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3 years ago

10

CONVERT 11/30 into a repeating decimal. please show each step please.

2 answers:

Scrat [10]3 years ago

8 0

Answer:

0.36666 etc

Step-by-step explanation:

11/30

Natalija [7]3 years ago

8 0

Answer:

0.36666 etc

Step-by-step explanation:

hope it helps

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Show that the sum of the first 2n natural numbers is n(2n+1)

Leokris [45]

Answer:

This sum is the sum of an arithmetic sequence. There is a formula for the sum of an arithmetic sequence which can be looked up or derived by a variety of means.

A nice approach for this sequence is the following. Notice that the sum of first and last number in the sequence is the same as the sum of the second and second last, and also the same as the sum of the third and third last, and so on.

There are n of these pairs. So the desired sum is n x (first number + last number). But the first number is 1 and the last on is 2n. Thus the desired sum is n(1 + 2n).

Hope this helps!!

Mark Brainleast!!!!!!!!!!!

7 0

2 years ago

Read 2 more answers

!!!! I need help with numbers 1 and 9 please !!!!!

Nataly_w [17]

(1)

given $\frac{j}{6}$ = $\frac{9}{10}$ ( cross- multiply )

10j = 54 ( divide both sides by 10 )

j = $\frac{54}{10}$ = $\frac{27}{5}$ ← in simplest form

(9)

let h be the hours worked daily , then

3h = 20 $\frac{2}{3}$ = $\frac{62}{3}$ ( divide both sides by 3 )

h = $\frac{62}{3}$ ÷ 3

= $\frac{62}{3}$ × $\frac{1}{3}$ = $\frac{62}{9}$ = 6 $\frac{8}{9}$

She worked 6 $\frac{8}{9}$ hours each day

5 0

3 years ago

Work out 12+8÷(9-5) 0.018÷0.06 Express as single fraction 5/7÷2/5

Anettt [7]

Step-by-step explanation:

I don't know if the first set of numbers is all in one set, but I'll do my best to give you an answer.

Really all you need to do is use PEMDAS for the first question.

(Parentheses, exponents, multiply, divide, add, subtract. In that order)

$1 2 + 8 \div (9 - 5) \\ 12 + 8 \div 4 \\ 12 + 2 \\ 14$

Then to simplify that fraction next to it, notice that 0.018 is 3x 0.06.

that's a 3:1 ratio, so it ends up simplifying to this:

$\frac{3}{1}$

Lastly, to solve the division of that fraction. If you divide by a fraction, you multiply whatever it's dividing by its inverse.

So...

$\frac{5}{7} \div \frac{2}{5} \\ \frac{5}{7} \times \frac{5}{2} \\ \frac{25}{14}$

7 0

4 years ago

How to solve 4(2x-7)-2×=-10 step by step

KATRIN_1 [288]

Answer: x=3

Step-by-step explanation:

4(2x-7)-2x=-10

Multiply 4 with 2x and -7

8x-28-2x=-10

Add like terms which are 8x and -2x

6x-28=-10

Add 28 to both sides so the -28 cancels out

6x=18

Divide both sides by 6 to isolate the x

Answer= x=3

6 0

3 years ago

Match the base to the corresponding height.<br> Base (b)<br> Height (h)

Leona [35]

Answer:

See attachment

Step-by-step explanation:

<em>Remember: height is always perpendicular to the base</em>

<em>See attached for answer</em>

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3 0

3 years ago