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2 years ago

What would be the first step to solve for n in the equation 3n-7=30?

Mathematics

2 answers:

taurus [48]2 years ago

4 0

The first step would be to add 7 to both sides.
3n-7=30
add 7
3n=37
divide by 3
n=12.33

olya-2409 [2.1K]2 years ago

3 0

Answer:

n = 37/3

Step-by-step explanation:

3n = 30 +7

3n = 37

n = 37/3

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It took 2 electricians 5 days to wire a house. How long would it take 10 electricians?

vova2212 [387]

Answer:

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Step-by-step explanation:

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3 years ago

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Work out the volume of the prism (answer in 1 decimal place)

Artyom0805 [142]

Answer:

Volume of the Prism = $204 cm^3$

Step-by-step explanation:

Volume of the right triangular prism= $\frac{1}{2}*Length*Width*Height$

Length=8.5 cm

Width= 6 cm

Height= 8 cm

Putting the values in the formula:

Volume of the prism :

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3 years ago

A political gathering in South America was attended by 7,910 people. Each of South America’s 14 countries was equally represente

zheka24 [161]

Answer:

565

Step-by-step explanation:

You would divide the number of people (7910) by the number of countries attending (14).

7910÷14=565

3 0

3 years ago

Find the tenth term of the geometric sequence, given the first term and common ratio.

Natalija [7]

Answer:

$a_{10}=\dfrac{1}{128}$

Step-by-step explanation:

In the geometric series:

$a_1=4\\ \\r=\dfrac{1}{2}$

The nth term of the geometric sequence can be calculated using formula

$a_n=a_1\cdot r^{n-1}$

In your case, n = 10, then

$a_{10}\\ \\=4\cdot \left(\dfrac{1}{2}\right)^{10-1}\\ \\=4\cdot \left(\dfrac{1}{2}\right)^9\\ \\=2^2\cdot \dfrac{1}{2^9}\\ \\=\dfrac{1}{2^{9-2}}\\ \\=\dfrac{1}{2^7}\\ \\=\dfrac{1}{128}$

8 0

2 years ago

Need this answered please!!

Paraphin [41]

Their 3 angles are equal (64,26,90)

Hope this will help...

Please mark as brainliest

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2 years ago