All categories

3 years ago

8x(3x2-8)+10 what does his mean?

Mathematics

2 answers:

maria [59]3 years ago

6 0

$8\times(3\times2-8)+10 \\ =8\times(6-8)+10 \\ =8\times(-2)+10 \\ =-16+10 \\ =-6$

choli [55]3 years ago

5 0

$8*(3*2-8)+10= \\\\ =8*(6-8)+10= \\\\ = 8*(-2)+10= \\\\ =-16+10= \\\\ =\boxed{-6}$

You might be interested in

Which one of these numbers could form a triangle?

padilas [110]

Answer: non of those numbers

Step-by-step explanation:

all the numbers couldn't form a triangle

7 0

2 years ago

What the number is ؟

zubka84 [21]

Answer:

A number is a mathematical object used to count, measure and also label. The original examples are the natural numbers 1, 2, 3, 4 and so forth. A notational symbol that represents a number is called a numeral.

5 0

3 years ago

Rewrite x2 − 6x + 7 = 0 in the form (x − a)2 = b, where a and b are integers, to determine the a and b values.

Setler79 [48]

Answer:

Therefore values of a and b are

$a=3\ and\ b = 2$

Step-by-step explanation:

Rewrite $x^{2}-6x+7=0$ in the form

$(x-a)^{2}=b$

where a and b are integers,

To Find:

a = ?

b = ?

Solution:

$x^{2}-6x+7=0$ ..............Given

Which can be written as

$x^{2}-6x=-7$

$(\frac{1}{2} coefficient\ of\ x)^{2}=(\frac{1}{2}\times -6)^{2}=9$

Adding half coefficient of X square on both the side we get

$x^{2}-6x+9=-7+9=2$ ...................( 1 )

By identity we have (A - B)² =A² - 2AB + B²

Therefore,

$x^{2}-6x+9=x^{2}-2\times 3\times x+3^{2}=(x-3)^{2}$

Substituting in equation 1 we get

$(x-3)^{2}=2$

Which is in the form of

$(x-a)^{2}=b$

On comparing we get

a = 3 and b = 2

Therefore values of a and b are

$a=3\ and\ b = 2$

4 0

3 years ago

Which expression is equivalent to...

torisob [31]

Answer:

$x^{\frac{2}{7} } y^{-\frac{3}{5} } \\$ i.e answer A.

Step-by-step explanation:

This question involves knowing the following power/exponent rule:

$\sqrt[n]{x^m} = x^\frac{m}{n} \\\\so \sqrt[7]{x^2} = x^\frac{2}{7} \\\\and \\\\ \sqrt[5]{y^3} = y^\frac{3}{5} \\$

Next, when a power is on the bottom of a fraction, if we want to move it to the top, this makes the power become negative.

so the y-term, when moved to the top of the fraction, becomes:

$y^{-\frac{3}{5} } \\$

So the answer is: $x^{\frac{2}{7} } y^{-\frac{3}{5} } \\$

7 0

2 years ago

If 40% of a number is 56, what was the original number?

oksian1 [2.3K]

40/100= 56/x 40x=100(56) 40x=5600 Divide both sides by 40 to get x alone. X=140

7 0

2 years ago

Read 2 more answers