It’s geometry please help me find the perimeter

[tex]\sqrt{2}[/tex]Answer:

Step-by-step explanation:

now the equations looks like

5-4*Cos(x) = y

when 45° gets plugged into Cos(x) we get [tex]\sqrt{2}[/tex]/2 again

5- 4 * ([tex]\sqrt{2}[/tex]/2) = y

5-2[tex]\sqrt{2}[/tex]=y

leave it in that form . it's exact that way

Answer:

2/3

Step-by-step explanation:

Answer:

B.) 12 balls

Step-by-step explanation:

i took the test on k-12!

Answer:

Step-by-step explanation:

Given,

Marks of the four exams = 65, 80, 76, 68

Let the mark for the fifth exam be = x

Mean of the five exams = 70

Therefore,

By the problem,

[tex] = > \frac{65 + 80 + 76 + 68 + x}{5} = 70[/tex]

[tex] = > \frac{289 + x}{5} = 70[/tex]

=> 289 + x = 70 × 5

=> 289 + x = 350

=> x = 350 - 289

=> x = 61

Hence,

Marks of the fifth exam is 61 (Ans)

Answer:

7m^2n (i think)

Step-by-step explanation:

Step-by-step explanation:

y=x+6 ,hence:

x+x+6=12

2x=6

x=3

=> y=9

Answer:

$33

Step-by-step explanation:

You do $660 • 0.025

You have to bring the decimal two places to the left for finding the decimal point.

So you'd get 16.5.

But there's two years. So times it by two.

So it's 33.

Hope this helps

Answer:

x=9,−19

hope this is fast enough

Answer:

I think X=9

Hope this helps :)

Answer:

I think answer is C. 4

Step-by-step explanation:

8:2=4

Answer:

64 feet

Step-by-step explanation:

Complete question

A ball is thrown straight up with initial velocity of 64 ft./s. The height of the ball t seconds after it is thrown is given by the formula s(t)=64t-16t^2. Find the maximum height reached by the ball.

At maximum height, the velocity of the ball is zero, i.e ds/dt  =0

ds/dt = 64 - 32t

64 - 32t = 0

32t = 64

t = 64/32

t = 2secs

Substitute t = 2secs into the given equation;

Recall that s(t)=64t-16t^2

s(2) = 64(2) - 16(2)^2

s(2) = 128 - 16(4)

s(2) = 128 - 64

s(2) = 64 ft

Hence the maximum height reached by the ball is 64 feet

Answer:

The pool that they buy is the circular pool which Marsha wants

The cost of the circular pool is $471.25

Step-by-step explanation:

The parameters of the swimming pools which each of Pete and Marsha wants to buy is given as follows;

The dimensions of the pool Pete wants = 18 feet wide, 20 feet long and 6 feet deep

The dimensions of the circle shaped pool Marsha wants = 20 feet across and 6 feet deep

The price of water, P = 25 cents per cubic foot

The pool they decide to buy = The pool that costs less to fill

The volume of water to fill the pool Pete wants, V₁ = 18 ft. × 20 ft. × 6 ft. = 2,160 ft.³

The cost of filling the pool Pete wants, C₁ = V₁ × P

∴ C₁ = 2,160 ft.³ × 25cents/ft.³ = 54,000 cents = 540 Dollars

The volume of water to fill the pool Marsha wants, V₂ = π·(20 ft.)²/4 × 6 ft. ≈ 1,884.96 ft.³

The cost of filling the pool Marsha wants, C₁ = V₁ × P

∴ C₁ ≈ 1,884.96 ft.³ × 25 cents/ft.³ ≈ 47,124 cents = 471.24 Dollars

The pool that they buy is the circular pool that Marsha wants and it costs $471.24 to fill

Answer:

This doesn’t add up because the hypotenuse is supposed to be the longest side

Step-by-step explanation:

Answer:

It is already in the correct order

Answer: -26+3x

-5×4+3×-6​

Simplifies to:

-20+3x-6

Answer:

6.63

Step-by-step explanation:

Answer:

x= -17/8

Step-by-step explanation:

1 step: take care of the parentheses ( multiply -2 to what is on parentheses)

so x -8x +6 =-12-14x

2 step : move all number with x to the left side

x-8x +14x = -12 -6

7x = -18

x = -18/7

Answer:

angle B = 66.42

Step-by-step explanation:

cos-1 B = [tex]\frac{adjacent}{hypotenuse}[/tex]

cos-1 B = [tex]\frac{2}{5}[/tex]

cos-1 B = 0.40

cos-1 of 0.40 is 66.4218

round to the nearest hundreth = 66.42

angle b = 66.42

Given:

The expression is

[tex]3x^4-81x[/tex]

To find:

The product of prime polynomials which is equivalent to the given expression.

Solution:

We have,

[tex]3x^4-81x[/tex]

Taking out the common factors, we get

[tex]=3x(x^3-27)[/tex]

It can be written as

[tex]=3x(x^3-3^3)[/tex]

[tex]=3x(x-3)(x^2+3x+3^2)[/tex]        [tex][\because a^3-b^3=(a-b)(a^2+ab+b^2)][/tex]

[tex]=3x(x-3)(x^2+3x+3^2)[/tex]

[tex]=3x(x-3)(x^2+3x+9)[/tex]

Therefore, the correct option is B.

Answer:

It's B

Step-by-step explanation:

Answer:

I'm confused on what the question was or are you just making sure it's correct

Answer:

Your statement is correct

Step-by-step explanation:

400 miles/10 hours = 40miles/hour

Answer:

18.78 minutes is my opinion

Step-by-step explanation:

3 ml is filled in 1 minute

1 ml is filled in 1/3 minutes

20 ml is filled in 1/3*20 minutes

=6.22

75 ml is filled in 1/3*75 minutes

=25

25-6.22=18.78

Answer:

10/1

Step-by-step explanation:

You do

6÷ 3/5

Flip the 3/5 then multiply

6 ° 5/3

Reduce the numbers with the greatest common factor 3

So 2•5

And that's 10

Ans is 10.

The numbers in 6 divided by 3/5 are labeled below:

6 = whole number

3 = numerator

5 = denominator

To make it a fraction form answer, you multiply the whole number by the denominator and make the result the new numerator. The old numerator becomes the new denominator:

6 x 5/3 = 30/3

Thus, the answer to 6 divided by 3/5 in fraction form is:

30/3

To make the answer to 6 divided by 3/5 in decimal form, you simply divide the numerator by the denominator from the fraction answer above:

30 / 3 = 10

The answer is rounded to the nearest two decimal points if necessary.

30/3 can be simplified to 10/1.

10/1 is an improper fraction and should be written as 10.

The time the bus should arrive at School Road from Hope Street is 08 : 04.

The time of the latest bus that Jo can catch from the Bus Station is 07 00.

The time the bus takes to travel from the bus station to School Road is 14 minutes.

The table shows that when a bus leaves for School Road from Hope Street,  at 07 54, it will arrive on School Road at 08 04.

The time it takes from the bus station to School road is:

= Arrival time at school road - Departure time from Bus station

= 08 04 - 07 50

= 14 minutes

If Jo wants to be in school road at 8 am by the latest, she needs to leave before :

= 8 am - 14 minutes

= 07 46

The only bus leaving before this time is the 0700 bus from the Bus Station.

Find out more on bus stations at https://brainly.com/question/13209100

#SPJ1

Question is incomplete

Answer:

See Explanation

Step-by-step explanation:

Let the cubic function be

[tex]f(x) = (x,y)[/tex]

First transformation: Vertical compression

Let the scale factor be a where [tex]0 < |a| < 1[/tex]

The new function becomes:

[tex]f'(x) = (x,ay)[/tex]

Next: Reflection over y-axis

The rule is: [tex](x,y)=>(-x,y)[/tex]

The new function becomes:

[tex]f"(x) = (-x,ay)[/tex]

Lastly: Shifted up

Let the units up be b

The rule is: [tex](x,y)=>(x,y+b)[/tex]

So, the new function becomes:

[tex]f"'(x) = (-x,ay+b)[/tex]

Using the rules states above, assume the cubic function is:

[tex]f(x) = x^3[/tex]

Vertical compress [tex]f(x) = x^3[/tex] by [tex]\frac{1}{2}[/tex]

[tex]f'(x) = \frac{1}{2}x^3[/tex]

Reflect [tex]f'(x) = \frac{1}{2}x^3[/tex] over y-axis

Rule: [tex]f"(x)= f'(-x)[/tex]

Solving f'(-x)

[tex]f'(x) = \frac{1}{2}x^3[/tex]

[tex]f'(-x) = \frac{1}{2}(-x)^3[/tex]

[tex]f'(-x) = -\frac{1}{2}x^3[/tex]

So:

[tex]f"(x) = -\frac{1}{2}x^3[/tex]

Lastly: Shift [tex]f"(x) = -\frac{1}{2}x^3[/tex] by 3

Rule: [tex](x,y)=>(x,y+b)[/tex]

[tex]f'"(x) = f"(x + 3)[/tex]

Solving: f"(x + 3)

[tex]f"(x) = -\frac{1}{2}x^3[/tex]

Substitute x + 3 for x

[tex]f"(x + 3) = -\frac{1}{2}(x + 3)^3[/tex]

So:

[tex]f'"(x) = f"(x + 3)[/tex]

[tex]f"'(x) = -\frac{1}{2}(x + 3)^3[/tex]

Answer:

Step-by-step explanation:

The relation is proportional ⇒ Graph of y = 3x goes through origin

So the answer is (B)

50×100÷110=45.454545r6

Answer:

It is safe

Step-by-step explanation:

Using trigonometry :

Cosθ = adjacent / hypotenus

Hypotenus = length of ladder = 12 feets

Adjacent = distance between ladder and wall = 3 feets

Cosθ = 3 /12

Cosθ = 0.25

θ = cos^-1(0.25)

θ = 75.522°

To be safe ladder must be between (70 - 85)°

Sijce ladder is at an elevation of 75.22° ; then it is safe.

Answer:

for the first answer your answer was correct, it was the second answer that was wrong. So the first answer is 2 3/4. The second answer would be 81 centimeters because it grew that much.

Step-by-step explanation:

To find the first answer add the starting height and ending height. To find how much it grew convert the total ending height of the tree to cm by multiply by 100, so 275. Then subtract 356 by 275 because you are finding out how much it grew. Take away 275 from 356 and you get 81

Given:

In a triangle, side x has a length of 15 cm and side y has a length of 4 cm.

To find:

The possible value of side z.

Solution:

In a triangle, the sum of two smaller sides must be greater than the largest side otherwise the triangle is not possible.

Case I: Let x be the largest side, then

[tex]y+z>x[/tex]

[tex]4+z>15[/tex]

[tex]z>15-4[/tex]

[tex]z>11[/tex]               ...(i)

It is clear that [tex]y<x[/tex]. So, y cannot be a largest side.

Case II: Let z be the largest side, then

[tex]x+y>z[/tex]

[tex]15+4>z[/tex]

[tex]19>z[/tex]               ...(ii)

From (i) and (ii), we get

[tex]11<z<19[/tex]

It means the value of z lies between 11 and 19.

From the given options, only 17 is the value which lies between 11 and 19. So, the possible length of side z is 17 cm.

Therefore, the correct option is C.

Answer:

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Answer:

uhmmuhmmmmmmmmuhmmmm