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Ahat [919]
3 years ago
13

Question 3

Mathematics
1 answer:
Wittaler [7]3 years ago
4 0

Answer:

75

Step-by-step explanation:

You might be interested in
Which term of the AP 21, 18, 15 ...... is -81 ?​
amid [387]

Given AP is 21 ,18,15,...

First term = 21

Common difference = 18-21 = -3

Let an = -81

We know that

an = a+(n-1)d

⇛21+(n-1)(-3) = -81

⇛ 21-3n+3 = -81

⇛24-3n = -81

⇛ 24+81 = 3n

⇛ 105= 3n

⇛ n = 105/3

⇛ n = 35

35th term of the AP is -81.

<u>also</u><u> read</u><u> similar</u><u> questions</u><u>:</u> Which term of a AP 5 , 13 , 21 ,... is 181?

brainly.com/question/2406241?referrer

Which term of the AP:3, 8, 13, 18,...,is 78?

brainly.com/question/15380012?referrer

3 0
2 years ago
I need answers for all! thank you will mark brainlist!! please help me i’m begging you &lt;3
Darina [25.2K]

Step-by-step explanation:

y = 2/5 x - 9/5

when x = -1,

the value of y = 2/5(-1) - 9/5

= -2/5 - 9/5 = -11/5

when x = 0

=> y = 2/5(0) -9/5

= 0-9/5 = -9/5

when x=1

=> y = 2/5(1) - 9/5

= 2/5 - 9/5 = 7/5

6 0
2 years ago
Find the surface area of the rectangle prism. 3cm 9cm and 6cm
lisabon 2012 [21]

Answer:

198 cm²

Step-by-step explanation:

We are given the dimensions of a rectangular prism;

3cm 9cm and 6cm

We are required to determine its surface area;

We need to know that;

Surface area of a rectangular prism is given by;

A = 2(WL+HL+WH)

Where L, W and H are length , width and height respectively;

Assuming;

Width is 3 cm

Length is 9 cm, and

Height is 6 cm

Then;

Area = 2 ( (3×9) + (6×9) + (3×6))

        = 2(99)

       = 198 cm²

Therefore, the area of the rectangular prism is 198 cm²

6 0
3 years ago
A) Complete this prime factor tree:
Ierofanga [76]

Answer:

2 * 2 * 3 * 3

Step-by-step explanation:

We are to write the value of 36 as a product of of prime factor

Factorizing 36;

2| 36

2| 18

3| 9

3| 3

| 1

Multiplying out all the factors;

36 = 2 * 2 * 3 * 3

Hence the prime factors of 36 are 2 * 2 * 3 * 3

7 0
2 years ago
Erla has 28 red and blue marbles. The ratio of red to blue marbles is 1:6.How many blue marbles does Erla have?
Anuta_ua [19.1K]
Erla has 24 blue marbles.
6 0
2 years ago
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