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2 years ago

Please help! Will mark brainliest!

Mathematics

1 answer:

Anastaziya [24]2 years ago

4 0

Answer:

Step-by-step explanation:

I am not quite sure if this is correct.

first I figured out how many minutes per 1 mile: 24

then I figured out how exactly much time 1.5 hours is: 1 hour and 12 minutes. then I subtracted that from 2 hours, knowing that 1.5 hours is 3 miles, I found that there was only 48 minutes remaining in that hour, which would be 24×2, aka 2 miles. so the final answer would be 5 miles, sorry for the run-on sentence. Yet again, I am not quite sure if this is right-

-From: Lemon

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Find the distance between the points (2, 4) and (8,-8) on a coordinate plane, to the nearest whole number.

Alisiya [41]

Answer:

2,5

Step-by-step explanation:

2 to the right and 5 up

8 0

2 years ago

Solve the initial value problem: y'(x)=(4y(x)+25)^(1/2) ,y(1)=6. you can't really tell, but the '1/2' is the exponent

goblinko [34]

Answer:

$y(x)=x^2+5x$

Step-by-step explanation:

Given: $y'=\sqrt{4y+25}$

Initial value: y(1)=6

Let $y'=\dfrac{dy}{dx}$

$\dfrac{dy}{dx}=\sqrt{4y+25}$

Variable separable

$\dfrac{dy}{\sqrt{4y+25}}=dx$

Integrate both sides

$\int \dfrac{dy}{\sqrt{4y+25}}=\int dx$

$\sqrt{4y+25}=2x+C$

Initial condition, y(1)=6

$\sqrt{4\cdot 6+25}=2\cdot 1+C$

$C=5$

Put C into equation

Solution:

$\sqrt{4y+25}=2x+5$

$4y+25=(2x+5)^2$

$y(x)=\dfrac{1}{4}(2x+5)^2-\dfrac{25}{4}$

$y(x)=x^2+5x$

Hence, The solution is $y(x)=\dfrac{1}{4}(2x+5)^2-\dfrac{25}{4}$ or $y(x)=x^2+5x$

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2 years ago

In which sentence do the capitalized words represent a prepositional phrase?

larisa [96]

D. , a prepositional phrase indicates relationships b/w subjects and verbs. The A-C answers are all just grammatical variations of actions. Also, if you want a quicker answer next time, try posting in the right section (this one would be English or Language). :)

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3 years ago

Please help with the working out

nadya68 [22]

I hope this helps you

m=5

(5^2-5.5+9)^2

(25-25+9)^2

9^2

81

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3 years ago

Read 2 more answers

−1/2(7z+4)+1/5(5z−15)

Tanya [424]

Answer:

Step-by-step explanation:

-7z/2 - 2 + z -3

=-5 - 5z/2

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2 years ago