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3 years ago

Please help i'd appreciate it!

Mathematics

1 answer:

creativ13 [48]3 years ago

7 0

Answer:

|-8|=8

|10|=10

Step-by-step explanation:

any negative number between the two slashes '||' equals to always a positive number

and a positive number between the two slashes '||' remains the same

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Use the graph below to find the ratio of work miles to total miles

Sauron [17]

Is actually (4)
$\frac{8}{25}$
6,400 divde 20,000

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3 years ago

Bianca makes an error when she tries to write an expression equivalent to

Anestetic [448]

Answer:

57 - 25y

Step-by-step explanation:

when 15 was distributed it should be '45 - 15y' instead of '45 + 15y'

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3 years ago

What is Arrhenius's definition of an acid?

Ann [662]

<h2>Hey there! </h2>

<h3>The correct option will be (B). a substance that dissociatesin water to produce hydrogen ions (H+).</h3>

<h2>Explanation:</h2>

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2 years ago

All the pupils at a primary school come from one of three villages: Elmswell, Haughley or Woolpit. 1/4 of the pupils come from E

Jlenok [28]

Answer:

Step-by-step explanation:

Given that:

All the pupils at a primary school come from one of three villages: Elmswell, Haughley or Woolpit.

$\frac{1}{4}$ of the pupils come from Elmswell

$\frac{3}{5}$ of the pupils come from Haughley

102 pupils come from Woolpit.

To find:

Total number of pupils in the school.

Solution:

Let total number of pupils = $100x$

So, number of pupils that come from Elmswell = $\frac{1}{4}$ of 100x

$\dfrac{1}{4} \times 100x\\\Rightarrow 25x$

And, number of pupils that come from Haughley= $\frac{3}{5}$ of 100x

$\dfrac{3}{5} \times 100x\\\Rightarrow 60x$

Number of pupils that come from Woolpit = $100x - 25x - 60x \Rightarrow 15x$

As per given statement:

$15x = 102\\\Rightarrow x =6.8$

Number of pupils from Elmswell = 25x = 25 $\times$ 6.8 = 170

Number of pupils from Haughley = 60x = 60 $\times$ 6.8 = 408

Total number of pupils at the school = $100x \Rightarrow 100 \times 6.8=680$

7 0

3 years ago

Use the properties of logarithms to rewrite each expression in an equivalent form containing a single logarithm.

Scrat [10]

Answer:

$\frac{1}{2}\log(16) + \log(3) + \log(\frac{1}{4})$ = log(3)

Step-by-step explanation:

Given equation:

$\frac{1}{2}\log(16) + \log(3) + \log(\frac{1}{4})$

now,

we know the properties of log function as:

1) log(A) + log(B) = log(AB)

2) log(A) - log(B) = $\log(\frac{A}{B})$

3) log(Aᵇ) = b × log(A)

therefore,

using property 3 we get

$\log(16)^{\frac{1}{2}} + \log(3) + \log(\frac{1}{4})$

$\log(4) + \log(3) + \log(\frac{1}{4})$

now,

using the property 2 we get

⇒ log(4) + log(3) + log(1) - log(4)

⇒ log(3) + log(1)

now,

using the property 1, we get

⇒ log(3 × 1)

⇒ log(3)

6 0

4 years ago