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pishuonlain [190]
2 years ago
14

7 1/2 divided (4 1/2-5 1/8)=

Mathematics
2 answers:
LenKa [72]2 years ago
5 0

First need to do inside the parentheses.

Rewrite the fractions as improper fractions and so they have common denominators:

4 1/2 = 9/2 = 36/8

5 1/8 = 41/8

Now you have 36/8 - 41/8 = -5/8

The problem is now 7 1/2 / -5/8

Rewrite 7 1/2 as 15/2

The problem is now 15/2 / -5/8

When dividing by a fraction change it to multiplication and flip the fraction over:

15/2 x -8/5

Now multiply the top numbers together and the bottom numbers together:

15/2 x -8/5 = (15 x -8) / (2 x 5) = -120/10 = -12

Answer: -12

Ierofanga [76]2 years ago
4 0

Answer:

-12

Step-by-step explanation:

U 2 can help me by marking as brainliest.........

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Step-by-step explanation:

here I have done you can check it out

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2 years ago
Explain how negative powers of 10 can be helpful when writing and comparing small numbers
Luba_88 [7]

Answer:

See explanation

Step-by-step explanation:

Powers of 10 is a very useful way of writing down large or small numbers.

Instead of having lots of zeros, you show how many powers of 10 will make that many zeros.

When you work with small numbers, you should use the negative powers of 10. Just remember for negative powers of 10, move the decimal point to the left. For example,

0.36=3.6\cdot 10^{-1}\ [\text{Move the decimal point one place to the left}]\\ \\0.036=3.6\times 10^{-2}\ [\text{Move the decimal point two places to the left}]\\ \\0.0036=3.6\times 10^{-3}\ [\text{Move the decimal point three places to the left}]\\ \\...

When comparing small numbers, write these numbers in scientific notation (only one non-xero digit must be before point) and then

  • if the powers of 10 are the same in compared numbers are the same, just compare the numbers which are multiplied by these powers of 10. For example, 3.6\times 10^{-6}>2.6\times 10{-6}, because powers are the same (-6) and 3.6>2.6
  • if the powers are different, then the smaller is power, the smaller is number (number with the smaller negative power has more places after decimal point). For example, 3.6\times 10^{-6}> 2.6\times 10^{-7}, because -6>-7
8 0
3 years ago
What is the perimeter of the triangle expressed as a polynomial? 3x+4, x-10, 5x-2
Ganezh [65]
Your answer is 9x-8.

3x+4, x-10, 5x-2. If you combine the x's you get 9x. You can combine the numbers however you'd like. I chose to combine +4 and -2. That's 2. 2-10 = -8. Therefore your answer is 9x-8.
6 0
3 years ago
The ratio of the heights of two similar cylinders is 1:3. If the volume of the smaller cylinder is 67cm^3, find the volume of th
Darina [25.2K]

Answer:

  • 1809 cm³

Step-by-step explanation:

<u>Given the scale factor:</u>

  • k = h/H = 1/3

Since the cylinders are similar, the other dimensions should have same scale factor of 1/3.

<u>The volumes are:</u>

  • v = 67 cm³
  • V = x

<u>Ratio of volumes is the cube of the scale factor, as the volume is the product of 3 dimensions:</u>

  • v/x = k³
  • 67/x = (1/3)³
  • x = 67*27
  • x = 1809 cm³

7 0
3 years ago
Read 2 more answers
Lames:KRIPS,BD GD<br> GOOD:BLOODS
steposvetlana [31]

Umh… yes ig heh

Agreed

8 0
3 years ago
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