3 years ago

2. Here is an inequality on a number line.

Mathematics

1 answer:

mars1129 [50]3 years ago

4 0

Answer:

I think the answer might be the second one or the third one

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What are the steps to solve 650÷2/3

PIT_PIT [208]

Answer:

975

Step-by-step explanation:

650/(2/3)=650(3/2)=325(3)=975

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3 years ago

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2. Find the 20th term of an arithmetic sequence if its 6th term is 14 and 14th term is 6.

Fudgin [204]

Answer:

$\sf t_{20}= 0$

Step-by-step explanation:

<h3>Arithmetic sequence:</h3>

$\sf \boxed{\bf n^{th} \ term = a + (n-1)d}\\\\\text{Here, a is the first term ; d is the common difference }$

6th term is 14 ⇒ $\sf t_6 = 14$

a + (6 - 1)d = 14

a + 5d = 14 --------------(I)

14th term is 6 ⇒ $\sf t_{14} = 6$

a + (14-1)d = 6

a + 13d = 6 ----------------(II)

Subtract equation (II) from equation(I)

(I) a + 5d = 14

(II) a + 13d = 6

-8d = 8

d = 8 ÷(-8)

$\sf \boxed{\bf d= (-1)}$

Plugin d = -1 in equation (I)

a + 5(-1) = 14

a -5 = 14

a = 14 + 5

$\sf \boxed{\bf a = 19}$

20th term:

$\sf t_{20}= 19 + 19*(-1)$

= 19 - 19

$\sf \boxed{\bf t_{20} = 0}$

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2 years ago

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5 If 15 cookies cost $8.50, how much would it cost for 25 cookies? Write a proportion and solve it below:

AlladinOne [14]

Answer:

14.25

Step-by-step explanation:

8.5/15=0.57

1:0.57

0.57*25=14.25

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What is negative 8 plus 8

jenyasd209 [6]

Answer:

Step-by-step explanation:

-8+8=0

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What is 3r³/2r<br>how do I go about solving it <br>thanks

natulia [17]

Answer:

3r^2 /2

Step-by-step explanation:

r^3 cancels out r in the denominator remaining with r^2 in the numerator.

so 3r^2/2

= 3r^2 /2

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