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3 years ago

Cara started working for $9 per hour. She earns a 4% raise every year. What is her

Mathematics

1 answer:

shutvik [7]3 years ago

5 0

Answer:

Caras hourly wage is $10.08 after 3 years

Step-by-step explanation:

4% of 9

0.04 x 9 = 0.36

then you multiply 0.36 by 3 because you are solving for 3 years.

0.36 x 3 = 1.08

then you add 1.08 to 9 because Cara's wage goes up $1.08 in 3 years

1.08 + 9 = 10.08

answer:

Cara's hourly wage is $10.08 after 3 years of working

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Dinosaur fossils are often dated by using an element other than carbon, like potassium-40, that has a longer half life (in this

Firlakuza [10]

The amount of substance left of a radioactive element of half life, $t_{\frac{1}{2}}$ after a time, t, is given by:

$N(t)=N_0\left( \frac{1}{2} \right)^ \frac{t}{t_{ \frac{1}{2} }}$

Given that potassium-40 has a half life of approximately 1.25 billion years.

The number of years it will take for 0.1% of potassium-40 to remain is obtained as follows:

$0.1=100\left( \frac{1}{2} \right)^ \frac{t}{1.25}} \\ \\ \Rightarrow\left( \frac{1}{2} \right)^ \frac{t}{1.25}}=0.001 \\ \\ \Rightarrow\frac{t}{1.25}\ln\left( \frac{1}{2} \right)=\ln(0.001) \\ \\ \Rightarrow \frac{t}{1.25}= \frac{\ln(0.001)}{\ln\left( \frac{1}{2} \right)} =9.966 \\ \\ t=9.966(1.25)=12.5$

Therefore, the maximum age of a fossil that we could date using 40k is 12.5 billion years.

3 0

3 years ago

Which equation is equivalent to 2x^2 - 24x + 29= 0

Tamiku [17]

The answer to this is D

8 0

4 years ago

A pizza stand offers both hand-tossed and pan pizza. Customers can add any combination of the six available toppings.

damaskus [11]

Answer:

a)14 or b)74

Step-by-step explanation:

I'm assuming the question is how many combinations are there.

A) If toppings can't stack it would be 14, since there are 6 toppings for 2 pies and also you can go without toppings. or *2

B) If toppings can stack, then there can be 74 from being able to stack 6 toppings on one pizza and then two pizzas without it or (6^2)*2+2

4 0

4 years ago

For the function f(x) = x + 7, what is the ordered pair for the point on the graph when x = 2b

Savatey [412]

I hope this helps you

3 0

3 years ago

Read 2 more answers

Find the length of AB. please help!!

mr Goodwill [35]

Answer:

8.6 is the answer

Step-by-step explanation:

A = (3,9)

B = (8,2)

d² = (8-3)² + (2-9)²

or, d² = 5² + (-7)²

or, d² = 25 + 49

or, d² = 74

d = 8.6

6 0

2 years ago