3 years ago

Write the following in scientific notation: 1. 5,400,000,000.=

2 answers:

7 0

ANSWER: 5.4 x 10 to the 9th power

Whenever you have a large number, you must shift the decimal point to the left to get a number between 1-9.

Kazeer [188]3 years ago

4 0

Answer:

5.4x10^9

Step-by-step explanation:

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the temperature outside changed from 85 degrees Fahrenheit to 49 degrees fahrenheit over a period of six days

Mice21 [21]

Answer:

whats the ?

Step-by-step explanation:

4 0

3 years ago

Hey answer this pls!!

Kitty [74]

Answer:

That would be A) -3/5.

Step-by-step explanation:

Here it is.

6 0

3 years ago

4. Which expression is equivalent to sin(50)º?

jasenka [17]

Answer:

cos(400)

Step-by-step explanation:

Useful things:

Cofunction identity: sin(x)=cos(90-x)

Sine and cosine have period of 360 degrees.

So sin(50)=cos(40) by cofunction identity.

Since cosine has period of 360 degrees then cos(40)=cos(360+40).

That simplifies to cos(400).

3 0

3 years ago

Ab and bc form a right angle at point B. if a= (-3,-1) and B= (4,4) what is the equation of BC?

Vesnalui [34]

Answer:

Option C $-7x-5y=-48$

Step-by-step explanation:

step 1

Find the slope of AB

we have

A(-3,-1) and B(4,4)

The slope m is equal to

$m=(4+1)/(4+3)$

$m=5/7$

step 2

Find the slope of BC

we know that

If two lines are perpendicular, then the product of their slopes is equal to -1

$m1*m2=-1$

we have

$m1=5/7$

substitute

$5/7*m2=-1$

$m2=-7/5$

step 3

Find the equation of the line into slope point form

$y-y1=m(x-x1)$

we have

$m=-7/5$

$B(4,4)$

substitute

$y-4=-(7/5)(x-4)$

Multiply by 5 both sides

$5y-20=-7x+28$

$7x+5y=28+20$

$7x+5y=48$

Multiply by -1 both sides

$-7x-5y=-48$

3 0

3 years ago

What is (0,0);y=-3x+2 in slope intercrot form, point slope form, and what is the slope?

Rom4ik [11]

Im pretty sure it is 2

3 0

3 years ago