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2 years ago

13

During an experiment, the temperature of a mixture changes from 12 °F to 153 °F.

1 answer:

shtirl [24]2 years ago

8 0

Answer:26.44%

Step-by-step explanation:

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Please can someone help me work out the missing length

Otrada [13]

Vol=area x Height

length= 3
breadth= X
Height = 2

area must = half of 42 because to get the volume of 42cm cubed, you had to times the area by 2 so

42 devided by 2 is 21 so to find the length you myst do 21 devided by 3 which is 7

so the missing length is 7cm

8 0

3 years ago

The third term of an arithmetic sequence is 15 and when 20 is added to the third term the

djyliett [7]

Answer:

Common difference = 4

Position of 103 = 25th term

Step-by-step explanation:

a)

According to the given information:

$a_3 + 20 = a_8$

$a+ (3-1)d + 20 = a+ (8-1)d$

$\cancel a+ 2d + 20 = \cancel a + 7d$

$2d + 20 = 7d$

$20 = 7d-2d$

$20 = 5d$

$d = \frac{20}{5}$

$\purple {\bold {d = 4}}$

Common difference = 4

b)

$\because a_3 = 15....(given)$

$\therefore a + (3-1)d = 15$

$\therefore a + 2d = 15$

$\therefore a + 2\times 4= 15$

$\therefore a + 8= 15$

$\therefore a = 15-8$

$\red{\bold {\therefore a = 7}}$

$\because a_n = a + (n - 1) d$

$\therefore 103 = 7 + (n - 1)4$

$\therefore 103 - 7 = (n - 1)4$

$\therefore 96 = (n - 1)4$

$\therefore \frac{96}{4}= n - 1$

$\therefore 24= n - 1$

$\therefore 24+1= n$

$\blue{\bold {\therefore n = 25}}$

So, the position of 103 in this sequence is 25th term.

8 0

3 years ago

200÷10+50×100=______

yan [13]

Answer:

5020

Step-by-step explanation:

is it correct?

4 0

3 years ago

Read 2 more answers

What is the answer to 5=z−4−3.

MArishka [77]

5=z−4−3

5=z-7

move -7 to the other side

sign changes from -7 to +7

5+7=z-7+7

5+7=z

Answer: z=12

8 0

4 years ago

I am thinking of a number.

mash [69]

Answer:

$21$

Step-by-step explanation:

Let $x$ be that number.

$12x-216=2x-6$

$12x-2x=-6+216$

$10x=210$

$10x/10=210/10$

$x=21$

21 is the number.

8 0

3 years ago

Read 2 more answers