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3 years ago

I need help please anyone

Mathematics

1 answer:

Lisa [10]3 years ago

7 0

I believe it’s 5, 2 you would just you 2,-2 as a line segment

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Use the virtual models to solve 5/8 x 3

HACTEHA [7]

Answer:

5/8 x 3 = 15/8. If it needs to colour up then you to colour 15 of them.

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2 years ago

The average grain of salt is 0.0003 meters wide. Rhinovirus, which causes the common cold, is 0.00000003 meters wide. How many t

algol [13]

Answer:

$1\times 10^4\ times$

Step-by-step explanation:

Given:

Width of average grain of salt is, $w=0.0003\ m$

Width of Rhinovirus is, $W=0.00000003\ m$

Now, expressing each width in scientific notation form, we get:

$w=0.0003\ m = 3\times 10^{-4}\ m\\\\W=0.00000003\ m = 3\times 10^{-8}\ m$

Now, in order to get how many times 'W' is wider than 'w', we divide the two widths. This gives,

$\frac{W}{w}=\frac{3\times 10^{-4}\ m}{3\times 10^{-8}\ m}\\\\\frac{W}{w}=1\times 10^{-4-(-8)}=1\times 10^{-4+8}=1\times 10^4\\\\\therefore W=1\times 10^4\times w$

Therefore, the grain of salt is $1\times 10^4\ times$ wider than Rhinovirus.

5 0

3 years ago

What’s 3.8 - (-7.45)

Varvara68 [4.7K]

it is 11.25................................

6 0

3 years ago

Determine whether each expression was simplified correctly.

astra-53 [7]

Answer:

Only b is correctly simplified.

Step-by-step explanation:

3 0

2 years ago

NEED HELP ASAP!!!! PLEASE!!! Explain the answer!!

xz_007 [3.2K]

She is wrong because she did the square root of 25 multiplied by 2, she should have just done the square root of 50.

For the second part the square root of 50 is 7.07 which rounding would equal 7.1.

Hope this helps.(ﾉ◕ヮ◕)ﾉ*:･ﾟ✧

4 0

3 years ago