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3 years ago

1.What is the area of the circles What is the area of the shaded region?

Mathematics

1 answer:

Rama09 [41]3 years ago

6 0

Answer:

47.32 in^2

Step-by-step explanation:

Area rectangle = 21cm * 10.5cm = 220.5 cm^2

Area circle = pi*r^2

= Pi * 5.25^2

=( 86.59 in^2 )*2

= 173.18 in^2

Shaded region. 220.5 - 173.18 = 47.32 in^2

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The following set of ordered pairs is an example of direct variation, find the constant ratio between the variables. (Hint: Find

Serhud [2]

Direct variation looks like
y=kx, so

k=y/x

<span>(2, 4) k=4/2=2
(5, 10) k=10/5=2
(7, 14) k=14/7=2
(11, 22) k=22/11=2

Answer:A.k=2.</span>

6 0

4 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

4 years ago

Help plz asap<br> find the area

quester [9]

Answer:36 maybe

Step-by-step explanation:

4×3=12

12÷2=6

6×5=30

30+6=36

7 0

3 years ago

Read 2 more answers

Can someone explain to me in words how to do this problem 3x+122=22x-11

inn [45]

When you have this type of problem, you need to combine the like-terms and isolate the variable.

3x + 122 = 22x - 11

Add 11 to both sides to get rid of it

3x + 122 + 11 = 22x - 11 + 11 (-11 + 11=0)

3x + 133 = 22x

Then you would bring the 3x to the other side, so subtract 3x from both sides

3x + 133 = 22x

-3x -3x

133 = 22x - 3x

133 = 19x

Then divide both sides by 19 to isolate x

133/19 = 19x/19

133/19 = 7, so x = 7

Hope this helps!!

8 0

3 years ago

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lapo4ka [179]

The answer is i don’t know or I don’t care and what are we trying to find

5 0

4 years ago