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san4es73 [151]
3 years ago
9

Geometry

Mathematics
1 answer:
MissTica3 years ago
5 0

Answer:

Root:(-⅗,0)

vertical intercept:(0,5)

Step-by-step explanation:

I'm sorry may be that's the only answer

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Tublu buys a cylindrical water tank of height 1.4m and diameter 1.1m to catch rainwater off his roof. He has a full 2 litres tin
vesna_86 [32]

Answer:

Yes, he will have enough paint to cover the tank with one layer of paint.

Step-by-step explanation:

We are given that Tublu buys a cylindrical water tank of height 1.4 m and diameter 1.1 m to catch rainwater off his roof. He has a full 2 liters tin of paint in his store and decides to paint the tank (not the base).

He uses 250 ml to cover 1 \text{m}^{2}.

From the question, it is clear the area of the tank which needs to be painted is the lateral surface area (because the base is not included).

The lateral surface area of the cylinder = 2\pi rh

where, r = radius of the cylinder =  \frac{\text{Diameter}}{2}  = \frac{1.1 }{2} = 0.55 m

           h = height of the cylinder = 1.4 m

           \pi = 3.142 (given)

So, the lateral surface area of a cylindrical water tank = 2 \times 3.142 \times 0.55 \times 1.4

                                                                                         = 4.84 \text{m}^{2}.

Now, it is given in the question that; Tublu uses 250 ml to cover 1 \text{m}^{2} area, this means that;

To cover 4.84 \text{m}^{2} area, he will use paint = 4.84 \times 250 = 1210 ml

Since he has a full 2 liters tin of paint in his store which is equal to 2000 ml but he need only 1210 ml of paint.

This means that yes, he will have enough paint to cover the tank with one layer of paint.

8 0
3 years ago
I didn't get them all right. Can someone help please?
Tomtit [17]

Answer:

\sqrt{2.56}

6.828...

1.75

14/3

-40

Step-by-step explanation:

A rational number is any number that can be expressed as a ratio.

7 0
3 years ago
Adam uses coconut milk for the dessert. The coconut milk is in a can but he doesn’t know how much the can holds. The can is 12 c
BartSMP [9]
Given:
Diameter = 8 cm
Height = 12 cm
Value of pi = 3

radius is 1/2 of the diameter. r = 8cm/2 = 4cm
Volume = π r² h
V = 3 * (4cm)² * 12 cm
V = 3 * 16cm² * 12 cm
V = 576cm³

Volume of the can is 576cm³. It is also the amount of milk inside the can.<span><span>COMMENTS </span> <span>REPORT</span></span>
4 0
3 years ago
A kayaker needs to paddle north across a 100-m-wide harbor. the tide is going out, creating a tidal current that flows to the ea
Scilla [17]
The velocity or speed of the kayaker going north at a speed of 3 m/s and that of the current going east at a speed of 2 m/s create a resultant speed of √13 m/s. The new distance that has to be traveled by the kayaker in order to move 100 m north is calculated through the equation,
                            3 / √13 = 100 / x 
The value of x is 120 m. The total time it will take for the kayaker to reach the destination is,
                                 t = 120 / √13 = 33.33 s
5 0
3 years ago
Question:
Slav-nsk [51]

Answer: well it depends on what you are aiming for I would say 3 or 5 as there is a 15 so maybe it would want you to divide or multiply I am only in 7th grade but I hope this helps

Step-by-step explanation:

15/3=5 15/3=5

7 0
2 years ago
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