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kow [346]
2 years ago
5

Pls help someone pls help

Mathematics
1 answer:
AlexFokin [52]2 years ago
4 0

Answer:

The answer is d.

Draw the ray from 12 downward

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What percent of 9.2 m is 2.5m?
Valentin [98]
27.1739% percent. to find that, all you have to do is multiply 2.5x100. that equals 250. divide this by 9.2, and that is your answer
7 0
3 years ago
Read 2 more answers
the sum of kyras and calebs age is 37. calebs age is equal to twice the quantity of kyras age decreased by 4. let k represent ky
nasty-shy [4]
Caleb - c
Kyras - k

k+c=37
c=2k-4

k+(2k-4)=37
3k=41
k=41/3= ~13.67 years old

c=37-k
c=(111-41)/3
c=70/3=~23.33 years old
7 0
2 years ago
A coffee table is on sale for 20% off the original price of $115.
snow_lady [41]

Answer: Final price of the coffee table is $98.9.

Step-by-step explanation:

Original price of a coffee table = $115

Discount on a coffee table = 20%

So, After discount, it becomes,

\text{ Price}=\frac{100-20}{100}\times 115\\\\\text{ Price}=\frac{80}{100}\times 115\\\\\text{ Price}=0.8\times 115\\\\\text{ Price}=\$92

Rate of sales tax = 7.5%

So, after tax the price becomes,

\text{ Price}=\frac{100+7.5}{100}\times 92\\\\\text{ Price}=\frac{107.5}{100}\times 92\\\\\text{ Price}=\$98.9

Hence, final price of the coffee table is $98.9.

3 0
3 years ago
The graph of a linear function passes
dlinn [17]

the slope goes by several names

• average rate of change

• rate of change

• deltaY over deltaX

• Δy over Δx

• rise over run

• gradient

• constant of proportionality

however, is the same cat wearing different costumes.

(\stackrel{x_1}{2}~,~\stackrel{y_1}{-5})\qquad (\stackrel{x_2}{3}~,~\stackrel{y_2}{6}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{6}-\stackrel{y1}{(-5)}}}{\underset{run} {\underset{x_2}{3}-\underset{x_1}{2}}}\implies \cfrac{6+5}{1}\implies 11

6 0
2 years ago
Element X decays radioactively with a half life of 13 minutes. If there are 110 grams of Element X, how long, to the nearest ten
Vaselesa [24]

Answer : The time taken by the element to decay to 2 grams is, 75.2 minutes

Step-by-step explanation:

Half-life = 13 min

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{13\text{ min}}

k=0.0533\text{ min}^{-1}

Now we have to calculate the time passed.

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

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 0.0533\text{ min}^{-1}

t = time passed by the sample  = ?

a = initial amount of the reactant  = 110 g

a - x = amount left after decay process =  2 g

Now put all the given values in above equation, we get

t=\frac{2.303}{0.0533}\log\frac{110}{2}

t=75.2\text{ min}

Therefore, the time taken by the element to decay to 2 grams is, 75.2 minutes

7 0
3 years ago
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