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Nina [5.8K]
3 years ago
11

What is the total area of this composite figure rounded to the nearest hundredth?

Mathematics
1 answer:
weqwewe [10]3 years ago
7 0

Answer:

choice #4, total=31.14 mm^2

Step-by-step explanation:

14x2=28 is area of rectangle

1^2xPi=area of small circle

3.14=area of small circle

total=31.14 mm^2

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The number of bacteria (b) in a batch of refrigerated food is given by the function b(t) = 20t2 − 70t + 300, where t is the temp
nata0808 [166]
We want to combine b(t) and t(h) to create a function that described the number of bacteria, b, as a function of time, h. 
This function can be called b(t(h)), or b(h).
Consider the function b(t), or bacteria as a function of temperature. 
b(t) = 20t² - 70t +300
This describes the number of bacteria, given the temperature.

t(h) described the temperature as a function of time, specifically hours after refrigeration:
t(h) = 2h + 3

Since the time h can tell us the temperature t, and the temperature t can tell us the # of bacteria b, we can create a function that tells us the number of bacteria, b, given hours following refrigeration, h.

To do this, we plug t(h) in for every t in the b(t) function:
b(t(h)) = 20 (2h+3)² - 70(2h+3) + 300
We can also call this function b(h), since we now can express b as a function of h.

Simplify the function:
b(h) = 20 (4h²+12h+9)-14h-210+300
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The Answer is B

7 0
3 years ago
Read 2 more answers
Which of the following is a result of the construction of a median of a triangle?
stich3 [128]

Answer:

" A side of the triangle is bisected "

Step-by-step explanation:

We have to choose the option which is the result of the construction of a median of a triangle.

When we draw a straight line from a vertex of a triangle to the midpoint of the opposite side then the straight line is called a median of the given triangle.

Hence, when we draw a median of a triangle then it results " A side of the triangle is bisected ". (Answer)  

8 0
3 years ago
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The temperature in one northern city was -12°F and in a southern city was 57°F. How much warmer
lara [203]

Answer

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12+57=69

3 0
3 years ago
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3241004551 [841]
The percentage of the discount is 75%
8 0
3 years ago
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What is the value of X ?
myrzilka [38]

Answer:

=14

Step-by-step explanation:

In a rhombus, opposite angles are equal.

In the one provided in the question, 5x° is opposite the angle 70°

Let us equate the two.

5x=70

x=70/5

=14°

The value of x in the figure is 14°

4 0
3 years ago
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