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slava [35]
3 years ago
9

Toby is n years old and Adrian is d years younger than Toby. Write down a formula for S where S years is the sum of their ages.

Mathematics
2 answers:
Airida [17]3 years ago
7 0

I don’t see any of the problems so I’m guessing you would have to rewrite it
RSB [31]3 years ago
7 0

Answer:

n-d=s

Step-by-step explanation:

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Find the radius of a sphere with a volume of 26, 2440 cubic inches
ehidna [41]

Answer:

8.7304 x 1010

Step-by-step explanation:

I think its that >_<

The last 10 is supposed to be on top to the right of the 10

4 0
3 years ago
Convert 25 miles into kilometres
Airida [17]

Answer:

1 miles= 1.609km

so, 25x1.609 = 40.225km

3 0
2 years ago
There are 9 people that have a conversation with each other exactly one time.
Sedbober [7]

The question is an illustration of arithmetic sequence.

<em>The number of conversation for 19 people is 171</em>

<u />

<u>(a) 9 people</u>

Total = \frac{9 \times 8}{2}

9 represents the number of people

8 represents the number of conversation each person had

2 represents the number of people having a conversation at once (i.e 2 people at once)

<u>(b) 19 people</u>

We have:

n = 19

The number of conversation is:

Total = \frac{n \times (n -1)}{2}

So, we have:

Total = \frac{19 \times (19 -1)}{2}

Total = \frac{19 \times 18}{2}

Total = 19 \times 9

Total = 171

Hence, the number of conversation for 19 people is 171

Read more about arithmetic sequence at:

brainly.com/question/18109692

5 0
2 years ago
Evaluate the expression when x= -5.2 and y = –6.8.<br> 4x-7y
vfiekz [6]

Step-by-step explanation:

Substitute variables with given values

Minus sign becomes plus sign if a negative is multiplied by a negative or a negative is put next to a negative number.

4x-7y=4(-5.2)-7(-6.8)

-20.8+47.6=26.8

7 0
2 years ago
How many quarts are in 40 gallons
Dafna11 [192]
To find out how many quarts there are in 40 gallons, we simply need to know how many quarts there are in one gallon. As the name implies, there are 4 quarts in one gallon, so we simply need to multiply 4 * 40 to find the amount of quarts in 40 gallons.

4 * 40 = 160

There are 160 quarts in 40 gallons.
Hope that helped! =)
7 0
3 years ago
Read 2 more answers
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