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3 years ago

The half-life of a radioactive kind of tellurium is 40 minutes. How much will be left after 360 minutes if we

Mathematics

2 answers:

satela [25.4K]3 years ago

7 0

Answer:

se4r4335

Step-by-step explanation:

vaieri [72.5K]3 years ago

7 0

Answer:

4335

Step-by-step explanation:

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What are the answers to these 3 problems?

sesenic [268]

The first is the first one tho

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3 years ago

A stack of cards is numbered 1 to 21. Kelly pulls one card from the stack. What is the best approximation for the probability th

ASHA 777 [7]

The correct answer is 48%

There are 10 even numbers from 1 to 21.

That makes the probability of an even number 10 out 21.

10 / 21 x 100 = 48%

8 0

3 years ago

Allison earns $14 an hour plus $20 an hour for every hour of overtime. Overtime hours are any hours more than 35 hours for the w

Ronch [10]

Part a) Create an equation that shows the amount of money earned, E, for working x hours in a week when there is no overtime

Let

E-------> the amount of money earned

x------> number of hours worked

we know that

For $x\leq35$

$E=14x$

therefore

the answer part a) is

$E=14x$

Part b) Create an equation that shows the amount of wages earned, T, for working y hours of overtime

Let

T-------> the amount of money earned

y------> number of hours of overtime

we know that

$T=14*35+20y$

$T=\$490+20y$

therefore

the answer part b) is

$T=\$490+20y$

Part c) Allison earned $610 in 1 week. How many hours (regular plus overtime) did she work?

we know that

$35\ hours=\$490$

$\$610-\$490=\$120$

Divide $\$120$ by $\$20$ ----> to obtain the hours of overtime

$\frac{120}{20}=6\ hours\ of\ overtime$

Allison works

$35+6=41\ hours$

$Regular=35\ hours\\ Overtime=6\ hours$

therefore

the answer part c) is

$Regular=35\ hours\\ Overtime=6\ hours$

4 0

3 years ago

What do the graphs of sine and cosine have in common with the swinging you see?

lilavasa [31]

The relationship between the cosine and sine graphs is that the cosine is the same as the sine — only it’s shifted to the left by 90 degrees, or π/2. The trigonometry equation that represents this relationship is: cosx= sin (x+π/2)

The graphs of the sine and cosine functions illustrate a property that exists for several pairings of the different trig functions. The property represented here is based on the right triangle and the two acute or complementary angles in a right triangle. The identities that arise from the triangle are called the cofunctionidentities.

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3 years ago

Can someone help me with number 5 :((

Vinil7 [7]

The answer is 83
a10=11+(10-1)8

8 0

2 years ago