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Sever21 [200]
2 years ago
13

0.00093721 to 2 significant figures

Mathematics
1 answer:
lions [1.4K]2 years ago
6 0

Answer:0.00094

Step-by-step explanation:

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Ms. berkin is dividing her 4 1/2-foot by 6-foot bulletin board into 4 sections with ribbon stretched from each corner to the opp
Mnenie [13.5K]

Answer:

15 feet.

Step-by-step explanation:

A bulletin board has been shown in the figure below.

Where the width of the board AB = DC = 4\frac{1}{2} = 4.5 feet

and the length of the board AD = BC = 6 feet

As Ms. Berkin is dividing the board by stretching the ribbons to the opposite corners so the length of ribbons will be AC and BD.

In right angle triangle <em>ADC</em>, using Pythagorean Theorem,

AC^2=AD^2+DC^2  = 6^2+4.5^2=36+20.25=56.25

AC= \sqrt{56.25} = 7.5 feet

Similarly in triangle <em>BDC</em>,

BD^2=BC^2+DC^2 = 6^2+4.5^2=36+20.25 =56.25

BD=\sqrt{56.25} = 7.5 feet

Thus, total length of the ribbon used = AC + BD = 7.5 + 7.5 = 15 feet

3 0
3 years ago
Given a rectangular pyramid and a rectangular prism that have the same base and same height, how do their volumes compare? If th
Luden [163]
We know that
volume of <span>a rectangular prism =B*h------> equation 1
where
B is the area of the base
h is the height 

volume of </span><span>a rectangular pyramid=(1/3)*B*h-----> equation 2
where
</span>B is the area of the base
h is the height 
<span>
substitute equation 1 in equation 2
</span>volume of a rectangular pyramid=(1/3)*volume of a rectangular prism
<span>
the answer part a) is
</span>volume of a rectangular pyramid=(1/3)*volume of a rectangular prism
<span>
Part b) </span><span>If the pyramid was full of water, how much of the prism would it fill up?
</span>
the answer part b) is
<span>If the pyramid was filled with water, the prism would only fill 1/3 of its volume

Part c) </span><span>Name another pair of three-dimensional objects that have a relationship similar to this

cones and cylinders

</span>volume of a cylinder =B*h------> equation 1
where
B is the area of the base
h is the height <span>

</span>volume of a cone=(1/3)*B*h-----> equation 2
where
B is the area of the base
h is the height 

substitute equation 1 in equation 2
volume of a cone=(1/3)*volume of a cylinder
4 0
2 years ago
What is 5×20+2raised to the power 2​
Neporo4naja [7]

Answer:

10,404

Step-by-step explanation:

5x20+2=102

102^2=102x102=10,404

7 0
2 years ago
Jada’s babysitter is four times Jada’s current age. In 5 years, Jada will be half her babysitter’s current age.
lora16 [44]

Answer:

24

Step-by-step explanation:

7 0
2 years ago
3. Dr. Silas studies the culture of bacteria under a microscope. The function b1(t) = 1200 (1.8)^t represents the number of bact
Dominik [7]

Answer:

  (a) the initial count of bacteria

  (b) the growth factor (per hour)

  (c) the initial count in the second study

  (d) the difference in initial counts between the two studies

Step-by-step explanation:

(a) 1200 is b1(0), the initial count of bacteria.

__

(b) 1.8 is the growth factor per hour, the factor that multiplies the previous hour's count to get this hour's count.

__

(c) Assuming b2(t) = 1000(1.8)^t, the value 1000 is the initial count of bacteria in the second study, b2(0).

__

(d) The difference between 1200 and 1000 means the first study started with 200 more bacteria than the second study did

3 0
2 years ago
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