In conclusion, the gluten-free batch has the stronger butterscotch.

Step-by-step explanation:

Have a great rest of your day
#TheWizzer

Answer: 22puppies 88 adults

Step-by-step explanation: Ratio 1: 4 with 110 = 110/5 =22

if ration 1 is 22 then ratio 4 is 22×4

Answer:

23/12

Step-by-step explanation:

2 1/2 = 5/2(3/3) = 15/6

1 1/3 = 4/3(2/2) = 8/6

15/6 - 8/6 = 7/6

7/6(1/2) = 7/12

16/12 + 7/12 = 23/12

Answer:

Robin earns 635 + 0.02*(12350-6500) dollars.

Step-by-step explanation:

Just know please mark branliest

Answer:

The groups have no common factor and can not be added up to form a multiplication. Final result : 9x8 + 6x4y + 12x4 + y2 ...

Step-by-step explanation:

so did u understand

Answer:

833/90 as a mixed number is 9 and 23/90.

Step-by-step explanation:

How many times does 90 go in to 833? 9 times.

Then take the remaining so you can’t really simplify the fraction so it stays 23/90.

So your final answer is 9 and 23/90.

Brainliest pls!!!

A quadratic equation is an equation whose leading coefficient is of the second degree. The factored form of the quadratic equation x²-x-2 is (x+1)(x-2).

A quadratic equation is an equation whose leading coefficient is of second degree also the equation has only one unknown while it has 3 unknown numbers.

It is written in the form of ax²+bx+c.

The factored form of the quadratic equation can be done in the following manner,

[tex]x^2-x-2\\\\= x^2-2x+x-2\\\\=x(x-2)+(x-2)\\\\=(x+1)(x-2)[/tex]

Thus, the factored form of the quadratic equation x²-x-2 is (x+1)(x-2).

Learn more about Quadratic Equations:

https://brainly.com/question/2263981

Answer:

64 cm²

Right corner rectangle:

Bottom rectangle:

Together:

Answer:

d.  64 cm²

Step-by-step explanation:

Separate the shape into two rectangles (see attached image).

Formula

Area of a rectangle = width × length

Rectangle 1

Area = 2 × 12

        = 24 cm²

Rectangle 2

Area = 5 × (10 - 2)

        = 5 × 8

        = 40 cm²

Total Area

Total area = Area of Rectangle 1 + Area of Rectangle 2

                  = 24 + 40

                  = 64 cm²

Step-by-step explanation:

just follow PEMDAS trust me this will be a lifesaver

Answer:

See below

Step-by-step explanation:

88ft * 12 in/ft = 1056 in    

1056 / 66 = 16 inches each board

by making 65 cuts , you can have 66   sixteen inch boards