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3 years ago

Guys i need help with this ... please

Mathematics

1 answer:

Kisachek [45]3 years ago

5 0

They r irrational lol

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The length of a rectangular piece of steel in a bridge is 3 meters less than double the width. The perimeter of the piece of ste

pshichka [43]

Length = 2×width -3
or
L = 2w - 3

perimeter = 24 meters
or
p = 24m

p = 2L + 2w
or
24 = 2(2w-3) + 2w ( Remember L = 2w +3)

24 = 4w -6 +2w
24 = 6w + 6
24 - 6 = 6w
18 = 6w
18/6 = w
3 = w

Now that we know ,w, we can find L.

p = 2L + 2w
24 = 2L +2(3)
24 = 2L + 6
24 -6 = 2L
18 = 2L
18/2 = L
9 = L

Now, we can check if the answer makes sense.

p = 2L + 2w
24 = 2(9) + 2(3) (L = 9 & w =3 )
24 = 18 + 6
24 = 24

the answer checks!

3 0

4 years ago

I need the answer for this Algebra problem. 9(x+10)=9(x)+9(10)

qaws [65]

Answer: identity (since the equation equal itself, there are infinity solutions)

9(x + 10) = 9(x) + 9(10)
9x + 90 = 9x + 90

4 0

3 years ago

Read 2 more answers

Plzzzzzzzzz guysssss im failinggggg

goblinko [34]

Step-by-step explanation:

a) Given, 

Total marks in English = 90

Marks scored by James = 60

Therefore, 

Percentage of marks scored

$= \frac{60}{90} \times 100$

= 66.67% (approx. )

Then,

Total marks in Science = 150

Marks scored by James = 78

Therefore, 

Percentage of marks scored

$= \frac{78}{150} \times 100$

= 52%

At last,

Total marks in Maths = 120

Marks scored by James = 75

Therefore, 

Percentage of marks scored

$= \frac{75}{120} \times 100$

= 62.50%

b) In English test  James scored highest percentage.

6 0

3 years ago

2. Which of the following ratios is equivalent to 12/20 ?

Orlov [11]

I think the answer is 3/5 if you simplify

6 0

3 years ago

Consider the line y =

IRISSAK [1]

Answer:

not sure

Step-by-step explanation:

....... osrry.

6 0

3 years ago