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Inga [223]
3 years ago
13

Problems of the Week (P.O.W.)

Mathematics
1 answer:
ladessa [460]3 years ago
4 0

Answer:

Each pencil cost $0.51

Step-by-step explanation:

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Write 0.634 in scientific notation
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6.34x 10-1 because you take the decimal and put it in between the 6 and the 3 and then you figure out how many times destiny needs to move and if it needs moved to the left it is a negative and since it only does once it’s just -1
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3 years ago
Pls, help me with this math question
olya-2409 [2.1K]

Answer:

Perimeter \sqrt{26}+\sqrt{5}+\sqrt{10}+\sqrt{17} units.  Area 12 square units.

Step-by-step explanation:

Perimeter: total distance around the figure.

Distance Formula:  the distance between points \left(x_1,y_1\right) \text{ and } \left(x_2,y_2\right) is

d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}

AB=\sqrt{(6-1)^2+(2-1)^2}=\sqrt{25+1}=\sqrt{26}

BC=\sqrt{(5-6)^2+(4-2)^2}=\sqrt{1+4}=\sqrt{5}CD=\sqrt{(2-5)^2+(5-4)^2}=\sqrt{9+1}=\sqrt{10}DA=\sqrt{(1-2)^2+(1-5)^2}=\sqrt{1+16}=\sqrt{17}

The perimeter is the sum of all those segment lengths.

One way to find the area of the figure is to surround it with a rectangle, insert some lines so that the areas you do not want can be found and subtracted from the rectangle's area.  (See attached image.)

The area of the large rectangle around the figure is 5 x 4 = 20 square units.

The triangles have areas 1/2 (base) (height):

A. (1/2)(1)(4) = 2 square units

B. (1/2)(3)(1) = 1.5 square units

D. (1/2)(1)(2) = 1 square unit

E. (1/2)(5)(1) = 2.5 square units

Square C.  (1)(1) = 1 square unit

Total of all the area you don't want to include:

2 + 1.5 + 1 + 2.5 + 1 = 8 square units

Subtract 8 from the surrounding rectangle's area of 20, and you get the area of the figure is 20 - 8 = 12 square units.

4 0
3 years ago
Which list shows all the factor pairs of 92?
Arte-miy333 [17]

Answer: b

Step-by-step explanation: since i helped can i have brainlist please :D

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3 years ago
Pleaaaase help meee!
drek231 [11]
You need a circle graph
8 0
3 years ago
Justin has ​$28 to buy a gift for his​ cousin, Julianne. He found a gift for ​$25. With 7​% sales tax added​ on, will Justin hav
motikmotik

Answer:

yes he will pay 26.75

Step-by-step explanation:

25×.07=1.75 25+1.75=26 75

4 0
3 years ago
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