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3 years ago

What number complete the square x^2 +\- bx

1 answer:

7 0

Take 1/2 of b and squaer it so (b/2)^2 would complete the square (sign doesn't matter becaus when squareing, sign goes positive)

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The proportion of red marbles to blue marbles in a jar is 3 to 8. If there are 56 blue marbles in the jar, how many red marbles

natita [175]

Answer:

Step-by-step explanation:

3:8

8x7 = 56

3x7 = 21

5 0

3 years ago

The picture gives information about a car traveling at a constant speed.

torisob [31]

Answer:

Step-by-step explanation:

Answer

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3 years ago

The number of bacteria in a refrigerated food product is given by N ( T ) = 27 T 2 − 180 T + 100 N(T)=27T2-180T+100, 7 < T &l

NeX [460]

Answer:

$N(T(t))=432t^2-374.4t-118.88$

The number of Bactria after 5.8 hours is 12242.

Step-by-step explanation:

The number of bacteria in a refrigerated food product is given by

$N(T)=27T^2-180T+100$

where, T is the temperature of the food.

When the food is removed from the refrigerator, then the temperature is given by

$T(t)=4t+1.6$

We need to find the composite function N(T(t)).

$N(T(t))=N(4t+1.6)$

$N(T(t))=27(4t+1.6)^2-180(4t+1.6)+100$

$N(T(t))=432t^2+345.6t+69.12-720t-288+100$

$N(T(t))=432t^2-374.4t-118.88$

where N(T(t)) is the number of bacteria after t hours.

Substitute t=5.8 in the above function.

$N(T(5.8))=432(5.8)^2-374.4(5.8)-118.88$

$N(T(5.8))=14532.48-2290.4$

$N(T(5.8))=12242.08$

$N(T(5.8))\approx 12242$

Therefore, the number of Bactria after 5.8 hours is 12242.

7 0

3 years ago

For the graph, what is a reasonable constraint so that the function is at least 600?

Harman [31]

Answer:

I remember taking this too. So, the correct answer is A! I SWEAR ITS RIGHT!

Step-by-step explanation:

7 0

3 years ago

Why did Chase (and many others) oppose passage of the Kansas-Nebraska Act?

Misha Larkins [42]

Some objected to slavery on moral grounds, believing that it violated christian teachings , while others simply did not want to complete economically with slave-owners.

6 0

2 years ago