i need to find the area but i don’t know the steps

Answer:

90

Step-by-step explanation:

the forumla of a triangle is base times height, divided by 2 and since it has a height of 12 and a base of 15, and if you multiply that it would give you 180, then divide by 2 since it is half a sqaure, which is 90

Answer:

[tex]3 \sqrt{41}[/tex]

Step-by-step explanation:

[tex]12^2 + 15^2 = x^2 \\x = \sqrt{369} = 3\sqrt{41}[/tex]

Answer:

1/10 units^3

Step-by-step explanation:

3/20 x 2/3 = 6/60 = 1/10 units^3

Answer:

3

Step-by-step explanation:

Answer:

k = 2

Step-by-step explanation:

9 = k(6) - 3

12 = 6k

k = 2

Answer:

k = 2

Step-by-step explanation:

We know that in the coordinates (6, 9) 6 is X and 9 is Y. So, we can just plug that into the equation in the problem to get 9 = 6k - 3. Then, after solving, we get the answer as k = 2.

Answer:

x = 2

Step-by-step explanation:

Given

[tex]\frac{1}{6}[/tex] = [tex]\frac{x}{12}[/tex] ( cross- multiply )

6x = 12 ( divide both sides by 2 )

x = 2

Answer: The age of the fossilized leaf is 13829 years.

Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

[tex]t=\frac{2.303}{k}\log\frac{a}{a-x}[/tex]

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = [tex]\frac{18}{100}\times 100=18[/tex]  

a) for completion of half life:  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

[tex]t_{\frac{1}{2}}=\frac{0.693}{k}[/tex]

[tex]k=\frac{0.693}{5600years}=0.00012years^{-1}[/tex]

b) for finding the age

[tex]t=\frac{2.303}{0.00012}\log\frac{100}{18}[/tex]  

[tex]t=13829years[/tex]

The age of the fossilized leaf is 13829 years.

The fossilized leaf is 13855 years old.

Half life is given by:

[tex]N(t)=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} } \\\\Where\ N(t)\ is \ the \ value\ of\ the\ substance\ after\ t\ years,N_o\ is\ the\\original\ value\ and\ t_\frac{1}{2} \ is\ the\ half\ life[/tex]

Given that half life = 5600 years, N(t) = 18% of normal amount = 0.18N₀. Hence:

[tex]0.18N_o=N_o(\frac{1}{2} )^\frac{t}{5600} \\\\0.18=(\frac{1}{2} )^\frac{t}{5600}\\\\ln(0.18)=\frac{t}{5600}ln(0.5)\\\\t=13855\ years[/tex]

The fossilized leaf is 13855 years old.

Find out more at: https://brainly.com/question/4483570

Answer: 180

Step-by-step explanation:

Answer:

121.5

Step-by-step explanation:

40.5*3=121.5

Answer:

the amount of pages typed after 1/3 of an hour is given. Multiply this number by 3 to get the full hour of pages types.

1 5/12 * 3 = 3(1) + 3(5/12)

= 3 5/4

= 4 1/4 pages

Answer:

D; is the right answer hope it helps ;)

Step-by-step explanation:

Answer:

straight angle

Step-by-step explanation:

9x_15+2x_3=180

11x_18=180

11x=180+18

11x=198

x=198÷11

x=18

Answer:

The angles are a linear pair.

x = 18

Step-by-step explanation:

The angles are a linear pair, meaning the angles add up to 180 degrees.

(9x - 15) + (2x - 3) = 180

11x - 18 = 180

11x = 198

x = 18

Answer:

Step-by-step explanation:

use pythagoras

diagonal = [tex]\sqrt{11^{2} + 13^{2} } \\[/tex]

= [tex]\sqrt{290}[/tex]  feet or 17.03 feet

Answer:

A) 7

Step-by-step explanation:

25% = 0.25

28 x 0.25 = 7

Answer:

If the numbers were the same, they'd both be 61

So, try 60 and 62.

x + x+2 = 122

2x = 120

x = 60

Hope that helps!

Answer:

60 and 62

Step-by-step explanation:

To find the answer we need to set up our problem.

For the two consecutive even integers we can call them x and x+2, as adding 2 to x will give us the next even number.

Then we form our equation:

x+x+2=122

Since we have two x we can combine them into a single term

2x+2=122

We then subtract 2 from both sides

2x=120

Divide by 2

x=60

Find the second number by inserting it into

x+2

60+2=62

Answer:

2/5

Step-by-step explanation:

you switch the numbers from the equation

Answer:

number 4

Step-by-step explanation:

Answer:

5: 05

Step-by-step explanation:

35 + 15 + 5 = 55

60 - 55 = 05

5:05

Answer: 5:05 pm. (C)

Step-by-step explanation:

For this, you have to add up the times. 35+15+5. That is 55 minutes. If it would take 55 minutes, you will want to subtract 55minutes from the time you want it to be done. This will give us 5:05pm.

Answer:

7 1/2

Step-by-step explanation:

I have no idea how to solve it I just guessed and got it right lol

Answer:

7 1/2

Step-by-step explanation:

Answer:

20 x

Step-by-step explanation:

Answer:

Divide both the numerator and denominator by the GCD

36 ÷ 36

144 ÷ 36

Reduced fraction:  

1/4

Therefore, 36/144 simplified to lowest terms is 1/4.

Answer:

take a better picture can't see what it says

Answer:

His claim is false.

Step-by-step explanation:

People put nasty fake answers, so I will answer your question here. 16h15 minus 45 minutes is 15h30. If he was gone 48 minutes, he left at 15h27m

Answer:

6,666.67cube units

Step-by-step explanation:

Volume of the square based pyramid = BH/3

B is the base area

H is the height of the pyramid

Base area = Length * length

B = 25 * 25

B = 625 square units

Height = 32units

Volume = 625*32/3

Volume = 6,666.67cube units

Answer:

$326.94

Step-by-step explanation:

For this equation you are going to do a exponential function, since we are working with percents. To do this you will make the equation

(starting price)x(1-percent)^(t) t=years

which will create the equation

800(0.88)^t

You will then plug in t=7

800(0.88)^7 =

800(0.409) =

326.94 (you will cut it off at the hundredth position because it is working with money)

Answer: do PEMDAS and the answer should be 17 I’m not 100%

Step-by-step explanation:

Answer:

I believe it is E. 95.

Hope this helps! Sorry if it doesn't!

Answer:

85

Step-by-step explanation:

180°-50°-35° = 95

180°-95° = 85°

sorry if I got it wrong

Answer:  

[tex]log_b(w^3y^4)[/tex]

Step-by-step explanation:

To write the expression as a single logarithm, or condense it, use the properties of logarithms.  

1) The power property of logarithms states that [tex]log_ax^r = rlog_ax[/tex]. In other words, the exponent within a logarithm can be brought out in front so it's multiplied by the logarithm. This means that the number in front of the logarithm can also be brought inside the logarithm as an exponent.  

So, in this case, we can move the 3 and the 4 inside the logarithms as exponents. Apply this property as seen below:

[tex]3log_bw+4log_by\\=log_bw^3+log_by^4[/tex]

2) The product property of logarithms states that [tex]log_axy = log_ax+log_ay[/tex]. In other words, the logarithm of a product is equal to the sum of the logarithms of its factors. So, in this case, write the expression as a single logarithm by taking the log (keep the same base) of the product of [tex]w^3[/tex] and [tex]y^4[/tex]. Apply the property as seen below and find the final answer.  

[tex]log_bw^3+log_by^4\\=log_b(w^3y^4)[/tex]

So, the answer is [tex]log_b(w^3y^4)[/tex].