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3 years ago

Which of the following is the graph of the quadratic function y= x2 - 4x + 4

Mathematics

1 answer:

olganol [36]3 years ago

7 0

Answer:

graph c

Step-by-step explanation:

it is the longest one

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Tyler bought a large bag of peanuts at a baseball game. Is it more reasonable to say that the mass of the peanuts is 1 gram or 1

Blababa [14]

Would you want only 1 gram of peanuts?
Or one Pound of peanuts? or kilograms

1 Kilo

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3 years ago

7 1/6 divided by 5/9

marshall27 [118]

215/54 i hope that helped you bye thanks

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3 years ago

Read 2 more answers

Kiran jogs at a speed of 6 miles per hour when there are no hills. He plans to jog up a mountain road, which will cause his

Sergio [31]

Answer:

The equation is $t = \frac{8}{6 - r}$

Step-by-step explanation:

First off, we know r is going to be subtracted from 6 somewhere in the expression since the problem says "decreasing by r miles per hour."

If we want to see how long it would take him to jog 8 miles up to the mountain road we would have to take 8 and divide it by 6 - r.

Therefore, the equation is $t = \frac{8}{6 - r}$

Hope this helps, please mark brainliest if possible and give good ratings thanks :)

8 0

3 years ago

PLS HELP WITH THE QUESTION IN THE PICTURE!!!

Ksivusya [100]

Answer:

Step-by-step explanation:

Interesting question. The wording is a bit awkward. I think you have to assume the base is a square and each succeeding base is also a square.

So the first thing to do is to add the bases together.

30*30 + 23*23 + 16*16 + 9*9

Don't add these -- not yet.

Now take the height into consideration

6 *(30*30 + 23*23 + 16*16 + 9*9)

The point is that you only have to multiply by 6 once.

6*(900 + 529 + 256 + 81)

6*(1766)

10596 cubic inches

The answer is D

5 0

3 years ago

A sample of a radioactive substance decayed to 97% of its original amount after a year. (Round your answers to two decimal place

Andrej [43]

Answer:

a) The half life of the substance is 22.76 years.

b) 5.34 years for the sample to decay to 85% of its original amount

Step-by-step explanation:

The amount of the radioactive substance after t years is modeled by the following equation:

$P(t) = P(0)(1-r)^{t}$

In which P(0) is the initial amount and r is the decay rate.

A sample of a radioactive substance decayed to 97% of its original amount after a year.

This means that:

$P(1) = 0.97P(0)$

Then

$P(t) = P(0)(1-r)^{t}$

$0.97P(0) = P(0)(1-r)^{0}$

$1 - r = 0.97$

$P(t) = P(0)(0.97t)^{t}$

(a) What is the half-life of the substance?

This is t for which P(t) = 0.5P(0). So

$P(t) = P(0)(0.97t)^{t}$

$0.5P(0) = P(0)(0.97t)^{t}$

$(0.97)^{t} = 0.5$

$\log{(0.97)^{t}} = \log{0.5}$

$t\log{0.97} = \log{0.5}$

$t = \frac{\log{0.5}}{\log{0.97}}$

$t = 22.76$

The half life of the substance is 22.76 years.

(b) How long would it take the sample to decay to 85% of its original amount?

This is t for which P(t) = 0.85P(0). So

$P(t) = P(0)(0.97t)^{t}$

$0.85P(0) = P(0)(0.97t)^{t}$

$(0.97)^{t} = 0.85$

$\log{(0.97)^{t}} = \log{0.85}$

$t\log{0.97} = \log{0.85}$

$t = \frac{\log{0.85}}{\log{0.97}}$

$t = 5.34$

5.34 years for the sample to decay to 85% of its original amount

8 0

4 years ago