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If you think this is simple you won't ask this here.

Nvm I will answer you.

\(\dfrac{20}{4-(10-8)}\\ =\dfrac{20}{4-2}\\ =\dfrac{20}{2}\\ =10\)

\(\sqrt{2x+4}=4\\ 2x+4=4^2\\ 2x = 4^2 - 4 = 12\\ x = 12/2 = 6\)

Q:tangent a = 1.49, find a

A: a = arctangent 1.49 = 56.13 degrees or 0.98 radians.

5*8-4=40-4=36

4*3-3=12-3=9

36:9=4

4^x=32^(-x-2)*8^(x-3) find x

its just is

Solve for x:
sqrt(2 x+4) = 4

Raise both sides to the power of two:
2 x+4 = 16

Subtract 4 from both sides:
2 x = 12

Divide both sides by 2:
Answer: |x = 6

Cool beans! I didn’t ask the question but I have an aquarium and was considering if it might be worth buying an ORP tester.  What kind of fish do you have?

Solve for x over the real numbers:
4^x = 2^(-19-2 x)

Take the natural logarithm of both sides and use the identity log(a^b) = b log(a):
2 log(2) x = log(2) (-19-2 x)

Expand out terms of the right hand side:
2 log(2) x = -19 log(2)-2 log(2) x

Add 2 x log(2) to both sides:
4 log(2) x = -19 log(2)

Divide both sides by 4 log(2):
Answer: |x = -19/4

find x plssss

0.5

Can't do it

"A body was found in the basement of the Underwater Basket Weaving Building at​ 12:00 noon​ today, where the temperature is a steady 65 degrees Fahrenheit. When​ found, the core temperature was 91.9 degrees Fahrenheit. Two hours​ later, at​ 2:00 PM, the core temperature had fallen to 87.8. Assuming that the body temperature was 98.6 at the time of​ death, use​ Newton's law of cooling to find the time of death. ROUND TO 2 DECIMAL PLACES."

I'll leave you to work out what time of day this represents!

(x+1)/3=x/2 -1

if x=5

5-5=0 :P

Or 1 1/4 in fractions 

209+n*14

If I've understood the question right that should be it.

150-n*12,5

You'll find that if n is replaced with the amount of weeks passed you have your balance.

Though a bit about it and I've made a new equation using you guys' advice.

X*(1-5/8+1/6)=110 Minutes 

Etc. etc

X*5/24=110

X=110*24/5

X=528

its the /

We'll have to assume the ships and the base of the tower form a straight line.  (Maybe that's what 'directly offshore '  implies)

theta ship distance from lighthouse  would be defined by tan (theta) = tan 8.5= 350 /x    yields x = 2341.9 ft

Similarly Beta ship distance is  tan(beta)  = tan 4 = 350/x      x = 5005.2 ft from lighthouse

the difference between these two distances is the distance between the ships

5005.2 - 2341.9 =  2663.3 ft  

Do you know how to find the SLOPE of the line????     

the equation of a line is of the form    y = mx + b      where 'm' is the slope of the line.

Slope is defined as  rise / run   =   (y1-y2) / (x1-x2)

So let's sub in the coordinates you are given

(-5-2) / (0-4) =  -7/-4 = 7/4 = slope = m

So far you have     y = 7/4 x + b                     

If you substitute one of the sets of numbers in this equation you can find 'b'

y=7/4 x + b 

-5 =  7/4 (0) + b

b= -5

So now your line equation is     y = 7/4 x - 5      Substitute point (4,2) in there to see if it is correct !

2 = 7/4(4) -5     Check !