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Levart [38]
2 years ago
13

PLS PLS PLS HELP!!!

Mathematics
1 answer:
KiRa [710]2 years ago
5 0

Answer:

( we know that square of perimeter is 4L now,4L=6c-4(c-5),4L=6c-4c+20,4L=2c+20,then L=(c+10)/2

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What everyday life situation might each of these questions describe?
vitfil [10]

Answer:

I will do A for U

I have 5 apples then got 18 more, so how many apples do I now Have?

Step-by-step explanation:

4 0
2 years ago
Sail with the equation by completing the square x^2+8x=-3
maxonik [38]

Answer:

The solutions are x=-4(+/-)\sqrt{13}

Step-by-step explanation:

we have

x^{2} +8x=-3

Complete the square. Remember to balance the equation by adding the same constants to each side

x^{2} +8x+16=-3+16

x^{2} +8x+16=13

Rewrite as perfect squares

(x+4)^{2}=13

square root both sides

x+4=(+/-)\sqrt{13}

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5 0
3 years ago
A knife is three times the cost of a spoon. 9 spoons and 12 knifes cost ?82.80 workout the cost of 1 knife.
tankabanditka [31]

Let S = spoon

Let K = knife


1 knife is thee times the cost of a spoon, so it would be 3S

Now you have 9S + 12K = 82.80

We can replace the K with 3S:

9S +12(3S) = 82.80

Simplify the left side:

9S + 36S = 82.80

Add:

45S = 82.80

Divide both sides by 45"

S = 82.80 / 45

S = 1.84

One spoon cost $1.84


We know one knife cost 3 times as much, so multiply the cost of a spoon by 3:

Knife = 1.84 x 3 = $5.52

7 0
3 years ago
Read 2 more answers
Hey I’m having trouble finding out how to divide fractions
solniwko [45]

The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. Finally, simplify the fractions if needed.

5 0
2 years ago
What is 15% of ____ is 27
serious [3.7K]

Answer:

it's 180

15% of 180 is 27

hope it helps :)

3 0
3 years ago
Read 2 more answers
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