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3 years ago

If y varies directly as x and y is 400 when x is r when x is 4 what is the numeric constant of variation in this relation

Mathematics

1 answer:

NNADVOKAT [17]3 years ago

8 0

Answer: y is 100 times what x is.

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I'm confused on how to find the surface area of a triangular prism

Vinvika [58]

Answer:

The general formula for the total surface area of a right prism is T. S. A. =ph+2B where p represents the perimeter of the base, h the height of the prism and B the area of the base.

Step-by-step explanation:

hope this helps

6 0

3 years ago

Graph the function y = 1 /3 x − 2.

Virty [35]

Answer:

start at the point (0,-2) and go up one and to the right three, keep going until you run out of room. then, draw a straight line through all the points :)

Step-by-step explanation:

hope this helped!

4 0

3 years ago

What are all the fractions are equivalent to 4/12

GarryVolchara [31]

The answers are 1/3, 2/6, 3/9, 4/12

5 0

3 years ago

An irrational number written in

Arlecino [84]

Answer:

B. repeating

Step-by-step explanation:

An irrational number written in decimal form will be nonterminating and non-repeating decimals.

For example we have √2 = 1.4142

This rational number is non-terminating and non-repeating.

4 0

3 years ago

A hospital uses cobalt-60 in its radiotherapy treatments for cancer patients. Cobalt-60 has a half-life of 7

NeTakaya

Answer:

We have 197 g of Co-60 after 18 months.

Step-by-step explanation:

We can use the decay equation.

$M_{f}=M_{i}e^{-\lambda t}$

Where:

M(f) and M(i) are the final and initial mass respectively
λ is the decay constant (ln(2)/t(1/2))
t(1/2) is the half-life of Co
t is the time at the final amount of m

$M_{f}=228e^{-\frac{ln(2)}{7} 1.5}$

$M_{f}=197\: g$

<u>Therefore, we have 197 g of Co-60 after 18 months.</u>

I hope it helps you!

4 0

3 years ago