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4 years ago

Estimate 815-281 to get the answer

Mathematics

2 answers:

Jet001 [13]4 years ago

7 0

Answer:

The estimated answer is 780.

Step-by-step explanation:

Given : Expression $815-28$

To find : Estimate the expression ?

Solution :

Estimation is to approximate the number to its nearest value for making calculation easier.

Estimate 815 as 810.

Estimate 28 as 30.

So, Substituting these values

$810-30=780$

Therefore, The estimated answer is 780.

Damm [24]4 years ago

4 0

Answer:800-300

Step-by-step explanation:

since there is a 1 after the 8 it would go down to 800 and there is a 8 after the 2 so it would go up to 300

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Solve the following equation for x. x = -2 x = 2 x = -17 x = -7 (x - 5)/2 = -6

nordsb [41]

Step-by-step explanation:

x= -2,

(x - 5) / 2= -6

( (-2) - 5) / 2= -6

(-7) / 2 = -6

-3.5 = - 6

right hand side not equal to left hand side of this equation.so,x= -2 cannot exist for this equation.

x=2,

(x - 5) / 2= -6

(2 - 5) / 2= -6

(-3) / 2= -6

-1.5 = - 6

right hand side not equal to left hand side of this equation.so,x= 2 cannot exist for this equation.

x= -17

(x - 5) / 2= -6

( ( -17) - 5) / 2= -6

(- 22) / 2= -6

-11 = -6

right hand side not equal to left hand side of this equation.so,x= -17 cannot exist for this equation.

x= -7,

(x - 5) / 2= -6

( ( -7) -5) / 2= -6

(-12) / 2= -6

-6= -6

right hand side equal to left hand side of this equation.so,x= -7 exist for this equation.

8 0

3 years ago

65 432m vuông = .........ha

aleksklad [387]

Answer:

Step-by-step explanation:

they won't understand bạn hỏi trên hoidap247 đúng không :)

3 0

2 years ago

Take a factor out of the square root:

Nat2105 [25]

Answer:

See below.

Step-by-step explanation:

Lets take √72:

Factoring 72 to find perfect squares:

72 = 2*2*2*3*3

The largest perfect square in the above = 2*2*3*3 = 36.

So we can write 72 as 36*2.

√72 = √(36 * 2)

√36 * √2

= 6√2.

One more example:

√18 = √(2*3*3)

= √9*√2

= 3√2.

6 0

3 years ago

A game-show spinner has these odds of stopping on particular dollar values: 40% for $5, 25% for $100, 20% for $500, and 15% for

Yakvenalex [24]

Answer:

13÷ 23

Step-by-step explanation:

The computation of the odds of player winning is shown below;

For $5 it is 40%

And, for $100 it is 25%

so for total it is

= 40% + 25%

= 65%

And, the total percentage is 100%

So, the odds in favor is

65:100

13:20

Now for winning it would be 13÷ 23

5 0

3 years ago

Which regular polygon has a minimum rotation of 45 degrees to carry the polygon onto itself?

lubasha [3.4K]

Answer:

Hence, a regular polygon that has a minimum rotation of 45 degrees to carry the polygon onto itself is:

A. octagon.

Step-by-step explanation:

We know that the for a regular polygon with 'n' sides the minimum rotation that can carry the polygon onto itself is:

$\dfrac{360\degree}{n}$

Here we are given the minimum angle of rotation such that polygon is transformed to itself as 45 degree.

i.e. we have:

$\dfrac{360}{n}=45\\\\n=\dfrac{360}{45}\\\\n=8$

Hence, the number of sides of a polygon are 8.

Hence, the polygon is:

A. octagon.

( Since a polygon with 8 sides is called a octagon)

7 0

3 years ago

Read 2 more answers