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3 years ago

How can the answer to the problem x-6=5 be checked?

1 answer:

8 0

If you use multiplication to solve it, you use division to check it. You are using the inverse operation.

Hope this helps!
-Coconut;)

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Find cos(405°) and sin(405°). Identify the measure of the reference angle.

vagabundo [1.1K]

Answer:

Reference angle will be $45^{\circ}$

$cos(45^{\circ})=0.707$

$sin(45^{\circ})=0.707$

Step-by-step explanation:

We have given $cos(405^{\circ})$

Which can be written as $cos(405^{\circ})=cos(360+45)$

We know that $45^{\circ}$ is present in first quadrant

And in first quadrant the reference angle is angle itself

So reference angle will be = 45°

Now $cos(405)=cos(2\pi +45)=cos45^{\circ}=0.707$

And $sin(405)=sin(2\pi +45)=sin45^{\circ}=0.707$

8 0

3 years ago

If 8 apples cost 6$ how much does 1 apple cost

jonny [76]

Answer:

$0.75

Step-by-step explanation:

6 divided by 8

8 0

3 years ago

Read 2 more answers

The class of math is mapped on a coordinate grid with the origin being at the center point of the hall. Mary’s seat is located a

nignag [31]

To find the distance b/t 2 points you need to use the distance formula. that is

distance = square root of (x2-x1)^2 + (y2-y1)^2

to fill it in, it is

(it doesnt matter which point you start with, as long as its consistent)

x1 = 9
x2 = 5
y1 = -8
y2 = -10

square root of (5-9)^2 + (-10-8)^2

lets do algebra!

square root of (-4)^2 + (-18)^2

square root of 16 + 324

square root of 340

Distance = 18.4391 units.

I hope this helps!

7 0

3 years ago

I need help on this question please

ollegr [7]

The correct answer is A. 2.5 meters. One meter has approximately 3 feet, so it would make sense for a car to be about 7.5 feet in length

Hope this helps

3 0

3 years ago

, 4), perp. to y=-2x - 4

AVprozaik [17]

Answer:

+1/2

Step-by-step explanation:

If the slope of the given line is -2, the slope of a line perpendicular to the given line is the negative reciprocal of -2, or +1/2.

7 0

3 years ago