Need help for 2 and 3 fast

Answer:

x ≈ 4.6

Step-by-step explanation:

Reference angle = 75°

Opposite side to reference angle = 17

Adjacent side = x

Applying TOA:

Tan 75 = opp/adj

Tan 75 = 17/x

Multiply both sides by x

x*Tan 75 = 17

Divide both sides by Tan 75

x = 17/Tan 75

x ≈ 4.6

Answer:

3.12 kg.

Step-by-step explanation:

Mass after t years:

The mass of the elements after t years is given by the following equation:

[tex]M(t) = M(0)(1-r)^t[/tex]

In which M(0) is the initial mass and r is the decay rate, as a decimal.

The half life of Cs-137 is 30.2 years.

This means that:

[tex]M(30.2) = 0.5M(0)[/tex]

We use this to find r.

[tex]M(t) = M(0)(1-r)^t[/tex]

[tex]0.5 = M(0)(1-r)^{30.2}[/tex]

[tex](1-r)^{30.2} = 0.5[/tex]

[tex]\sqrt[30.2]{(1-r)^{30.2}} = \sqrt[30.2]{0.5}[/tex]

[tex]1 - r = 0.5^{\frac{1}{30.2}}[/tex]

[tex]1 - r = 0.9773[/tex]

So

[tex]M(t) = M(0)(0.9773)^{t}[/tex]

If the initial mass of the sample is 100kg, how much will remain after 151 years?

This is M(151), with M(0) = 100. So

[tex]M(t) = 100(0.9773)^{t}[/tex]

[tex]M(151) = 100(0.9773)^{151} = 3.12[/tex]

The answer is 3.12 kg.

Answer:mean- 55.8

Median-23

Mode:none

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

(✿◡‿◡) <-- she wants brainliest

The answer is 9

Step-by-step explanation:

I BELIEVE IT IS 9 N I HOPE THIS HELPS

Answer:

3

Step-by-step explanation:

Non Members pay $10 dollars each video 3 x 10= $30

membership costs $21 + 3 videos $3 each $21 + $9 =$30

Price is the same after 3 videos rented

Step-by-step explanation:

x = 65° ----- ( verically opposite Δ )

Answer:

Well if it is 1 to 9 and you press it 4 times you will have 9 possible outcomes

Step-by-step explanation:

The number of possible outcomes when the button is pressed 4 times is; 81 outcomes

This is because the sample space includes odd numbers between 1 and 9 excluding 1 and 9.

Since number of possible choices for one press is 3,then for four presses, we will have;

3⁴ = 81 possible outcomes

Read more on probability outcomes at; https://brainly.com/question/25376712

Answer: no :(

Step-by-step explanation:

Answer:

$92.50

Step-by-step explanation:

$72 - $35 = 37

37 / 0.40 = 92.5

Answer = $92.50

Answer:

6

Step-by-step explanation:

24/4 = 6

hope this helps

Answer:

c

Step-by-step explanation:

Answer:

No solutions

Step-by-step explanation:

If the graphs of the equations do not intersect (for example, if they are parallel), then there are no solutions that are true for both equations. ... When the lines are parallel, there are no solutions, and sometimes the two equations will graph as the same line, in which case we have an infinite number of solutions.

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

Answer:

44

Step-by-step explanation:

remember stem equal tens place and leafs equal the ones place

so we can conclude that the largest number would be 44

Answer:

44

Step-by-step explanation:

To read a stem leaf plot, the stem portion will represent the tens place and the leaf portion represents the ones place. Therefore, the largest number represented by this plot would be 44.

Answer:

Number of 8th Graders = 360 - X  

As you can see this question is not complete and lacks the essential data. But we will try to create a mathematical expression to calculate the number of students on the A honor roll which are from 8th grade.

As we know:

Total number of students on the A honor roll = 360

We are asked to calculate, number of students from 8th grade on the A honor  roll.

So, let's assume that "X" represents all the students who are on the A honor roll except 8th grade.

Mathematical Expression:

Number of 8th Graders = Total number of students on the A honor roll - X

Number of 8th Graders = 360 - X

So, if you know the value of X, you can easily calculate the number of students which are from 8th grade on the A honor roll.

I am not sure if it is wrong I am sorrry.

Answer:

it would be about 4500 bears

Step-by-step explanation:

Answer:

a. nearest integer: -10

b. nearest tenth​: -10.2

Step-by-step explanation:

The estimated integers are a) 10 and b) 10.2

(a) To estimate the square root of 105 to the nearest integer, we can use a rough approximation.

The square root of 100 is 10, and the square root of 121 is 11. Since 105 is closer to 100 than it is to 121, we can estimate the square root of 105 to be approximately 10.

(b) To estimate the square root of 105 to the nearest tenth, we can use a calculator or perform some calculations.

The square root of 105 is approximately 10.246950766. Rounded to the nearest tenth, we get 10.2.

Hence the estimated integers are a) 10 and b) 10.2

Learn more about integers click;

https://brainly.com/question/490943

#SPJ2

Answer:

I think these should help.

Step-by-step explanation:

heyyyyyy

how have you been and what did you u do today?

(Iḿ srry im jst bored)

Answer:

the answer for the graph and equations would be option D

Answer:

[tex] \frac{14}{4} [/tex]

simplified [tex] \frac{7}{2} [/tex]

Step-by-step explanation:

To turn a mixed number into a fraction :

[tex]3\frac{ + 2}{ \times 4} [/tex]

3 x 4 =12 +2 =14 that will be your numerator (top number on a fraction)

and 4 will be your demoninator (bottom number)

Answer:

4.8cm

Step-by-step explanation:

a²+b²=c² where c is the hypotenuse so

Let's plug in those values

11²+b²=12²

b²=12²-11²

b²=23

b=4.8

Answer:

2

Step-by-step explanation:

Given the quadratic equation

3x²+2x-1=0

Let tthe root be α and β

Sum of root α+β = -b/a

Product of root αβ = c/a

Given that;

a = 3, b = 2 and c = -1

α+β = -2/3

αβ = -1/3

To get 1/α + 1/β

Find the LCM

1/α + 1/β

= (α+β)/αβ

= (-2/3)/(-1/3)

= -2/3 * 3/-1

=  2

Hence the required answer  is 2

9514 1404 393

Answer:

  (b)  120°

Step-by-step explanation:

The points on the figure are 120° apart, so each will replace the previous when the figure is rotated 120°.

The figure has 120° rotational symmetry.

__

That is also called "order 3 rotational symmetry" as there are three positions a point can be in that will make the figure look identical.

Answer:

B. 120 & D. 240 since they are both multiples of 120

Step-by-step explanation:

Hi! The person who explained it before me helped but didn't give the exact answer so I just wanted to say what it was so nobody got confused.

Have a nice day and hope this helps! :)

(btw it's right bc I just did it on khan)

Answer:

25

Step-by-step explanation:

2x=x+25

2x-x=25

x=25

Answer:

The measures of two angles are 2x⁰ and (3x + 20)⁰. What is the measure of each angle if x = 14?

b 28 and 62

Answer:smsjsjsjsjsjss

Step-by-step explanation:idididididisjsnsbuxxjhx

Ssjsjsjsjjssjsjmsjsjsjs

Answer:

156.7

Step-by-step explanation:

Answer:

[tex]13) > \\ 14) < \\ 15) < \\ 16) > [/tex]

Answer:

13. >

14. <

15. <

16. >

Step-by-step explanation:

13. √15 - 4 = -0.12 and √15 - 7 = -3.12

14. 2√18 = 8.4 and 2√21 = 9.16

15. -^3√30 = -3.1

16. √8 + 1 = 3.8 and √17 - 2 = 2.1

B

Step-by-step explanation:

it is the only one that has angles that are right next to eachother!

Answer:

Step-by-step explanation:

This is a trapezoid which has an area of

A=h(b2+b1)/2 (average of parallel bases times the height)

The tricky part is finding the height.

tan(90-62)=(9-8)/h

h=1/(tan(28)), now the area equation looks like

A=(b2+b1)/(2(tan28)), b1 and b2 are 8 and 9 so

A=17/(2tan28) ft^2 (exact)

A=15.99 ft^2 (to the nearest hundredth of a square foot)

They might just round it to 16 ft^2

Answer:

40%

Step-by-step explanation:

The first step is to add 18 girls + 12 boys, which gives you the total number of people on the swim team, 30.

Next, you divide the 12 boys by the total swim team members, so:

[tex]\frac{12}{30}[/tex] = 0.4

Then, you multiply 0.4 by 100 to get the percentage:

0.4 × 100 = 40

Therefore, the swim team is made up of 40% boys, and 60% girls.

Answer:

40%

Step-by-step explanation:

30 total kids

12/30 as a decimal is 0.4

to make a decimal into a percent you move the decimal point 2 times to the right

that would be 40

then add the percent to make 40%