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4 years ago

9

What is an estimation strategy This is for 6th grade math please help

1 answer:

Lunna [17]4 years ago

8 0

Answer:

Estimation is a mental process of coming up with an answer that is relatively close, to allow decisions to be made. The types of estimation are quantity, computation and measurement.

An estimation strategy is simply coming up with a good estimate based on evidence and already known facts. Coming to a conclusion as close to the real answer as you can. It can also be called an educated guess.

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Three times a number t minus twelve equals forty

tekilochka [14]

3 · t - 12 = 40

3t - 12 = 40 |add 12 to both sides

3t = 52 |divide both sides by 3

t = 52/3

t = 17 1/3

5 0

4 years ago

24 POINTS!!!!!!

nika2105 [10]

5x - 2 equivalent to to 2x−2+3x

answer is B. 2x−2+3x

7 0

3 years ago

Please help me! DO NOT SEND LINK!

svet-max [94.6K]

Answer:

<u>So option 4; </u> $\frac{35}{100}$ <u> is the correct option</u>

Step-by-step explanation:

First, we need to convert $\frac{2}{10}$ so it's denominator is 100. To do so, we will multiply the numerator and denominator by 10

$\frac{2}{10} *\frac{10}{10} = \frac{20}{100}$

Second, we need to add the two fractions to get the current total distance walked. Remember, when adding fractions, the denominator does not change.

$\frac{45}{100} + \frac{20}{100} = \frac{65}{100}$

Now that we have the total distance walked, we need to subtract that to 1 mile. $1mile=\frac{1}{1} = \frac{10}{10} =\frac{100}{100}$

$\frac{100}{100} -\frac{65}{100} = \frac{35}{100}$

So option 4; $\frac{35}{100}$ is the correct option

6 0

3 years ago

which expression represents purely real numbers and which expression represents non-real complex number?

Lyrx [107]

Answer:

Step-by-step explanation:

Complex numbers are the numbers represented by the expression = a + bi

Here a = real part of the number

bi = imaginary part

a and b are the real numbers.

$i^9=(i^2)^4.(i)$

$=(-1)^{4}.i$ [Since, $i^2=-1$ ]

$=i$

Therefore, its a non real complex number.

2 - $\sqrt{-49}$ = $2-\sqrt{(-1)(7)^2}$

= $2-7\sqrt{-1}$

= $2-7i$

This number is a Non real complex number.

$\sqrt{(-18)^2}=18\sqrt{-1}$

= 18i

It's a non real complex number.

3 + 2i

It's a non real complex number.

-289

It's a purely real number.

$4-32i^2=4-32(-1)$

= 4 + 32

= 36

It's a purely real number.

6 0

3 years ago

Which is the zero of the function f(x)=(x+3) (2x-1)(x+2) ?

Scrat [10]

Answer:

x= -3 x = 1/2 x=-2

Step-by-step explanation:

f(x)=(x+3) (2x-1)(x+2)

Set equal to zero

0 =(x+3) (2x-1)(x+2)

Using the zero product property

x+3 =0 2x-1 =0 x+2 =0

x= -3 2x =1 x = -2

x= -3 x = 1/2 x=-2

6 0

3 years ago