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vampirchik [111]
3 years ago
9

20 POINTS! Which of the following equations shows how substitution can be used to solve the following system of equations?

Mathematics
1 answer:
natima [27]3 years ago
5 0

Answer:

Is there a photo or no  

Step-by-step explanation:

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The ratio of boys to girls in a group is 3:1. If there are 52 more boys than girls, work out how many people there are in total.
UkoKoshka [18]

Answer: 104 (Good chance its wrong)

Step-by-step explanation: if the ratio is 3:1 then there's 3 times as much boys as girls. if there are 52 more boys then that means 52 is twice as much as the number of girls so if we divide is by 2 we get 26. if we add 26 with 52 we get 78 and if we divide 78 by 3 we get 26. so I believe there are 26 girls and 78 boys. 26+78=104

I believe 104 is the answer but there's a good chance i'm wrong.

7 0
3 years ago
5(10k+1)+2(2+8k) simplify
iVinArrow [24]
Firstly expand it: 50k + 5 + 4 + 16k
Collect like terms: (50k + 16K) + (5 + 4)
Simplify: 66k + 9.
4 0
3 years ago
Peter takes an 8-inch by 3-inch sheet of paper and cuts from one corner of the paper to the diagonally opposite corner. now pete
tekilochka [14]
First get the length of the side the was cut (Hypotenuse).

We can use Pythagorean theorem: a^2+b^2 = c^2
a = 8, b = 3 = 1.5, c = ?

plug into forumla

8^2 + 3^2 = 73

a=8,
b=1.5,
c = sqrt( 73) or 8.5

Now add all sides together to get perimeter...
8+3+8.5 = 19.5

The perimeter of each sheet is 19.5in.
3 0
3 years ago
Please help me w this lol i dont get it
zaharov [31]

Answer:

i don't get u

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
An equation with an unknown value is shown 13/10 + 2/100= ?/100
lora16 [44]

Answer:

132/100, or 1.32

Step-by-step explanation:

Just change 13/10 to 130/100 and add 2/100 to make it 132/100, or 1.32 :)

4 0
3 years ago
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