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lapo4ka [179]
3 years ago
7

Dont know the answer pls help :(

Mathematics
1 answer:
Luba_88 [7]3 years ago
4 0

Answer:

x=3

Step-by-step explanation:

7x-3=18

7x=18+3

7x=21

x=3

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What function is graphed below?
klasskru [66]

Answer:It's A.

I took the quiz on edge and got it correct.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The length and width of a rectangular room are measured to be 3.955±0.005m. Calculate the area of the room and its uncertainty i
Margarita [4]

Answer:

The area of the room and its uncertainty in square meters is:

15.642±0.040 m^2

Step-by-step explanation:

We know the area of a rectangular room is the multiplication of the length and width:

Area= 3.955m*3.955m\\Area= 15.642 m^2

Now we need to know the uncertainty, the uncertainty of a multiplication is:

\frac{δ_a}{|Area|} =\frac{δ_L}{|L|}+\frac{δ_W}{|W|} (1)

δ_A: Area uncertainty

δ_L: Length uncertainty

δ_W: Width uncertainty

A: Area of the room

L: Length

W: Width

Clearing the uncertainty of the area:

δ_A=(\frac{δ_x}{|x|}+\frac{δ_y}{|y|})*Area (2)

δ_A=(\frac{0.005}{|3.955|}+\frac{0.005}{|3.955|})*15.642 m^2

δ_A= 0.040 m^2

The area of the room and its uncertainty in square meters is:

15.642±0.040 m^2

6 0
3 years ago
Find the area of the shaded region. Round your answer to the nearest hundredth.
PilotLPTM [1.2K]

Answer:

4.56

Step-by-step explanation:

i see a sector hosting 2 semi circles.

this sector area will be .25 of area of circle with radius 4ft.

area of sector = .25*π*16= 4π ft^2

area of semi circle of radius 2ft = .5π*4= 2πft^2

area of 2 semicircles = 4π

the total area of sector = area of 2 semicircles - intersection area + area not covered by semi circles

4π = 4π - intersection area+area not covered by semi circles

intersection area = area not covered by semi circles

now draw a square starting from the intersection point of 2 semi circles at their upper portion. the side will be 2ft

the area of intersection will be covered in the square.

area of intersection = 2*quarter area of circle of radius 2ft - area of square

= 2*(.25π4) - 4

2π-4 = 2.28

area of intersection = area not covered by semicircle

so area of shaded region = 4.56

4 0
2 years ago
What is the equation of the line y-intercept is 3 and the slope is 1
Hoochie [10]

Answer:

y=x+3

Step-by-step explanation:

y=mx+b

where m is the slope and b is the y-intercept so

y=1x+3

simplified

y=x+3

6 0
2 years ago
Lola has 4
RideAnS [48]
The answer to this is 3 3/4
5 0
3 years ago
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