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Novay_Z [31]
3 years ago
9

Help me please i don't understand ​

Mathematics
1 answer:
lubasha [3.4K]3 years ago
7 0

Answer:

See below.

Step-by-step explanation:

Variables:

L = length

W = width

P = perimeter

Equations:

L = W + 13

P = 2(L + W)

P = 2(W + 13 + W)

2(W + 13 + W) = 226

2(2W + 13) = 226

2W + 13 = 113

2W = 100

W = 50

L = W + 13 = 50 + 13 = 63

The length is 63 cm, and the width is 50 cm.

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Which value is the solution to the equation 20=y+12 ? ( use substitution to find solutions to equations.)
amm1812

Answer:

8 = y

Step-by-step explanation:

In order to find a solution to an algebraic equation such as this one we simply need to isolate the variable. We do this by applying the opposite operation to each side in order to get rid of the other factors and get the variable alone. Like so...

20 = y + 12   ... we need to subtract 12 from both sides to get rid of the 12 on the right side with the variable y.

20 - 12 = y + 12 - 12

8 = y

Finally, we can see that the value of the variable y is 8

8 0
3 years ago
1
Valentin [98]

Answer 20 are left

Step-by-step explanation:

6 0
3 years ago
Factoring , <br> a² +4a - 5
givi [52]

the factors of the term a^2+4a-5 are (a-1)(a+5)

Step-by-step explanation:

We need to find factors of the term: a^2+4a-5

For finding factors:

We need to break the middle term such that their product is equal to product of first and last term and their sum is equal to middle term

Breaking the middle term and finding factors:

a^2+4a-5

=a^2+5a-a-5

=a(a+5)-1(a+5)

=(a-1)(a+5)

So, the factors of the term a^2+4a-5 are (a-1)(a+5)

Keywords: Finding factors

Learn more about finding factors at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

6 0
3 years ago
it was found that out of 45 girls,10 joined singing but not dancing and 24 joined singing.How many joined both. options: A: 21 B
katrin [286]

Answer:

answer is 24

out of 45,

24+10=singing

only 24=dancing

so 24 girls joined both

3 0
3 years ago
Explain how you can use model to find 6x17
Karo-lina-s [1.5K]
You can use lattice multiplication or long multiplication. for examples and/or visuals message me.
8 0
4 years ago
Read 2 more answers
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