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3 years ago

Without performing division, determine if the integer 890967 is divisible by 9

1 answer:

4 0

A number is divisible by 9<span> if the sum of its digits is </span><span>divisible by 9

here the sum 39 not divisible by 9 </span>

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A gopher lives in an underground burrow. It starts at a certain point, p, underground and digs straight down to triple its dista

saw5 [17]

Answer:

<-2

Step-by-step explanation:

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2 years ago

What is the slope of a line that is perpendicular to the line whose equation is 2x + y = 4

wel

The slope of the line of the equation given is -2 (by solving for y, you get y = -2x+4).

So, in order to be perpendicular, you must take the negative reciprocal.

The slope would be -1/2.

6 0

3 years ago

Read 2 more answers

Through: (-5, -3), perp. to y=-9/4x-5

Mrrafil [7]

Given:

A line passes through (-5,-3) and perpendicular to $y=-\dfrac{9}{4}x-5$ .

To find:

The equation of the line.

Solution:

We have,

$y=-\dfrac{9}{4}x-5$

On comparing this equation with slope intercept form, i.e., $y=mx+b$ , we get

$m_2=-\dfrac{9}{4}$

It means, slope of this line is $-\dfrac{9}{4}$ .

Product of slopes of two perpendicular lines is always -1.

$m_1\times m_2=-1$

$m_1 \times \left(-\dfrac{9}{4}\right)=-1$

$m_1=\dfrac{4}{9}$

Slope of required line is $\dfrac{4}{9}$ and it passes through the point (-5,-3). So, the equation of the line is

$y-y_1=m(x-x_1)$

where, m is slope.

$y-(-3)=\dfrac{4}{9}(x-(-5))$

$y+3=\dfrac{4}{9}(x+5)$

$9(y+3)=4(x+5)$

$9y+27=4x+20$

$27-20=4x-9y$

$7=4x-9y$

Therefore, the equation of required line is $4x-9y=7$ .

8 0

3 years ago

Please I need the answer PLEASEEEEEEEEEEEEEEEEEE!

Ilya [14]

Answer: The first one

Step-by-step explanation:

3 0

3 years ago

How is this answer D?

kompoz [17]

It's a equilateral triangle with each side being equal to the radius.

So the area is $\dfrac{8^2\sqrt 3}{4}=\dfrac{64\sqrt3}{4}=16\sqrt3$

7 0

3 years ago