Sci = π . 2 . 2 = 12,56 ⇒ 1/2 Sc1 = 1/2 . 12,56 = 6,28

Srec = 6 . 4 = 24

S= 6,28 + 24 = 30,28

the answer is 30,28

ok done. Thank to me :>

Help help help math math

**Answer:**

V = 500 cm³

**Step-by-step explanation:**

V = 4/3 πr³

V = (4/3) × 3 × (5 cm)³

V = 4 × 125 cm³

V = 500 cm³

Plzzzzz help plzzzzz help meeee

The answer would be D. Seven hundred thousand nine hundred and four

Ain.

1.5 ft.

0.5 it.

What is the surface area of the figure in square inches help

l=4inb=0.5ft=6inH=1.5ft=18in

[tex]\\ \sf\Rrightarrow LSA=2(h)(l+b)[/tex]

[tex]\\ \sf\Rrightarrow LSA=2(18)(6+4)[/tex]

[tex]\\ \sf\Rrightarrow LSA=36(10)[/tex]

[tex]\\ \sf\Rrightarrow LSA=360in^2[/tex]

Given that f(x) = x² + 5x, evaluate f(-2).If g(x)=2x + 1, find g(a + h)- g(a).

[tex]\\ \sf\longmapsto f(x)=x^2+5x[/tex]

[tex]\\ \sf\longmapsto f(-2)=(-2)^2+5(-2)[/tex]

[tex]\\ \sf\longmapsto f(-2)=4-10[/tex]

[tex]\\ \sf\longmapsto f(-2)=-6[/tex]

.#2

[tex]\\ \sf\longmapsto g(x)=2x+1[/tex]

[tex]\\ \sf\longmapsto g(a)=2a+1[/tex]

[tex]\\ \sf\longmapsto g(a+h)=2(a+h)+1[/tex]

.Now

[tex]\\ \sf\longmapsto g(a+h)-g(a)[/tex]

[tex]\\ \sf\longmapsto 2(a+h)+1-2a-1[/tex]

[tex]\\ \sf\longmapsto 2a+2h+1-2a-1[/tex]

[tex]\\ \sf\longmapsto 2h[/tex]

noah neck wth noah neck

**Answer:**

a meme

**Step-by-step explanation:**

**Answer:**

meem

**Step-by-step explanation:**

meet bc it is crazy and I luv it

in the diagram below, what is the value of X?

**Answer:**

x=15

**Step-by-step explanation:**

Well we start with the fundamentals of a triangle we know that all the angles of a triangle add up to 180*, so you can start by adding 55* and 65* and end up with 120* then you can add 30* and get 150* then you can take the total of 150* and subtract it from 180* to get 30 now you take that 30 and divide it by 2 and get 15* for the final angle of the triangle.

I need a step by step explanation please on this please so I can understand it better

**Answer:**

P = 29 units

**Step-by-step explanation:**

Let h represent the height of the triangle. Then 2h is the length of the base. The area is given by ...

A = 1/2bh

36 = 1/2(2h)(h) = h²

h = √36 = 6

base = 2h = 12

The base of the isosceles triangle is 12 units, and its height is 6 units.

__

The altitude line makes a right angle with the base, dividing it into two right triangles with sides of length 6. The hypotenuse (s) of each of those is given by the Pythagorean theorem as ...

s = √(6² +6²) = 6√2

Then the perimeter of the triangle is ...

P = base +2s = 12 +2(6√2) = 12(1 +√2) ≈ 28.97 ≈ 29

**The perimeter of the triangle is about 29 units**.

_____

*Additional comment*

The Pythagorean theorem tells you the square of the hypotenuse is the sum of the squares of the other two sides.

For an *isosceles right triangle*, this means *the hypotenuse is √2 times the side length*. (This is a useful relationship to remember, as it is used a lot in algebra and geometry problems.) The acute angles in such a triangle are 45°.

Height be xBase be 2x

AtQ

[tex]\\ \rm\hookrightarrow \dfrac{1}{2}(2x)(x)=36[/tex]

[tex]\\ \rm\hookrightarrow x^2=36[/tex]

[tex]\\ \rm\hookrightarrow x=6[/tex]

Base=12Apply Pythagorean theorem

[tex]\\ \rm\hookrightarrow H^2=6^2+6^2=36+36=72\implies H=8.5[/tex]

Perimeter

2(8.5)+12=17+12=29unitsExplain WHAT WOULD HAPPEN TO motion IF friction DID NDT EXIST.

**Answer:**

If friction did not exist, it would be hard for us to slow down in running, or putting breaks on a car, and more!

If friction did not exist, your car will slide down the road even if you try your best to put the brakes on a car. Friction is a very important force to slow down things that are moving very fast

**Step-by-step explanation:**

Hoped this helped.

[tex]GeniusUser[/tex]

Help me please I do not want a bot answering with a link

[tex]\text{Given that,}\\\\\text{First term,}~ a_1= -\dfrac 16\\\\\text{Common ratio,}~ r = 2 \\\\\text{nth term}~ a_n = a_1 r^{n -1} = -\dfrac 16 \left(2^{n-1}\right)[/tex]

help on both

please !!!

don't give me irrelevant answers pls

**Answer:**

< 1 is 85

X= 50

**Step-by-step explanation:**

ok the first question has 2 angles given 60 and 65

consider this one shows a 90 degree angle and the other does not. so 60 plus 90 equals 150 degrees

the u must say 65 plus x (x being angle 1) must also equal 150

subtract 65 from 150 and you get 85

now the second problem lets use the

Exterior Angle Theorem

The measure of an exterior angle (our w) of a triangle equals to the sum of the measures of the two remote interior angles (our x and y) of the triangle.

using this we know the 40 degree angle and 2x + 20 equals 3x plus 10

so we subtract 10 degrees from both sides and get

2x plus 10 plus 40 equals 3x now this means x equals 10 plus 40 which is 50

4) The yellow submarine was at sea level when the passengers boarded. The journey began with a descent of 40 meters. After examining the sea life, they rose 30 meters. Zach thought he saw an octopus, below. They dove again, a distance of 25 meters to watch the eight ‘legged’ sea creature.

a) Write an expression to describe the journey of the yellow submarine. _________________________________

b) At what depth did they stop to look at the octopus? ______________________

**a) Write an expression to describe the journey of the yellow submarine. **

-> ((0 - 40) + 30) - 25

[] Sea level = 0

[] The descend 40 meters = -40

[] After examining the sea, they rose 30 meters = + 30

[] They dove 25 meters to look at an octopus = -25

**b) At what depth did they stop to look at the octopus?**

-> -35 meters

[] The started at 0 (0), descended 40 (-40), rose 30 (-10), and then sove 25 (-35) to see the octopus

[] Another way to think of this is to simplify our previous expression completely

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Use the Binomial Theorem to expand the binomial. SHOW STEPS

(d-4b)^2

Some one please help!!!

The binomial theorem says

[tex]\displaystyle (a + b)^n = \sum_{k=0}^n \binom nk a^{n-k} b^k \\\\(a+b)^n= \binom n0 a^n + \binom n1 a^{n-1}b + \cdots + \binom n{n-1} ab^{n-1} + \binom nn b^n[/tex]

where

[tex]\dbinom nk = \dfrac{n!}{k!(n-k)!}[/tex]

is the so-called binomial coefficient. The binomial coefficients follow a neat pattern called Pascal's triangle:

1

1 1

1 2 1

1 3 3 1

1 4 6 4 1

where the n-th row, starting with n = 0, lists the coefficient of the k-th term in the sum (with 0 ≤ k ≤ n). For example,

[tex]\displaystyle n=0 \implies (a + b)^0 = \sum_{k=0}^0 \binom nk a^{0-k} b^k = \binom00 a^{0-0} b^0 = \underline{1}[/tex]

[tex]\displaystyle n=1 \implies (a + b)^1 = \sum_{k=0}^1 \binom 1k a^{1-k} b^k = \binom10 a^{1-0} b^0 + \binom11 a^{1-1}b^1 = \underline{1}a + \underline{1}b[/tex]

[tex]\displaystyle n=2 \implies (a + b)^2 = \sum_{k=0}^2 \binom 2k a^{2-k} b^k = \binom20a^{2-0}b^0+\binom21a^{2-1}b^1+\binom22a^{2-2}b^2 = \underline{1}a^2 + \underline{2}ab+\underline{1}b^2[/tex]

Each row starts and ends with 1, and every coefficient in between is obtained by adding the coefficients directly above and to the left. The next row, for instance, would be

1 1 + 4 4 + 6 6 + 4 4 + 1 1

or

1 5 10 10 5 1

which is to say,

[tex]\displaystyle (a + b)^5 = \underline{1}a^5+\underline{5}a^4b+\underline{10}a^3b^2+\underline{10}a^2b^3+\underline{5}ab^4+\underline{1}b^5[/tex]

In your case, we have (d - 4b)², so we take a, b, and n above with d, -4b, and 2, respectively:

[tex]\displaystyle (d - 4b)^2 = \sum_{k=0}^2 \binom 2k d^{2-k} (-4b)^k[/tex]

[tex]\displaystyle (d - 4b)^2 = \sum_{k=0}^2 \binom 2k (-4)^k d^{2-k} b^k[/tex]

[tex]\displaystyle (d - 4b)^2 = \binom20 (-4)^0 d^{2-0} b^0 + \binom21 (-4)^1 d^{2-1} b^1 + \binom22 (-4)^2 d^{2-2} b^2[/tex]

[tex]\displaystyle (d - 4b)^2 = 1\cdot1\cdot d^2\cdot1 + 2 \cdot (-4) d \cdot b + 1 \cdot 16 \cdot 1 \cdot b^2[/tex]

[tex]\boxed{(d - 4b)^2 = d^2 - 8bd + 16b^2}[/tex]

Vern has a collection of pennies, nickels, and dimes. The ratio of the number of pennies to the number of nickels is $9:2,$ and the ratio of the number of nickels to the number of dimes is $3:4.$ If the total worth of Vern's collection is $\$10.96,$ then how many coins do they have in total?

Let be the number of pennies, be the number of nickels, and be the number of dimes that Vern has. The given ratios tell us that and Therefore, so we haveTo turn this into a ratio of integers, we multiply every part of the ratio by Doing this, we see that Therefore, we can think of Vern's collection as consisting of several groups, each of which contains pennies, nickels, and dimes. Let be the number of such groups of coins that Vern has. Then Vern has pennies, nickels, and dimes. Since a penny is worth cent, a nickel is worth cents, and a dime is worth cents, the total worth of Vern's coins in cents is However, we know Vern has or cents, so we can write an equation:Simplifying the left-hand side, we get Dividing both sides by we get This tells us that Vern has groups of coins, for a total of coins.

328

The length of a rectangle is equal to three times the width.Find the dimensions of the rectangle if the perimeter is 86 centimeters.

**Answer:**

**Step-by-step explanation:**

Let w represent the width. Then 3w represents the length. The perimeter formula is ...

P = 2(L +W)

P = 2(3w +w)

86 cm = 8w

w = 10.75 cm

3w = 32.25 cm

**The rectangle is 32.25 cm long and 10.75 cm wide**.

rachel got prepaid debit card with $30 on it. For her first purchase with the card, she bought some bulk ribbon at a craft store. The price of the ribbon was 22 cents per yard. If after that purchase there was $19.88 left on the car, how many yards of ribbon did rachel buy.

**Answer:**

46 yards.

**Step-by-step explanation:**

Subtract the new balance from the original balance:

30.00 - 19.88 = 10.12

Therefore, Rachel spent $10.12

Divide the result by the cost of ribbons per yard:

10.12 ÷ 0.22 = 46

Therefore, **Racheal bought 46 yeards of ribbon.**

Can someone help me with this, and if you can Explain it.

**Answer:**

20

**Step-by-step explanation:**

Since C is the midpoint of BD, BC must be equal to CD. Therefore, we can set the equation:

x+4=3x-10

Solve:

14=2x

x=7

Then we find AC, which is:

2x-5+x+4 = 3x-1

We can plug x in to get:

3*(7)-1=20

720 inches per second to miles per minute

**Answer:**

0.681818 miles per min

**Step-by-step explanation:**

Find the equation of a line parallel to line y=6 that passes through the point (-2,-1)

**Answer:**

y=-1

**Step-by-step explanation:**

yeah-ya...... right?

yall i need help asap! its due in 1hr!!

**Answer:**

for number 6 2x

for number 7 8

**Step-by-step explanation:**

**Answer:**

6. 8x+3x-9x= 2x

7. 2x-3=13

or, 2x=13+3

or, 2x=16

or, x=16/2

Therefore, x=8

20 points.

The midpoint of AB is (-9, -10) and the coordinates of point A are (-1, 9) what are the coordinates of point B?

**Answer:**

B = (-17, -29)

**Step-by-step explanation:**

The midpoint (M) of AB is ...

M = (A +B)/2

Solving for B gives ...

B = 2M -A = 2(-9, -10) -(-1, 9) = (-18+1, -20 -9)

** B = (-17, -29)**

Help ~ with this question~

[tex]4 + 4 \div 5[/tex]

I just added 4 plus 4 to get 8 then divide by 5 which become the decimal 4.8……

**Answer:**

**Step-by-step explanation:**

[tex]\sf 4+4\div 5[/tex]

[tex]\sf 4\div 5 =0.8[/tex]

[tex]\sf 4+0.8[/tex]

[tex]\sf 4.8[/tex]

* Hope it helps, ty 4 pts!

* Have a good day!

help me please it’s urgent how do i solve this I was absent

y would equal 0.6 i believe

**Hi!**

I can help you, no worries!

**Your answer is y = -4/5x - 3**

To solve this is much easier than you think. To "solve for y" we just have to get y on one side of the equal sign all by itself. We can see that it's "1 + y" on the left instead of just the y.

To get y by itself, we just subtract "1" from both sides.

1 + y = -4/5x - 2

-1 -1

y = -4/5x - 3

If you don't know why we have to subtract from *both* sides, think of it like this (it's how I like to think of it).

Each side of the equal sign is a twin. They are * equal* to eachother. If you change something about one twin, such as changing their hair color (or adding a number to one side of the equal sign), you have to do it to both in order for them to be the same. Right?

Hope this helps! Have a great day! :D

simplify the expressions 4y+2x-y+8

Hey there!

4y + 2x - y + 8

= 4y + 2x - 1y + 8

COMBINE the LIKE TERMS

= (4y - 1y + (2x) + (8)

= (4y - y) + (2x) + (8)

= (2x) + (4y - y) + 8

= 2x + 3y + 8

Therefore, your answer is: 2x + 3y + 8

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

**Answer:**

3y+2x+8

**Step-by-step explanation:**

**All you really do is combine the like terms, which in this case is the 3y and the -y. think of the y more as -1y and that is why it's subtrcated.**

May I please receive help?

**no**

.........................................................

Andrew measured a line to be 12.2 inches long. If the actual length of the line is 12.7 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?

The **percent error** of the measurement, to the **nearest tenth** of a percent is **3.9%**

Given:

Length measured = **12.2 inches**

Actual length = **12.7 inches**

**Error*** =* Actual length - Length measured

= 12.7 - 12.2

= **0.5**

**Percentage error** = error / actual value × 100

= 0.5/12.7 × 100

= 0.039370078740157 × 100

= 3.937%

Approximately,

Percentage error = **3.9%**

Therefore, the **percent error** of the measurement, to the **nearest tenth** of a percent is **3.9%**

Learn more about percentage error:

https://brainly.com/question/5493941

The length of a rectangle is 5cm more than its breadth . if the perimeter of the rectangle is 40cm , find the dimension of the rectangle .

Don't give unwanted ans to get the points

no spams and plagiarism ( kindly stay out of the question if you don't know the ans )

well explained ans needed

thx !!

Let the breadth of the rectangle be x cm lenght of the rectangle = ( x + 5 ) cm

perimeter of the rectangle = 2 ( l + b )

2 ( x + x + 5 ) cm 2 ( 2x + 5') cm ( 4x + 10 ) cm

4x + 10 = 40

4x = 40 10 ( transpose 10 to RHS )

x = 30/4 = 7.5 ( divide both sides by 4 )

lenght of the rectangle = x + 5 = 7.5 + 5 = 12.5 cm breadth of the rectangle = x = 7.5 cm
Breadth be xLength be x+5

ATQ

[tex]\\ \sf\longmapsto 2(x+x+5)=40[/tex]

[tex]\\ \sf\longmapsto 2(2x+5)=40[/tex]

[tex]\\ \sf\longmapsto 2x+5=20[/tex]

[tex]\\ \sf\longmapsto 2x=15[/tex]

[tex]\\ \sf\longmapsto x=7.5[/tex]

Length=12.5cmBreadth=7.5cm{(2,12), (3,8), (4,6)}

constant:

equation:

**Answer:**

y = x² - 9x + 26

hope to help!!

Amy is solving the equation using the steps shown.

Which could be the correct next step in solving the equation?

Subtract 2 from both sides of the equation to yield (x 2 – 16) = 0.

Subtract 2 from both sides of the equation to yield (, x , 2, – 16) = 0.

Multiply (x 2 – 16)(x + 2) on the left side of the equation to yield x 3 + 2x 2 – 16x – 32 = 0.

Multiply (, x , 2, – 16)(, x, + 2) on the left side of the equation to yield , x, , 3, + 2, x, , 2, – 16, x, – 32 = 0.

Factor (x 2 – 16) on the left side of the equation to yield (x + 4)(x – 4)(x + 2) = 0.

Factor (, x , 2, – 16) on the left side of the equation to yield (, x, + 4)(, x, – 4)(, x, + 2) = 0.

Add 16 to both sides of the equation to yield x 2(x + 2) = 0.

Add 16 to both sides of the equation to yield , x , 2, (, x, + 2) = 0.

The **correct next step **Amy could take is to **factor **(x^2 - 16) on the left side of the **equation **to yield (x + 4)(x – 4)(x + 2) = 0.

The **equation **is given as:

[tex]\mathbf{(x^2 - 16)(x + 2) = 0}[/tex]

The possible next **steps **are:

1. Expand the **equation **as follows

[tex]\mathbf{x^3+2x^2-16x-32 = 0}[/tex]

2. Express x^2 -16 as a **difference of two squares** as follows

[tex]\mathbf{(x + 4)(x- 4)(x + 2) = 0}[/tex]

However, the **correct step **in this case is to factor x^2 - 16 as a **difference of two squares **to give [tex]\mathbf{(x + 4)(x- 4)(x + 2) = 0}[/tex]

This is so, because the question says Amy is trying to **solve **for variable x.

This step will ensure that she gets the **possible values of x**, unlike **expanding **the whole **equation **.

Hence, the **correct next step **is [tex]\mathbf{(x + 4)(x- 4)(x + 2) = 0}[/tex]

Read more about **equations **at:

https://brainly.com/question/7674413

Karen can type 40 words in 8 minutes. what is her rate in words per minute?

**Answer:**

5 words per minute

**Step-by-step explanation:**

To find her rate in words per minute simply divide the number of words she can type in 8 minutes (40) by 8.

40 / 8 = 5

Her rate is 5 words per minute

One angle of an isosceles triangle measures 34º. Which other angles could be in that

isosceles triangle?

**Answer:**

112º and 73º

**Step-by-step explanation:**

34º could be base angle

Base angles are equivalent

Vertical angle would be = 180 - 34 - 34

Vertical angle = 112º

34º could be vertical angle

Base angles are equivalent

2x = 180 - 34

Base angle = 73º

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