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sukhopar [10]
3 years ago
14

I NEED HELP PLS IM ABOUT TO FAIL THIS TEST

Mathematics
2 answers:
JulsSmile [24]3 years ago
8 0

Answer:

R

Step-by-step explanation:

Anvisha [2.4K]3 years ago
5 0

Answer:

2y

Step-by-step explanation:

gvt vvg gbunibnuj

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Find the slope of the equation y=2x+5
Y_Kistochka [10]

Answer:

the slope is 2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
This is the pond in a shape of a prism, it is completely full of water. Colin uses a pump to empty the pond. The level goes down
AnnZ [28]

Answer:

150 minutes

Step-by-step explanation:

P.S - The exact question is -

Given - This is the pond in a shape of a prism, it is completely full of

             water. Colin uses a pump to empty the pond. The level goes

             down by 20 cm in the first 30 min.

To find - Work put how many minutes Colin has to wait for the pond

               to completely empty.

Proof -

Given that,

Height of prism = 1 m

Also,

Base of the prism is trapezium and

Sides of the trapezium are 0.6 m and 1.4 m

Height of trapezium is 2 m

We know that,

Area of trapezium = \frac{1}{2}× (sum of sides)× height

                             =  \frac{1}{2}× (0.6 + 1.4)× 2

                             =  \frac{1}{2}× (2)× 2

                             =  2 m²

⇒Area of trapezium = 2 m²

Now,

Volume of prism = Area of trapezium × height of prism

                          = 2 m² × 1 m

                          = 2 m³

⇒Volume of prism = 2 m³

Now,

Given that the level goes down by 20 cm in the first 30 min

We know

100 cm = 1 m

⇒1 cm = \frac{1}{100} m = 0.01 m

⇒20 cm = 20×0.01 m = 0.2 m

⇒The level goes down by 0.2 m in the first 30 min.

Also,

we know that height of water = height of prism = 1 m

So, the remaining water left in the pond = 1 m - 0.2 m = 0.8 m

Also,

Volume of Remaining water = Area of trapezium × height

                                           = 2 m² × 0.8 m

                                           = 1.6 m³

⇒Volume of Remaining water = 1.6 m³

Now,

Volume of emptied water = Total Volume - Volume of Remaining water

                                       = 2 m³ - 1.6 m³

                                       = 0.4 m³

⇒Volume of emptied water = 0.4 m³

Now,

0.4 m³ water will be empty in 30 minutes

⇒ 1 m³ water will be empty in \frac{30}{0.4} = 75 minutes

⇒1.6 m³ water will be empty in 1.6 × 75 = 120 minutes

∴ we get

The remaining water is empty in 120 minutes

So,

Total pond is empty in 120 + 30 minutes

⇒Total pond is empty in 150 minutes

5 0
3 years ago
The average diameter of a tree is measured over time. The equation y=3/5x, where x is the time in years and y is the diameter in
Fantom [35]
Your answer is b so there you go have a great day!!!!
4 0
3 years ago
Pls help giving brainlyist
dangina [55]

Answer:

x = 0

Step-by-step explanation:

when y is -3, x is 0

5 0
3 years ago
I don’t know what to do
LuckyWell [14K]

original points (-2,0), (2,0), (0,2)

new points (-6.25,0),(6.25,0),(0,6.25)

the point (0,6.25) is the vertex that lies on y -axis

8 0
3 years ago
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