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pishuonlain [190]

3 years ago

5

Please help me with this check

1 answer:

Harrizon [31]3 years ago

5 0

Answer: 5

Step-by-step explanation: Diana makes 3 batches of biscuits usinusing 15 cups of flour. 3 batches 5,10,15

i think

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The circular stream of water from a faucet is observed to taper from a diameter of 20 mm to 10 mm in a distance of 50 cm. Determ

steposvetlana [31]

Solution:

From Bernoulli equation

$\frac{1}{2}$ ρ $V_{1}^{2}$ + ρgh = $\frac{1}{2}$ ρ $V_{2}^{2}$ , where ρ is density of water, h – height difference and $V_{1}$ and $V_{2}$ are the velocities in upper and lower cross sections correspondingly. We take into account that the pressure in both cross-sections is the same and equal to the atmospheric one.

From the continuity and assuming water incompressible:

$\pi r_{1}^{2}$ $V_{1}$ = $\pi r_{2}^{2}$ $V_{2}$ , where $A_{1}$ and $A_{2}$ are the corresponding cross-sections. As the lower diameter is twice as low as the upper one, we can conclude that $V_{1} = \frac{V_{2}}{4}$

Inserting it back into Bernoulli equations produces:

$V_{1} = \sqrt{\frac{2}{15}gh} = 0.26m/s$ and the flow rate is

$\pi r_{1}^{2}V_{1} = \pi r_{2}^{2}V_{2} = 8.10^{-5} \frac{m^{3} }{s}$

6 0

3 years ago

Cyriarra earns $11 each hour she works. Which table represents the relationship between the number of hours she works and her ea

Vanyuwa [196]

Answer:

A

Step-by-step explanation:

you don’t make money for working 0 hours

6 0

3 years ago

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Andres went out to a restaurant for dinner. His total bill before tax and tip was $27.30. He was charged an additional 9% tax an

Fofino [41]

Answer:

$25.66

Step-by-step explanation:

Given data

Total Bill before tax and tip= $27.30

Tax= 9%

Tip= 15%

Let us find the tax

=9/100*27.30

=0.09*27.30

=$2.457

Let us find the tip

=15/100*27.30

=0.15*27.30

=$4.095

Therefore his bill after tax and tip is

=27.30+2.457-4.095

=$25.66

4 0

3 years ago

Is the number 2 composite or prime

Mumz [18]

Answer:

prime Number

Step-by-step explanation:

because 2 can be only divided by itself and one

8 0

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Ranjeet is studying an unknown group of cells and finds that the cells have lysosomes. He concludes that the cell must be an ani

wel

Yes and No they both correct

6 0

3 years ago