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4 years ago

What is 255.89 rounded to 1 significant figure?can anybody help me with the rest?

Mathematics

1 answer:

mixas84 [53]4 years ago

5 0

I can help you with this one because I can't see the paper too well. Sorry. This one would be 256.

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Sati [7]

The first one is 1,3,31,62 and the second answer is 1,5,8

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3 years ago

What equivalent expression was used<br> 3y+4y

Irina18 [472]

Answer:

7y²

Step-by-step explanation:

First u group them like 4+3+y+y=7y²

8 0

3 years ago

Read 2 more answers

2a + b = 3 and a - 3b = 5

vfiekz [6]

Answer:

a= 2 b=-1

Step-by-step explanation:

a-3b=5

or, a= 5+3b_(i)

substituting value of a in 2a+b=3,

2×(5+3b)+b=3

or, 10+6b+b=3

or, 7b=3-10

or, 7b=-7

b= -1

substituting value of b in(i),

a=5+3b

=5+3×(-1)

=5-3

6 0

3 years ago

The shorter leg of a right triangle is 7cm shorter than the longer leg. The hypotenuse is 7cm longer then the linger leg. What i

Gelneren [198K]

The shorter leg is 21cm, longer leg is 28 cm and hypotenuse is 35cm.

Step-by-step explanation:

Let,

The longer leg = x

The shorter leg = x-7

Hypotenuse = x+7

Using Pythagoras theorem;

$a^2+b^2=c^2\\(x-7)^2+(x)^2=(x+7)^2\\x^2-14x+49+x^2=x^2+14x+49\\2x^2-14x+49-x^2-14x-49=0\\x^2-28x=0\\x(x-28)=0\\$

Either,

x= 0

Or,

x-28=0 =>x=28

As length cannot be zero, therefore,

Longer side = 28cm

Shorter side = x-7 = 28-7 = 21cm

Hypotenuse = x+7 = 28+7 = 35cm

The shorter leg is 21cm, longer leg is 28 cm and hypotenuse is 35cm.

Keywords: triangle, pythagoras theorem

Learn more about triangles at:

#LearnwithBrainly

5 0

3 years ago

Jessies's soccer team won 68% of the games they played. If they won 17 games how many did they play

KengaRu [80]

the answer to your equation is 25, because 17 if 68 is 25

4 0

3 years ago