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2 years ago

⅝-(-¾)= I don't know the answer plz help me

Mathematics

2 answers:

White raven [17]2 years ago

6 0

The answer is 11/8 ! hope this helps

Leto [7]2 years ago

5 0

A negative and a negative together make a positive so you are basically adding. so you have to find a common denominator which is 8 so you end up with 5/8 + 6/8 = 11/ 8 = 1 and 3/8

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Answer:

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Step-by-step explanation:

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3 years ago

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A motorboat takes 5 hours to travel 150 miles going upstream. The return trip takes 3 hours going downstream. What is the rate o

lys-0071 [83]

Answer:

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

Step-by-step explanation:

we know that

The speed or rate is equal to divide the distance by the time

Let

x ----> the rate of the current (miles per hour)

y ----> the rate of the boat in still water (miles per hour)

we have that

going upstream

$y-x=\frac{150}{5}$

$y-x=30$ ----> equation A

going downstream

$y+x=\frac{150}{3}$

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Adds equation A and equation B

$y-x=30\\y+x=50\\------\\y+y=30+50\\2y=80\\y=40$

Find the value of x

$y+x=50$

$40+x=50$

$x=10$

therefore

The rate of the boat in still water is 40 miles per hour

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8 0

2 years ago

What is an equation of a line that passes through the point (10,5) and is perpendicular to the line whose equation is y=5/4x-2?

Maurinko [17]

y = mx + b

slope(m) = -4/5

(10,5)...x = 10 and y = 5

now sub into the formula and find b, the y int

5 = -4/5(10) + b

5 = -40/5 + b

5 = -8 + b

5 + 8 = b

13 = b

so ur perpendicular equation is : y = -4/5x + 13 <===

Hope this helps!

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2 years ago

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IgorLugansk [536]

Answer:

$=49.5cm^3$

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Step-by-step explanation:

$V=whl=2.75*6*3=49.5cm^3$

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3 years ago