All categories

3 years ago

What is the estimation of 17.9 ÷ 9?

1 answer:

5 0

You can estimate it by 18 divided by 9, because 17.9 is so close to 18, you don't really need to change the 9 to 10 bc 18 can be divided by 9 which the answer is 2.

You might be interested in

Determine the quadrant(s) in which (x,y) is located so that the condition(s) is (are) satisfied.

Alex777 [14]

Quadrant 4 is the correct answer, and it's the only

7 0

3 years ago

Find all solutions of each equation on the interval 0 ≤ x<2π.

Aleksandr [31]

Answer:

$x = 0 \: or \:x = \pi$

Step-by-step explanation:

The given equation is

$\tan^{2} (x) \sec^{2} (x) + \sec^{2} (x) - \tan^{2} (x) = 2$

Subtract 2 from both sides and factor by grouping to get:

$\sec^{2} (x)(\tan^{2} (x) + 2) -1( \tan^{2} (x) + 2)$

$(\tan^{2} (x) + 2) (\sec^{2} (x) - 1) = 0$

By the zero product principle:

$(\tan^{2} (x) + 2) = 0 \: or \: (\sec^{2} (x) - 1) = 0$

$(\tan^{2} (x) = - 2 \: or \: \sec^{2} (x) = 1$

When

$\sec^{2} (x) = 1 \implies\cos^{2} (x) = 1$

$\implies \: \cos(x) = \pm1$

This implies

$x = 0 \: or \:x = \pi$

When

${ \tan }^{2} (x) = - 2$

We have

$\tan(x) = \pm \sqrt{ - 2}$

hence x is not defined for all real numbers

6 0

3 years ago

Read 2 more answers

What’s the answer to 9 and 10???

Zigmanuir [339]

Answer:

9. C. division

10. D. addition

Step-by-step explanation:

When solving for X the goal is to get it all by itself on one side of the equation and to do that you have to undo the operations already in effect on it. In number 9 the x is multiplied by 3 so to undo that you would need to divide by 3 and that would cancel out leaving the x by itself. Then you would need to divide by 3 on the other side of the equation also to keep it balenced. In number 10 the X is connected to the 10 through subtraction so to cancel that out you would subtract 10 from both sides to get the X alone.

I hope this helps and please don't hesitate to ask if there is anything still unclear!

3 0

3 years ago

Read 2 more answers

Eighteen less than three times a number is twice the number

erica [24]

3x-18=2x
-18=-x
So
X=18?

8 0

3 years ago

Find the image of U'( -8 , 1) after a translation along < 2 , 0 > and a reflection in the x axis

Lana71 [14]

Given: