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2 years ago

The sum of two numbers is 13 and their diffrence is 3. what are the two numbers?

Mathematics

2 answers:

Musya8 [376]2 years ago

7 0

Answer:

189282

Step-by-step explanation:

DaniilM [7]2 years ago

3 0

Answer: Hello!

The two numbers are 8 and 5 .

Step-by-step explanation:

Mark me brainest please. Hope I helped! Hope you make an 100%

Anna♥

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Answer:

Multiply the first equation by 4.

Step-by-step explanation:

4(x+y=3) which gives

4x+4y=12

and

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We have:

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Height of cone= 8cm

We know the formula to find volume of cone is $\frac{1}{3} r^{2} \pi h$

We need to find the radius of the base of the cone
$535= \frac{\pi r^{2}8} {3}$
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$\frac{4280}{\pi}= r^{2}$
$r= \sqrt{ \frac{4280}{ \pi} }$
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3 years ago

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2 years ago

What is the explict formula for the arithmetic sequence -7.5,-9,-10.5,-12

elena-14-01-66 [18.8K]

Answer:

Step-by-step explanation:

the explicit formula for the arithmetic sequence has the form

x = a + d(n−1)

a is the first term and d is the common difference

The given arithmetic sequence is

-7.5,-9,-10.5,-12

The first term is -7.5

d = common difference = -9 - (-7.5) = -1.5

∴ x = -7.5 - 1.5(n−1)

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3 years ago