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Shtirlitz [24]
3 years ago
12

A box of chalk contains 10 pieces. how many pieces of chalk are in 40 boxes

Mathematics
2 answers:
Oliga [24]3 years ago
4 0
It might be 400 because you might have to multiply

Ivanshal [37]3 years ago
3 0
10 x 40 = 400 so the answer is 400 pieces of chalk.
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I can't seem to answer this question may you guys help me
lina2011 [118]
Options A, B and E are the correct options.

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3 0
3 years ago
5. Find the triangle similar to AABC at the right.
Alex Ar [27]

Answer:

the answer is b

Step-by-step explanation:

7 0
2 years ago
I WILL GIVE BRAINLIEST TO WHOEVER IS CORRECT
babymother [125]

So I believe that the position the triangle is sitting in is the original position that the question started with correct? (Wasn't sure if you moved it before the screenshot or not)

So for all three points of the triangle, move each of them 6 units to the left since the rule has (x-6). If it was x+6, it should be 6 units to the right then.

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6 0
3 years ago
From the quadratic equation 3x² + X - 5 = 0, find alpha square plus beta square​
timama [110]

Answer:

  α² +β² = 3 4/9

Step-by-step explanation:

Assuming α and β are solutions to the equation, it can be factored as ...

  (x -α)(x -β) = 0

Expanding this, we get ...

  x² -(α +β)x +αβ = 0

Dividing the original equation by 3, we find ...

  x² +(1/3)x -5/3 ≡ x² -(α+β)x +αβ   ⇒   (α+β) = -1/3, αβ = -5/3

We know that the square (α+β)² can be expanded to ...

  (α +β)² = α² +β² +2αβ

  α² +β² = (α +β)² -2αβ . . . . . . subtract 2αβ

Substituting the values for (α+β) and αβ, we find the desired expression is ...

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4 0
2 years ago
A submarine descends at a rate of 2.6 kilometers per hour. If the ocean floor is 6.24 kilometers below sea level, how long will
navik [9.2K]

Answer

Find out the how long will it take the submarine to descend to the ocean floor

To proof

Formula

r = \frac{d}{t}

where  d  =  distance traveled (or descended),

r  = rate of travel , t  = time

As given

A submarine descends at a rate of 2.6 kilometers per hour. If the ocean floor is 6.24 kilometers below sea level .

put all the values in the above formula

2.6 = \frac{6.24}{t}

t = \frac{6.24}{2.6}

t = 2.4 hour

it take 2.4 hours the submarine to descend to the ocean floor .

Hence proved


8 0
3 years ago
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