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3 years ago

APEX and i'll put your answer as brainliest

Mathematics

1 answer:

exis [7]3 years ago

7 0

Answer:

by simplifying both sides of the inequality, then isolating the variable.

Inequality Form:

x≥7

Interval Notation:

[7,∞)

Step-by-step explanation:

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pls solve quickly!: It took a boat 2 hours to reach town A going upstream. The way back was 1h20 min. What is the speed of the b

goldenfox [79]

Answer:

15 mph

Step-by-step explanation:

Given: Boat took 2 hours to reach Town A going upstream.

Speed of stream= 3 mph

Time taken to reach back home= 1 hours 20 minutes

Lets assume distance covered one side be "d" and speed of boat in still water be "s".

∴ Speed of boat in upstream= $(s-3) \ mph$

Speed of boat in downstream= $(s+3)\ mph$

Also converting into fraction of time taken to reach back home.

Remember; 1 hour= 60 minutes

∴ Time taken to reach back home= $60+20= 80\ minutes$

Converting time given into fraction= $\frac{80\ minutes}{60\ minutes} = \frac{4}{3} \ hours$

hence, Time taken to reach back home is $\frac{4}{3} \ hours$

Now forming equation of boat travelling upstream and downstream, considering distance remain constant.

We know, $Distance= speed \times time$

⇒ $(s-3)\times 2= (s+3)\times \frac{4}{3}$

Using distributive property of multiplication

⇒ $2s-6= \frac{4}{3}s +4$

subtracting both side by $\frac{4}{3} s$

⇒ $2s-\frac{4}{3} s-6= 4$

Adding both side by 6

⇒ $2s-\frac{4}{3} s= 10$

taking LCD as 3

⇒ $\frac{2}{3} s= 10$

Multiplying both side by $\frac{3}{2}$

⇒ $s= \frac{3}{2} \times 10$

∴s= 15 mph

Hence, 15 mph is the speed of the boat in still water.

8 0

3 years ago

Lines l and m are parallel. lines t1 and t2 are transversals.

Lorico [155]

I think it is an acute angle

7 0

3 years ago

A builder uses squares to lay out various projects. Write two equations. The first equation should express the area of the squar

Gnoma [55]

Area as a function of length can be written as

f(l) = l^2

And volume of cube can be expressed as a function of side s as,

f(s) = s^3

3 0

3 years ago

Y’all help w this pls asap

patriot [66]

Answer:

x = 37

Joe Mama said to use to pythagorus theorem. Then u can sing super idol

8 0

3 years ago

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Which statement comparing 6² + 14 ÷ 2 and 100−82 is true?

DanielleElmas [232]

6*6 =36
14/2 =7
36+7= 43

100-82= 18

43 > 18

therefore A is truw

5 0

3 years ago

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