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2 years ago

10

Sabina has for $40 she paid d dollars for lunch and 0.5d dollars for a snack . Which expression represents the amount of money S

abrina has left

1 answer:

rewona [7]2 years ago

6 0

40- ( d+0.5) = the money she has left

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Plz help me do this math problem

Afina-wow [57]

For 100 people, we will need 100/25=4 times the listed quantities.

Saussage rolls = 50*4 = 200 saussage rolls
Sandwiches = 75*4 = 300 sandwiches
Samosas = 25*4 = 100 samosas

6 0

2 years ago

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What is the perimeter of a polygon with vertices at (3, 2) , (3, 9) , (7, 12) , (11, 9) , and (11, 2) ?

Furkat [3]

The perimeter of said polygon is 32.

5 0

2 years ago

If 2.5 mol of dust particles were laid end to end along the equator, how many times would they encircle the planet? The circumfe

Natalka [10]

Answer:

They encircle the planet $3.76\times 10^{11}$ times.

Step-by-step explanation:

Consider the provided information.

We have 2.5 mole of dust particles and the Avogadro's number is $6.022\times 10^{23}$

Thus, the number of dust particles is:

$2.5\times 6.022\times 10^{23}=15.055\times 10^{23}$

Diameter of a dust particles is 10μm and the circumference of earth is 40,076 km.

Convert the measurement in meters.

Diameter: $10\mu m\times \frac{10^{-6}m}{\mu m} =10^{-5}m$

If we line up the particles the distance they could cover is:

$15.055\times 10^{23}\times 10^{-5}=15.055\times 10^{18}=1.5055\times 10^{19}$

Circumference in meters:

$40,076km\times \frac{1000m}{1km}=40,076,000 m$

Therefore,

$\frac{1.5055\times 10^{19}}{40,076,000} = 3.76\times 10^{11}$

Hence, they encircle the planet $3.76\times 10^{11}$ times.

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3 years ago

There are 96 girls and 72 boys who want to participate in 6th grade intramurals.

Gekata [30.6K]

Answer:

i) 24

ii) 4 girls, 3 boys

Step-by-step explanation:

The GCF is 24

96= 24*<u>4</u>

72= 24*<u>3</u>

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<u>I hope this helps!</u>

5 0

2 years ago

Can someone please answer my question Geometric Sequence:<br> 3, 6, 12, 24, …

Whitepunk [10]

Answer:

48

Step-by-step explanation:

You multiply by 2 each time

7 0

3 years ago

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