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MAXImum [283]
3 years ago
7

What is the21st term of -3,2,7​

Mathematics
2 answers:
Alisiya [41]3 years ago
8 0
Arithmetic sequence formula
an=a1+d(n-1)
-3+5(n-1)
-3+5n-5
5n-8
a21=5(21)-8
a21=97
Fed [463]3 years ago
4 0

Answer:

102

Step-by-step explanation:

The first step is to find out how to find the next number in the term.

In this we can see that to get to the next number in the term we need to add 5.

The easiest way to figure out the 21st term of this, would be to multiply 5×21. This is equal to 105.

But since we started at three less than 5, we need to subtract 3 from 105. 105-3=102.

The 21st term is 102.

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The diamond is 1 the square is 6 and the triangle is 7
7 0
3 years ago
Factor completely.<br><br> x2+7x−18<br><br><br> Answer now PLZZZZZ
zimovet [89]

Answer: ( − 2) ( + 9)

4 0
3 years ago
Negative exponents 3-3 x 3-2
patriot [66]

Answer:

3^-5

Step-by-step explanation:

Whenever you multiply exponents, you add the values. Negative two plus negative three results in an answer of negative five. This will be the power. You will end up with 3^-5 as your answer.

4 0
3 years ago
I need help with this math please​
Alexus [3.1K]

In order to solve using elimination, we need to be able to get rid of one variable, so that we can solve for the other. We need to subtract these two equations given from one another, or multiply the bottom equation by a negative and add them together.

(-5x + 6y = 8) - (-5x + 4y = 2)

(-5x + 6y = 8) + (5x - 4y = -2)

0x + 2y = 6

2y = 6

y = 3

Now that we know the value of one variable, we can take that value and plug it back into one of the original equations and solve for the value of the other variable.

-5x + 6y = 8

-5x + 6(3) = 8

-5x + 18 = 8

-5x = -10

x = 2

The solution to this system of equations is (2, 3).

Hope this helps!! :)

5 0
3 years ago
Read 2 more answers
An object has a mass of 235 g and a volume of 655 cm? What is its density?
LenKa [72]

Answer:

the answer is 235/655= 0.358778

5 0
3 years ago
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