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2 years ago

Explain how you would round the numbers 33 and 89 to estimate their sum

2 answers:

8 0

You would round them to the nearest ten. First 33 you would take the 3 in the ones place and if its greater or equal to 5 it bumps the number in the tens up but it isnt so the 3 stays the same and its 30. You do the same with 89 and get 90. That was a bit confusing but its kinda hard to explain:(

tiny-mole [99]2 years ago

6 0

33 rounded would be 30 because the 3 is less than 5 so it stays the same. 89 would round to 90 because the 9 is bigger than 5 so the 8 turns into a 9 then add 30+90=120

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Grades 3, 4, and 5 have their annual field day together. Each grade level is given 16 gallons of water.

sineoko [7]

Answer:

Their will be enough water for each student to consume 2 cups of water.

Step-by-step explanation:

Grade 3, 4 and 5 have their annual field day together . Each grade level is given 16 gallons of water. This means the three grades have 16 × 3 = 48 gallons of water.

The total students involved is 350 student. The total student is the sum of the student in all three grades.

Since the water will be distributed to the students in cups let us convert gallons to cups.

1 gallons = 16 cups

48 gallons = ? cups

cross multiply

48 × 16 = 768 cups.

768 cups of water is available to be shared among the 350 students.

1 student is entitled to 2 cups of water.

350 students will consume 350 × 2 = 700 cups of water.

Therefore, their will be enough water for each student to consume 2 cups of water.

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2 years ago

A rainwater collection system uses a cylindrical storage tank with a diameter of

elixir [45]

Answer:

157079.6

Step-by-step explanation the formula to find volume of a cylinder is pi radius squared(half of diameter) times height.

6 0

2 years ago

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Find the area of ΔAOB<br><br> 3√3 un2<br> 4.5√3 un2<br> 9√3 un2

Greeley [361]

Answer:

The area of the ΔAOB is $9\sqrt{3}\ unit^{2}$ .

Step-by-step explanation:

As given the figure

OA = OB = 6 unit

(Radius of the circle.)

In ΔAOB

As the two sides of a triangle thus there opposite angles are also equal .

∠A = ∠B

Let us assume that ∠A = ∠B = x°

∠A + ∠O + ∠B = 180°

(By using the angle sum property of a triangle.)

∠O = 60°

x° + 60° + x° = 180°

2x = 180 - 60

2x = 120

$x = \frac{120}{2}$

x = 60

∠A = ∠B = 60°

Thus

∠A = ∠B = ∠O = 60°

As all the angles of the ΔAOB are 60° thus ΔAOB is a equilateral triangle .

Also all the sides of the ΔAOB are also equal i.e AB = OA = OB = 6 unit .

Formula

$Area\ of \ a\ equilateral\ triangle = \frac{\sqrt{3}}{4} a^{2}$

Where a is the side of the equilateral triangle .

a = 6 unit

Put in the above formula

$Area\ of \ a\ equilateral\ triangle = \frac{\sqrt{3}}{4}\times 6^{2}$

6² = 36

$Area\ of \ a\ equilateral\ triangle = \frac{\sqrt{3}}{4}\times 36$

$Area\ of \ a\ equilateral\ triangle = 9\sqrt{3}\ unit^{2}$

Therefore the area of the ΔAOB is $9\sqrt{3}\ unit^{2}$ .

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2 years ago

A land surveyor places two stakes 500 ft apart and creates a perpendicular to the line that connects these two stakes. He needs

cupoosta [38]

Answer:
We will choose the last option is correct.
Step-by-step explanation:
A land surveyor places two stakes 500 ft apart and locates the midpoint between the stakes.
From the midpoint, he needs to place another stake 100 ft away that is equidistant to the two original stakes.
Therefore, to apply the Perpendicular Bisector Theorem, the land surveyor would have to identify a line that is "perpendicular to the line connecting the two stakes and going through the midpoint of the two stakes".
Therefore we will choose the last option is correct. (Answer)

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Write 9y−211 as a sum or difference.

In-s [12.5K]

Answer:Difference

Step-by-step explanation:

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2 years ago

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