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vesna_86 [32]
3 years ago
8

Can someone please explain this for me

Mathematics
2 answers:
borishaifa [10]3 years ago
7 0

Answer:

here is the simple explanation

Step-by-step explanation:

plz mark me as a brainliest

tangare [24]3 years ago
6 0

Answer:

When dividing fractions, you must have the fractions in a/b form, you must flip the second fraction, then you must change the division sign to multiplication.

To solve the first problem, 1/2 ÷ 3/4, here are the steps:

Step 1: Make sure both fractions are in a/b form, in this case they are

Step 2: Flip the second fraction: so basically we're turning 3/4 into 4/3

Step 3: Change the division sign to multiplication

Step 4: Solve

1/2 • 4/3 = 4/6 = 2/3

To solve the second problem, follow these steps

Step 1: Make sure both fractions are in a/b form, we need to turn 1 1/3 into the improper fraction 4/3. The second fraction does not need to be changed because it is already in a/b form

Step 2: Multiply Across:

4/3 • 3/4 = 12/12 = 1

Step-by-step explanation:

I hope this helps!

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If all the dimensions of the rectangular pyramid are multiplied by 1/5, what is the effect on the volume
Pachacha [2.7K]

Answer:

If all the dimensions of the rectangular pyramid are multiplied by 1/5, the volume will be 125 times smaller.

Step-by-step explanation:

A rectangular pyramid has the following dimensions:

length(l), height(h) and width(w)

The volume is:

V = \frac{l*h*w}{3}

If all the dimensions of the rectangular pyramid are multiplied by 1/5

Then we have that:

l = \frac{l}{5}, w = \frac{w}{5}, h = \frac{h}{5}

The modified volume will be:

V_{M} = \frac{\frac{l}{5}*\frac{w}{5}*\frac{h}{5}}{3} = \frac{\frac{l*w*h}{125}}{3} = \frac{l*h*w}{125*3} = \frac{1}{125}(\frac{l*h*w}{3}) = \frac{V}{125}

So

If all the dimensions of the rectangular pyramid are multiplied by 1/5, the volume will be 1/125 of the original, that is, 125 times smaller.

4 0
3 years ago
Solve the system.
liraira [26]

Answer:

Option D is right,.

Step-by-step explanation:

-a+4b+2c=-8   ... i

3a+b-4c=9      ... ii

b=-1                 ... iii

Substitute the value of b, in i and ii

-a-4+2c =-8 or -a+2c = -4

and 3a-1-4c = 9 or 3a -4c =8

Now we have two equations in two variables

-a+2c =-4 and 3a-4c =8

a = 2c+4:  substitute this in the other equatin.

3(2c+4)-4c =8 Or 2c +12 =8

2c =-4 or c = -2

Substitute in -a+2c =12

-a-2 = -4

a = -2+4 =2

a=2, b=-1 and c =-1 is the solution.


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3 years ago
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What is the measure of arc ac 69° in degree?
Alenkinab [10]
1) 1 degree = 1*10^-10 A= 6.9 * 10^-9 nm
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Autumn cut out a triangular piece of fabric to sew on her comforter. The area of the triangle is 48 square inches, and the heigh
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