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3 years ago

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Which expressions are equivalent? Select Equivalent or Not equivalent for each pair of expressions. 3(a−b) and 3a−3b 2a(2+b) and

4ab

2 answers:

Lapatulllka [165]3 years ago

5 0

The first one is <span>Equivalent and the second is nonequivalent</span>

zysi [14]3 years ago

5 0

i just took the test, the first one is equivalent and the second one is not.

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Joe, working alone, takes 8 hours to mow a lawn. Sally, working alone, can mow the same lawn in 6 hours. How long does it take t

tamaranim1 [39]

Answer: 3 3/7 hours

Step-by-step explanation:

you need to find out how much work they can do in an hour.

let x represent the total collaborative work

1/8 + 1/6 = 1/x

3/24 + 4/24 = 1/x

7x = 24

x = 24/7 or 3 3/7 hours (in decimal form this is 3.4286)

I cannot guarantee this is correct but hope it helped

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3 years ago

Narelle is environmentally consclous and has fitted

LUCKY_DIMON [66]

Answer:

93.5 mm

Step-by-step explanation:

1. Add all the rainfall readings together to find the total rainfall.

12.48+8.82+27.51+44.73=93.54

2. One decimal place means you'll be rounding 93.54 to the nearest tenth. Round down if the decimal place immediately to the right is less than 5, round up if it is greater than or equal to 5. Since 4 is the value in the hundredths place and 4<5, we are going to round down.

3. The answer is 93.5 mm, don't forget your units.

Hope you found this helpful, have a nice day.

7 0

4 years ago

Read 2 more answers

Find the sum of the first six terms of the sequence.<br><br><br> S6 = ⇒ 84

k0ka [10]

Answer:

Explained below.

Step-by-step explanation:

Consider the series is a set of first 6 natural numbers.

Sum of first <em>n</em> terms is:

$\text{Sum of n terms}=\frac{n(n+1)}{2}$

$\text{Sum of first 6 terms}=\frac{6(6+1)}{2}$

$=3\times7\\=21$

Consider the series is an arithmetic sequence.

Sum of first <em>n</em> terms is:

$S_{n}=\frac{n}{2} [2a+(n-1)d]$

Here<em>,</em>

<em>a</em> = first term

<em>d</em> = common difference

Consider the series is an geometric sequence.

Sum of first <em>n</em> terms is:

$S_{n}=\frac{a_{1}\cdot(1-r^{n})}{(1-r)}$

Here<em>,</em>

<em>a₁</em> = first term

<em>r</em> = common ratio

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3 years ago

3.2 as a fraction or mixed number in simplest form.

xxTIMURxx [149]

Answer:

3 1/5 is 3.2 as a mixed number

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3 years ago

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What is Australia constitution

Daniel [21]

Answer :

The Australian Constitution is the set of rules by which Australia is run. It came into effect on 1 January 1901. This fact sheet summarises the key features of the Constitution and how it can be changed. Commonwealth of Australia Constitution Act, 1900: Original Public Record Copy (1900).

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2 years ago